La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	DOC dynamics in a small temperate estuary: Simultaneous addition and removal processes and implications on observed nonconservative behavior
Auteurs :	J. H. McKenna, Auteur
Type de document :	Article
Dans :	Estuaries (27(4) AUG 2004)
Article en page(s) :	604-616
Résumé :	Dissolved organic carbon (DOC) dynamics in the Pawcatuck River estuary, a small temperate estuary in Rhode Island, United States, were examined through the use of field transect and in situ production studies. In late summer, when river discharge was minimal, phytoplankton blooms occurred in the upper reaches of the estuary and released large amounts of autochthonous DOC that accumulated in the middle reaches of the estuary. DOC production rates in August months, calculated both by mixing diagrams and in situ DOC incubations, ranged from 6.67 to 34.7 mumol C l(-1) d(-1) and were positively correlated with DCMU-enhanced fluorescence, an estimate of phytoplankton photosynthetic activity (r(2) = 0.796, p

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