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Resultados 171-180 de 368
The effects of ozone-exposed sugar maple seedlings on the biological performance and the feeding preference of the forest tent caterpillar (Malacosoma disstria Hbn.)
1997
Fortin, M. | Mauffette, Y. | Albert, P.J. (Groupe de Recherche en Ecologie Forestiere (GREF), Universite du Quebec a Montreal, C.P. 8888 Succ. A, Montreal, QC H3C 3P8 (Canada))
Spatial and temporal distribution of metals in soils in Warsaw, Poland
1997
Pichtel, J. | Sawyerr, H.T. | Czarnowska, K. (Ball State University, Natural Resources and Environmental Management, Muncie, Indiana 47306-0495 (USA))
Seasonal variation of gas exchange and pigmentation in branches of three grafted clones of mature ponderosa pine exposed to ozone and acid rain
1997
Anderson, P.D. | Houpis, J.L.J. | Helms, J.A. | Momen, B. (USDA Forest Service, Forestry Sciences Laboratory, Rhinelander, Wisconsin (USA))
The influence of air pollutants on needles and stems of Scots pine (Pinus sylvestris L.) trees
1997
Kurczynska, E.U. | Dmuchowski, W. | Wloch, W. | Bytnerowicz, A. (Department of Biophysics and Cell Biology, Silesian University, ul. Jagiellonska 28, 40-034 Katowice (Poland))
Influence of landfill factors on plants and soil fauna - an ecological perspective
1997
Chan, Y.S.G. | Chu, L.M. | Wong, M.H. (Department of Biology, Hong Kong Baptist University, Kowloon Tong (Hong Kong))
Bioaccumulation and physiological effects of excess lead in a roadside pioneer species Sonchus oleraceus L
1997
Xiong ZhiTing (Department of Environmental Science, Wuhan University, Wuhan, Hubei 430072 (China))
Speciation of lead in contaminated soils
1997
Sauve, S. | McBride, M.B. | Hendershot, W.H. (Cornell University, SCAS Department, Bradfield Hall 908, Ithaca, New York, 14853 (USA))
Forest health status in Hungary
1997
Szepesi, A. (State Forest Service, H-1054 Budapest, Szechenyi u. 14 (Hungary))
Ectomycorrhizae of young and mature Scots pine trees in industrial regions in Poland
1997
Kieliszewska-rokicka, B. | Rudawska, M. | Leski, T. (Polish Academy of Sciences, Institute of Dendrology, Parkowa 5, 62-035 Kornik (Poland))
Wildfire in Russian boreal forests - potential impacts of fire regime characteristics on emissions and global carbon balance estimates
1997
Conard, S.G. | Ivanova, G.A. (USDA Forest Service, Vegetation Management and Protection Research, 201 14th Street, SW, Washington, DC 20250 (USA))
