细化搜索
结果 1-6 的 6
Accumulation of aluminum and iron by bryophytes in streams affected by acid-mine drainage.
1996
Engleman C.J. Jr. | McDiffett W.F.
Vertical gradients of ozone and carbon dioxide within a deciduous forest in central Pennsylvania
1996
Skelly, J.M. | Fredericksen, T.S. | Savage, J.E. | Snyder, K.R. (Department of Plant Pathology, Pennsylvania State University, 108 Buckhout Laboratory, University Park, PA 16802 (USA))
Size-mediated foliar response to ozone in black cherry trees
1996
Fredericksen, T.S. | Skelly, J.M. | Steiner, K.C. | Kolb, T.E. | Kouterick, K.B. (Environmental Resources Research Institute, 220 Forest Resources Laboratory, Pennsylvania State University, University Park, Pennsylvania 16802 (USA))
Physiology, morphology, and ozone uptake of leaves of black cherry seedlings, saplings, and canopy trees
1995
Fredericksen, T.S. | Joyce, B.J. | Skelly, J.M. | Steiner, K.C. | Kolb, T.E. | Kouterick, K.B. | Savage, J.E. | Snyder, K.R. (Environmental Resources Research Institute, 220 Forest Resource Laboratory, Pennsylvania State University, University Park, Pennsylvania 16802 (USA))
Long-term changes in forest soil acidity in Pennsylvania, U.S.A.
1997
Drohan, J.R. (Pennsylvania State Univ., University Park, PA (USA).) | Sharpe, W.E.
Biology and chemistry of three Pennsylvania lakes: responses to acid precipitation
1986
Bradt, P.T. (Centre for Marine and Environmental Studies, Bethlehem, PA (USA)) | Dudley, J.L. | Berg, M.B. | Barrasso, D.S.
