玉环国家级海洋公园夏季潮间带大型底栖生物群落结构研究

通过2017年8月对玉环国家级海洋公园5条潮间带断面的调查分析，鉴定出潮间带大型底栖生物113种，其中软体动物38种，甲壳类和多毛类各25种，大型藻类11种，刺胞动物7种，其他生物7种。优势种为日本笠藤壶、条纹隔贻贝、鳞笠藤壶、俄勒冈外团水虱、火奴鲁玻璃钩虾、克氏旋鳃虫和豆形凯利蛤。平均栖息密度为3772 ind/m2，平均生物量为2853.32 g/m2；各断面Shannon-Wiener（H'）多样性指数、Margalef丰富度指数（d）和Pielou均匀度指数（J）的平均值分别为1.89、1.30和0.48。与邻近其他海岛岩相潮间带大型底栖动物比较，玉环国家海洋公园的潮间带大型底栖动物种类数和生物量均处于较高水平，栖息密度处于中等水平。

Study on the macrobenthic community structure of the intertidal zone in the Yuhuan National Marine Park in summer

In this paper, the results of research on the benthos at rocky bottom in five sections of Yuhuan National Marine Park, in August 2017, have been reported.A total of 113 species including 38 spceies of Mollusca, 25 species of Crustacea, 25 species of Polychaeta, 11 species of Plantae, 7 species of Cnidaria, and 7 other species were identified.The dominant species were Tetraclita japonica, Septifer virgatus, Tetraclita squamosa squamosa, Exosphaeroma oregonensis, Hyale honoluluensis, Spirobranchus kraussii and Kellia porculus.The average abundance and biomass for all the sections were 3772 ind/m2 and 2853.32 g/m2, respectively.Other calculated parameters are showed as follows:Shannon-Wiener(H')=1.89, Margalef index(d)=1.30, Pielou index (J)=0.48.Compared with the macrobenthos in other sea islands which are adjacent to the rocky intertidal zone, the macrobenthos in the Yuhuan National Marine Park had a high level of biodiversity and biomass a moderate habitat density.