Journal
MARINE POLLUTION BULLETIN
Volume 64, Issue 5, Pages 941-948Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2012.03.004
Keywords
Phytoplankton assemblages; Bohai Bay; Environmental factors; Hydrodynamics conditions; Multivariate analysis techniques
Funding
- Public Science and Technology Research Funds Projects of Ocean in China [201005009, 200805080]
- National Nonprofit Institute [TKS100105, FIO2011T06]
- SOA [2010225, 2010118]
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The phytoplankton assemblages' patterns and their correlation to environmental factors were studied in Bohai Bay during spring and summer. Two zones, the northern (NWA) and southern (SWA) water area, were identified by cluster analysis based on their physical and chemical properties. Principal component analysis (PCA) showed that more phytoplankton species was found in the SWA with low nutrient concentration, while high phytoplankton abundance occurred in the NWA with high nutrient concentration. The seasonal variability in phytoplankton can be explained by water temperature, nutrient, and hydrodynamic conditions (includes mixing during spring and stratification during summer). Results of redundancy analysis (RDA) showed that silicate (SiO4) and soluble reactive phosphorus (SRP) were the most important environmental factors influencing the phytoplankton distribution during spring and summer, respectively. Hydrodynamics condition plays a key role in controlling variation of the environmental factors, which determined phytoplankton distribution in Bohai Bay. (C) 2012 Elsevier Ltd. All rights reserved.
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