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首页> 外文期刊>Indian Journal of Fisheries >Distribution and abundance of benthic macrofauna in Nalaban Island, Chilika, Orissa
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Distribution and abundance of benthic macrofauna in Nalaban Island, Chilika, Orissa

机译:底栖大型动物在奥里萨邦奇利卡纳拉班岛的底栖动物分布

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摘要

The present study deals with the distribution and abundance of macrobenthic community in Nalaban Island, Chilika Lagoon. Five macro-invertebrate groups viz., gastropods, pelecypods, isopods, amphipods and polychaetes were recorded. Gastropods (75.7%)comprised the most abundant group of macrobenthos followed by pelecypods (16.9%), isopods (4.9%), polychaetes (0.35%) and amphipods (0.07%). The species diversity index showed a wide range of higher H values indicating a stable benthic community with absence of environmental stress. Further, the community structure did not show any significant spatial variation in species composition. Interestingly, significant correlation was noticed between gastropods and isopods. Further, the statistical analysis confirmed that there exists significant variation within the molluscan species rather than variation within stations.
机译:本研究涉及奇利卡泻湖纳拉班岛大型底栖动物群落的分布和丰富度。记录了五个大型无脊椎动物类群,即腹足类,腹足类,等足类,两栖类和多足类。腹足类动物(75.7%)是大型底栖动物中最丰富的一组,其次是腹足类动物(16.9%),等脚类动物(4.9%),多足类动物(0.35%)和两栖类动物(0.07%)。物种多样性指数显示出较高的H值范围,表明底栖生物群落稳定,没有环境压力。此外,群落结构在物种组成上没有显示任何明显的空间变化。有趣的是,在腹足动物和等足动物之间发现了显着的相关性。此外,统计分析证实,软体动物内部存在显着变化,而不是站内存在变化。

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