Abstract

In this paper, the distribution of polychaetes in the Laptev Sea and New Siberian shoal is analyzed based on 115 bottom trawl samples taken in August–October 2014. Polychaetes were the most species-rich group (83 taxa, 74 identified to the species level). Two faunistic assemblages of polychaetes, coastal and offshore ones, were distinguished. The boundary of their distribution did not coincide with the boundaries of assemblages defined for the other groups of the trawl zoobenthos. In the southwestern part of the Laptev Sea it coincided with the boundary between positive and negative near-bottom temperatures, and in the New Siberian shoal it coincided with a 28 PSU isohaline. The coastal assemblage was dominated by species that were widespread in the sea area. Only five carnivorous and detritovorous species were typical for the complex. The offshore assemblage included 26 characteristic species belonging to all trophic groups. Besides, the proportion of sparsely distributed species was much higher in the offshore assemblage compared to the coastal one.

中文翻译：

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拉普捷夫海和新西伯利亚浅滩中多毛羚的分布及其与环境因素的关系

摘要

本文基于2014年8月至2014年10月采集的115个底拖网样本分析了拉普捷夫海和新西伯利亚浅滩中多毛类动物的分布。多毛类动物是物种最多的一组（83个分类单元，其中74个在物种水平上确定） 。区分了多壳动物的两个功能主义组合，沿海和近海的。它们的分布边界与为拖网动物底栖动物的其他组定义的集合的边界不一致。在拉普捷夫海的西南部，它与正负近底温度之间的边界重合，而在新西伯利亚浅滩中，它与28 PSU等盐线重合。沿海地区以在海域广泛分布的物种为主。该复合体中只有五个食肉和杂食物种。离岸组合包括属于所有营养类的26个特征物种。此外，与沿海物种相比，近海组合中稀疏分布物种的比例要高得多。