Affiner votre recherche
Résultats 1-10 de 15
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))
Risk of damage to crops in the direct neighbourhood of ammonia sources
1998
Eerden, L.J.M. van der | Visser, P.H.B. de | Dijk, C.J. van (Research Institute for Agrobiology and Soil Fertility, Research unit Plant and Biosphere, P.O. Box 14, 6700 AA Wageningen (Netherlands))
Decomposer communities in contaminated soil: is altered community regulation a proper tool in ecological risk assessment of toxicants?
1997
Salminen, J.E. | Sulkava, P.O. (University of Jyvaskyla, Department of Biological and Environmental Science, P.O. Box 35, FIN-40351 Jyvaskyla (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))
Turnover of carbon and nitrogen in coniferous forest soils of different N-status and under different 15NH4-N application rate
1998
Sjoberg, R.M. | Persson, T. (Department of Ecology and Environmental Research, Swedish University of Agricultural Sciences, P.O. Box 7072, S-750 07 Uppsala (Sweden))
Nitrification in organic and mineral soil layers in coniferous forests in response to acidity
1998
Rudebeck, A. | Persson, T. (Department of Ecology and Environmental Research, Swedish University of Agricultural Sciences, P.O. Box 7072, S-750 07 Uppsala (Sweden))
Nitrogen pollution on the local scale in Lithuania: vitality of forest ecosystems
1998
Armolaitis, K. (Department of Forest Soils, Typology and Hydrology, Lithuanian Forest Research Institute, LT-4312, Kaunas-Girionys (Lithuania))
Nitrate reductase activity as an indicator of ponderosa pine response to atmospheric nitrogen deposition in the San Bernardino mountains
1996
Krywult, M. | Karolak, A. | Bytnerowicz, A. (W. Szafer Institute of Botany, Polish Academy of Sciences, ul. Lubicz 46, 31-512, Cracow (Poland))
The effects of simultaneous large acidic and alkaline airborne pollutants on forest soil
1996
Haapala, H. | Goltsova, N. | Pitulko, V. | Lodenius, M. (Department of Limnology and Environmental Protection, PO Box 27, FIN-00014, University of Helsinki (Finland))
Responses of indicator bacteria to forest soil amended with municipal sewage sludge from aerated and non-aerated ponds
1996
Vasseur, L. | Cloutier, C. | Labelle, A. | Duff, J.N. | Beaulie, C. | Ansseau, C. (Department of Biology, Faculty of Sciences, Universite de Sherbrooke, Quebec J1K 2R1 (Canada))
