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Результаты 181-190 из 333
Making the link between science and policy: controlling N losses from agriculture in Canada
1998
Kimpe, C.R. de | MacDonald, K.B. (Agriculture and Agri-Food Canada, Sir John Carling Building, Ottawa, Ontario, K1A 0C5 (Canada))
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))
Changes in tree ring chemistry in sugar maple (Acer saccharum) along an urban-rural gradient in southern Ontario
1998
Watmough, S.A. | Hutchinson, T.C. | Sager, E.P.S. (Environmental Resource Studies Program, Trent University, Peterborough, Ontario, K9J 7B8 (Canada))
Polychlorinated biphenyls in a rural watershed in the southern prairie region of Canada
1998
Rawn, D.F.K. | Halldorson, T.H.J. | Lawson, B.D. | Muir, D.C.G. (Department of Soil Science, University of Manitoba, Winnipeg, Manitoba, R3T 2N2 (Canada))
Identifying factors which modify the effects of ambient ozone on white clover (Trifolium repens) in Europe
1998
Ball, G.R. | Benton, J. | Palmer-Brown, D. | Fuhrer, J. | Skarby, L. | Gimeno, B.S. | Mills, G. (Department of Computing, The Nottingham Trent University, Burton Street, Nottingham, NG1 4BU (United Kingdom))
Effects of nitrogen deposition on field layer vegetation in south Swedish oak forests
1998
Brunet, J. | Diekmann, M. | Falkengren-Grerup, U. (Department of Conservation Biology, Swedish University of Agricultural Sciences, Box 7002, S-750 07 Uppsala (Sweden))
Atmospheric deposition of nitrogen compounds in the Czech Republic
1998
Zapletal, M. (Environmental Monitoring Centre - Ekotoxa Opava, Homi nam. 2, 746 01 Opava (Czech Republic))
A comparison of biochemical responses to oxidative and metal stress in seedlings of barley, Hordeum vulgare L
1998
Jita Patra | Panda, B.B. (Genetic Toxicology Laboratory, Department of Botany, Berhampur University, Berhampur-760 007, Orissa (India))
Alternative strategies for reducing nitrogen loading
1998
Jensen, J.J. | Skop, E. (National Environmental Research Institute, Department of Policy Analysis, P.O. Box 358, DK-4000, Roskilde (Denmark))
Nitrogen response of herbs and graminoids in experiments with simulated acid soil solution
1998
Falkengren-Grerup, U. (Department of Plant Ecology, Lund University, Ecology Building, S-223 62 Lund (Sweden))
