Source: AGRICOLA database (1970-1996)

Agrell, J., E. P. McDonald, et al. (2000). Effects of CO2 and light on tree phytochemistry and insect performance. Oikos . Feb. 88(2): 259-272. {a} Dept of Ecology, Animal Ecology, Lund Univ., Ecology Building, SE-223 62, Lund, Sweden

Auge, R. M., C. D. Green, et al. (2000). Correlations of stomatal conductance with hydraulic and chemical factors in several deciduous tree species in a natural habitat. New Phytologist. March 145(3): 483-500. {a} Institute of Agriculture, Tennessee Agricultural Experiment Station, University of Tennessee, Knoxville, TN, 37901-1071, USA

Beaudet, M., C. Messier, et al. (2000). Leaf- and plant-level carbon gain in yellow birch, sugar maple, and beech seedlings from contrasting forest light environments. Canadian Journal of Forest Research. [print] March 30(3): 390-404. {a} Groupe de Recherche en Ecologie Forestiere Interuniversitaire (GREFi), Departement des Sciences Biologiques, Centre-Ville Branch, Universite du Quebec a Montreal, Montreal, PQ, H3C 3P8, Canada

Bowman, J. C., D. Sleep, et al. (2000). The association of small mammals with coarse woody debris at log and stand scales. Forest Ecology and Management. April 129(1-3): 119-124. {a} Department of Biology, New Brunswick Cooperative Fish and Wildlife Research Unit, Fredericton, NB, Canada

Campbell, J. L. and S. T. Gower (2000). Detritus production and soil N transformations in old-growth eastern hemlock and sugar maple stands. Ecosystems . March April 3(2): 185-192. {a} Department of Forest Ecology and Management, University of Wisconsin, 1630 Linden Drive, Madison, WI, 53706, USA

Carter, G. A., R. Bahadur, et al. (2000). Effects of elevated atmospheric CO2 and temperature on leaf optical properties in Acer saccharum. Environmental and Experimental Botany. [print] June 43(3): 267-273. {a} Earth System Science Office, NASA, Room 212, Building 1100, Stennis Space Center, MS, 39529, USA

Chagnon, M., C. Hebert, et al. (2000). Community structures of Collembola in sugar maple forests: Relations to humus type and seasonal trends. Pedobiologia . April 44(2): 148-174. {a} Canadian Forest Service, Laurentian Forestry Centre, Natural Resources Canada, Sainte-Foy, Quebec, G1V 4C7, Canada

Cook, J. E. (2000). Disturbance history of two natural areas in Wisconsin: Implications for management. Natural Areas Journal. Jan. 20(1): 24-35. {a} College of Natural Resources, University of Wisconsin-Stevens Point, Stevens Point, WI, 54481, USA

Donkor, N. T. and J. M. Fryxell (2000). Lowland boreal forests characterization in Algonquin Provincial Park relative to beaver (Castor canadensis) foraging and edaphic factors. Plant Ecology. [print] May 148(1): 1-12. {a} Department of Renewable Resources, University of Alberta, Edmonton, AB, T6G 2H1, Canada

Franklin, S. E., R. J. Hall, et al. (2000). Incorporating texture into classification of forest species composition from airborne multispectral images. International Journal of Remote Sensing. Jan. 21(1): 61-79. {a} Canadian Forest Service, Northern Forestry Centre, Natural Resources Canada, Edmonton, AB, T6H 3S5, Canada

Greene, D. F. (2000). Sexual recruitment of trees in strip cuts in eastern Canada. Canadian Journal of Forest Research. [print] August 30(8): 1256-1263. {a} Departments of Geography and Biology, Concordia University, Montreal, PQ, H3G 1M8, Canada

Hansen, R. A. (2000). Effects of habitat complexity and composition on a diverse litter microarthropod assemblage. Ecology Washington D C. [print] April 81(4): 1120-1132. {a} Department of Biological Sciences, University of South Carolina, Columbia, SC, 29208, USA

Larson, B. M. H. and G. E. Waldron (2000). Catastrophic windthrow in Rondeau Provincial Park, Ontario. Canadian Field Naturalist. [print] Jan. March 114(1): 78-82. {a} Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, Santa Barbara, CA, 93106, USA

Le, D. A. and J. C. Pair (2000). 'John Pair' and 'Autumn Splendor' sugar maples. Hortscience . [print] August 35(5): 970-971. {a} Duke Univ., Box 90341, Durham, NC, 27708-0341, USA

Li, L., J. L. Popko, et al. (2000). 5-hydroxyconiferyl aldehyde modulates enzymatic methylation for syringyl monolignol formation, a new view of monolignol biosynthesis in angiosperms. Journal of Biological Chemistry. [print] March 275(9): 6537-6545. {a} School of Forestry and Wood Products, Michigan Technological University, Houghton, MI, 49931, USA

Lusk, C. H. and P. B. Reich (2000). Relationships of leaf dark respiration with light environment and tissue nitrogen content in juveniles of 11 cold-temperate tree species. Oecologia Berlin. [print] May 123(3): 318-329. {a} Departamento de Botanica, Universidad de Concepcion, Casilla 160-C, Concepcion, Chile

McClure, J. W., T. D. Lee, et al. (2000). Gap capture in northern hardwoods: Patterns of establishment and height growth in four species. Forest Ecology and Management. March 127(1-3): 181-189. {a} Department of Plant Biology, College of Life Sciences and Agriculture, University of New Hampshire, 46 College Road, Rudman Hall, Durham, NH, 03824, USA

McClure, J. W., T. D. Lee, et al. (2000). Gap capture in northern hardwoods: Patterns of establishment and height growth in four species. Forest Ecology and Management. March 127(1-3): 181-189. {a} Department of Plant Biology, College of Life Sciences and Agriculture, University of New Hampshire, 46 College Road, Rudman Hall, Durham, NH, 03824, USA

McQuattie, C. J. and G. A. Schier (2000). Response of sugar maple (Acer saccharum) seedlings to manganese. Canadian Journal of Forest Research. [print] March 30(3): 456-467. {a} Forest Service, Northeastern Research Station, U.S. Department of Agriculture, 359 Main Road, Delaware, OH, 43015, USA

Messier, C. and E. Nikinmaa (2000). Effects of light availability and sapling size on the growth, biomass allocation, and crown morphology of understory sugar maple, yellow birch, and beech. Ecoscience . [print] 7(3): 345-356. {a} Groupe de Recherche en Ecologie Forestiere interuniversitaire, (GREFi), Universite du Quebec a Montreal, Succursale Centre-Ville, Montreal, PQ, H3C 3P8, Canada

Moore, J. D., C. Camire, et al. (2000). Effects of liming on the nutrition, vigor, and growth of sugar maple at the Lake Clair Watershed, Quebec, Canada. Canadian Journal of Forest Research. [print] May 30(5): 725-732. {a} Direction de la Recherche Forestiere, Foret Quebec, Ministere des Ressources Naturelles du Quebec, 2700, Rue Einstein, Sainte-Foy, PQ, G1P 3W8, Canada

Nyland, R. D., D. G. Ray, et al. (2000). Early cohort development following even-aged reproduction method cuttings in New York northern hardwoods. Canadian Journal of Forest Research. Jan. 30(1): 67-75. {a} College of Environmental Science and Forestry, State University of New York, Syracuse, NY, 13210, USA

Raulier, F., P. Y. Bernier, et al. (2000). Modeling the influence of temperature on monthly gross primary productivity of sugar maple stands. Tree Physiology. March 20(5-6): 333-345. {a} Natural Resources Canada, Canadian Forest Service, Laurentian Forestry Centre, 1055 du P.E.P.S., Sainte-Foy, PQ, G1V 4C7, Canada

Rio, R. V. M. and E. A. Cameron (2000). Heterorhabditis bacteriophora: Seasonal dynamics and distribution in a stand of sugar maple, Acer saccharum. Journal of Invertebrate Pathology. Jan. 75(1): 36-40. {a} Department of Entomology, Penn State University, 501 A.S.I. Building, University Park, PA, 16802, USA

Schier, G. A. and C. J. McQuattie (2000). Effect of manganese on endomycorrhizal sugar maple seedlings. Journal of Plant Nutrition. [print] October 23(10): 1533-1545. {a} Forest Service, Northeastern Research Station, U.S. Department of Agriculture, 359 Main Road, Delaware, OH, 43015, USA

Schuler, T. M. and A. R. Gillespie (2000). Temporal patterns of woody species diversity in a central Appalachian forest from 1856 to 1997. Journal of the Torrey Botanical Society. [print] April June 127(2): 149-161. {a} Northeastern Research Station, USDA Forest Service, Parsons, WV, 26287, USA

Sendak, P. E., W. B. Leak, et al. (2000). Hardwood tree quality development in the white mountains of New Hampshire. Northern Journal of Applied Forestry. March 17(1): 9-15. {a} Northeastern Research Station, USDA Forest Service, Durham, NH, 03824-0640, USA

Swanson, A. M. and J. L. Vankat (2000). Woody vegetation and vascular flora of an old-growth mixed-mesophytic forest in southwestern Ohio. Castanea . March 65(1): 36-55. {a} 148 East Branch Road, Walpole, ME, 04573, USA

Tebbitt, M. C. (2000). International registration of cultivar names for unassigned woody genera 1999. Hortscience . [print] July 35(4): 548-549. {a} Brooklyn Botanic Garden, 1000 Washington Avenue, Brooklyn, NY, 11225-1099, USA

Truax, B., F. Lambert, et al. (2000). Herbicide-free plantations of oaks and ashes along a gradient of open to forested mesic environments. Forest Ecology and Management. [print] 137(1-3): 155-169. {a} College de Sherbrooke, Centre des Medias, Comite Estrien de Recherche sur les Feuillus (CERF), 475, Rue du Parc, Sherbrooke, PQ, J1E 4K1, Canada

Walters, M. B. and P. B. Reich (2000). Seed size, nitrogen supply, and growth rate affect tree seedling survival in deep shade. Ecology Washington D C. [print] July 81(7): 1887-1901. {a} Department of Forestry, Michigan State University, East Lansing, MI, 48824, USA

Walters, M. B. and P. B. Reich (2000). Trade-offs in low-light CO2 exchange: A component of variation in shade tolerance among cold temperate tree seedlings. Functional Ecology. [print] April 14(2): 155-165. {a} Department of Forestry, Michigan State University, 126 Natural Resources Building, East Lansing, MI, 48824, USA

Webb, S. L., M. Dwyer, et al. (2000). The myth of the resilient forest: Case study of the invasive Norway maple (Acer platanoides). Rhodora . [print] Summer 102(911): 332-354. {a} Biology Department, Drew University, Madison, NJ, 07940, USA

Williams, L., III and T. E. Martinson (2000). Colonization of New York vineyards by Anagrus spp. (Hymenoptera: Mymaridae): Overwintering biology, within-vineyard distribution of wasps, and parasitism of grape leafhopper, Erythroneura spp. (Homoptera: Cicadellidae), eggs. Biological Control. [print] June 18(2): 136-146. {a} Southern Insect Management Research Unit, USDA-ARS, Stoneville, MS, 38776-0346, USA

Woods, K. D. (2000). Long-term change and spatial pattern in a late-successional hemlock-northern hardwood forest. Journal of Ecology. April 88(2): 267-282. {a} Bennington College, Bennington, VT, 05201, USA

Woods, K. D. (2000). Dynamics in late-successional hemlock-hardwood forests over three decades. Ecology Washington D C. Jan. 81(1): 110-126. {a} Natural Sciences, Bennington College, Bennington, VT, 05201, USA

Zogg, G. P., D. R. Zak, et al. (2000). Microbial immobilization and the retention of anthropogenic nitrate in a northern hardwood forest. Ecology Washington D C. [print] July 81(7): 1858-1866. {a} Department of Life Sciences, University of New England, Biddeford, ME, 04005, USA

Zwieniecki, M. A. and N. M. Holbrook (2000). Bordered pit structure and vessel wall surface properties. Implications for embolism repair. Plant Physiology Rockville. [print] July 123(3): 1015-1020. {a} Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, 02138, USA

Anderson, R. (1999). Disturbance as a factor in the distribution of sugar maple and the invasion of Norway maple into a modified woodland. Rhodora . Summer 101(907): 264-273. {a} Harvard Forest, Petersham, MA, USA

Arthur, M. A., T. G. Siccama, et al. (1999). Calcium and magnesium in wood of northern hardwood forest species: Relations to site characteristics. Canadian Journal of Forest Research. March 29(3): 339-346. {a} Department of Forestry, University of Kentucky, Lexington, KY, 40546, USA

Ashton, P. M. S., H. S. Yoon, et al. (1999). Seedling leaf structure of New England maples (Acer) in relation to light environment. Forest Science. Nov. 45(4): 512-519. {a} School of Forestry and Environmental Studies, Yale University, New Haven, CT, USA

Back, J., D. W. Vanderklein, et al. (1999). Effects of elevated ozone on CO2 uptake and leaf structure in sugar maple under two light environments. Plant Cell and Environment. Feb. 22(2): 137-147. {a} Department of Forest Ecology, University of Helsinki, Helsinki, FIN-00014, Finland

BassiriRad, H., S. A. Prior, et al. (1999). A field method of determining NH4+ and NO3- uptake kinetics in intact roots: Effects of CO2 enrichment on trees and crop species. Plant and Soil 217(1-2): 195-204. {a} Department of Biological Sciences, University of Illinois at Chicago, Chicago, IL, 60607, USA

Batek, M. J., A. J. Rebertus, et al. (1999). Reconstruction of early nineteenth-century vegetation and fire regimes in the Missouri Ozarks. Journal of Biogeography. March 26(2): 397-412. {a} Geography Department, University of Wisconsin, 550 North Park St., 416 Science Hall, Madison, WI, 53706, USA

Beaudet, M., C. Messier, et al. (1999). Possible mechanisms of sugar maple regeneration failure and replacement by beech in the Boise-des-Muir old-growth forest, Quebec. Ecoscience 6(2): 264-271. {a} Groupe de Recherche en Ecologie Forestiere Interuniversitaire (GREFI), Departement des Sciences Biologiques, Universite du Quebec a Montreal, Succ. Centre-Ville, Montreal, PQ, H3C 3P8, Canada

Bertrand, A., G. Robitaille, et al. (1999). Influence of ozone on cold acclimation in sugar maple seedlings. Tree Physiology. July 19(8): 527-534. {a} Agriculture and Agri-Food Canada Research Station, 2560 Blvd Hochelaga, Sainte-Foy, PQ, G1V 2J3, Canada

Brownbridge, M., A. Adamowicz, et al. (1999). Prevalence of fungal entomopathogens in the life cycle of pear thrips, Taeniothrips inconsequens (Thysanoptera: Thripidae), in Vermont sugar maple forests. Biological Control. Sept. 16(1): 54-59. {a} Entomology Research Laboratory, University of Vermont, Burlington, VT, 05405-3400, USA

Canham, C. D., R. K. Kobe, et al. (1999). Interspecific and intraspecific variation in tree seedling survival: Effects of allocation to roots versus carbohydrate reserves. Oecologia Berlin. Oct. 121(1): 1-11. {a} Institute of Ecosystem Studies, Millbrook, NY, 12545, USA

Cline, M. G. and D. O. Deppong (1999). The role of apical dominance in paradormancy of temperate woody plants: A reappraisal. Journal of Plant Physiology. Sept. 155(3): 350-356. {a} Department of Plant Biology, Ohio State University Columbus, Columbus, OH, 43210, USA

Dakak, J. E., R. Keller, et al. (1999). Rays in juvenile wood of Acer. IAWA Journal 20(4): 405-417. {a} Faculte des Sciences, Universite 'Henri Poincare', LERMAB, F-54506, Vandoeuvre les Nancy, France

DiGregorio, L. M., M. E. Krasny, et al. (1999). Radial growth trends of sugar maple (Acer saccharum) in an Allegheny northern hardwood forest affected by beech bark disease. Journal of the Torrey Botanical Society. July Sept 126(3): 245-254. {a} Department of Natural Resources, Cornell University, Ithaca, NY, USA

Hale, C. M., J. Pastor, et al. (1999). Comparison of structural and compositional characteristics in old-growth and mature, managed hardwood forests of Minnesota, U.S.A. Canadian Journal of Forest Research. Oct. 29(10): 1479-1489. {a} Department of Forestry, University of Minnesota, 115 Green Hall, Saint Paul, MN, USA

Holmes, W. E. and D. R. Zak (1999). Soil microbial control of nitrogen loss following clear-cut harvest in northern hardwood ecosystems. Ecological Applications 9(1): 202-215. {a} School of Natural Resources and Environment, University of Michigan, 430 East University, Ann Arbor, MI, 48109-1115, USA

Houle, G. (1999). Mast seeding in Abies balsamea, Acer saccharum and Betula alleghaniensis in an old growth, cold temperate forest of north-eastern North America. Journal of Ecology. June 87(3): 413-422. {a} Centre d'etudes nordiques and Department de biologie, Universite Laval, Sainte-Foy, Quebec, G1K 7P4, Canada

Hutchinson, T. C., S. A. Watmough, et al. (1999). The impact of simulated acid rain and fertilizer application on a mature sugar maple (Acer saccharum Marsh.) forest in central Ontario Canada. Water Air and Soil Pollution 109(1-4): 17-39. {a} Environmental Resource Studies Program, Trent Univ., Peterborough, ON K9J 7B8, Canada

Iseman, T. M., D. R. Zak, et al. (1999). Revegetation and nitrate leaching from Lake States northern hardwood forests following harvest. Soil Science Society of America Journal. Sept. Oct. 63(5): 1424-1429. {a} School of Natural Resources and Environment, Univ. of Michigan, Ann Arbor, MI, 48109-1115, USA

Jenkins, M. A. and G. R. Parker (1999). Composition and diversity of ground-layer vegetation in silvicultural openings of southern Indiana forests. American Midland Naturalist. July 142(1): 1-16. {a} Great Smoky Mountains National Park, 1314 Cherokee Orchard Road, Gatlinburg, TN, 37738, USA

Joslin, J. D. and M. H. Wolfe (1999). Disturbances during minirhizotron installation can affect root observation data. Soil Science Society of America Journal 63(1): 218-221. {a} Atmospheric Sciences and Environmental Assessments, Tennessee Valley Authority, 17 Ridgeway Road, Norris, TN, 37828-0920, USA

Kenefic, L. S. and R. D. Nyland (1999). Sugar maple height-diameter and age-diameter relationships in an uneven-aged northern hardwood stand. Northern Journal of Applied Forestry 16(1): 43-47. {a} Northeastern Research Station, USDA Forest Service, R.R. 1, Bradley, ME, 04411, USA

Leak, W. B. (1999). Species composition and structure of a northern hardwood stand after 61 years of group/patch selection. Northern Journal of Applied Forestry. Sept. 16(3): 151-153. {a} Northeastern Research Station, Durham, NH, 03824, USA

Liptzin, D. and P. M. S. Ashton (1999). Early-successional dynamics of single-aged mixed hardwood stands in a southern New England forest, USA. Forest Ecology and Management 116(1-3): 141-150. {a} School of Forestry and Environmental Studies, Yale University, New Haven, CT, 06511, USA

Marquis, F., C. Camire, et al. (1999). Basic cation and Al distribution in Ahe soil solution of fertilized maple stand: Representativeness of saturation extracts. Canadian Journal of Soil Science. Feb. 79(1): 47-55. {a} INRS - Eau, Carrefour Molson, 2800 rue Einstein, Sainte-Foy, PQ, G1K 7P4, Canada

McDonald, E. P., J. Agrell, et al. (1999). CO2 and light effects on deciduous trees: Growth, foliar chemistry, and insect performance. Oecologia Berlin. May 119(3): 389-399. {a} Department of Forest Ecology and Management, University of Wisconsin-Madison, 1630 Linden Drive, Madison, WI, 53706, USA

Millet, J., A. Bouchard, et al. (1999). Relationship between architecture and successional status of trees in the temperate deciduous forest. Ecoscience 6(2): 187-203. {a} Laboratoire d'Ecologie Vegetale, Institut de Recherche en Biologie Vegetale, Universite de Montreal, 4101 est Rue Sherbrooke, Montreal, PQ, H1X 2B2, Canada

Mills, H. H. and S. L. Stephenson (1999). Forest vegetation and boulder streams in the central Appalachian Valley and Ridge province, southwestern Virginia. Journal of the Torrey Botanical Society. July Sept 126(3): 188-196. {a} Department of Earth Sciences, Tennessee Technological University, Cookeville, TN, 38505, USA

Niewiadomska, E., V. C. Gaucher, et al. (1999). Elevated CO2 does not provide protection against ozone considering the activity of several antioxidant enzymes in the leaves of sugar maple. Journal of Plant Physiology. July 155(1): 70-77. {a} F. Gorski Department of Plant Physiology, Polish Academy of Sciences, ul. Slawkowska 17, 31-016, Cracow, Poland

Niklas, K. J. (1999). The mechanical role of bark. American Journal of Botany. April 86(4): 465-469. {a} Section of Plant Biology, Cornell University, Ithaca, NY, 14853-5908, USA

Niklas, K. J. (1999). Variations of the mechanical properties of Acer saccharum roots. Journal of Experimental Botany 50(331): 193-200. {a} Sect. Plant Biol., Cornell Univ., Ithaca, New York, USA

Pate, J. S. and T. E. Dawson (1999). Assessing the performance of woody plants in uptake and utilisation of carbon, water and nutrients: Implications for designing agricultural mimic systems. Agroforestry Systems 45(1-3): 245-275. {a} Department of Botany and Centre for Legumes in Mediterranean Agriculture, University of Western Australia, Nedlands, WA, 6907, Australia

Pell, E. J., J. P. Sinn, et al. (1999). Differential response of four tree species to ozone-induced acceleration of foliar senescence. Plant Cell and Environment. July 22(7): 779-790. {a} 211 Buckhout Laboratory, University Park, PA, 16802, USA

Peterjohn, W. T., C. J. Foster, et al. (1999). Patterns of nitrogen availability within a forested watershed exhibiting symptoms of nitrogen saturation. Forest Ecology and Management. June 119(1-3): 247-257. {a} Department of Biology, West Virginia University, Morgantown, WV, 26506-6057, USA

Peterson, A. G., J. T. Ball, et al. (1999). Quantifying the response of photosynthesis to changes in leaf nitrogen content and leaf mass per area in plants grown under atmospheric CO2 enrichment. Plant Cell and Environment. Sept. 22(9): 1109-1119. {a} Earth and Environmental Sciences, Lamont-Doherty Earth Observatory, Columbia University, 61 Route 9 W, Palisades, NY, 10964, USA

Pope, R. J., A. M. Gordon, et al. (1999). Leaf litter colonization by invertebrates in the littoral zone of a small oligotrophic lake. Hydrobiologia 392(2): 99-112. {a} Dillon Consulting Limited, 10691 Shellbridge Way, Suite 130, Richmond, BC, V6X 2W8, Canada

Raulier, F., P. Y. Bernier, et al. (1999). Canopy photosynthesis of sugar maple (Acer saccharum): Comparing big-leaf and multilayer extrapolations of leaf-level measurements. Tree Physiology. June 19(7): 407-420. {a} Canadian Forest Service, Laurentian Forestry Centre, Natural Resources Canada, 1055 du P.E.P.S., Sainte-Foy, PQ, G1V 4C7, Canada

Ristau, T. E. and S. B. Horsley (1999). Pin cherry effects on Allegheny hardwood stand development. Canadian Journal of Forest Research 29(1): 73-84. {a} Northeastern Research Station, USDA Forest Service, Irvine, PA, 16329, USA

Schimpf, D. J. and N. P. Danz (1999). Light passage through leaf litter: Variation among northern hardwood trees. Agricultural and Forest Meteorology. Oct. 97(2): 103-111. {a} Department of Biology, University of Minnesota, Duluth, MN, 55812-2496, USA

St, H. R. and W. R. Graves (1999). Foliar traits of sugar maples and black maples near 43degreeN latitude in the eastern and central United States. Journal of the American Society for Horticultural Science. Nov. 124(6): 605-611. {a} Department of Horticulture, Iowa State University, Ames, IA, 50011-1100, USA

Teulon, D. A. J., E. A. Cameron, et al. (1999). Thrips (Thysanoptera) diversity in a sugar maple (Aceraceae) plantation. Canadian Entomologist. Sept. Oct. 131(5): 629-633. {a} New Zealand Institute for Crop and Food Research Ltd., Christchurch, New Zealand

Watmough, S. A. (1999). Monitoring historical changes in soil and atmospheric trace metal levels by dendrochemical analysis. Environmental Pollution 106(3): 391-403. {a} ERS Program, Trent University, Peterborough, ON, K9J 7B8, Canada

White, G., I. Fernandez, et al. (1999). Impacts of ammonium sulfate treatment on the foliar chemistry of forest trees at the Bear Brook Watershed in Maine. Environmental Monitoring and Assessment. March 55(1): 235-250. {a} Environmental Assessment Technologies, Lockheed Martin Idaho Technologies, Inc., Idaho Falls, ID, 83415-2213, USA

Wilder, C. M., F. W. Holtzclaw, Jr., et al. (1999). Succession, sapling density and growth in canopy gaps along a topographic gradient in a second growth East Tennessee forest. American Midland Naturalist. Oct. 142(2): 201-212. {a} School of Medicine, Health Sciences Center, University of Virginia, Charlottesville, VA, 22903, USA

Wright, A. N., A. X. Niemiera, et al. (1999). Preplant lime and micronutrient amendments to pine bark affect growth of seedlings of nine container-grown tree species. Hortscience . July 34(4): 669-673. {a} Department of Horticulture, Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061-0327, USA

Zakrzewski, W. T. (1999). A mathematically tractable stem profile model for jack pine in Ontario. Northern Journal of Applied Forestry. Sept. 16(3): 138-143. {a} Ontario Forest Research Institute, Sault Sainte Marie, ON, P6A 2E5, Canada

Zhang, L., B. P. Oswald, et al. (1999). Relationships between overstory species and community classification of the Sipsey Wilderness, Alabama. Forest Ecology and Management 114(2-3): 377-383. {a} Faculty Forestry, Coll. Environmental Science Forestry, SUNY, Syracuse, NY 13210, USA

Abrams, M. D., C. M. Ruffner, et al. (1998). Dendroecology and species co-existence in an old-growth Quercus-Acer-Tilia talus slope forest in the central Appalachians, USA. Forest Ecology and Management 106(1): 9-18. {a} Pennsylvania State Univ., Sch. Forest Resour., 4 Ferguson Build., University Park, PA 16802, USA

Abrams, M. D., C. M. Ruffner, et al. (1998). Tree-ring responses to drought across species and contrasting sites in the ridge and valley of central Pennsylvania. Forest Science 44(4): 550-558. {a} 4 Ferguson Build., Sch. Forest Resources, Pa. State Univ., University Park, PA 16802, USA

Auge, R. M., X. Duan, et al. (1998). Foliar dehydration tolerance of twelve deciduous tree species. Journal of Experimental Botany 49(321): 753-759. {a} Tennessee Agricultural Exp. Station, OHLD, Univ. Tennessee, P.O. Box 1071, Knoxville, TN 37901-1071, USA

Bakken, P. N. and J. E. Cook (1998). Regeneration potential of six habitat types common to north-central Wisconsin. Northern Journal of Applied Forestry 15(3): 116-123. {a} 1530 N. Cleveland Ave., 115 Green Hall, St. Paul, MN 55108, USA

Barras, N. and M. Kellman (1998). The supply of regeneration micro-sites and segregation of tree species in a hardwood/boreal forest transition zone. Journal of Biogeography 25(5): 871-881. {a} Dep. Geography, York Univ., North York, ON M3J 1P3, Canada

Bastien, D., N. Villeneuve, et al. (1998). Analysis of the lichen communities of two differently dieback-affected plots in a maple forest stand near Quebec city, Canada. Phytocoenologia 28(2): 285-299. {a} Dep. Sci. Bois Foret, Fac. For. Geomatique, Univ. Laval, Sainte-Foy, PQ G1K 7P4, Canada

Beaudet, M. and C. Messier (1998). Growth and morphological responses of yellow birch, sugar maple and beech seedlings growing under a natural light gradient. Canadian Journal of Forest Research 28(7): 1007-1015. {a} Groupe Rech. Ecol. Forestiere, Dep. Sci. Biol., Univ. Que. a Montreal, CP 8888, Succursale Cent.-Ville, Montreal, PQ H3C 3P8, Canada

Bowen, K. L., N. K. Kaushik, et al. (1998). Macroinvertebrate communities and biofilm chlorophyll on woody debris in two Canadian oligotrophic lakes. Archiv fuer Hydrobiologie 141(3): 257-281. {a} Dep. Environmental Biology, Univ. Guelph, Guelph, ON N1G 2W1, Canada

Burke, M. K. and D. J. Raynal (1998). Liming influences growth and nutrient balances in sugar maple (Acer saccharum) seedlings on an acidic forest soil. Environmental and Experimental Botany 39(2): 105-116. {a} Southern Res. Station, USDA Forest Serv., Charleston, SC 29414, USA

Burkholder, G. (1998). Anura: Hyla chrysoscelis (Gray Treefrog). Hibernacula. Herpetological Review 29(4): 231. {a} Dep. Biol., Mount Vernon Nazarene Coll., Mount Vernon, OH 43050, USA

Burton, A. J., K. S. Pregitzer, et al. (1998). Drought reduces root respiration in sugar maple forests. Ecological Applications 8(3): 771-778. Sch. Forestry Wood Products, Mich. Technol. Univ., Houghton, MI 49931, USA

Cooper, E. S. (1998). Bryophytes in old-growth forests of western Massachusetts. Journal of the Torrey Botanical Society 125(2): 117-132. {a} Dep. Biol. Sci., Smith Coll., Northampton, MA 01060, USA

Davis, M. B., R. R. Calcote, et al. (1998). Patchy invasion and the origin of a hemlock-hardwoods forest mosaic. Ecology Washington D C 79(8): 2641-2659. {a} Dep. Ecol. Evol. Behav., Univ. Minn., Saint Paul, MN 55108, USA

Delucia, E. H., T. W. Sipe, et al. (1998). Sapling biomass allocation and growth in the understory of a deciduous hardwood forest. American Journal of Botany 85(7): 955-963. {a} Dep. Plant Biol., Univ. Illinois, 265 Morrill Hall, 505 S. Goodwin Ave., Urbana, IL 61801, USA

Demers, J. D., T. D. Lee, et al. (1998). Substrate type and the distribution of sugar maple at its elevational limit in the White Mountains, New Hampshire. Canadian Journal of Forest Research 28(3): 494-498. {a} Dep. Plant Biol., Univ. New Hampshire, Durham, NH 03824, USA

Doyon, F., A. Bouchard, et al. (1998). Tree productivity and successional status in Quebec northern hardwoods. Ecoscience 5(2): 222-231. {a} Faculty Forestry, Lakehead Univ., 955 Oliver Road, Thunder Bay, ON P7B 5E1, Canada

Edwards, N. T. and R. J. Norby (1998). Below-ground respiratory responses of sugar maple and red maple saplings to atmospheric CO2 enrichment and elevated air temperature. Plant and Soil 206(1): 85-97. {a} Oak Ridge National Laboratory, Oak Ridge, TN, 37831-6422, USA

Eirvin, M. A., J. Duerbeck, et al. (1998). Filling in the gaps: Stand history and succession of a mixed hardwood old-growth forest. Transactions of the Missouri Academy of Science 32: 78-90. {a} School of Natural Resources, University of Missouri, Columbia, MO, USA

Finzi, A. C., C. D. Canham, et al. (1998). Canopy tree-soil interactions within temperature forests: Species effects on pH and cations. Ecological Applications 8(2): 447-454. {a} Duke Univ. Phytotron, P.O. Box 90340, Durham, NC 27708-0340, USA

Gebre, G. M., T. J. Tschaplinski, et al. (1998). Water relations of severe hardwood species in response to throughfall manipulation in an upland oak forest during a wet year. Tree Physiology 18(5): 299-305. {a} Environ. Sci. Div., Oak Ridge Natl. Lab., P.O. Box 2008, Oak Ridge, TN 37831-6422, USA

Gill, D. S., J. S. Amthor, et al. (1998). Leaf phenology, photosynthesis and the persistence of saplings and shrubs in a mature northern hardwood forest. Tree Physiology 18(5): 281-289. {a} Dep. Biol. Sci., Calif. State Univ., Fullerton, CA 92834, USA

Glenn, M. G., S. L. Webb, et al. (1998). Forest integrity at anthropogenic edges: Air pollution disrupts bioindicators. Environmental Monitoring and Assessment 51(1-2): 163-169. {a} Biol. Dep., Seton Hall Univ., South Orange, NJ 07079, USA

Goodburn, J. M. and C. G. Lorimer (1998). Cavity trees and coarse woody debris in old-growth and managed northern hardwood forests in Wisconsin and Michigan. Canadian Journal of Forest Research 28(3): 427-438. {a} Dep. Forestry, Univ. Wisconsin-Madison, Madison, WI 53706, USA

Gordon, D. C., K. E. Percy, et al. (1998). Effect of enhanced UV-radiation on adaxial leaf surface micromorphology and epicuticular wax biosynthesis of sugar maple. Chemosphere 36(4-5): 853-858. {a} Dep. Biol., Univ. New Brunswick, Fredericton, NB E3B 6E1, Canada

Hale, C. M. and J. Pastor (1998). Nitrogen content, decay rates, and decompositional dynamics of hollow versus solid hardwood logs in hardwood forests of Minnesota, USA. Canadian Journal of Forest Research 28(9): 1276-1285. {a} Dep. Forest Resources, 115 Green Hall, Univ. Minnesota, 1530 Cleveland Ave. North, St. Paul, MN 55108-1027, USA

Hannah, P. R. (1998). Observations on planted yellow birch. Northern Journal of Applied Forestry 15(2): 106. {a} Univ. Vt., Sch. Nat. Resources, Burlington, VT 05405, USA

Harris, J. R., P. Knight, et al. (1998). Effect of root severance on growth of field-grown sugar maple. Hortscience 33(1): 21-23. Dep. Hortic., Va. Polytechnic Inst. and State Univ., Blacksburg, VA 24061, USA

Held, M. E., H. S. Jones, et al. (1998). Forest community structure and tornado damage in an old-growth system in northern Kentucky. Castanea 63(4): 474-481. {a} Dep. Boil., Saint Peter's Coll., Jersey City, NJ 07306, USA

Hogan, G. D. (1998). Effect of simulated acid rain on physiology, growth and foliar nutrient concentrations of sugar maple. Chemosphere 36(4-5): 633-638. {a} Natural Resources Canada, Canadian Forest Serv., Sault Ste. Marie, ON P6A 5M7, Canada

Hopkin, A. A. and G. M. Howse (1998). A survey to evaluate crown condition of forest, roadside, and urban maple trees in Ontario, 1987-1995. Northern Journal of Applied Forestry 15(3): 141-145. {a} Forest Serv., 1219 Queen St., P.O. Box 490, Sault Ste. Marie, ON P6A 5M7, Canada

Hutchinson, T. C., S. A. Watmough, et al. (1998). Effects of excess nitrogen deposition and soil acidification on sugar maple (Acer saccharum) in Ontario, Canada: An Experimental study. Canadian Journal of Forest Research 28(2): 299-310. {a} Environmental Resource Studies Program, Trent Univ., Peterborough, ON K9J 7B8, Canada

Jenkins, M. A. and G. R. Parker (1998). Composition and diversity of woody vegetation in silvicultural openings of southern Indiana forests. Forest Ecology and Management 10(1-3): 57-74. {a} Dep. Forestry Natural Resources, 1159 Building, Purdue University, West Lafayette, IN 47907-1159, USA

Jose, S. and A. R. Gillespie (1998). Compensatory mechanisms of central U.S. hardwood forest communities in a changing environment. Plant Ecology 135(2): 125-134. {a} Dep. Forestry Nat. Resources, 1159 Forestry Build., Purdue Univ., West Lafayette, IN 47907, USA

Kost, D. A., J. P. Vimmerstedt, et al. (1998). Topsoiling, ripping, and fertilizing effects on tree growth and nutrition on calcareous minesoils. Forest Ecology and Management 103(2-3): 307-319. {a} Sch. Nat. Resour., Ohio Agric. Res. Dev. Cent., Ohio State Univ., 1680 Madison Ave., Wooster, OH 44691, USA

Kruger, E. L., J. C. Volin, et al. (1998). Influences of atmospheric CO2 enrichment on the responses of sugar maple and trembling aspen to defoliation. New Phytologist 140(1): 85-94. {a} Dep. Forest Ecol. and Management, Univ. Wisconsin-Madison, Madison, WI 53706, USA

Larochelle, F., E. Forget, et al. (1998). Sources of temporal variation in sap sugar content in a mature sugar maple (Acer saccharum) plantation. Forest Ecology and Management 106(2-3): 307-313. {a} Cent. Recherche Biol. Forestiere, Fac. Foresterie Geomatique, Universite Laval, Sainte-Foy, PQ G1K 7P4, Canada

Lei, T. T. and M. J. Lechowicz (1998). Diverse responses of maple saplings to forest light regimens. Annals of Botany London 82(1): 9-19. {a} Dep. Biol., Virginia Tech, Blacksburn, VA 24061-0406, USA

Lindroth, R. L. and K. K. Kinney (1998). Consequences of enriched atmospheric CO2 and defoliation for foliar chemistry and gypsy moth performance. Journal of Chemical Ecology 24(10): 1677-1695. {a} Dep. Entomol., 1630 Linden Dr., Univ. Wisc., Madison, WI 53706, USA

Loewenstein, N. J. and S. G. Pallardy (1998). Drough tolerance, xylem sap abscisic acid and stomatal conductance during soil drying: A comparison of canopy trees of three temperate deciduous angiosperms. Tree Physiology 18(7): 431-439. {a} Sch. Nat. Resources, 1-31 Agric. Build., Univ. Missouri, Columbia, MO 65211, USA

Loewenstein, N. J. and S. G. Pallardy (1998). Drought tolerance, xylem sap abscisic acid and stomatal conductance during soil drying: A comparison of young plants of four temperate deciduous angiosperms. Tree Physiology 18(7): 421-430. {a} Sch. Nat. Resources, 1-31 Agric. Build., Univ. Missouri, Columbia, MO 65211, USA

Marks, P. L. and S. Gardescu (1998). A case study of sugar maple (Acer saccharum) as a forest seedling bank species. Journal of the Torrey Botanical Society 125(4): 287-296. Sect. Ecol. Systematics, Cornell Univ., Ithaca, NY 14853-2701, USA

Maynard, A. A. (1998). Utilization of MSW compost in nursery stock production. Compost Science and Utilization 6(4): 38-44. {a} Dep. Soil Water, Connecticut Agric., Exp. Stn., New Haven, CT, USA

McHale, P. J., M. J. Mitchell, et al. (1998). Soil warming in a northern hardwood forest: Trace gas fluxes and leaf litter decomposition. Canadian Journal of Forest Research 28(9): 1365-1372. {a} Faculty Environmental Forest Biol., Coll. Environmental Sci. Forestry, State Univ. New York, Syracuse, NY 13210, USA

Meiners, S. J. and D. J. Gorchov (1998). Effects of distance to Juniperus virginiana on the establishment of Fraxinus and Acr seedlings in old fields. American Midland Naturalist 139(2): 353-364. {a} Dep. Ecol. Evol. Nat. Resources, Rutgers Univ., New Brunswick, NJ 08903, USA

Naidu, S. L. and E. H. Delucia (1998). Physiological and morphological acclimation of shade-grown tree seedlings to late-season canopy gap formation. Plant Ecology 138(1): 27-40. Dep. Plant Biol., Univ. Illinois, 265 Morrill Hall, 505 S. Goodwin Ave., Urbana, IL 61801, USA

Pregitzer, K. S., M. J. Laskowski, et al. (1998). Variation in sugar maple root respiration with root diameter and soil depth. Tree Physiology 18(10): 665-670. {a} Sch. Forestry Wood Products, Michigan Technological Univ., Houghton, MI 49931, USA

Raulier, F., C. H. Ung, et al. (1998). Analytical estimation of branchwood volume in sugar mapel, linked to branchiness. Trees Berlin 12(7): 395-405. {a} Nat. Resources Can., Can. Forest. Serv., Laurentian For. Cent., 1055 du P.E.P.S., P.O. Box l3800, Sainte-Foy, PQ G1V 4C7, Canada

Roy, M. and D. Couillard (1998). Metal leaching following sludge application to a deciduous forest soil. Water Research 32(5): 1642-1652. {a} Centre Recherche Developpement sur les Sol et les Grandes Cultures, Direction Generale Recherche, Agriculture Agroalimentaire Canada, 2560, Blvd. Holchelaga, Saint-Foy, PQ G1V 2J3, Canada

Runkle, J. R. (1998). Changes in southern Appalachian canopy tree gaps sampled thrice. Ecology Washington D C 79(5): 1768-1780. {a} Dep. Biol. Sci., Wright State Univ., Dayton, OH 45435, USA

Schwegman, J. E., W. E. M. T. L. Esker, et al. (1998). Anthracnose-caused mortality of flowering dogwood (Cornus florida L.) at the Dean Hills Nature Preserve, Fayette County, Illinois, USA. Natural Areas Journal 18(3): 204-207. {a} Div. Nat. Heritage, Ill. Dep. Nat. Resources, 524 South 2nd Street, Springfield, IL 62701, USA

Skepner, A. P. and D. E. Krane (1998). RAPD reveals genetic similarity of Acer saccharum and Acer nigrum. Heredity 80(4): 422-428. {a} Dep. Biol. Sci., Wright State Univ., Dayton, OH 45435-0001, USA

Spetich, M. A. and G. R. Parker (1998). Distribution of biomass in an Indiana old-growth forest from 1926 to 1992. American Midland Naturalist 139(1): 90-107. Dep. Forestry Natural Resources, Purdue Univ., West Lafayette, IN 47907, USA

Teulon, D. A. J., T. C. Leskey, et al. (1998). Pear thrips Taeniothrips inconsequens (Thysanoptera: Thripidae) life history and population dynamics in sugar maple in Pennsylvania. Bulletin of Entomological Research 88(1): 83-92. {a} New Zealand Inst. Crop Food Res., Private Bag 4704, Christchurch, New Zealand

Tschaplinski, T. J., G. M. Gebre, et al. (1998). Osmotic potential of several hardwood species as affected by manipulation of throughfall precipitation in an upland oak forest during a dry year. Tree Physiology 18(5): 291-298. {a} Environ. Sci. Div., Oak Ridge Natl. Lab., P.O. Box 2008, Oak Ridge, TN 37831-6422, USA

Vaneckova, S. I. (1998). Content of several chemical elements in plant tissues attacked by eriophyid mites (Eriophyoidea, Acari). Ekologia Bratislava 17(1): 3-10. {a} Inst. Physiol., Acad. Sci. Czech Republic, 142 20 Praha 4, Videnska 1083, Czech Republic

Watmough, S. A., T. C. Hutchinson, et al. (1998). The quantitative analysis of sugar maple tree rings by laser ablation in conjunction with ICP-MS. Journal of Environmental Quality 27(5): 1087-1094. {a} ERS Program, Trent Univ., Peterborough, ON K9J 7B8, Canada

Watmough, S. A., T. C. Hutchinson, et al. (1998). Changes in tree ring chemistry in sugar maple (Acer saccharum) along an urban-rural gradient in southern Ontario. Environmental Pollution 101(3): 381-390. {a} Environ. Resource Studies Program, Trent Univ., Peterborough, ON K9J 7B8, Canada

Yang, S., X. Liu, et al. (1998). A model of stomatal conductance in sugar maple (Acer saccharum Marsh). Journal of Theoretical Biology 191(2): 197-211. {a} Dep. Bot. Plant Sci., Univ. California, Riverside, CA 92521, USA

Zlotina, M. A., V. C. Mastro, et al. (1998). Survival and development of Lymantria mathura (Lepidoptera: Lymantriidae) on North American, Asian, and European tree species. Journal of Economic Entomology 91(5): 1162-1166. {a} Dep. Etnomol., Univ. Mass., Amherst, MA 01003, USA

Aloni, R., J. D. Alexander, et al. (1997). Natural and experimentally altered hydraulic architecture of branch junctions in Acer saccharum Marsh. and Quercus velutina Lam. trees. Trees Berlin 11(5): 255-264. {a} Dep. Botany, The George S. Wise Fac. Life Sci., Tel Aviv Univ., Tel Aviv 69978, Israel

Bell, D. T. (1997). Eighteen years of change in an Illinois streamside deciduous forest. Journal of the Torrey Botanical Society 124(2): 174-188. Dep. Bot. Univ. Western Australia, Nedlands, WA 6907, Australia

Bertrand, A., G. Robitaille, et al. (1997). Changes in ABA and gene expression in cold-acclimated sugar maple. Tree Physiology 17(1): 31-37. {a} Nat. Resources Canada, Canadian For. Serv., Laurentian For. Cent., P.O. Box 3800, Sainte-Foy, PQ G1V 4C7, Canada

Bowman, J. C. (1997). An Arboreal encounter between a long-tailed weasel, Mustela frenata, and three red squirrels, Tamiasciurus hudsonicus. Canadian Field Naturalist 111(3): 480-481. New Brunswick Cooperative Fish and Wildlife Res. Unit, Univ. New Brunswick, P.O. Box 44555, Frederiction, New Brunswick E3B 5A3, UK

Bragg, D. C., G. D. Mroz, et al. (1997). Relationship between "birdseye" sugar maple (Acer saccharum) occurrence and its environment. Canadian Journal of Forest Research 27(8): 1182-1191. {a} Dep. For. Resources Ecol. Cent., Utah State Univ., Logan, UT 84322-5215, USA

Burton, A. J., G. P. Zogg, et al. (1997). Effect of measurement CO-2 concentration on sugar maple root respiration. Tree Physiology 17(7): 421-427. {a} Sch. Forestry and Wood Products, Mich. Technol. Univ., Houghton, MI 49931, USA

Coli, W. M., C. S. Hollingsworth, et al. (1997). Seasonal and vertical variation in activity of pear thrips (Thysanoptera: Thripidae) within stands of sugar maple. Canadian Journal of Forest Research 27(5): 667-673. {a} Dep. Entomol., Univ. Mass., Amherst, MA 01003, USA

Darveau, M., J. Martel, et al. (1997). Associations between forest decline and bird and insect communities in northern hardwoods. Canadian Journal of Forest Research 27(6): 876-882. {a} Dep. Sci. Bois Foret, Univ. Laval, Sainte-Foy, PQ G1K 7P4, Canada

Dodge, S. L. (1997). Successional trends in a mixed oak forest on High Mountain, New Jersey. Journal of the Torrey Botanical Society 124(4): 312-317. {a} Dep. Environ. Sci. and Geography, William Paterson Univ. N.J., Wayne, NJ 07470, USA

Dyer, J. M. and P. R. Baird (1997). Wind disturbance in remnant forest stands along the prairie-forest ecotone, Minnesota, USA. Plant Ecology 129(2): 121-134. {a} Dep. Geography, Ohio Univ., Athens, OH 45701-2979, USA

Ebinger, J., C. D. O, et al. (1997). Vegetation survey of Elkhart Woods, Logan County, Illinois. Castanea 62(2): 74-81. {a} Botany Dep., Eastern Illinois Univ., Charleston, IL 61920, USA

Edgin, B. R. and J. E. Ebinger (1997). Barrens and the forest-prairie interface in presettlement Crawford County, Illinois. Castanea 62(4): 260-267. Botany Dep., Eastern Illinois Univ., Charleston, IL 61920, USA

Fassnacht, K. S. and S. T. Gower (1997). Interrelationships among the edaphic and stand characteristics, leaf area index, and aboveground net primary production of upland forest ecosystems in north central Wisconsin. Canadian Journal of Forest Research 27(7): 1058-1067. {a} Dep. Forestry, Univ. Wis., 1630 Linden Drive, Madison, WI 53706, USA

Fore, S. A., J. L. Vankat, et al. (1997). Temporal variation in the woody understory of an old-growth Fagus-Acer forest and implications for overstory recruitment. Journal of Vegetation Science 8(5): 607-614. {a} Div. Science, Truman State Univ., Kirksville, MO 63501, USA

Fortin, M., Y. Mauffette, et al. (1997). The effects of ozone-exposed sugar maple seedlings on the biological performance and the feeding preference of the forest tent caterpillar (Malacosoma disstria Hbn.). Environmental Pollution 97(3): 303-309. {a} Groupe de recherche en ecologie forestiere, Univ. du Quebec a Montreal, C.P. 8888 Succ. A, Montreal, QC H3C 3P8, Canada

Goebel, P. C. and D. M. Hix (1997). Changes in the composition and structure of mixed-oak, second-growth forest ecosystems during the understory reinitiation stage of stand development. Ecoscience 4(3): 327-339. {a} Sch. Forestry Wood Products, Michigan Technological Univ., 1400 Townsend Dr., Houghton, MI 49931-1295, USA

Graves, W. R. and A. S. Aiello (1997). High root-zone temperature causes similar changes in water relations and growth of silver maples from 33 degrees and 44 degrees N latitude. Journal of the American Society for Horticultural Science 122(2): 195-199. {a} Dep. Hortic., Iowa State Univ., Ames, IA 50011-1100, USA

Henry, P. H. and J. E. Preece (1997). Production and rooting of shoots generated from dormant stem sections of maple species. Hortscience 32(7): 1274-1275. {a} Dep. Plant Soil Gen. Agric., South. Ill. Univ., Carbondale, IL 62901, USA

Henry, P. H. and J. E. Preece (1997). Production of shoots from dormant species of Acer as influenced by length and caliper of stem sections. Journal of Environmental Horticulture 15(3): 153-156. {a} Dep. Plant, Soil, General Agric., Southern Illinois Univ., Carbondale IL 62901, USA

Hix, D. M. and J. N. Pearcy (1997). Forest ecosystems of the Marietta Unit, Wayne National Forest, southeastern Ohio: Multifactor classification and analysis. Canadian Journal of Forest Research 27(7): 1117-1131. Ohio State Univ., Sch. Natural Resources, 2021 Coffey Road, Columbus, OH 43210-1085, USA

Kinney, K. K. and R. L. Lindroth (1997). Responses of three deciduous tree species to atmospheric CO-2 and soil NO-3- availability. Canadian Journal of Forest Research 27(1): 1-10. Dep. Entomol., 237 Russell Lab., 1630 Linden Drive, Univ. Wisconsin, Madison, WI 53706, USA

Kinney, K. K., R. L. Lindroth, et al. (1997). Effects of CO-2 and NO-3- availability on deciduous trees: Phytochemistry and insect performance. Ecology Washington D C 78(1): 215-230. {a} Dep. Entomol., 237 Russell Lab., 1630 Linden Drive, Univ. Wis., Madison, WI 53706, USA

Kobe, R. K. (1997). Carbohydrate allocation to storage as a basis of interspecific variation in sapling survivorship and growth. Oikos 80(2): 226-233. Dep. For., Mich. State Univ., Nat. Resources Build., East Lansing, MI 48824-1222, USA

Kruger, E. L. and P. B. Reich (1997). Responses of hardwood regeneration to fire in mesic forest openings. III. Whole-plant growth, biomass distribution, and nitrogen and carbohydrate relations. Canadian Journal of Forest Research 27(11): 1841-1850. {a} Dep. Forestry, Unv. Wis.-Madison, 120 Russell Labs, 1630 Linden Avenue, Madison, WI 53706, USA

Kruger, E. L. and P. B. Reich (1997). Responses of hardwood regeneration to fire in mesic forest openings. II. Leaf gas exchange, nitrogen concentration, and water status. Canadian Journal of Forest Research 27(11): 1832-1840. {a} Dep. Forestry, Univ. Wis.-Madison, 120 Russell Lab., 1630 Linden Avenue, Madison, WI 53706, USA

Kruger, E. L. and P. B. Reich (1997). Responses of hardwood regeneration to fire in mesic forest openings. I. Post-fire community dynamics. Canadian Journal of Forest Research 27(11): 1822-1831. {a} Dep. Forestry, Univ. Wis.-Madison, 120 Russell Labs., 1630 Linden Avenue, Madison, WI 53706, USA

Lei, T. T. and M. J. Lechowicz (1997). The photosynthetic response of eight species of Acer to simulated light regimes from the centre and edges of gaps. Functional Ecology 11(1): 16-23. {a} Biol. Dep., Virginia Polytechnic Inst. State Univ., Blacksburg, VA 24061, USA

Lei, T. T. and M. J. Lechowicz (1997). Functional responses of Acer species to two simulated forest gap environments: Leaf-level properties and photosynthesis. Photosynthetica Prague 33(2): 277-289. {a} Dep. Biol., Virginia Polytechnic Inst. State Univ., Blacksburg, VA 24061, USA

Leskey, T. C., D. A. J. Teulon, et al. (1997). Effects of temperature and sugar maple pollen on oviposition and longevity of pear thrips (Thysanoptera: Thripidae). Environmental Entomology 26(3): 566-571. {a} Dep. Entomol., Pennsylvania State Univ., University Park, PA 16802, USA

Liang, C. L. G., G. Li, et al. (1997). Study on the use of systemic and pyrethroid insecticides to control Anoplophora glabripennis and Apriona germari. Forest Research 10(2): 189-193. {a} Res. Inst. For. Prot., CAF, Beijing 100091, China

Liu, X., D. S. Ellsworth, et al. (1997). Leaf nutrition and photosynthetic performance of sugar maple (Acer saccharum) in stands with contrasting health conditions. Tree Physiology 17(3): 169-178. Dep. Bot., University Vermont, Burlington, VT 05405, USA

Liu, X. and M. T. Tyree (1997). Root carbohydrate reserves, mineral nutrient concentrations and biomass in a healthy and a declining sugar maple (Acer saccharum) stand. Tree Physiology 17(3): 179-185. Dep. Bot., University Vermont, Burlington, VT 05405-008, USA

Long, R. P., S. B. Horsley, et al. (1997). Impact of forest liming on growth and crown vigor of sugar maple and associated hardwoods. Canadian Journal of Forest Research 27(10): 1560-1573. {a} USDA Forest Service, Northeastern Forest Experiment Station, Delaware, OH 43015, USA

Mahony, N., E. Nol, et al. (1997). Food-chain chemistry, reproductive success, and foraging behaviour of songbirds in acidified maple forests of central Ontario. Canadian Journal of Zoology 75(4): 509-517. {a} 74 Foster Ave., Guelph, ON N1H 3B3, Canada

Meiners, S. J. and E. W. Stiles (1997). Selective predation on the seeds of woody plants. Journal of the Torrey Botanical Society 124(1): 67-70. Dep. Ecol. Evol. Nat. Resources, Rutgers Univ., P.O. Box 231, New Brunswick, NJ 08903-0231, USA

Miller, F. D. (1997). Effects and control of periodical cicada Magicicada septendecim and Magicicada cassini oviposition injury on urban forest trees. Journal of Arboriculture 23(6): 225-232. {a} Univ. Illinois, Countryside Extension Cent., 6438 Joliet Rd., Countryside, IL 60525, USA

Miller, G. W. (1997). Stand dynamics in 60-year-old Allegheny hardwoods after thinning. Canadian Journal of Forest Research 27(10): 1645-1657. {a} USDA Forest Service, Timber Watershed Lab., PO Box 404, Parsons, WV 26287, USA

Mohamed, H. K., S. Pathak, et al. (1997). Relationship between sugar maple decline and corresponding chemical changes in the stem tissue. Water Air and Soil Pollution 96(1-4): 321-327. {a} Fac. Forestry, Univ. Toronto, Toronto, ON M5S 3B3, Canada

Naidu, S. L. and E. H. Delucia (1997). Acclimation of shade-developed leaves on saplings exposed to late-season canopy gaps. Tree Physiology 17(6): 367-376. Dep. Plant Biol., Univ. Illinois Urbana-Champaign, Urbana, IL 61801, USA

Nicol, R. W., J. T. Arnason, et al. (1997). Effect of host and nonhost trees on the growth and development of the forest tent caterpillar, Malacosoma disstria (Lepidoptera: Lasiocampidae). Canadian Entomologist 129(6): 991-999. {a} Can. For. Serv., Nat. Resour. Can., 1219 Queen St., Sault Ste. Marie, ON P6A 5M7, Canada

Niinemets, U. and J. D. Tenhunen (1997). A model separating leaf structural and physiological effects on carbon gain along light gradients for the shade-tolerant species Acer saccharum. Plant Cell and Environment 20(7): 845-866. {a} Inst. Ecol., Estonian Academy Sci., Riia 181, EE-2400 Tartu, Estonia

O, D. D. J. and M. F. Willson (1997). Leaf domatia and the distribution and abundance of foliar mites in broadleaf deciduous forest in Wisconsin. American Midland Naturalist 137(2): 337-348. {a} Inst. Pacific Islands Forestry, 1643 Kilauea Avenue, Hilo, HI 96720, USA

Ostfeld, R. S., R. H. Manson, et al. (1997). Effects of rodents on survival of tree seeds and seedlings invading old fields. Ecology Washington D C 78(5): 1531-1542. Inst. Ecosystem Studies, Box AB, Millbrook, NY 12545, USA

Pregitxer, K. S., M. E. Kubiske, et al. (1997). Relationships among root branch order, carbon, and nitrogen in four temperate species. Oecologia Berlin 111(3): 302-308. {a} Sch. Forestry Wood Products, Michigan Technological Univ., 1400 Townsend Ave., Houghton, MI 49931, USA

Raulier, F. and C. H. Ung (1997). Influence of shading on the relationship between leaf area and crown surface area in sugar maple stands. Ecological Modelling 104(1): 51-69. {a} Nat. Resour. Canada, Canadian Forest Serv., Laurential Forestry Centre, 1055 du P.E.P.S., P.O. Box 3800, Sainte-Foy, PQ G1V 4C7, Canada

Reader, R. J. (1997). Potential effects of granivores on old field succession. Canadian Journal of Botany 75(12): 2224-2227. {a} Deps. Botany, Univ. Guelph, Guelph, ON N1G 2W1, Canada

Rebbeck, J. and K. V. Loats (1997). Ozone effects on seedling sugar maple (Acer saccharum) and yellow-poplar (Liriodendron tulipifera): Gas exchange. Canadian Journal of Forest Research 27(10): 1595-1605. {a} USDA Forest Service, Northeastern Forest Experiment Station, 359 Main Rd., Delaware, OH 43015, USA

Retzlaff, W. A., D. A. Weinstein, et al. (1997). Simulating the growth of a 160-year-old sugar maple (Acer saccharum) tree with and without ozone exposure using the TREGRO model. Canadian Journal of Forest Research 27(5): 783-789. {a} Boyce Thompson Inst. Plant Res., Tower Road, Ithaca, NY 14853-1801, USA

Roth, S., E. P. McDonald, et al. (1997). Atmospheric CO-2 and soil water availability: Consequences for tree-insect interactions. Canadian Journal of Forest Research 27(8): 1281-1290. {a} Dep. Entomol., 1630 Linden Drive, Univ. Wisconsin-Madison, Madison, WI 53706, USA

Singer, M. T. and C. G. Lorimer (1997). Crown release as a potential old-growth restoration approach in northern hardwoods. Canadian Journal of Forest Research 27(8): 1222-1232. {a} Dep. Forestry, Univ. Wisconsin-Madison, Madison, WI 53706, USA

Skepner, A. P. and D. E. Krane (1997). cpDNA of Acer saccharum and Acer nigrum are very similar. Ohio Journal of Science 97(4): 90-93. {a} Dep. Biol. Sci., Wright State Univ., Dayton, OH 45435, USA

Van, B. N., A. C. Finzi, et al. (1997). Canopy tree-soil interactions within temperate forests: Effects of soil elemental composition and texture on species distributions. Canadian Journal of Forest Research 27(7): 1110-1116. {a} Dep. Soil Sci. and Geol., Wageningen Agric. Univ., P.O. Box 37, 6700 AA Wageningen, Netherlands

Wagrowski, D. M. and R. A. Hites (1997). Polycyclic aromatic hydrocarbon accumulation in urban, suburban, and rural vegetation. Environmental Science and Technology 31(1): 279-282. {a} Sch. Public Environmental Affairs, Dep. Chemistry, Indiana Univ., Bloomington, IN 47405, USA

Wall, R. E. (1997). Fructification of Chondrostereum purpureum on hardwoods inoculated for biological control. Canadian Journal of Plant Pathology 19(2): 181-184. 506 Belson St., Parksville, BC V9P 1B5, Canada

Walters, M. B. and P. B. Reich (1997). Growth of Acer saccharum seedlings in deeply shaded understories of northern Wisconsin: Effects of nitrogen and water availability. Canadian Journal of Forest Research 27(2): 237-247. {a} Fac. Natural Resources Environmental Studies, Univ. Northern British Columbia, Prince George, BC V2N 4Z9, Canada

Zaczek, J. J., C. W. Heuser, Jr., et al. (1997). Effect of shade levels and IBA during the rooting of eight tree taxa. Journal of Environmental Horticulture 15(1): 56-60. {a} Sch. For. Resources, Pennsylvania State Univ., University Park, PA 16802, USA

Abrams, M. D. and D. M. McCay (1996). Vegetation-site relationships of witness trees (1780-1856) in the presettlement forests of eastern West Virginia. Canadian Journal of Forest Research 26(2): 217-224. {a} Pennsylvania State University, School Forest Resources, 4 Ferguson Building, University Park, PA 16802, USA

Adams, M. B. and T. R. Angradi (1996). Decomposition and nutrient dynamics of hardwood leaf litter in the Fernow whole-watershed acidification experiment. Forest Ecology and Management 83(1-2): 61-69. {a} USDA Forest Serv., Timber Watershed Lab., Parsons, WV, USA

Baker, R. G., E. A. I. Bettisi, et al. (1996). Holocene paleoenvironments of northeast Iowa. Ecological Monographs 66(2): 203-234. {a} Dep. Geol., Univ. Iowa, Iowa City, IA 52242-1379, USA

Burton, A. J., K. S. Pregitzer, et al. (1996). Latitudinal variation in sugar maple fine root respiration. Canadian Journal of Forest Research 26(10): 1761-1768. {a} Sch. Forestry Wood Products, Michigan Technol. Univ., Houghton, MI 49931, USA

Canham, C. D., A. R. Berkowitz, et al. (1996). Biomass allocation and multiple resource limitation in tree seedlings. Canadian Journal of Forest Research 26(9): 1521-1530. {a} Inst. Ecosystem Studies, Box AB, Millbrook, NY 12545, USA

Close, R. E., J. J. Kielbaso, et al. (1996). Urban vs. natural sugar maple growth: II. Water relations. Journal of Arboriculture 22(4): 187-192. {a} Dep. Forestry, Mich. State Univ., East Lansing, MI 48824, USA

Close, R. E., P. V. Nguyen, et al. (1996). Urban vs. natural sugar maple growth: I. Stress symptoms and phenology in relation to site characteristics. Journal of Arboriculture 22(3): 144-150. Dep. Forestry, Mich. State Univ., E. Langsing, MI 48824-1222, USA

Dahir, S. E. and C. G. Lorimer (1996). Variation in canopy gap formation among developmental stages of northern hardwood stands. Canadian Journal of Forest Research 26(10): 1875-1892. {a} Dep. Forestry, Univ. Wisconsin-Madison, Madison, WI 53706, USA

Dawson, T. E. (1996). Determining water use by trees and forests from isotopic, energy balance and transpiration analyses: The roles of tree size and hydraulic lift. Tree Physiology 16(1-2): 263-272. Section Ecol. Systematics, Corson Hall, Cornell Univ., Ithaca, NY 14853, USA

Delucia, E. H., K. Nelson, et al. (1996). Contribution of intercellular reflectance to photosynthesis in shade leaves. Plant Cell and Environment 19(2): 159-170. {a} Dep. Plant Biology, Univ. Ill., Urbana, IL 61801, USA

Emerman, S. H. and T. E. Dawson (1996). Hydraulic lift and its influence on the water content of the rhizosphere: An example from sugar maple, Acer saccharum. Oecologia Berlin 108(2): 273-278. Section Ecology Systematics, Cornell Univ., Ithaca, NY 14853, USA

Ferrari, J. B. and S. Sugita (1996). A spatially explicit model of leaf litter fall in hemlock-hardwood forests. Canadian Journal of Forest Research 26(11): 1905-1913. {a} Dep. Biol., Wesleyan Coll., Macon, GA 31297-4299, USA

Franklin, S. B. (1996). A community view of disturbance and vegetation dynamics. Joensuun Yliopiston Luonnontieteellisia Julkaisuja(36): 1-21. Dep. Biol., Southern Illinois Univ., Carbondale, IL 62901-6509, USA

Harrington, T. C., J. P. Steimel, et al. (1996). Isozyme variation and species delimitation in the Ceratocystis coerulescens complex. Mycologia 88(1): 104-113. {a} Dep. Plant Pathol., Iowa State Univ., Ames, IA 50011, USA

Harris, M. M. and L. O. Safford (1996). Effects of season and four tree species on soluble carbon content in fresh and decomposing litter of temperate forests. Soil Science 161(2): 130-135. Northeastern For. Exp. Stn., USDA For. Serv., Durham, NH 03824, USA

Hartman, J. R., U. E. Jarlfors, et al. (1996). First report of bacterial leaf scorch caused by Xylella fastidiosa on sugar maple and sweetgum. Plant Disease 80(11): 1302. {a} Dep. Plant Pathol., Univ. Kentucky, Lexington, KY 40546, USA

Hilbert, D. W. and C. Messier (1996). Physical simulation of trees to study the effects of forest light environment, branch type and branch spacing on light interception and transmission. Functional Ecology 10(6): 777-783. {a} Tropical Forest Res. Cent., PO Box 780, Atherton, QLD 4883, Australia

Huddle, J. A. and S. G. Pallardy (1996). Effects of soil and stem base heating on survival, resprouting and gas exchange of Acer and Quercus seedlings. Tree Physiology 16(6): 583-589. {a} Dep. Rangeland Ecol. Management, Texas A and M Univ., College Station, TX 77843, USA

Jose, S. and A. R. Gillespie (1996). Aboveground production efficiency and canopy nutrient contents of mixed-hardwood forest communities along a moisture gradient in the central United States. Canadian Journal of Forest Research 26(12): 2214-2223. {a} Dep. Forestry Nat. Resour., 1159 Forestry Build., Purdue Univ., West Lafayette, IN 47907-1159, USA

Kim, K. H. and J. M. Park (1996). A study on the pollen morphology of the genus Acer L. in Korea. Journal of Korean Forestry Society 85(3): 472-486. {a} Faculty Forest Science, Coll. Agriculture, Chonbuk National Univ., Chonju 561-756, South Korea

Klironomos, J. N. and W. B. Kendrick (1996). Palatability of microfungi to soil arthropods in relation to the functioning of arbuscular mycorrhizae. Biology and Fertility of Soils 21(1-2): 43-52. {a} Biol. Dep. Soil Ecol. Restoration Group, San Diego State Univ., San Diego, CA 92182, USA

Kupfer, J. A. and J. R. Runkle (1996). Early gap successional pathways in a Fagus-Acer forest preserve: Pattern and determinants. Journal of Vegetation Science 7(2): 247-256. {a} Dep. Geography Planning, Univ. Memphis, Memphis, TN 38152, USA

Leak, W. B. and M. L. Smith (1996). Sixty years of management and natural disturbance in a New England forested landscape. Forest Ecology and Management 81(1-3): 63-73. {a} USDA Forest Service, Northeastern Forest Experiment Station, PO Box 640, Durham, NH 03824, USA

Lovett, G. M., S. S. Nolan, et al. (1996). Factors regulating throughfall flux in a New Hampshire forested landscape. Canadian Journal of Forest Research 26(12): 2134-2144. {a} Inst. Ecosystem Studies, Box AB, Millbrook, NY 12545, USA

McCarthy, B. C. and D. R. Bailey (1996). Composition, structure, and disturbance history of Crabtree Woods: An old-growth forest of western Maryland. Bulletin of the Torrey Botanical Club 123(4): 350-365. {a} Dep. Environ. Plant Biol., Ohio University, Athens, OH 45701-2979, USA

McLaughlin, J. W., D. D. Reed, et al. (1996). Relationships between soluble sugar concentrations in roots and ecosystem stress for first-year sugar maple seedlings. Water Air and Soil Pollution 88(1-2): 1-19. {a} Dep. Applied Ecol. Environ. Sci., Deering Hall, Univ. Maine, Orono, ME 04469, USA

Moutoglis, P. and P. Widden (1996). Vesicular-arbuscular mycorrhizal spore populations in sugar maple (Acer saccharum Marsh. L.) forests. Mycorrhiza 6(2): 91-97. {a} Biol. Dep., Concordia Univ., 1455 de Maisonneuve W., Montreal, PQ H3G 1M8, Canada

Niklas, K. J. (1996). Differences between Acer saccharum leaves from open and wind-protected sites. Annals of Botany London 78(1): 61-66. Sect. Plant Biol., Cornell Univ., Ithaca, NY 14853, USA

Nowak, C. A. (1996). Wood volume increment in thinned, 50- to 55-year-old, mixed-species Allegheny hardwoods. Canadian Journal of Forest Research 26(5): 819-835. U.S. Dep. Agric. Forest Serv., Northeastern Forest Exp. Station, Forestry Sci. Lab., P.O. Box 928, Warren, PA 16365, USA

Oliarnyk, C. J. and R. J. Robertson (1996). Breeding behavior and reproductive success of Cerulean Warblers in Southeastern Ontario. Wilson Bulletin 108(4): 673-684. Dep. Biol., Queen's Univ., Kingston, ON K7L 3N6, Canada

Ouimet, R., C. Camire, et al. (1996). Effect of soil K, Ca and Mg saturation and endomycorrhization on growth and nutrient uptake of sugar maple seedlings. Plant and Soil 179(2): 207-216. {a} Direction recherche forestiere, Ministere ressources naturelles, 2700, rue Einstein, Sainte-Foy, PQ G1P 3W8, Canada

Ouimet, R., C. Camire, et al. (1996). Effect of soil base saturation and endomycorrhization on growth and nutrient status of sugar maple seedlings. Canadian Journal of Soil Science 76(2): 109-115. {a} Ministere Ressources Naturelles, 2700 rue Einstein, Sainte-Foy, PQ G1P 3W8, Canada

Payette, S., M. J. Fortin, et al. (1996). The recent sugar maple decline in southern Quebec: Probable causes deduced from tree rings. Canadian Journal of Forest Research 26(6): 1069-1078. {a} Centre d'Etudes Nordiques, Dep. Biologie, Univ. Laval, Sainte-Foy, PQ G1K 7P4, Canada

Pilon, C. E., B. Cote, et al. (1996). Effect of an artificially induced drought on leaf peroxidase activity, mineral nutrition and growth of sugar maple. Plant and Soil 179(2): 151-158. {a} Dep. Natural Resource Sci., Macdonald Campus McGill Univ., 21, 111 Lakeshore, Ste-Anne-de-Bellevue, PQ H9X 3V9, Canada

Pothier, D. (1996). Growth in a maple forest following thinning cuts: Results after 20 years. Canadian Journal of Forest Research 26(4): 543-549. Recherche Forestiere, Ministere des Ressources Naturelles du Quebec, 2700 rue Einstein, Sainte-Foy, PQ G1P W8, Canada

Poulson, T. L. and W. J. Platt (1996). Replacement patterns of beech and sugar maple in Warren Woods, Michigan. Ecology Washington D C 77(4): 1234-1253. {a} Dep. Biol. Sci., Univ. Illinois Chicago, 845 W. Taylor St., Chicago, IL 60607-7060, USA

Rebbeck, J. (1996). Chronic ozone effects on three northeastern hardwood species: Growth and biomass. Canadian Journal of Forest Research 26(10): 1788-1798. USDA Forest Serv., Northeastern Forest Exp. Stn., 359 Main Rd., Delaware, OH 43015, USA

Retzlaff, W. A., D. A. Weinstein, et al. (1996). Simulated root dynamics of a 160-year-old sugar maple (Acer saccharum Marsh.) tree with and without ozone exposure using the TREGRO model. Tree Physiology 16(11-12): 915-921. Boyce Thompson Inst. Plant Res., Tower Rd., Ithaca, NY 14853-1801, USA

Rothstein, D. E., D. R. Zak, et al. (1996). Nitrate deposition in northern hardwood forests and the nitrogen metabolism of Acer saccharum marsh. Oecologia Berlin 108(2): 338-344. {a} Sch. Natural Resources Environment, Univ. Michigan, Ann Arbor, MI 48109, USA

Schibig, J. (1996). Twenty years of forest change at Radnor Lake Natural Area, Davidson County, middle Tennessee. Journal of the Tennessee Academy of Science 71(3): 57-72. Dep. Biol., Volunteer State Community Coll., Gallatin, TN 37066, USA

Simmons, J. A. V. J. F., R. D. Briggs, et al. (1996). Forest floor carbon pools and fluxes along a regional climate gradient in Maine, USA. Forest Ecology and Management 84(1-3): 81-95. {a} Biology Dep., West Virginia, Wesleyan College, Bukhannon, WV 26201, USA

Skinner, M. and B. L. Parker (1996). Emergence of pear thrips (Thysanoptera: Thripidae) and its relation to foliar damage. Environmental Entomology 25(2): 350-358. Univ. Vermont, Entomol. Res. Lab., P.O. Box 53400, Burlington, VT 05405-3400, USA

Talley, S. M., R. O. Lawton, et al. (1996). Host preferences of Rhus radicans (Anacardiaceae) in a southern deciduous harwood forest. Ecology Washington D C 77(4): 1271-1276. {a} Dep. Biol. Sci., Univ. Alabama Huntsville, Huntsville, AL 35899, USA

Thirukkumaran, C. M. and I. K. Morrison (1996). Impact of simulated acid rain on microbial respiration, biomass, and metabolic quotient in a mature sugar maple (Acer saccharum) forest floor. Canadian Journal of Forest Research 26(8): 1446-1453. {a} Canadian For. Serv., Great Lakes For. Cent., P.O. Box 490, Sault Ste. Marie, ON P6A 5M7, Canada

Walters, M. B. and P. B. Reich (1996). Are shade tolerance, survival, and growth linked? Low light and nitrogen effects on hardwood seedlings. Ecology Washington D C 77(3): 841-853. {a} Dep. Nat. Resour. Environ. Studies, Univ. Northern B. C., Prince George, BC V2N 4Z9, Canada

Watson, G. W. and S. Clark (1996). When the roots go round and round. Arnoldia Jamaica Plain 56(1): 15-21. {a} Morton Arboretum, Lisle, IL, USA

Wilmot, T. R., D. S. Ellsworth, et al. (1996). Base cation fertilization and liming effects on nutrition and growth of Vermont sugar maple stands. Forest Ecology and Management 84(1-3): 123-134. {a} Dep. Applied Sci., Biosystems and Process Sci. Div., Brookhaven Natl. Lab., Upton, NY 11973, USA

Wyckoff, P. H. and S. L. Webb (1996). Understory influence of the invasive Norway maple (Acer platanoides). Bulletin of the Torrey Botanical Club 123(3): 197-205. {a} Bot. Dep., Box 90339, Duke Univ., Durham, NC 27708, USA

Yoke, K. A. and J. C. Rennie (1996). Landscape ecosystem classification in the Cherokee National Forest, East Tennessee, U.S.A. Environmental Monitoring and Assessment 39(1-3): 323-338. Dep. Forestry Wildlife Fisheries, Univ. Tennessee, Knoxville, TN 37901-1071, USA

Zobel, D. B. (1996). Variation of water relations parameters with extended rehydration time, leaf form, season, and proportion of leaf. Canadian Journal of Forest Research 26(2): 175-185. Department Botany Plant Pathology, Oregon State University, Corvallis, OR 97331, USA

Zogg, G. P., D. R. Zak, et al. (1996). Fine root respiration in northern hardwood forests in relation to temperature and nitrogen availability. Tree Physiology 16(8): 719-725. {a} Sch. Natural Resources Environment, Univ. Mich., Ann Arbor, MI 48109-1115, USA

Berkowitz, A. R., C. D. Canham, et al. (1995). Competition vs. facilitation of tree seedling growth and survival in early successional communities. Ecology Washington D C 76(4): 1156-1168. Inst. Ecosystem Studies, Box AB, Millbrook, NY 12545, USA

Bertrand, A., G. Robitaille, et al. (1995). Growth and ABA responses of maple seedlings to aluminum. Tree Physiology 15(12): 775-782. {a} Natural Resour. Canada Canadian Forest Service-Quebec Region, PO Box 3800, Sainte-Foy, PQ G1V 4C7, Canada

Boerner, R. E. J. and J. Rebbeck (1995). Decomposition and nitrogen release from leaves of three hardwood species grown under elevated O-3 and/or CO-2. Plant and Soil 170(1): 147-157. {a} Dep. Plant Biol., Ohio State Univ., 1735 Neil Ave., Columbus, OH 43210, USA

Boutin, R. and G. Robitaille (1995). Increased soil nitrate losses under mature sugar maple trees affected by experimentally induced deep frost. Canadian Journal of Forest Research 25(4): 588-602. {a} Nat. Resour. Canada, Canadian Forest Serv., Quebec Region, 1055 PEPS, PO Box 3800, Sainte-Foy, PQ G1V 4C7, Canada

Bradley, R. L. and J. W. Fyles (1995). A kinetic parameter describing soil available carbon and its relationship to rate increase in C mineralization. Soil Biology and Biochemistry 27(2): 167-172. {a} Dep. Natural Resource Sci., McGill Univ., Macdonald Campus, Ste-Anne de Bellevue, PQ H9X 3V9, Canada

Brown, D. (1995). The impact of species introduced to control tree invasion on the vegetation of an electrical utility right-of-way. Canadian Journal of Botany 73(8): 1217-1228. Ontario Hydro Technol., 800 Kipling Ave., KJ 135, Toronto, ON M8Z 5S4, Canada

Buhay, W. M. and T. W. D. Edwards (1995). Climate in southwestern Ontario, Canada, between AD 1610 and 1885 inferred from oxygen and hydrogen isotopic measurements of wood cellulose from trees in different hydrologic settings. Quaternary Research Orlando 44(3): 438-446. {a} Godwin Institute for Quaternary Research, Cambridge University, Free School Lane, Cambridge CB2 3RS, UK

Burton, P. J. and F. A. Bazzaz (1995). Ecophysiological responses of tree seedlings invading different patches of old-field vegetation. Journal of Ecology 83(1): 99-112. {a} Dep. Forest Sci., Univ. British Columbia, 270-2357 Main Mall, Vancouver, BC V6T 1Z4, Canada

Chester, E. W., R. J. Jensen, et al. (1995). Forest communities of Montgomery and Stewart counties, northwestern Middle Tennessee. Journal of the Tennessee Academy of Science 70(3-4): 82-91. {a} Dep. Biology, Austin Peay State Univ., Clarksville, TN 37044, USA

Cho, D. S. and R. E. J. Boerner (1995). Dendrochronological analysis of the canopy history of two Ohio old-growth forests. Vegetatio 120(2): 173-183. {a} Dep. Plant Biol., Ohio State Univ., 1735 Neil Ave., Columbus, OH 43210, USA

Conley, M. E., E. T. Paparozzi, et al. (1995). Leaf tatter in Acer saccharum: An anatomical link. International Journal of Plant Sciences 156(3): 303-310. {a} Dep. Horticulture, Univ. Nebraska Lincoln, Lincoln, NE 68583-0724, USA

Cote, B. and C. Camire (1995). Application of leaf, soil, and tree ring chemistry to determine the nutritional status of sugar maple on sites of different levels of decline. Water Air and Soil Pollution 83(3-4): 363-373. {a} Dep. Renewable Resources, Macdonald Campus McGill Univ., 21, 111 Lakeshore, Ste-Anne-de-Bellevue, QC, H9X 3V9, Canada

Cote, B. V. O. H., W. H. Hendershot, et al. (1995). Possible interference of fertilization in the natural recovery of a declining sugar maple stand in southern Quebec. Plant and Soil 168-169: 471-480. Dep. Nat. Resour. Sci., Macdonald Campus of McGill Univ., 21, 111 Lakeshore, Ste-Anne-de-Bellevue, PQ H9X 3V9, Canada

Day, S. D., N. L. Bassuk, et al. (1995). Effects of Four Compaction Remediation Methods for Landscape Trees on Soil Aeration, Mechanical Impedance and Tree Establishment. Journal of Environmental Horticulture 13(2): 64-71. {a} Dep. Horticulture, Virginia Polytech. Inst. State Univ., Blacksburg, VA 24061, USA

De, B. S. and A. Bouchard (1995). Dynamics of Thuja occidentalis in an agricultural landscape of southern Quebec. Journal of Vegetation Science 6(4): 531-542. {a} Inst. Recherche Biol. Vegetale, Univ. Montreal, 4101 est, rue Sherbrooke, Montreal, PQ H1X 2B2, Canada

Dixon, M. J. and A. L. Kuja (1995). Effects of simulated acid rain on the growth, nutrition, foliar pigments and photosynthetic rates of sugar maple and white spruce seedlings. Water Air and Soil Pollution 83(3-4): 219-236. Phytotoxicol. Sect., Standards Development Branch, Ontario Ministry Environment Energy, 135 St. Clair Ave. W., Toronto, ON M4V 1P5, Canada

Gilliam, F. S., N. L. Turrill, et al. (1995). Herbaceous-layer and overstory species in clear-cut and mature central Appalachian hardwood forests. Ecological Applications 5(4): 947-955. {a} Dep. Biol. Sci., Marshall Univ., Huntington, WV 25755, USA

Heckman, J. R. and D. Kluchinski (1995). Soybean nodulation and nitrogen fixation on soil amended with plant residues. Biology and Fertility of Soils 20(4): 284-288. {a} Plant Sci. Dep., Lipman Hall, Rutgers Univ., New Brunswick, NJ 08903, USA

Heisey, R. M. (1995). Growth trends and nutritional status of sugar maple stands on the Appalachian plateau of Pennsylvania, U.S.A. Water Air and Soil Pollution 82(3-4): 675-693. Dep. Biol., Pa. State Univ., 200 University Dr., Schuylkill Haven, PA 17972, USA

Hill, B. H. and W. T. Perrotte, Jr. (1995). Microbial colonization, respiration, and breakdown of maple leaves along a stream-marsh continuum. Hydrobiologia 312(1): 11-16. {a} U.S. Environ. Prot. Agency, 3411 Church St., Cincinnati, OH 45224, USA

Houle, G. (1995). Seed dispersal and seedling recruitment: The missing link(s). Ecoscience 2(3): 238-244. Cent. d'Etudes Nordiques, Dep. Biol., Univ. Laval, St. Foy, Quebec G1K 7P4, Canada

Klironomos, J. N. (1995). Arbuscular mycorrhizae of Acer saccharum in different soil types. Canadian Journal of Botany 73(11): 1824-1830. Biol. Dep., San Diego State Univ., San Diego, CA 92182-0057, USA

Klironomos, J. N. and M. F. Allen (1995). UV-B-mediated changes on below-ground communities associated with the roots of Acer saccharum. Functional Ecology 9(6): 923-930. {a} Biol. Dep., San Diego State Univ., San Diego, CA 92182-0057, USA

Klironomos, J. N. and W. B. Kendrick (1995). Stimulative effects of arthropods on endomycorrhizas of sugar maple in the presence of decaying litter. Functional Ecology 9(3): 528-536. {a} Biol. Dep. Soil Ecol. Restoration Group, San Diego State Univ., San Diego, CA 92182, USA

Kloeppel, B. D. and M. D. Abrams (1995). Ecophysiological attributes of the native Acer saccharum and the exotic Acer platanoides in urban oak forests in Pennsylvania, USA. Tree Physiology 15(11): 739-746. {a} Inst. Ecol., Univ. Georgia, Coweeta Hydrologic Lab., 3160 Coweeta Laboratory Rd., Otto, NC 28763, USA

Lenihan, J. M. and R. P. Neilson (1995). Canadian Vegetation Sensitivity To Projected Climatic Change At Three Organizational Levels. Climatic Change 30(1): 27-56. Pacific Northwest Research Station, 3200 SW Jefferson Way, Corvallis, OR 97333, USA

Maloney, D. C. and G. A. Lamberti (1995). Rapid decomposition of summer-input leaves in a northern Michigan stream. American Midland Naturalist 133(1): 184-195. {a} Dep. Biol. Sci., Univ. Notre Dame, Notre Dame, IN 46556, USA

Meldahl, K. H., D. Scott, et al. (1995). Autochthonous leaf assemblages as records of deciduous forest communities: An actualistic study. Lethaia 28(4): 383-394. Dep. Geol., Oberlin Coll., Oberlin, OH 44074, USA

Moutoglis, P., J. Klironomos, et al. (1995). Direct observation of spores of vesicular-arbuscular mycorrhizal fungi growing on sugar maple roots in the field, using sodium hexametaphosphate as a soil dispersant. Mycologia 87(3): 419-423. {a} Dep. Biol., Concordia Univ., 1455 de Maisonneuve W., Montreal, PQ H3G 1M8, Canada

Murphy, S. D. and L. Vasseur (1995). Pollen limitation in a northern population of Hepatica acutiloba. Canadian Journal of Botany 73(8): 1234-1241. {a} Dep. Crop Sci., Univ. Guelph, Guelph, ON N1G 2W1, Canada

Ouimet, R. and C. Camire (1995). Foliar deficiencies of sugar maple stands associated with soil cation imbalances in the Quebec Appalachians. Canadian Journal of Soil Science 75(2): 169-175. {a} Ministere des Ressources Naturelles, Direction de la Recherche, 2700 Einstein, Sainte-Foy, Quebec G1P 3W8, Canada

Ouimet, R., C. Camire, et al. (1995). Endomycorrhizal status of sugar maple in relation to tree decline and foliar, fine roots, and soil chemistry in the Beauce region, Quebec. Canadian Journal of Botany 73(8): 1168-1175. {a} Ministere ressources naturelles, Direction recherche, 2700 rue Einstein, Sainte-Foy, PQ G1P 3W8, Canada

Parshall, T. (1995). Canopy mortality and stand-scale change in a northern hemlock-hardwood forest. Canadian Journal of Forest Research 25(9): 1466-1478. 100 Ecology, Univ. Minn., St. Paul, MN 55108, USA

Pothier, D. (1995). Effect of lightning bolts and interannual climatic variations on the production and sugar concentration in maple tree sap. Canadian Journal of Forest Research 25(11): 1815-1820. Direction de la Recherche Forestiere, Ministere des Ressources Naturelles du Quebec, 2700 rue Einstein, Sainte-Foy, PQ G1P 3W8, Canada

Robitaille, G., R. Boutin, et al. (1995). Effects of soil freezing stress on sap flow and sugar content of mature sugar maples (Acer saccharum). Canadian Journal of Forest Research 25(4): 577-587. {a} Nat. Resour. Canada, Canadian Forest Serv., Quebec Region, 1055 PEPS, PO Box 3800, Sainte-Foy, PQ G1V 4C7, Canada

Schwadron, P. A. (1995). Distribution and persistence of American Chestnut sprouts, Castanea dentata (Marsh.) Borkh., in northeastern Ohio woodlands. Ohio Journal of Science 95(4): 281-288. Dep. Biol., Baldwin-Wallace College, Berea, OH 44017, USA

Simon, J. P., Y. Payette, et al. (1995). Comparative analysis of the genetic composition of canopy and juvenile sugar maple individuals (Acer saccharum) in an old-growth forest in southern Quebec as related to anthropogenic disturbance. Canadian Journal of Forest Research 25(5): 743-752. {a} Dep. Sci. Biologiques, Univ. Montreal, C.P. 6128, succursale Centre-Ville, Montreal, PQ H3C 3J7, Canada

Sipe, T. W. and F. A. Bazzaz (1995). Gap partitioning among maples (Acer) in central New England: Survival and growth. Ecology Washington D C 76(5): 1587-1602. {a} Dep. Biol., Gustavus Adolphus Coll., 800 College Ave., Saint Peter, MN 56082, USA

Stottlemyer, R., B. Travis, et al. (1995). Nitrogen mineralization in boreal forest stands of Isle Royale, northern Michigan. Water Air and Soil Pollution 82(1-2): 191-202. {a} Natl. Biol. Serv., 240 W. Prospect, Ft. Collins, CO 80526, USA

Svoboda, J. A., N. M. Schiff, et al. (1995). Sterol composition of three species of sawflies (Hymenoptera: Symphyta) and their dietary plant material. Experientia Basel 51(2): 150-152. Insect Neurobiol. Hormone Lab., Beltsville, MD 20705, USA

Teulon, D. A. and E. A. Cameron (1995). Within-tree distribution of pear thrips (Thysanoptera: Thripidae) in sugar maple. Environmental Entomology 24(2): 233-238. Dep. Entomol., Pa. State Univ., University Park, PA 16802, USA

Tjoelker, M. G., J. C. Volin, et al. (1995). Interaction of ozone pollution and light effects on photosynthesis in a forest canopy experiment. Plant Cell and Environment 18(8): 895-905. {a} Univ. Minnesota, Dep. Forest Resour., 115 Green Hall, 1530 N Cleveland Ave., St. Paul, MN 55108, USA

Tschaplinski, T. J., D. B. Stewart, et al. (1995). Interactions between drought and elevated CO-2 on growth and gas exchange of seedlings of three deciduous tree species. New Phytologist 129(1): 63-71. {a} Environ. Sci. Div., Oak Ridge Natl. Lab., Oak Ridge, TN 37831-6034, USA

Tschaplinski, T. J., D. B. Stewart, et al. (1995). Interactions between drought and elevated CO-2 on osmotic adjustment and solute concentrations of tree seedlings. New Phytologist 131(2): 169-177. {a} Environ. Sci. Div., Oak Ridge Natl. Lab., Oak Ridge, TN 37831-6034, USA

Wilmot, T. R., D. S. Ellsworth, et al. (1995). Relationships among crown condition, growth, and stand nutrition in seven northern Vermont sugarbushes. Canadian Journal of Forest Research 25(3): 386-397. {a} Dep. Applied Science, Biosystems Process Sciences Division, Brookhaven Natl. Lab., Upton, NY 11973, USA

Yang, X., G. M. Heisler, et al. (1995). Radiative properties of hardwood leaves to ultraviolet irradiation. International Journal of Biometeorology 38(2): 60-66. {a} Dep. Nat. Resources Management Eng., Univ. Conn., Storrs, CT 06269, USA

Zahka, G. A., K. L. Baggett, et al. (1995). Inoculum potential and other VAM fungi parameters in four sugar maple forests with different levels of stand dieback. Forest Ecology and Management 75(1-3): 123-134. {a} USDA Forest Serv., Northeastern Forest Exp. Stn., P.O. Box 968, Burlington, VT 05402, USA

Zhang, Y. and M. J. Mitchell (1995). Phosphorus cycling in a hardwood forest in the Adirondack Mountains, New York. Canadian Journal of Forest Research 25(1): 81-87. State Univ. N.Y., Coll. Environ. Sci. and Forestry, Syracuse, NY 13210, USA

Ballal, S. R., S. A. Fore, et al. (1994). Apparent gene flow and genetic structure of Acer saccharum subpopulations in forest fragments. Canadian Journal of Botany 72(9): 1311-1315. {a} Savannah River Ecol. Lab., Drawer E, Aiken, SC 29802, USA

Berguson, W. E., D. F. Grigal, et al. (1994). Relative stocking index: A proposed index of site quality. Canadian Journal of Forest Research 24(7): 1330-1336. {a} Dep. Soil Sci., Univ. Minn., St. Paul, MN 55108, USA

Bertrand, A., G. Robitaille, et al. (1994). Effects of soil freezing and drought stress on abscisic acid content of sugar maple sap and leaves. Tree Physiology 14(4): 413-425. {a} Natural Resources Can., Can. Forest Serv.-Quebec Region, 1055 du P.E.P.S., Sainte-Foy, PQ G1V 4C7, Canada

Bonser, S. P. and L. W. Aarssen (1994). Plastic allometry in young sugar maple (Acer saccharum): Adaptive responses to light availability. American Journal of Botany 81(4): 400-406. {a} Dep. Biol., Queen's University, Kingston, ON K7L 3N6, Canada

Breedlove, D. A., M. E. Foley, et al. (1994). Diffusion of 14C-flurprimidol in various carriers through excised silver maple bark. Journal of Arboriculture 20(2): 104-108. {a} Dep. For. Nat. Resour., Purdue Univ., West Lafayette, IN 47907, USA

Brisson, J., Y. Bergeron, et al. (1994). Beech-maple dynamics in a old-growth forest in southern Quebec, Canada. Ecoscience 1(1): 40-46. {a} Inst. Recherche Biol. Vegetale, 4101 est, rue Sherbrooke, Montreal, Quebec H1X 3B2, Canada

Brooks, R. T. (1994). A Regional-Scale Survey and Analysis of Forest Growth and Mortality as Affected by Site and Stand Factors and Acidic Deposition. Forest Science 40(3): 543-557. USDA Forest Serv., Northeastern Forest Exp. Stn., Univ. Massachusetts, Amherst, MA 01003, USA

Brown, D. (1994). The development of woody vegetation in the first 6 years following clear-cutting of a hardwood forest for a utility right-of-way. Forest Ecology and Management 65(2-3): 171-181. Ontario Hydro Technol., Natural Sci. Unit, 800 Kipling Ave., KD 118, Toronto, ON M8Z 5S4, Canada

Busing, R. T. (1994). Canopy cover and tree regeneration in old-growth cove forests of the Appalachian Mountains. Vegetatio 115(1): 19-27. USDA Forest Serv., Pacific Northwest Res. Stn, Corvallis, OR 97331, USA

Calme, S., F. J. Bigras, et al. (1994). Frost tolerance and bud dormancy of container-grown yellow birch, red oak and sugar maple seedlings. Tree Physiology 14(12): 1313-1325. {a} Centre Recherche Biol. Forestiere, Univ. Laval, Sainte-Foy, PQ G1K 7P4, Canada

Canham, C. D., A. C. Finzi, et al. (1994). Causes and consequences of resource heterogeneity in forests: Interspecific variation in light transmission by canopy trees. Canadian Journal of Forest Research 24(2): 337-349. {a} Institute Ecosystem Studies, Millbrook, NY 12545, USA

Cole, W. G. and C. G. Lorimer (1994). Predicting tree growth from crown variables in managed northern hardwood stands. Forest Ecology and Management 67(1-3): 159-175. {a} Ont. Forest Res. Inst., Ministry Natural Resources, P.O. Box 969, Sault Ste. Marie, ON P6A 5N5, Canada

Cote, B. and J. W. Fyles (1994). Leaf litter disappearance of hardwood species of southern Quebec: Interaction between litter quality and stand type. Ecoscience 1(4): 322-328. Dep. Natural Resource Sci., MacDonald Campus of McGill Univ., 21 111 Lakeshore, Sainte-Anne-de-Bellevue, Quebec H9X 3V9, Canada

Cote, B. and J. W. Fyles (1994). Nutrient concentration and acid-base status of leaf litter of tree species characteristic of the hardwood forest of southern Quebec. Canadian Journal of Forest Research 24(1): 192-196. {a} Dep. Renewable Resources, Macdonald Campus McGill Univ., 21 111 Lakeshore, Ste-Anne-de-Bellevue, PQ H9X 3V9, Canada

Crowell, M. and B. Freedman (1994). Vegetation development in a hardwood-forest chronosequence in Nova Scotia. Canadian Journal of Forest Research 24(2): 260-271. {a} Dep. Biology and School Resource and Environmental Studies, Dalhousie University, Halifax, NS B3H 4J1, Canada

Demars, B. G. (1994). An ordination analysis of the Tryon-Weber Woods (Crawford County, Pennsylvania). Journal of the Pennsylvania Academy of Science 68(3): 125-130. Dep. Plant Biol., Ohio State Univ., Columbus, OH 43210, USA

Dubey, T., S. L. Stephenson, et al. (1994). Effect of pH on the distribution and occurrence of aquatic fungi in six West Virginia mountain streams. Journal of Environmental Quality 23(6): 1271-1279. {a} Dep. Biol., Northern Ill. Univ., DeKalb, IL 60115, USA

Duckmanton, L. and P. Widden (1994). Effect of ozone on the development of vesicular-arbuscular mycorrhizae in sugar maple saplings. Mycologia 86(2): 181-186. {a} Biol. Dep., Concordia Univ., 1455 de Maisonneuve West, Montreal, PQ H3G 1M8, Canada

Ellsworth, D. S. and X. Liu (1994). Photosynthesis and canopy nutrition of four sugar maple forests on acid soils in northern Vermont. Canadian Journal of Forest Research 24(10): 2118-2127. {a} Dep. Applied Sci., Biosyst. Process Sci. Div., Brookhaven Natl. Lab., Upton, NY 11973-5000, USA

Ellsworth, D. S., M. T. Tyree, et al. (1994). Photosynthesis and water-use efficiency of sugar maple (Acer saccharum) in relation to pear thrips defoliation. Tree Physiology 14(6): 619-632. {a} Dep. Botany, Univ. Vermont, Burlington, VT 05405, USA

Frelich, L. E. and L. J. Graumlich (1994). Age-class distribution and spatial patterns in an old-growth hemlock-hardwood forest. Canadian Journal of Forest Research 24(9): 1939-1947. {a} Dep. Forest Resources, 115 Green Hall, 1530 North Cleveland Ave., St. Paul, MN 55108, USA

Fyles, J. W., B. Cote, et al. (1994). Effects of base cation fertilization on soil and foliage nutrient concentrations, and litter-fall and throughfall nutrient fluxes in a sugar maple forest. Canadian Journal of Forest Research 24(3): 542-549. {a} Dep. Renewable Resources, McGill University, Macdonald Campus, Sainte-Anne-de-Bellevue, QP H9X 3V9, Canada

Gagnon, G. and G. Roy (1994). Dieback of sugar maple (Acer saccharum Marsh.) in Quebec. Revue Forestiere Francaise Nancy 46(5): 512-521. {a} Direction Recherche Ministere Resources Nat., 2700 rue Einstein, Sainte-Foy, PQ G1P 3W8, Canada

Geburek, T. and K. P. Tripp (1994). Spatial Stand Structure of Sugar Maple (Acer saccharum Marsh.) in Ontario, Canada. Phyton Horn 34(2): 267-278. {a} Federal Forest Research Centre, Inst. Forest Genetics, Hauptstr. 7, A-1140 Vienna, Austria

Graves, W. R. (1994). Seedling development of sugar maple and black maple irrigated at various frequencies. Hortscience 29(11): 1292-1294. Dep. Horticulture, Iowa State Univ., Ames, IA 50011-1100, USA

Heitzman, E. and R. D. Nyland (1994). Influences of pin cherry (Prunus pensylvanica L. f.) on growth and development of young even-aged northern hardwoods. Forest Ecology and Management 67(1-3): 39-48. {a} State Univ. N.Y. Coll. Environ. Sci. and Forestry, Syracuse, NY 13210, USA

Hendershot, W. H. and F. Courchesne (1994). Effect of base cation addition on soil chemistry in a sugar maple forest of the Lower Laurentians, Quebec. Canadian Journal of Forest Research 24(3): 609-617. {a} Dep. Renewable Resources, McGill University, Macdonald Campus, Ste-Anne-de-Bellevue, QC H9X 3V9, Canada

Hengst, G. E. and J. O. Dawson (1994). Bark properties and fire resistance of selected tree species from the central hardwood region of North America. Canadian Journal of Forest Research 24(4): 688-696. {a} Dep. Forestry, Univ. Ill. Urbana-Champaign, Urbana, IL 61801, USA

Holmes, W. E. and D. R. Zak (1994). Soil microbial biomass dynamics and net nitrogen mineralization in northern hardwood ecosystems. Soil Science Society of America Journal 58(1): 238-243. {a} Sch. Natural Resoruces Environment, Univ. Michigan, 430 E. University Ave., Ann Arbor, MI 48109-1115, USA

Houle, G. (1994). Spatiotemporal patterns in the components of regeneration of four sympatric tree species-Acer rubrum, A. saccharum, Betula alleghaniensis and Fagus grandifolia. Journal of Ecology 82(1): 39-53. Centre d'etudes Nordiques Dep. de Biologie, Universite Laval, Sainte-Foy G1K 7P4, Canada

Hughes, J. W. and T. J. Fahey (1994). Litterfall dynamics and ecosystem recovery during forest development. Forest Ecology and Management 63(2-3): 181-198. {a} Field Naturalist Program, Dep. Bot., Univ. Vermont, Burlington, VT 05405, USA

Jacobs, C. A. and N. R. Lersten (1994). Microsporogenesis and endothecial wall patterns in black maple (Acer saccharum subsp. nigrum, Aceraceae). Bulletin of the Torrey Botanical Club 121(2): 180-187. {a} Jacobs and Associates, RR 1, Box 36, Ames, IA 50010, USA

Jacobs, K. A., S. E. Eentz, et al. (1994). Screening three Cercis species for susceptibility to Verticillium dahliae. Plant Disease 78(9): 925. U.S. Natl. Arboretum, 3501 New York Ave. NE, Washington, DC 20002-1958, USA

Kalisz, P. J., J. W. Stringer, et al. (1994). Vertical mulching of trees: Effects on roots and water status. Journal of Arboriculture 20(3): 141-145. Dep. For., Univ. Kentucky, Lexington, KY 40546, USA

Liu, G., B. Cote, et al. (1994). Effects of base cation fertilization on the nutrient status, free amino acids and some carbon fractions of the leaves of sugar maple (Acer saccharum Marsh.). Plant and Soil 160(1): 79-86. Dep. Renewable Resources, Macdonald Campus of McGill Univ., 21, 111 Lakeshore, Ste.-Anne-de-Belleuve, PQ H9X 3V9, Canada

Lukumbuzya, T. K., J. W. Fyles, et al. (1994). Effects of base-cation fertilization on litter decomposition in a sugar maple forest in southern Quebec. Canadian Journal of Forest Research 24(3): 447-452. {a} Dep. Renewable Resources, McGill University, Macdonald Campus, Sainte-Anne-de-Bellevue, PQ H9X 3V9, Canada

Majcen, Z. (1994). History of selection cutting in forests with uneven aged trees in Quebec. Revue Forestiere Francaise Nancy 46(4): 375-384. Serv. Rech. Appl., Minist. Ressources Natl., 2700 rue Einstein, Sainte-Foy, PQ G1P 3W8, Canada

McCarthy, B. C. and R. R. Bailey (1994). Distribution and abundance of coarse woody debris in a managed forest landscape of the central Appalachians. Canadian Journal of Forest Research 24(7): 1317-1329. {a} Dep. Plant Biol., Ohio Univ., Athens, OH 45701-2979, USA

McLaughlin, J. W., D. D. Reed, et al. (1994). Foliar amino acid accumulation as an indicator of ecosystem stress for first-year sugar maple seedlings. Journal of Environmental Quality 23(1): 154-161. {a} Sch. Forestry and Food Prod., 1400 Townsend Drive, Mich. Technol. Univ., Houghton, MI 49931, USA

Miller, F. D. and D. Neely (1994). The long term effect of utility trenching on growth and overall plant health of selected species of shade trees. Arboricultural Journal 18(3): 289-297. {a} Cooperative Ext. Serv., Univ. Ill., Countryside Ext. Cent., 6438 Joliet Rd., Countryside, IL 60525, USA

Mladenoff, D. J., M. A. White, et al. (1994). Applying principles of landscape design and management to integrate old-growth forest enhancement and commodity use. Conservation Biology 8(3): 752-762. Natural Resources Res. Inst., Univ. Minnesota, Duluth, MN 55812, USA

N, S. K. C. N., K. Veeranjaneyulu, et al. (1994). Sites of action of sulphite and bisulphite in the photosynthetic apparatus of sugar maple leaves as studied by photo-acoustic and modulated fluorescence methods. Plant Cell and Environment 17(6): 731-738. {a} Dep. Chem., Univ. Miami, Coral Gables, FL 33124, USA

Nash, B. L., G. R. Stanosz, et al. (1994). Discula campestris infection of sugar maple leaves associated with pear thrips injury. Plant Disease 78(3): 285-289. {a} Natl. Biol. Survey, c/o NPS-AIR, P.O. Box 25287, Denver, CO 80225, USA

Nichols, M. T., R. C. Lemin, Jr., et al. (1994). The impact of two harvesting systems on residual stems in a partially cut stand of northern hardwoods. Canadian Journal of Forest Research 24(2): 350-357. {a} Cooperative Forestry Research Unit, College Natural Resources Forestry and Agriculture, University Maine, Orono, ME 04469-5755, USA

Nystrom, K. L. and P. D. Syme (1994). Pear thrips, Taeniothrips inconsequens (Uzel) (Thysanoptera: Thripidae), on sugar maple in Ontario. Proceedings of the Entomological Society of Ontario 125: 19-28. Natural Res. Canada, Canadian Forest Service, Ontario Region, Great Lakes Forestry Centre, PO Box 490, Sault Ste. Marie, ON P6A 5M7, Canada

Pacala, S. W., C. D. Canham, et al. (1994). Sapling growth as a function of resources in a north temperate forest. Canadian Journal of Forest Research 24(11): 2172-2183. {a} Dep. Ecology Evolutionary Biology, Princeton Univ., Princeton, NJ 08544, USA

Pilon, C. E., B. Cote, et al. (1994). Effect of snow removal on leaf water potential, soil moisture, leaf and soil nutrient status and leaf peroxidase activity of sugar maple. Plant and Soil 162(1): 81-88. Dep. Nat. Resour. Sci., Macdonald Campus of McGill Univ., 21 111 Lakeshore, Ste-Anne-de-Bellevue, PQ H9X 3V9, Canada

Redding, K. D., P. L. Burch, et al. (1994). Growth, biomass, and trim/chip time reduction following application of flurprimidol tree growth regulator. Journal of Arboriculture 20(1): 38-45. {a} DowElanco, 9002 Purdue Rd., Indianapolis, IN 46268, USA

Reed, D. D., K. S. Pregitzer, et al. (1994). Productivity and growth efficiency in sugar maple forests. Forest Ecology and Management 70(1-3): 319-327. {a} Sch. Forestry Wood Products, Michigan Technol. Univ., Houghton, MI 49931, USA

Reid, C. D. and B. R. Strain (1994). Effects of CO-2 enrichment on whole-plant carbon budget of seedlings of Fagus grandifolia and Acer saccharum in low irradiance. Oecologia Berlin 98(1): 31-39. {a} USDA/ARS Dep. Crop Sci., N.C. State Univ., 1509 Varsity Dr., Raleigh, NC 27606, USA

Ribbens, E., J. A. Silander, Jr., et al. (1994). Seedling recruitment in forests: Calibrating models to predict patterns of tree seedling dispersion. Ecology Tempe 75(6): 1794-1806. {a} Ecology Evolutionary Biol., Univ. Conn., Storrs, CT 06269-3042, USA

Ross, D. S., T. R. Wilmot, et al. (1994). Testing sugarbush soils: Effects of sample storage and drying. Communications in Soil Science and Plant Analysis 25(17-18): 2899-2908. {a} Dep. Plant Soil Sci., Univ. Vermont, Burlington, VT 05405, USA

Roth, S. K., R. L. Lindroth, et al. (1994). Effects of foliar phenolics and ascorbic acid on performance of the gypsy moth (Lymantria dispar). Biochemical Systematics and Ecology 22(4): 341-351. {a} Dep. Entomol., 1630 Linden Drive, Univ. Wisconsin, Madison, WI 53706, USA

Ryan, D. A. J., O. B. Allen, et al. (1994). Interpretation of sugar maple (Acer saccharum) ring chronologies from central and southern Ontario using a mixed linear model. Canadian Journal of Forest Research 24(3): 568-575. {a} Dep. Mathematics Statistics, University Guelph, Guelph, ON N1G 2W1, Canada

Scholz, D., G. J. Brooks, et al. (1994). Fruit acid extracts, a fresh approach to skin renewal. International Journal of Cosmetic Science 16(6): 265-272. Brooks Industries Inc., 70 Tyler Place, South Plainfield, NJ 07080, USA

Siccama, T. G., S. P. Hamburg, et al. (1994). Corrections to allometric equations and plant tissue chemistry for Hubbard Brook Experimental Forest. Ecology Tempe 75(1): 246-248. {a} Yale Sch. Forestry Environmental Studies, New Haven, CN 06511, USA

Sipe, T. W. and F. A. Bazzaz (1994). GAP partitioning among maples (Acer) in central New England: Shoot architecture and photosynthesis. Ecology Tempe 75(8): 2318-2332. {a} Dep. Biol., Gustavus Adolphus Coll., 800 College Ave., St. Peter, Minnesota, 56082, USA

Smith, K. T. and D. R. Houston (1994). Metal concentrations in wood of sugar maple infected with sapstreak disease. Canadian Journal of Forest Research 24(1): 185-188. {a} USDA Forest Serv., Northeastern Forest Exp. Stn., Durham, NH 03824-0640, USA

Stanosz, G. R. (1994). Sugar Maple Anthracnose Caused by Discula campestris in Wisconsin. Plant Disease 78(12): 1217. Dep. Plant Pathol., University Wisconsin, Madison, WI 53706, USA

Stanosz, G. R. (1994). Benomyl and acephate applications increase survival of sugar maple seedlings during their first growing season in northern Pennsylvania. Canadian Journal of Forest Research 24(6): 1107-1111. Dep. Plant Pathol., Univ. Wisconsin, 1630 Linden Dr., Madison, WI 53706-1598, USA

Thompson, D. G., D. G. Pitt, et al. (1994). Initial deposits and persistence of forest herbicide residues in sugar maple (Acer saccharum) foliage. Canadian Journal of Forest Research 24(11): 2251-2262. {a} Natural Resources Canada, Canadian Forest Serv., Forest Pest Management Inst., Box 490, 1219 Queen Street East, Sault Ste. Marie, ON P6A 5M7, Canada

Tjoelker, M. G., J. C. Volin, et al. (1994). An open-air system for exposing forest-canopy branches to ozone pollution. Plant Cell and Environment 17(2): 211-218. {a} Univ. Minnesota, Dep. Forest Resources, 115 Green Hall, 1530 N. Cleveland Ave., St. Paul, MN 55108, USA

Toland, D. E. and D. R. Zak (1994). Seasonal patterns of soil respiration in intact and clear-cut northern hardwood forests. Canadian Journal of Forest Research 24(8): 1711-1716. {a} Sch. Natural Resources Environmnet, Univ. Michigan, Ann Arbor, MI 48109-1115, USA

Truax, B., D. Gagnon, et al. (1994). Nitrate reductase activity in relation to growth and soil N forms in red oak and red ash planted in three different environments: Forest, clear-cut and field. Forest Ecology and Management 64(1): 71-82. {a} Groupe Recherche Ecol. Forestiere, Univ. Quebec a Montreal, C.P. 8888, Succ. A, Montreal, PQ H3C 3P8, Canada

Tyree, M. T., S. Yang, et al. (1994). Novel methods of measuring hydraulic conductivity of tree root systems and interpretation using AMAIZED. Plant Physiology Rockville 104(1): 189-199. {a} Northeastern Forest Exp. Stn., Burlington, VT 04502, USA

Veeranjaneyulu, K. and R. M. Leblanc (1994). Action spectra of photosystems I and II in state 1 and state 2 in intact sugar maple leaves. Plant Physiology Rockville 104(4): 1209-1214. {a} Cent. de Recherche en Photobiophysique, Univ. Du Quebec a Trois-Riviers, C.P. 500, Trois-Rivieres, PQ, CAN G9A 5H7, Canada

Vrugtman, F. (1994). International Registration of Cultivar Names for Unassigned Woody Genera 1993. Hortscience 29(9): 970-971. Royal Botanical Gardens, Box 399, Hamilton, ON L8N 3H8, Canada

Welch, J. M. (1994). Street and park trees of Boston: A comparison of urban forest structure. Landscape and Urban Planning 29(2-3): 131-143. West Chester Univ., Dep. Geography Planning, West Chester, PA 19383, USA

Yang, S. and M. T. Tyree (1994). Hydraulic architecture of Acer saccharum and A. rubrum: Comparison of branches to whole trees and the contribution of leaves to hydraulic resistance. Journal of Experimental Botany 45(271): 179-186. {a} Aiken For. Sci. Lab., P.O. Box 968, Burlington, VT 05402, USA

Yin, X., N. W. Foster, et al. (1994). Tree-ring-based growth analysis for a sugar maple stand: Relations to local climate and transient soil properties. Canadian Journal of Forest Research 24(8): 1567-1574. {a} Dep. Forest Resources, Univ. Minnesota, 1530 North Cleveland Ave., St. Paul, MN 55108, USA

Young, A. G. and H. G. Merriam (1994). Effects of forest fragmentation on the spatial genetic structure of Acer saccharum Marsh. (sugar maple) populations. Heredity 72(2): 201-208. {a} CSIRO, Div. Plant Industry, G.P.O. Box 1600, Canberra, ACT 2601, Australia

Anderson, R. C., J. S. Fralish, et al. (1993). The ecology and biology of Panax quinquefolium L. (Araliaceae) in Illinois. American Midland Naturalist 129(2): 357-372. {a} Dep. Biol., Ill. State Univ., Norman, IL 61761, USA

Anderson, R. C. and A. J. Katz (1993). Recovery of browse-sensitive tree species following release from white-tailed deer Odocoileus virginianus Zimmerman browsing pressure. Biological Conservation 63(3): 203-208. Dep. Biological Sciences, Ill. State Univ., Normal, IL 61761, USA

Appenroth, K. J. and R. Bergfeld (1993). Photophysiology of turion germination in Spirodela polyrhiza (L.) Schleiden: XI. Structural changes during red light induced responses. Journal of Plant Physiology 141(5): 583-588. {a} Univ. Jena, Inst. General Botany, Von-Hase-Weg 3, O-6900 Jena, Germany

Ashwath, C., J. V. N. Gowda, et al. (1993). Abnormalities in ovule development of three climbers of Bignoniaceae. Crop Research Hisar 6(1): 179-182. Div. Horticulture, G.K. V.K. Univ. Agricultural Sciences, Bangalore-560 065, India

Bijlsma, R. J. (1993). The characterization of natural vegetation using first-order and texture measurements in digitized, colour-infrared photography. International Journal of Remote Sensing 14(8): 1547-1562. Inst. Forestry and Nature Res. (IBN-DLO), P.O. Box 23, NL-6700 AA Wageningen, Netherlands Antilles

Brzeziecki, B., F. Kienast, et al. (1993). A simulated map of the potential natural forest vegetation of Switzerland. Journal of Vegetation Science 4(4): 499-508. {a} Swiss Federal Inst. Forest, Snow Landscape Research, CH-8903 Birmesdorf, Switzerland

Burton, A. J., K. S. Pregitzer, et al. (1993). Foliar nutrients in sugar maple forests along a regional pollution-climate gradient. Soil Science Society of America Journal 57(6): 1619-1628. {a} Dep. Forestry, Mich. State Univ., East Lansing, MI 48824-1222, USA

Campbell, I. D. and J. H. McAdrews (1993). Forest disequilibrium caused by rapid little ice age cooling. Nature London 366(6453): 336-338. {a} Forestry Can., 5320-122 St., Edmonton, Alberta, CAN T6H 3S5, Canada

Carter, R. (1993). Animal dispersal of the North American sedge, (Cyperus plukenetii (Cyperaceae). American Midland Naturalist 129(2): 352-356. Herbarium, Dep. Biol., Valdosta State Coll., Valdosta, GA 31698, USA

Cooke, M. A., P. Widden, et al. (1993). Development of vesicular-arbuscular mycorrhizae in sugar maple (Acer saccharum) and effects of base-cation ammendment on vesicle and arbuscule formation. Canadian Journal of Botany 71(11): 1421-1426. {a} Biol. Dep., Concordia Univ., 1455 de Maisonneuve West, Montreal, PQ H3G 1M8, Canada

Cunningham, E. M., M. D. Guiry, et al. (1993). Environmental regulation of development, life history and biogeography of Helminthora stackhousei (Rhodophyta) by daylength and temperature. Journal of Experimental Marine Biology and Ecology 171(1): 1-21. {a} Martin Ryan Marine Sci. Inst., Univ. Coll., Galway, Ireland

Darveau, M., G. Gauthier, et al. (1993). Nesting success, nest sites, and parental care of the least flycatcher in declining maple forests. Canadian Journal of Zoology 71(8): 1592-1601. {a} Dep. Biol., Univ. Laval, Sainte-Foy, PQ G1K 7P4, Canada

Dawson, T. E. (1993). Hydraulic lift and water use by plants: Implications for water balance, performance and plant-plant interactions. Oecologia Heidelberg 95(4): 565-574. Sect. Ecol. Systematics, Corson Hall, Cornell Univ., Ithaca, NY 14853, USA

Dirr, M. A. and O. M. Lindstrom, Jr. (1993). Cold hardiness estimates of Acer L. taxa. Journal of Environmental Horticulture 11(4): 203-205. {a} Dep. Horticulture, University Georgia, Athens, GA 30602-7273, USA

Elliott, W. M., N. B. Elliott, et al. (1993). Relative effect of litter and forest type on rate of decomposition. American Midland Naturalist 129(1): 87-95. {a} Dep. Biol., Hartwick Coll., Oneonta, NY 13820

Ellsworth, D. S. and P. B. Reich (1993). Canopy structure and vertical patterns of photosynthesis and related leaf traits in a deciduous forest. Oecologia Heidelberg 96(2): 169-178. {a} Dep. Bot., Univ. Vermont, Burlington, VT 05405-0086, USA

Foster, D. R. and T. M. Zebryk (1993). Long-term vegetation dynamics and disturbance history of a Tsuga dominated forest in New England. Ecology Washington D C 74(4): 982-998. Harvard Forest, Harvard Univ., Petersham, MA 01366, USA

Franklin, S. B., P. A. Robertson, et al. (1993). Overstory vegetation and successional trends of Land Between the Lakes, USA. Journal of Vegetation Science 4(4): 509-520. {a} Dep. Plant Biol., Southern Illinois Univ., Carbondale, IL 62901, USA

Geburek, T. (1993). Are genes randomly distributed over space in mature populations of sugar maple (Acer saccharum Marsh.)? Annals of Botany London 71(3): 217-222. Federal Forestry Res. Inst., Dep. Forest Genet., A-1140 Vienna, Austria

Grenier, G., J. Michaud, et al. (1993). Lipids and fatty acids of leaves from naturally grown sugar maple trees (Acer saccharum Marsh.) showing signs of decline. Plant Physiology and Biochemistry Montrouge 31(2): 143-150. {a} Dep. de Biologie, Faculte de Sciences, Universite de Sherbrooke, Sherbrooke, Quebec J1K 2R1, Canada

Grillas, P., M. P. Garcia, et al. (1993). Submerged macrophyte seed bank in a Mediterranean temporary marsh: Abundance and relationship with established vegetation. Oecologia Heidelberg 94(1): 1-6. {a} Cent. Edudios Avanzados Blanes, Camino Santa Barbara s/n, 17300 Blanes, Girona, Spain

Hall, R. J., S. J. Titus, et al. (1993). Estimation top-kill volumes with large-scale photos on trees defoliated by the jack pine budworm. Canadian Journal of Forest Research 23(7): 1337-1346. {a} Forestry Canada, Northern Forestry Cent., Edmonton, AB T6H 3S5, Canada

Hannah, P. R. (1993). Composition and development of two Appalachian hardwood stands in North Carolina. Journal of the Elisha Mitchell Scientific Society 109(2): 87-98. Univ. Vermont, Sch. Natural Resources, Dep. Forestry, Burlington, VT 05405-0088, USA

Harle, K. J., A. P. Kershaw, et al. (1993). Palaeoecological analysis of an isolated stand Nothofagus cunninghamii (Hook.) Oerst. in eastern Tasmania, Australia. Australian Journal of Ecology 18(2): 161-170. {a} Cent. Palynol. and Palaeoecol., Dep. Geography and Environ. Sci., Monash Univ., Clayton, Vic. 3168, Autralia

Heimler, D., A. Pieroni, et al. (1993). The use of flavonoid glycosides for the identification of elm hybrids. Canadian Journal of Forest Research 23(4): 611-616. {a} Dip. Sci. Suolo e Nutrizione Pianta, Univ. degli Studi Firenze, Piazzale delle Cascine 27, Firenze, Italy

Heisey, R. M. and T. E. Kish (1993). Growth trends of sugar maple on the Allegheny Plateau of north-central Pennsylvania. Journal of the Pennsylvania Academy of Science 67(2): 73-78. {a} Dep. Biol., Pa. State Univ., Schuykill Haven, PA 17972, USA

Hendrick, R. L. and K. S. Pregitzer (1993). The dynamics of fine root length, biomass, and nitrogen content in two northern hardwood ecosystems. Canadian Journal of Forest Research 23(12): 2507-2520. {a} Dep. Forestry, Mich. State Univ., East Lansing, MI 48824, USA

Hendrick, R. L. and K. S. Pregitzer (1993). Patterns of fine root mortality in two sugar maple forests. Nature London 361(6407): 59-61. {a} Dep. Forestry, Mich. State Univ., East Lansing, MI 48824, USA

Jean, M. and A. Bouchard (1993). Riverine wetland vegetation: Importance of small-scale and large-scale environmental variation. Journal of Vegetation Science 4(5): 609-620. {a} Centre Saint-Laurent, Environnement Canada, 105 rue McGill, 4e Etage, Montreal, PQ H2Y 2E7, Canada

Klironomos, J. N., P. Moutoglis, et al. (1993). A comparison of spatial heterogeneity of vesicular-arbuscular mycorrhizal fungi in two maple-forest soils. Canadian Journal of Botany 71(11): 1472-1480. {a} Biol. Dep., Univ. Waterloo, Waterloo, ON N2L 3G1, Canada

Ko, L. J. and P. B. Reich (1993). Oak tree effects on soil and herbaceous vegetation in savannas and pastures in Wisconsin. American Midland Naturalist 130(1): 31-42. {a} U.S. Soil Conservation Serv., Lynden, WA 98264, USA

Kolb, T. E. and L. H. McCormick (1993). Etiology of sugar maple decline in four Pennsylvania stands. Canadian Journal of Forest Research 23(11): 2395-2402. {a} Sch. Forest Resources, Pennsylvania State Univ., University Park, PA 16802, USA

Kubiske, M. E. and M. D. Abrams (1993). Stomatal and nonstomatal limitations of photosynthesis in 19 temperate tree species on contrasting sites during wet and dry years. Plant Cell and Environment 16(9): 1123-1129. {a} Michigan State Univ., Dep. Forestry, East Lansing, MI 48824-1222, USA

Lane, C. J., D. D. Reed, et al. (1993). Width of sugar maple (Acer saccharum) tree rings as affected by climate. Canadian Journal of Forest Research 23(11): 2370-2375. {a} Sch. Forestry and Wood Products, Mich. Technological Univ., Hougton, MI 49931, USA

Lenihan, J. M. (1993). Ecological response surfaces for North American boreal tree species and their use in forest classification. Journal of Vegetation Science 4(5): 667-680. Oregon State Univ., U.S. EPA, Environmental Research Lab., 200 S.W. 35th St., Corvallis, OR 97333, USA

Lindroth, R. L., K. K. Kinney, et al. (1993). Responses of deciduous trees to elevated atmospheric carbon dioxide: Productivity, phytochemistry, and insect performance. Ecology Washington D C 74(3): 763-777. {a} Dep. Entomol., Univ. Wis., Madison, WI 53706, USA

Lindroth, R. L., P. B. Reich, et al. (1993). Light environment alters response to ozone stress in seedlings of Acer saccharum Marsh. and hybrid Populus L.: III. Consequences for performance of gypsy moth. New Phytologist 124(4): 647-651. {a} Dep. Entomol. Environ. Toxicol. Cent., Univ. Wis., Madison, WI 53706-1598, USA

Liu, G. E. and B. Cote (1993). Neutralization and buffering capacity of leaves of sugar maple, largetooth aspen, paper birch and balsam fir. Tree Physiology 12(1): 15-21. Dep. Renewable Resour., MacDonald Campus of McGill Univ., 21111 Lakeshore, Ste-Anne-de Bellevue, PQ H9X 1C0, Canada

MacDonald, N. W., J. A. Witter, et al. (1993). Relationships among atmospheric deposition, throughfall, and soil properties in oak forest ecosystems. Canadian Journal of Forest Research 23(11): 2348-2357. {a} Sch. Natural Resources and Environ., Univ. Mich., Ann Arbor, MI 48109-11115, USA

McClure, J. W. and T. D. Lee (1993). Small-scale disturbance in a northern hardwoods forest: Effects on tree species abundance and distribution. Canadian Journal of Forest Research 23(7): 1347-1360. {a} Dep. Plant Biol., Univ. New Hampshire, Durham, NH 03824, USA

Mladenoff, D. J., M. A. White, et al. (1993). Comparing spatial pattern in unaltered old-growth and disturbed forest landscapes. Ecological Applications 3(2): 294-306. {a} Nat. Resour. Res. Inst., Univ. Minnesota at Duluth, Duluth, MN 55811, USA

Morrison, I. K., N. W. Foster, et al. (1993). Carbon reserves, carbon cycling, and harvesting effects in three mature forest types in Canada. New Zealand Journal of Forestry Science 23(3): 403-412. Natural Res. Canada, Canadian Forest Serv., Ontario Region Saulte Ste. Marie, ON P6A 5M7, Canada

Niklas, K. J. (1993). Testing "economy in design" in plants: Are the petioles and rachises of leaves "designed" according to the principle of uniform strength? Annals of Botany London 71(1): 33-41. Section Plant Biology, Cornell Univ., Ithaca, NY, USA

Pallardy, S. G. and J. L. Rhoads (1993). Morphological adaptations to drought in seedlings of deciduous angiosperms. Canadian Journal of Forest Research 23(9): 1766-1774. {a} Sch. Nat. Resour., Univ. Mo., Columbia, MO 65211, USA

Pare, D., W. L. Meyer, et al. (1993). Nutrient availability and foliar nutrient status of sugar maple sapling following fertilization. Soil Science Society of America Journal 57(4): 1107-1114. {a} Centre Recherche Biologie Forestiere, Fac. Foresterie Geomatique, Pavillon Abitibi-Price, Univ. Laval, Sainte-Foy, PQ G1K 7P4, Canada

Park, C. H., B. Y. Lee, et al. (1993). Life history of Locastra muscosalis (Walker) (Lepidoptera: Pyralidae) and its natural enemies. Korean Journal of Applied Entomology 32(1): 101-104. {a} Chungcheongbuk-do Forest Experiment Station, Cheongju, North Korea

Pitt, D. G., D. G. Thompson, et al. (1993). Response of woody eastern Canadian forest weeds to fall foliar treatments of glyphosate and triclopyr herbicides. Canadian Journal of Forest Research 23(12): 2490-2498. {a} Forestry Canada-Forest Pest Management Inst., Box 490, Sault Ste. Marie, ON P6A 5M7, Canada

Plante, S., C. Gervais, et al. (1993). Chromosome analysis of healthy and die-back specimens of Acer saccharum. Bulletin de la Societe Neuchateloise des Sciences Naturelles 116(2): 47-53. Lab. Cytol. Ressources Phytogenet. MENWIQ, Dep. Sci. Forest., Fac. Forest. Geomatique, Univ. Laval, PQ G1K 7P4, Canada

Pollio, A., G. Pinto, et al. (1993). Effects of the potential allelochemical alpha-asarone on growth, physiology and ultrastructure of two unicellular green algae. Journal of Applied Phycology 5(4): 395-403. {a} Dip. Biologia Vegetale, Via Foria 223, I-80139 Naples, Italy

Potter, D. A. and P. G. Spicer (1993). Seasonal phenology, management, and host preferences of potato leafhopper on nursery-grown maples. Journal of Environmental Horticulture 11(3): 101-106. Dep. Entomol., Univ. Kentucky, Lexington, KY 40546-0091, USA

Roberts, M. R. and H. Dong (1993). Effects of soil organic layer removal on regeneration after clear-cutting a northern hardwood stand in New Brunswick. Canadian Journal of Forest Research 23(10): 2093-2100. {a} Dep. Forest Resources, Fac. Forestry, Univ. New Brunswick, Fredericton, NB E3B 6C2, Canada

Sadusky, M. C., J. M. Skelly, et al. (1993). Hexachloroethane obscurant: Assessing tree foliage injury. Environmental Toxicology and Chemistry 12(4): 685-694. {a} Geo-Centers Inc., Gunpowder Branch, P.O. Box 68, Aberdeen Proving Ground, Maryland 21010-0068

Sauvesty, A., F. Page, et al. (1993). Impact of the pedological environments in bumps and hollows on the content of phenolic compounds and mineral elements in the leaves of sugar maples (Acer saccharum) in decline in Quebec. Canadian Journal of Forest Research 23(2): 190-198. Serv. Sols, Ministere Agric. Pecheries Alimentation Quebec, 2700 rue Einstein, Sainte-Foy, PQ G1P 3W8, Canada

Smitley, D. R., R. P. Rao, et al. (1993). Role of tree trunks, foliage type, and canopy size in host selection by Lymantria dispar (Lepidoptera: Lymantriidae). Environmental Entomology 22(1): 134-140. {a} Dep. Entomol., Michigan State University, East Lansing, MI 48824, USA

Sridhar, K. R. and F. Barlocher (1993). Seasonal changes in microbial colonization of fresh and dried leaves. Archiv fuer Hydrobiologie 128(1): 1-12. {a} Dep. Biosci., Mangalore Univ., Mangalagangotri 574 199, Mangalore, India

Stanosz, G. R. (1993). Symptoms, association, and pathogenicity of Discula campestris, a cause of sugar maple seedling anthracnose. Plant Disease 77(10): 1022-1026. Dep. Plant Pathology, Univ. Wisconsin-Madison, Madison, WI 53706, USA

Stone, E. L. (1993). Soil burrowing and mixing by a crayfish. Soil Science Society of America Journal 57(4): 1096-1099. Soil Sci. Dep., Inst. Food Agric. Sci., Univ. Floirda, Gainesville, FL 32611

Teramoto, E. (1993). Dynamical structure of food chains and energy trophic levels. Japanese Journal of Ecology Sendai 43(1): 21-29. Dep. Applied Mathematics and Informatics, Ryukoku Univ., Otsu 520-21, Japan

Thomas, R. L. and R. C. Anderson (1993). Influence of topography on stand composition in a midwestern ravine forest. American Midland Naturalist 130(1): 1-12. Dep. Biol. Sci., Ill. State Univ., Normal, IL 61761

Tjoelker, M. G., J. C. Volin, et al. (1993). Light environment alters response to ozone stress in seedlings of Acer saccharum Marsh. and hybrid Populus L.: I. In situ net photosynthesis, dark respiration and growth. New Phytologist 124(4): 627-636. {a} Dep. For. Resour., Univ. Minn., 1530 N. Cleveland Ave., St. Paul, MN 55108-1027, USA

Tucker, G. F., J. P. Lassoie, et al. (1993). Crown architecture of stand-grown sugar maple (Acer saccharum Marsh.) in the Adirondack mountains. Tree Physiology 13(3): 297-310. {a} Coastal Oregon Productivity Enhancement Program, Oreg. State Univ., Coll. Foresty, Dep. Forest Sci., Forestry Sci. Lab., 020, Corvallis, OR 97331, USA

Tyree, M. T. and J. D. Alexander (1993