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Pesticides in rainfall and air in Italy.
1993
Trevisan M. | Montepiani C. | Ragozza L. | Bartoletti C. | Ioannilli E. | Re A.A.M. del
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))
Direct damage to vegetation caused by acid rain and polluted cloud: definition of critical levels for forest trees
1993
Cape, J.N. (Institute of Terrestrial Ecology, Bush Estate, Penicuik, Midlothian, EH26 0QB (United Kingdom))
Detecting ozone and demonstrating its phytotoxicity in forested areas of Poland: a pilot study
1993
Bytnerowicz, A. | Manning, W.J. | Grosjean, D. | Chmielewski, W. | Dmuchowski, W. | Grodzinska, K. | Godzik, B. (Pacific Southwest Research Station, USDA Forest Service, 4955 Canyon Crest Dr., Riverside, CA 92507 (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))
Direct and Indirect effects and the Long-term Risks of Air Pollution on Forest Ecosystems:
1993
Skelly, J.M. (Pennsylvania State University, University Park (USA))
Tropospheric ozone is the most important single air pollutant of importance to forests in eastern United States. Both broadleaf and needled trees may suffer premature foliar senescence following even low ozone exposure years. Genetic sensitivity within species is likewise prevalent.
Mostrar más [+] Menos [-]Indirect effects and the Long-term Risks of Air Pollution on Eastern North American Temperate Forest Ecosystems: Insect Outbreaks
1993
Chappelka, A.H. (Auburn University, Alabama (USA). School of Forestry)
Air pollutants cause subtle changes in natural resistance that can prediscope plants to insect attack. The majority of reports in the area of plant-pollutant-insect interactions have been correlative in nature. In the last ten years, there has emerged a growing body of literature, the vast majority with herbaceous crops, reporting on cause-effect relationships among insects and their hosts.
Mostrar más [+] Menos [-]Indirect effects and the Long-term Risks of Air Pollution on Eastern North American Forest Ecosystems: Pathological Problems
1993
Chappelka, A.H. (Auburn University, Alabama (USA). School of Forestry)
Air pollutants such as ozone may affect tree host-pathogen interactions by altering plant tissue susceptibility, plant resistance, pathogen virulence and inoculum density. Ozone has been shown to weaken trees in natural stands and increase their susceptibility to invasion by plant pathogens, such as Heterobasidion annosum. Ozone has also been shown to enhance disease development by fungi that are normally saprophytic in nature.
Mostrar más [+] Menos [-]Effects of Acidic Deposition on Calcium Nutrition of Spruce/fir Forests in the Eastern U.S.: Implications for Physiological Processes, Growth, and Climate Interactions
1993
McLaughlin, S.B. (Oak Ridge National Laboratory, Oak Ridge, TN (USA))
Calcium avaiability to forests has been shown to be reduced by acidic deposition in several ways including: increased leaching from foliage, increased leaching from soils, and decreased availability from poorly buffered soils when aluminium is mobilized. Studies documented that acidic deposition has altered the growth and vigour of red spruce during the past three decades by changing calcium availability.
Mostrar más [+] Menos [-]Potential Impacts of Climate Change on Forests in China
1993
Deying Xu (Chinese Academy of Forestry, Beijing (China))
Experimental research on the physiology of tree seedlings under simulated climate and doubled carbon dioxide can rarely be extrapolated to grown forests. Climatological research has demonstrated a warming trend in the north and a cooling trend in the south of China. However, the changing climate has not caused the death of forests. Projecting the impact of climate change on forest distribution and growth using current GCMs seems to be the only method available.
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