@article {PIE34,
	title = {Nitrogen biogeochemistry in the oligohaline zone of a New England estuary.},
	journal = {Ecology},
	volume = {81},
	number = {2},
	year = {2000},
	note = {PD Plum Data},
	pages = {416-432},
	keywords = {15N, Actinocyclus normanii, diatoms, estuary, inorganic nutrients, land-margin ecosystem, LTER-PIE, nitrogen cycling, oligohaline zone, organic matter, phytoplankton, primary production, silica, stable isotopes, terrestrial-aquatic linkage},
	doi = {10.2307/177437},
	author = {Holmes, R. M. and Peterson, B.J. and Deegan, L. and Hughes, J. and Fry, B.}
}
@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.}
}
