خيارات البحث
النتائج 1 - 10 من 11
Interrelationships between mercury levels in yearling yellow perch, fish condition and water quality
1990
Suns, K. (Ontario Ministry of the Environment, Rexdale, Ont. (Canada). Water Resources Branch, Aquatic Biology Section) | Hitchin, G.
Changes in the fish community of a limed lake near Sudbury, Ontario: effects of chemical neutralization or reduced atmospheric deposition of acids?
1988
Gunn, J.M. | McMurtry, M.J. | Casselman, J.M. | Keller, W. | Powell, M.J.
An overview of lake neutralization experiments in Ontario
1988
Dodge, D.P. | Booth, G.M. | Richman, L.A. | Keller, W. | Tomassini, F.D.
Chemical effects of spring and summer alum additions to a small, northwestern Ontario lake
1987
Playle, R.C. (Freshwater Inst., Winnipeg (Canada). Dept. of Fisheries and Oceans)
Spatial and temporal pattern of sulfate and nitrate wet deposition in Ontario
1986
Tang, A.J.S. (Ontario Ministry of the Environment, Toronto (Canada). Air Resources Branch) | Chan, W.H. | Chung, D.H.S. | Lusis, M.A.
Trace elements distribution within the tree phytomass and forest floor of a tolerant hardwood stand, Algoma, Ontario
1986
Morrison, I.K. (Canadian Forestry Service, Sault Ste Marie, Ont. (Canada)) | Hogan, G.D.
Heavy metals in fish from a series of metal-contaminated lakes near Sudbury, Ontario
1985
Bradley, R.W. (Guelph Univ., Ontario (Canada). Dept. of Zoology) | Morris, J.R.
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.
Leaching and distribution of nitrogen and nickel in nickel-perturbed jack pine forest microcosms
1985
deCatanzaro, J.B. (Toronto Univ., Toronto, Ont. (Canada). Dept. of Botany) | Hutchinson, T.C.
Influence of acid deposition on element cycling in mature sugar maple forest, Algoma, Canada
1992
Morrison, I.K. (Forestry Canada Ontario Region, Sault Ste. Marie, Ont. (Canada)) | Foster, N.W. | Nicolson, J.A.
