خيارات البحث
النتائج 161 - 170 من 266
Nutient leaching from dormant trees at an elevated site
1989
Schuepp, P.H. (McGill Univ., Ste. Anne-de-Bellevue, Que. (Canada). Macdonald Coll., Dept. of Renewable Resources) | Hendershot, W.H.
Sources of acidity in forest-floor percolate from a maple-birch ecosystem
1989
Hazlett, P.W. (Forestry Canada Ontario Region, Sault Ste. Marie, Ont. (Canada). Great Lakes Forestry Centre) | Foster, N.W.
Changes in foliar elements in red spruce seedlings after exposure to sulfuric and nitric acid mist
1989
Jacobson, J.S. (Boyce Thompson Inst. for Plant Research, Ithaca, NY (USA)) | Lassoie, J.P. | Osmeloski, J. | Yamada, K.
Trace element concentrations in fish from three Adirondack lakes with different pH values
1989
Heit, M. (Environmental Measurement Lab. USDE, New York (USA)) | Schofield, C. | Driscoll, C.T. | Hodgkiss, S.S.
Total sulfur content in the humus layer of urban polluted forest soils
1989
Ohtonen, R. (Oulu Univ. (Finland). Dept. of Botany) | Markkola, A.M. | Torvela, H.
Cadmium soil sorption at low concentrations, 8: Correlation with soil parameters
1989
Christensen, T.H. (Technical Univ. of Denmark, Lyngby (Denmark). Dept. of Environmental Engineering)
A two-year experience on 15N-urea fertilization of a corn field amended with fly ash
1989
Cervelli, S. (Institute of Soil Chemistry, Pisa (Italy)) | Di Giovanni, F. | Perna, A. | Petruzzelli, G.
Heavy-metal ecology of terrestrial plants, microorganisms and invertebrates
1989
Tyler, G. (Lund Univ. (Sweden). Dept. of Plant Ecology) | Balsberg Paahlsson, A.M. | Bengtsson, G. | Baaaath, E. | Tranvik, L.
Toxicity of heavy metals (Zn, Cu, Cd, Pb) to vascular plants
1989
Balsberg Paahlsson, A.M. (Lund Univ. (Sweden). Dept. of Plant Ecology)
Background concentration ranges of heavy metals in Swedish groundwaters from crystalline rocks: a review
1989
Ledin, A. (Linkoeping Univ. (Sweden). Dept. of Water and Environmental Studies) | Pettersson, C. | Allard, B. | Aastrup, M.
