海洋科学2017，Vol.41Issue(2)：44-52,9.DOI:10.11759/hykx20160418003
2015年春季桑沟湾浮游植物群落研究
Study on phytoplankton communities in the Sanggou Bay in spring, 2015
摘要
Abstract
A comprehensive survey including hydrology, biology, and chemistry was carried out in the Sanggou Bay (122.48°E–122.64°E, 37.04°N–37.14°N) during spring, 2015. The species composition, abundance, and dominant species were analyzed by the Uterm?hl method. The results showed a total of 70 taxa belonging to 36 genera of four phyla were identified. Bacillariophyta and Dinophyta were the dominant phytoplankton groups, and they were mostly typical warm neritic species. The other two groups, Cyanophyta and Chrysophyta, were recorded more sporadically. The diatoms were primarily composed of Paralia sulcata and Thalassiosira excentrica, while the dinoflagellates were composed of Protoperidinium bipes. The cell abundance of phytoplankton ranged from 3 to 417.4 × 103 cells/L with an average value of 130.8 × 103 cells/L. Compared with previous studies, the species richness of the phytoplankton decreased. The horizontal distribution of the phytoplankton cell abundance in this area was dependent on diatoms dis-tribution, which was low around the central area and high in the western and eastern points of the studied area. The vertical distribution of phytoplankton cell abundance showed a decreasing trend with an increasing depth in the sub-surface and then reached a maximum in the bottom layer. The Shannon-wiener diversity index and Pielou's evenness index of the phytoplankton community ranged from 0.486 to 2.305 and 0.172 to 0.849, with average values of 1.250 and 0.462, respectively. Because the high value zones of Shannon-wiener diversity index and Pielou's evenness index were in good correspondence with the low phytoplankton cell abundance area, the emergence of preponderant species would reduce the diversity of phytoplankton.关键词
浮游植物/群落结构/优势种/桑沟湾Key words
phytoplankton/community structure/dominant species/Sanggou Bay分类
农业科技引用本文复制引用
钱罡,魏玉秋,孙军..2015年春季桑沟湾浮游植物群落研究[J].海洋科学,2017,41(2):44-52,9.基金项目
国家自然科学基金项目(41676112) （41676112）
国家重点基础研究发展规划项目(2011CB409804) （2011CB409804）
天津市高等学校创新团队培养计划项目(TD12-5003) Project Supported by the National Natural Science Founda-tion of China,No.41676112 （TD12-5003）
the National Basic Research Program of China,No.2011CB409804 （）
Tianjin Higher Education Innovation Team Training Program,No.TD12-5003 （）
