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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Pattern of species succession of soft-bottom macrofauna in the estuaries of Goa, west coast of India
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Pattern of species succession of soft-bottom macrofauna in the estuaries of Goa, west coast of India

机译：印度西海岸果阿河口软底大型动物的物种演替模式

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摘要

Multivariate techniques, chord normalized expected species shared (CNESS) and principal component analyses of hypergeometric probability of species matrices (PCA-H) were applied to soft-bottom macrofauna data of Goa estuaries, west coast of India, to assess the pattern of species succession at different sites. These analyses revealed three groups of species that produced three-stages or triangular species succession pattern, corresponding to the three seasons, namely post-, pre- and southwest monsoon. Each site exhibited a different pattern of species succession and compostion. A total of 58 species were recorded among which 18 were new to the local fauna. Dominant species that controlled the orientation of this succession were Polychaetes (Prioniospio pinnata, Clymene annandalei, Nereis capensis), Bivalves (Meretrix casta, Cardium flavum), Amphipoda (Urothoe platydactyla), Echiurida (Thalassema sp.) and Nematoda at different sites. Species succession was mainly influenced by the southwest monsoon and the local biotic and abiotic factors at specific sites.
机译：将多变量技术，和弦归一化的预期物种共有量（CNESS）和物种矩阵超几何概率的主成分分析（PCA-H）应用于印度西海岸果阿河口的软底大型动物数据，以评估物种演替模式在不同的站点。这些分析揭示了三类物种产生了三个阶段或三角形的物种演替模式，对应于三个季节，即季风前后，西南季风和西南季风。每个地点展示出不同的物种演替和组成模式。总共记录了58种，其中18种是当地动物的新种。控制该演替方向的主要物种是多毛Poly（Prioniospio pinnata，Clymene annandalei，Nereis capensis），双壳类（Meretrix casta，Cardium flavum），两栖类（Urothoe platydactyla），棘皮目（Thalassema sp。）和线虫在不同地点。物种演替主要受西南季风以及特定地点局部生物和非生物因素的影响。

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