@article {PIE394,
	title = {Drivers of spatial and temporal variability in estuarine food webs},
	journal = {Marine Ecological Progress Series},
	volume = {533},
	year = {2015},
	note = {PI Plum Data},
	pages = {67-77},
	keywords = {estuarine, food webs, long-term, LTER-PIE, organic matter, population dynamics, primary production, stable isotopes},
	doi = {10.3354/meps11389},
	author = {Nelson, J.A. and Deegan,L. and Garritt, R.H.}
}
@article {,
	title = {A simple and precise method for measuring ammonium in marine and freshwater ecosystems},
	journal = {Canadian Journal of Fisheries and  Aquatic Science},
	volume = {56},
	year = {1999},
	note = {PD Plum Data},
	pages = {1801-1808},
	keywords = {ammonium, estuarine, freshwater, LTER-PIE, marine},
	doi = {10.1139/f99-128},
	author = {Holmes, R. M. and Aminot, A. and Kerouel, R. and Hooker, B.A. and Peterson, B.J.}
}
@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.}
}
