期刊
MARINE POLLUTION BULLETIN
卷 62, 期 11, 页码 2317-2329出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2011.08.044
关键词
Organometallic species (Hg and Sn); Hydrodynamics; Primary and bacterial production; Phytoplankton diversity; Tropical estuaries; Mercury; Organotin; Phytoplankton-bacterioplankton coupling
资金
- EC2CO project 'HAIPHONG'
- French IRD
- CNRS
- Groupement De Recherche (GDR) [2476]
- Reseaux Trophiques Pelagiques
- Vietnam Academy of Science and Technology (VAST)
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. (C) 2011 Elsevier Ltd. All rights reserved.
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