@article {11471, title = {Foliar Retention of N-15 Tracers: Implications for Net Canopy Exchange in Low- and High-elevation Forest Ecosystems}, journal = {Forest Ecology and Management}, volume = {103}, year = {1998}, month = {April}, pages = {211-216}, keywords = {Ecology, Forests, Red spruce, Soils}, doi = {10.1016/S0378-1127(97)00185-0}, author = {Garten, Charles T and Schwab, A. B and Shirshac, T. L} }