خيارات البحث
النتائج 1 - 10 من 38
The rate of PAHs accumulation in the pine needles (Pinus sylvestris L.) from selected regions with different types of PAHs emission
2002
Malawska, M. (Warsaw University, Warsaw (Poland). Faculty of Biology) | Staszewski, T. | Wilkomirski, B.
The investigation was carried out in three areas characterised by different levels and types of PAHs emission. The difference in total amount of PAHs in pine needles from investigated areas was accompanied by a significant changes in mutual ratio of PAHs with different number of rings
اظهر المزيد [+] اقل [-]Atmospheric nitrogen deposition at a conifer forest: response of free amino acids in Engelmann spruce needles
1999
Calanni, J. | Berg, E. | Wood, M. | Mangis, D. | Boyce, R. | Weathers, W. | Sievering, H. (Global Change and Environmental Quality Program, Department of Environmental Sciences, Center for Environmental Sciences, Campus Box 172, University of Colorado at Denver, PO Box 173364, Denver, CO 80217-3364 (USA))
Comparison of photosynthetic responses to manganese toxicity of deciduous broad-leaved trees in northern Japan
1997
Kitao, M. | Lei, T.T. | Koike, T. (Forestry and Forest Products Research Institute, Hokkaido Research Center, Sapporo 062 (Japan))
Anthropogenic impacts on natural nitrogen isotope variations in Pinus sylvestris stands in an industrially polluted area
1997
Jung, K. | Gebauer, G. | Gehre, M. | Hofmann, D. | Weissflog, L. | Schuurmann, G. (Department of Chemical Ecotoxicology, Centre for Environmental Research Leipzig-Halle, P.O. Box 2, D-04301 Leipzig (Germany))
Variation in ozone sensitivity among clones of Betula pendula and Betula pubescens
1997
Paakkonen, E. | Holopainen, T. | Karenlampi, L. (Department of Ecology and Environmental Science, University of Kuopio, PO Box 1627, 70211, Kuopio (Finland))
Differences in growth, leaf senescence and injury, and stomatal density in birch (Betula pendula Roth.) in relation to ambient levels of ozone in Finland
1997
Paakkonen, E. | Holopainen, T. | Karenlampi, L. (Department of Ecology and Environmental Science, University of Kuopio, PO Box 1627 (Finland))
Antioxidant responses to simulated acid rain and heavy metal deposition in birch seedlings
1997
Koricheva, J. | Roy, S. | Vranjic, J.A. | Haukioja, E. | Hughes, P.R. | Hanninen, O. (Laboratory of Ecological Zoology, Department of Biology, University of Turku, FIN-20014 Turku (Finland))
Nitrogen deposition in California forests: a review
1996
Bytnerowicz, A. | Fenn, M.E. (Pacific Southwest Research Station, USDA-Forest Service, Forest Fire Laboratory, 4955 Canyon Crest Drive, Riverside, CA 92507 (USA))
Effects of simulated acid rain and ozone on foliar chemistry of field-grown Pinus ponderosa seedlings and mature trees
1996
Momen, B. | Helms, J.A. (Department of Environmental Science, University of California, Berkeley, California 94720 (USA))
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))
