@article {PIE120, title = {Isotopic investigation of nitrogen retention in a riparian ecosystem.}, journal = {Journal of Applied Ecology}, volume = {40}, number = {6}, year = {2004}, note = {PI Plum Data}, pages = {1035-1048}, keywords = {isotopes, LTER-PIE, nitrogen, riparian}, doi = {10.1111/j.1365-2664.2003.00854.x}, author = {Clement, J. and Holmes, R.M. and Peterson, B.J. and Pinlay, G.} } @article {PIE38, title = {Nitrogen flow through the food web in the oligohaline zone of a New England estuary.}, journal = {Ecology}, volume = {81}, year = {2000}, note = {PD Plum Data}, pages = {433-452}, keywords = {15N-tracer, Actinocyclus normanii, benthivore, copepod, detritus, diatoms, disturbance, food web, inorganic nutrients, intertidal, LTER-PIE, macrofauna, nitrogen, oligohaline zone, planktivore, population dynamics, primary production}, doi = {10.2307/177438}, author = {Hughes, J. E. and Deegan, L.A. and Peterson, B.J. and Holmes, R.M. and Fry, B.} } @article {PIE3, title = {Measuring 15N-NH4 in marine, estuarine, and freshwaters: an adaptation of the ammonium diffusion method for samples with low ammonium concentrations.}, journal = {Marine Chemistry}, volume = {60}, year = {1998}, note = {PI Coastal}, pages = {235-243}, keywords = {ammonium, analytical methods, diffusion, estuarine, fresh water, inorganic nutrients, N-15, PIE LMER, sea water}, doi = {10.1016/S0304-4203(97)00099-6}, author = {Holmes, R.M. and McClelland, J. and Sigman, D.M. and Fry, B. and Peterson, B.J.} }