欢迎访问《生态学杂志》官方网站,今天是 分享到:

生态学杂志

• 研究报告 • 上一篇    下一篇

洞头无居民海岛岩相潮间带夏季大型底栖动物群落格局

彭茂潇1,钱培力1,张永普2**,王铁杆3,周化斌2   

  1. 1温州大学瓯江学院, 浙江温州 325035; 2温州大学生命与环境科学学院, 浙江温州 325035; 3浙江省海洋水产养殖研究所, 浙江温州 325005)
  • 出版日期:2013-09-10 发布日期:2013-09-10

Community structure of macrozoobenthos in rocky intertidal zone of uninhabited islands in Dongtou County, Zhejiang Province of East China  in summer.

PENG Mao-xiao1, QIAN Pei-li1, ZHANG Yong-pu2**, WANG Tie-gan3, ZHOU Hua-bin2   

  1. (1 Oujiang College, Wenzhou University, Wenzhou 325035, Zhejiang, China; 2 College of Life and Environmental Sciences, Wenzhou University, Wenzhou 325035, Zhejiang, China; 3 Zhejiang Mariculture Research Institute, Wenzhou 325005, Zhejiang, China)
  • Online:2013-09-10 Published:2013-09-10

摘要: 2011年7—8月,对洞头县无居民海岛进行潮间带大型底栖动物群落结构进行调查,在大竹屿岛、虎洞岛、北爿山屿、乱头屿、内圆屿、小瞿岛和中瞿岛等7个岛屿各设1条采样断面,共采集到大型底栖动物102种,其中软体动物58种(多板类5种、腹足类33种和双壳类20种),甲壳类22种,多毛类7种和其他动物15种。大型底栖动物平均密度和生物量分别为(864±126)ind·m-2和(1814.85±347.03)g·m-2。单因素方差分析表明:各岛屿的平均密度和生物量差异显著;双壳类、多毛类和其他动物的密度无显著差异,多板类、腹足类和甲壳类的密度差异显著;腹足类、双壳类和多毛类的生物量无显著差异,多板类、甲壳类和其他动物的生物量差异显著;中潮区的大型底栖动物平均密度和生物量显著大于低潮区和高潮区;各潮区多板类、腹足类、双壳类、甲壳类、多毛类和其他动物的密度差异显著,双壳类、甲壳类和其他动物的生物量差异显著,多板类、腹足类和多毛类的生物量无显著差异。Shannon指数、Margalef丰富度指数和Pielou均匀度指数的平均值分别为2.79、0.62和2.41。群落聚类分析与非度量多维标度分析结果吻合,群落结构主要与底质特性和浪击度有关。

关键词: 生物完整性指数(IBI), 随机森林, 自然梯度, 季风气候

Abstract: In July and August, 2011, an investigation was conducted on the community structure of macrozoobenthos in the rocky intertidal zone of uninhabited islands in Dongtou County of Zhejiang. One sampling section was set up in each of the seven islands, including Dazhuyu Island, Hudong Island, Beipanshan Island, Luantou Island, Neiyuan Island, Xiaoqu Island, and Zhongqu Island. A total of 102 macrozoobenthos species were collected, including 58 species of mollusca (5 species of Polyplacophora, 33 species of Gastropoda, and 20 species of Bivalvia), 22 species of Crustacea, 7 species of Polychaeta, and 15 species of others. The average density and biomass of the macrozoobenthos were (864±126) ind·m-2 and (1814.85±347.03) g·m-2, respectively. One-way ANOVA showed that the average density and biomass of the macrozoobenthos differed significantly among different islands. The among-island differences in the average density and biomass of the macrozoobenthos were dependent on the lineages. There was a significant difference in the density of Polyplacophora, Gastropoda, and Crustacea, but not of Bivalvia, Polychaeta, and others among the islands. The biomass of Polyplacophora, Crustacea, and others, but not of Gastropoda, Bivalvia, and Polychaeta differed significantly among islands. The average density and biomass of the macrozoobenthos were greater in the mid-tide zone than in the low-tide zone or high-tide zone. There were significant among-zone differences in the density of Polyplacophora, Gastropoda, Bivalvia, Crustacea, Polychaeta, and others, and in the biomass of Bivalvia, Crustacea, and others, but no differences in the biomass of Polyplacophora, Gastropoda, and Polychaeta. The mean values of the Shannon diversity index, Margalef’s richness index, and Pielou evenness index were 2.79, 0.62, and 2.41, respectively. The results of clustering analysis on the community traits were consistent with those of nonmetric multidimensional scaling, suggesting that the community structure was mainly related to the substrate characteristics and wave-hitting degree.

Key words: monsoonal climate., random forest, integrity of biotic index (IBI), natural gradients