@article {3897, title = {Foliar Response of Red Spruce Saplings to Fertilization with Ca and Mg in the Great Smoky Mountains National Park}, journal = {Canadian Journal of Forest Research}, volume = {23}, year = {1993}, pages = {89-95}, keywords = {Red spruce, Soil acidity, Trees -- Growth}, author = {Van Miegroet, Helga and Johnson, Dale W and Todd, Donald E} } @article {3418, title = {Nutrient Cycling in Red Spruce Forests of the Great Smoky Mountains}, journal = {Canadian Journal of Forest Research}, volume = {21}, year = {1991}, month = {June}, pages = {769-787}, keywords = {Acid rain, Red spruce, Soils, Trees, Woolly adelgids}, author = {Johnson, Dale W and Van Miegroet, Helga and Lindberg, Steven E and Todd, Donald E and Harrison, Robert B} } @proceedings {5362, title = {Nitrogen Dynamics in High-Elevation Spruce Sites in the Great Smoky Mountains National Park}, journal = {First Annual Southern Appalachian Man and the Biosphere Conference}, year = {1990}, month = {November}, pages = {42}, publisher = {Tennessee Valley Authority}, address = {Gatlinburg, TN}, keywords = {Clingmans Dome, Red spruce, Soils, Spruce-Fir forests}, author = {Van Miegroet, Helga and Johnson, Dale W and Todd, Donald E and Goodlaxson, J. D} }