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The benthic diatom community of Xiangshan Bay 被引量:1

象山港底栖硅藻群落结构特征
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摘要 The samples collected from the surface sediments in Xiangshan Bay,Zhejiang province in May and November 2005 were analyzed under a light microscope.The species composition,abundance,community structure and diversity were investigated.A total of 179 taxa belonging to 46 genera of diatom were identified.The result showed that the ecotypes of diatom were mostly eurytopic species,followed by warm water species and temperate species.The most dominant species were Cyclotella stylorum and Coscinodiscus jonesianus.The seasonal variation of diatom abundance was remarkable.The cell abundance of diatoms was higher in spring(2.974×10^3 cells/g)than that in autumn(0.071×10^3 cells/g).The number of species varies with change of season,demonstrating the adaptability of diatoms to the temperature of water.The species diversity of benthic diatom was lower in autumn than that in spring. 于2005年5月(春季)和11月(秋季)对浙江省象山港海域底栖硅藻进行采样调查,分析底栖硅藻的种类组成、丰度、优势种、多样性及群落结构的季节变化和平面分布特征,并讨论底栖硅藻与水温、盐度等环境因子之间的关系。共鉴定硅藻46属179种,硅藻种类数在春季共有46属164种,秋季减少到22属52种。种类组成以广温种为主,其次是暖水种和温水种。主要优势种有柱状小环藻(Cyclotella stylorum)、琼氏圆筛藻(Coscinodiscus jonesianus)等。细胞丰度范围在(0.007~6.851)×10^3个/g之间,平均值为1.522×10^3个/g。春季硅藻丰度较高,平均值为2.974×10^3个/g,秋季为0.071×10^3个/g。不同站位间硅藻的分布也表现出显著的差异,硅藻细胞丰度最高值位于港顶部鱼排密集区9号站位,春季细胞丰度值6.851×10^3个/g,秋季细胞丰度值0.143×10^3个/g。硅藻丰度较高的有位于鱼排区的3号、4号、5号、7号站位,其余较低。硅藻群落多样性指数和均匀度春季较高,秋季降低。底栖硅藻数量分布随季节变化明显,与盐度关系不大。
作者 WU Rui GAO Yahui LAN Dongzhao LAN Binbin FANG Qi 吴瑞;高亚辉;蓝东兆;兰彬斌;方琦(厦门大学生命科学学院,福建厦门361005;海南省海洋与渔业科学院,海南海口570125;国家海洋局第三海洋研究所,福建厦门361005)
出处 《Marine Science Bulletin》 CAS 2020年第1期43-53,共11页 海洋通报(英文版)
基金 funded by the National Key Research and Development Program of China(Grant No.2016YFA0601302) the Natural Science Foundation of China(Grant No.41876146,No.41476116) the China-EU Cooperation Project:Ecological farming research in coastal zone composite system(INCO-CT-2004-510706).
关键词 Xiangshan Bay AQUICULTURE benthic diatom community characteristic 象山港 养殖 底栖硅藻 群落结构
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