%0 Journal Article %J Canadian Journal of Fisheries and Aquatic Science %D 1999 %T A simple and precise method for measuring ammonium in marine and freshwater ecosystems %A Holmes, R. M. %A Aminot, A. %A Kerouel, R. %A Hooker, B.A. %A Peterson, B.J. %K ammonium %K estuarine %K freshwater %K LTER-PIE %K marine %B Canadian Journal of Fisheries and Aquatic Science %V 56 %P 1801-1808 %G eng %M PIE15 %] NSF-LTER-PIE %R 10.1139/f99-128 %F Journal Article