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首页> 外文期刊>Russian journal of marine biology >The Diatom Distribution in the Surface Sediments of the Eastern Arctic Seas of Russia
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The Diatom Distribution in the Surface Sediments of the Eastern Arctic Seas of Russia

机译：俄罗斯东北极海表层沉积物中的硅藻分布

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摘要

The distribution features of diatoms in the surface sediments of the Laptev, East Siberian, and Chukchi seas were studied. The sediment diatom content varied widely, being lowest in the East Siberian Sea and highest in the Chukchi Sea. Cluster analysis revealed several diatom assemblages in the surface sediments of the studied region; their distribution depended on the hydrological conditions. A benthic Amphora libyca assemblage, a freshwater Aulacoseira subarctica one, and a brackish-water Thalassiosira hyperborea assemblage were identified in the Laptev Sea. A cold-water Th. antarctica assemblage was distinguished in the eastern part of the East Siberian Sea and in the northern Chukchi Sea; a highly productive Chaetoceros assemblage was noted in the Herald Canyon area; a sublittoral Odontella aurita assemblage occurred in sandy sediments of the Herald Shoal; a Paralia sulcata assemblage, which is an indicator of low salinity waters, was found in the eastern Chukchi Sea near Alaska; and "sea-ice" Th. nordenskioeldii and Fragillariopsis oceanica assemblages occurred in the southern Chukchi Sea.
机译：研究了拉普捷夫，东西伯利亚和楚科奇海表层沉积物中的硅藻分布特征。沉积物硅藻含量变化很大，在东西伯利亚海最低，在楚科奇海最高。聚类分析揭示了研究区域表层沉积物中的几种硅藻组合。它们的分布取决于水文条件。在拉普捷夫海中发现了一个底栖的两栖类植物组合，一个淡水Aulacoseira亚arctica组合和一个咸水的Thalasiosira hyperborea组合。冷水Th。南极洲组合在东西伯利亚海的东部和楚科奇海的北部有所区分。在先驱峡谷地区发现了高产的Chaetoceros组合；在先驱浅滩的沙质沉积物中发生了沿海岸的Odontella aurita组合；在阿拉斯加附近的楚科奇海东部发现了一种低盐水域指示物的帕拉里亚苏卡塔组合。和“海冰” Th。 nordenskioeldii和Fragillariopsis oceanica组合发生在楚科奇海南部。

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