Temporal and spatial variations of chlorophyll <em>a</em> and environmental factors in Jiaozhou Bay in 2010-2011

Wang Yujue; Liu Zhe; Zhang Yong; Wang Min; Liu Dongyan

doi:10.3969/j.issn.0253-4193.2015.04.010

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Wang Yujue, Liu Zhe, Zhang Yong, Wang Min, Liu Dongyan. Temporal and spatial variations of chlorophyll a and environmental factors in Jiaozhou Bay in 2010-2011[J]. Haiyang Xuebao, 2015, 37(4): 103-116. doi: 10.3969/j.issn.0253-4193.2015.04.010

Citation:

Wang Yujue, Liu Zhe, Zhang Yong, Wang Min, Liu Dongyan. Temporal and spatial variations of chlorophyll a and environmental factors in Jiaozhou Bay in 2010-2011[J]. Haiyang Xuebao, 2015, 37(4): 103-116. doi: 10.3969/j.issn.0253-4193.2015.04.010

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Temporal and spatial variations of chlorophyll a and environmental factors in Jiaozhou Bay in 2010-2011

doi: 10.3969/j.issn.0253-4193.2015.04.010

1.
Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
2.
College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
3.
College of Marine Life Science, Ocean University of China, Qingdao 266100, China

Received Date: 2014-07-17
Rev Recd Date: 2014-12-24

Abstract

Abstract

Temporal and spatial variations of surface seawater temperature (SST),salinity (SSS),nutrient concentrations and chlorophyll a concentrations were studied in April,June,August and October 2010 and January and March 2011 in Jiaozhou Bay. Spatial distributions showed that dissolved inorganic nitrogen (DIN),phosphate (PO₄) and silicate (SiO₃) concentrations were higher in the northeast edge and decreased gradually towards the inner and the mouth of Jiaozhou Bay during most time of study. DIN and PO₄ were relatively higher in early summer and autumn but lower in winter and late summer as a result of the effects from aquaculture,exogenous nutrients input and phytoplankton consumption. SiO₃ concentrations were mainly affected by phytoplankton consumption and river loadings and were higher in summer and autumn and lower in spring and winter. The analysis on concentrations and structures of nutrients of Jiaozhou Bay during the study period indicated that PO₄ and SiO₃ were both absolute and relative limitations,and SiO₃ limitation was more serious and acted as the important factor which controlled the growth of phytoplankton all over the year. The most serious limitation of SiO₃ and PO₄ occurred in winter and was found in the whole bay. The nutrient loadings as a result of rainfall in summer,however,relieved SiO₃ limitation. The chlorophyll a concentrations were higher in spring and summer and lower in autumn and winter. Temperature,nutrients and the ingestion of filter mussels were the dominant effect factors of the concentrations and distribution of chlorophyll a.
- Jiaozhou Bay,
- chlorophyll a,
- nutrients,
- temproal

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References(50)

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