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Int. J. Environ. Res. Public Health 2011, 8(7), 2951-2966; doi:10.3390/ijerph8072951

Seasonal Variation of Water Quality and Phytoplankton Response Patterns in Daya Bay, China

1
State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
2
Marine Biology Research Station at Daya Bay, Chinese Academy of Sciences, Shenzhen 518121, China
*
Author to whom correspondence should be addressed.
Received: 23 May 2011 / Revised: 28 June 2011 / Accepted: 29 June 2011 / Published: 15 July 2011
(This article belongs to the Special Issue Geostatistics in Environmental Pollution and Risk Assessment)
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Abstract

Data collected from 12 stations in Daya Bay in different seasons in 2002 revealed the relation between water quality and phytoplankton response patterns. The results showed that Daya Bay could be divided into wet and dry seasons by multivariate statistical analysis. Principal component analysis indicated that temperature, chlorophyll a and nutrients were important components during the wet season (summer and autumn). The salinity and dissolved oxygen were the main environmental factors in the dry season (winter and spring). According to non-metric multidimensional scaling, there was a shift from the large diatoms in the dry season to the smaller line-chain taxa in the wet season with the condition of a high dissolved inorganic nitrogen and nitrogen to phosphorous concentration ratio. Nutrient changes can thus alter the phytoplankton community composition and biomass, especially near the aquaculture farm areas. There was no evidence of an effect of thermal water from the nearby nuclear power plants on the observed changes in phytoplankton community and biomass in 2002.
Keywords: South China Sea; Daya Bay (DYB); water quality; phytoplankton; multivariate analysis; human activities South China Sea; Daya Bay (DYB); water quality; phytoplankton; multivariate analysis; human activities
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Sun, C.-C.; Wang, Y.-S.; Wu, M.-L.; Dong, J.-D.; Wang, Y.-T.; Sun, F.-L.; Zhang, Y.-Y. Seasonal Variation of Water Quality and Phytoplankton Response Patterns in Daya Bay, China. Int. J. Environ. Res. Public Health 2011, 8, 2951-2966.

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