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首页> 外文期刊>Archive of Fishery and Marine Research >Occurrence and distribution pattern of mesozooplank-ton at the Great Meteor Seamount (subtropical North-east Atlantic)
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Occurrence and distribution pattern of mesozooplank-ton at the Great Meteor Seamount (subtropical North-east Atlantic)

机译：大流星海山（亚热带东北大西洋）中小球藻的发生和分布模式

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摘要

The effect of the Great Meteor Seamount on the distribution and composition of mesozooplankton was investigated in September 1998. Stratified zooplankton tows were carried out at 17 stations with a multiple opening-closing net. At all stations holoplankton dominated the assemblages (99%). Copepods were by far the most abundant taxon representing about 90% of the total specimens. Appendicularians ranked second in abundance, their main abundance being at plateau stations, followed by gastropods and ostra-cods. Larval stages of benthic and pelagic taxa were found only in small numbers. Most taxa occurred at all stations, independent of habitat, but larvae of cirrepedes, bryozoans and Branchiostoma were only found above the plateau. Most taxa occurred in higher mean numbers above the plateau compared to the slope and oceanic habitats, but a significant difference between habitats could only be shown for a few taxa. Day-night differences were found between the habitats. The mean abundance was high above the plateau during daytime, over the slope and in the oceanic habitat, however, during the night. This suggests that the interactions of migrating zooplankton with the relatively shallow topography of the Great Meteor Seamount lead to gap formation above the plateau during night.
机译：1998年9月，研究了大流星海山对中层浮游生物分布和组成的影响。在17个站台进行了浮游动物的分层拖曳，有多个开闭网。在所有站台中，浮游生物占主导地位（99％）。 pe足类是迄今为止最丰富的分类单元，约占标本总数的90％。附生动物的丰度排名第二，其主要丰度在高原站，其次是腹足动物和雌性鳕。底栖和浮游类群的幼虫期仅发现少数。大多数类群发生在所有站中，而与栖息地无关，但是仅在高原以上发现了卷柏，苔藓虫和分支气孔的幼虫。与斜坡和海洋生境相比，大多数生物分类发生在高原以上的平均数更高，但仅少数几个生物分类能显示出生境之间的显着差异。发现栖息地之间存在昼夜差异。白天，高原上，斜坡上和海洋栖息地中的平均丰度较高，但夜间则较高。这表明，浮游动物的迁移与大流星海山相对较浅的地形之间的相互作用导致了夜间高原上空位的形成。

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