Community characteristics of net-phytoplankton in spring in Sanmen Bay, China

doi:10.3969/j.issn.1001-909X.2015.01.011

Abstract

Abstract: Based on the survey in Sanmen Bay in May 2013, a preliminary research on the net-phytoplankton community characteristics was carried out. The results show that a total of 9 phyla' 253 species are found in the survey area, and the community is mainly composed of Bacillariophyta (71.5%), followed by Dinophyta (16.6%), and other phyla occupies low ratio. The average value of cell abundance is (2 227±3 883)×10³个/m³, and the highest value appeares in the northeastern area near the mouth of the bay (EMB). The dominant species are Eucampia zodiacus, Biddulphia sinensis, Chaetoceros castracanei, Coscinodiscus concinnus, Skeletonema costatum, Coscinodiscus jonesianus and Nitzschia sigma. Because the effect of water temperature, salinity or other environmental factors, the dominants distribution demonstrates spatial difference among the mouth, the middle and the top of the bay. Besides, comparing with the historical data, it is found that the phytoplankton cell abundance increases and the diatom species declines in percentage of the total species.

Key words: Sanmen Bay, phytoplankton, dominant species, long-term changes

CLC Number:

Q178.53

LIU Jing-jing, JIANG Zhi-bing, ZENG Jiang-ning, CHEN Yue, HUANG Wei, PENG Ling, LUO Xin. Community characteristics of net-phytoplankton in spring in Sanmen Bay, China[J]. Journal of Marine Sciences, 2015, 33(1): 74-80.

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