خيارات البحث
النتائج 1 - 10 من 21
Forest decline and soil nutritional problems in Pacific areas.
1990
Mueller Dombois D.
Densities of endophytic fungi and performance of leafminers (Lepidoptera: Eriocraniidae) on birch along a pollution gradient
1999
Lappalainen, J.H. | Koricheva, J. | Helander, M.L. | Haukioja, E. (Section of Ecology, Department of Biology, University of Turku, FIN-20014 Turku (Finland))
Accumulation of Cu and Ni in successive stages of Lymantria dispar L. (Lymantriidae, Lepidoptera) near ore smelters at Sudbury, Ontario, Canada
1996
Bagatto, G. | Shorthouse, J.D. (Department of Biology, Laurentian University, Sudbury, Ontario P3E 2C6 (Canada))
Variations in chemical composition of birch foliage under air pollution stress and their consequences for Eriocrania miners
1995
Koricheva, J. | Haukioja, E. (Laboratory of Ecological Zoology, Department of Biology, University of Turku, FIN-20500 Turku (Finland))
The effects of simulated acid rain on growth and susceptibility to predation of Phratora polaris (Col., Chrysomelidae)
1995
Palokangas, P. | Neuvonen, S. | Haapala, S. (Kevo Subarctic Research Institute, University of Turku, A777 Kevo, FIN-99800 Ivalo (Finland))
Conifer aphids in an air-polluted environment. II. Host plant quality
1993
Kainulainen, P. | Satka, H. | Mustaniemi, A. | Holopainen, J.K. | Oksanen, J. (Department of Environmental Sciences, University of Kuopio, PO Box 1627, SF-70211 Kuopio (Finland))
Visible injury responses
1990
Arndt, U. | Billen, N. | Seufert, G. | Ludwig, W. | Borkhart, K. | Ohnesorge, B. (Institut fur Landeskultur und Pflanzenokologie, Universitat Hohenheim, W-7000 Stuttgart 70 Hohenheim (Germany))
Nitrogen deposition in Swiss forests and its possible relevance for leaf nutrient status, parasite attacks and soil acidification
1998
Fluckiger, W. | Braun, S. (Institute for Applied Plant Biology, CH-4124 Schonenbuch (Switzerland))
Evaluation of ozone injury on foliage of black berry (Prunus serotina) and tall milkweed (Asclepias exaltata) in Great Smoky Mountains National Park
1997
Chappelka, A. | Renfro, J. | Somers, G. | Nash, B. (School of Forestry, Auburn University, Auburn, AL 36849 (USA))
Conifer aphids in an air-polluted environment. I. Aphid density, growth and accumulation of sulphur and nitrogen by Scots pine and Norway spruce seedlings
1993
Holopainen, J.K. | Mustaniemi, A. | Kainulainen, P. | Satka, H. | Oksanen, J. (Department of Environmental Sciences, University of Kuopio, PO Box 1627, SF-70211 Kuopio (Finland))
