Phytoplankton distribution and productivity in a highly turbid, tropical coastal system (Bach Dang Estuary, Vietnam)

Abstract : Phytoplankton diversity, primary and bacterial production, nutrients and metallic contaminants were measured during the wet season (July) and dry season (March) in the Bach Dang Estuary, a sub-estuary of the Red River system, Northern Vietnam. Using canonical correspondence analysis we show that phytoplankton community structure is potentially influenced by both organometallic species (Hg and Sn) and inorganic metal (Hg) concentrations. During March, dissolved methylmercury and inorganic mercury were important factors for determining phytoplankton community composition at most of the stations. In contrast, during July, low salinity phytoplankton community composition was associated with particulate methylmercury concentrations, whereas phytoplankton community composition in the higher salinity stations was more related to dissolved inorganic mercury and dissolved mono and tributyltin concentrations. These results highlight the importance of taking into account factors other than light and nutrients, such as eco-toxic heavy metals, in understanding phytoplankton diversity and activity in estuarine ecosystems.
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Marine Pollution Bulletin, Elsevier, 2011, 62 (11), pp.2317-2329. 〈10.1016/j.marpolbul.2011.08.044〉
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https://hal-bioemco.ccsd.cnrs.fr/bioemco-00635299
Contributeur : Emma Rochelle-Newall <>
Soumis le : mardi 25 octobre 2011 - 07:38:35
Dernière modification le : lundi 15 janvier 2018 - 10:51:09

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E.J. Rochelle-Newall, V.T. Chu, O. Pringault, D. Amouroux, R. Arfi, et al.. Phytoplankton distribution and productivity in a highly turbid, tropical coastal system (Bach Dang Estuary, Vietnam). Marine Pollution Bulletin, Elsevier, 2011, 62 (11), pp.2317-2329. 〈10.1016/j.marpolbul.2011.08.044〉. 〈bioemco-00635299〉

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