%0 Generic %D 2009 %T Shifts in lake N:P stoichiometry and nutrient limitation driven by atmospheric nitrogen deposition %A Elser, J.J. %A Anderson, T. %A Baron, J.S. %A Bergstorm, A.K. %A Jansson, M. %A Kyle, M. %A Nydick, K.R. %A Steger, L. %A Hesson, D.O. %B Science %V 5954 %P 835-837 %0 Generic %D 1990 %T Phosphorus and nitrogen limitation of phytoplankton growth in the freshwaters of North America: a review and critique of experimental enrichments %A Elser, J.J. %A Marzolf, E.R. %A Goldman, C.R. %B Canadian Journal of Fisheries and Aquatic Sciences %V 47 %P 1468-1477