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首页> 外文期刊>Russian journal of marine biology >Metazoan Meiobenthos and Nematode Assemblages in the Nyegga Region of Methane Seepage (Norwegian Sea)
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Metazoan Meiobenthos and Nematode Assemblages in the Nyegga Region of Methane Seepage (Norwegian Sea)

机译：甲烷渗透的Nyegga地区的后生动物Meiobenthos和线虫组合（挪威海）

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摘要

Based on visual observations in the Nyegga (Norwegian Sea) methane seep area we defined arbitrary boundaries and defined the following types of microbiotopes: the siboglinid field, bacterial mat, and background sediment. The metazoan meiobenthos consisted of 14 major taxa; the Nematoda dominated at seven of the eight stations. The taxonomic diversity of metazoan meiobenthos in the siboglinid fields was higher than that in the background bottom area. The average population density in siboglinid microbiotope exceeded the abundance of organisms in the background sediments by 1.3 times. The nematode population and total meiobenthos varied in bacterial maths. The modal size fraction of meiobenthos and nematodes regardless of microbiotopes fell on samples that were obtained on sieves with 63-125 μm mesh sizes. In total, 88 nematod species belonging to 26 families and 63 genera were recorded. The species diversity decreased in the direction from the background biotope to siboglinid fields and further to bacterial mats.
机译：基于在Nyegga（挪威海）甲烷渗透区的视觉观察，我们定义了任意边界，并定义了以下类型的微生物群落：倾斜岩层，细菌垫和背景沉积物。后生的生物底栖动物由14个主要的分类单元组成。线虫在八个站点中的七个站点占主导地位。西伯利亚亚麻田中后生中生底栖动物的分类学多样性高于背景底部区域。血吸虫微生物群落的平均种群密度比背景沉积物中生物的丰度高出1.3倍。线虫种群和总底栖动物在细菌数学上有所不同。不论微生物群落大小如何，底栖和线虫的模态尺寸分数均落在筛网尺寸为63-125μm的筛子上获得的样品上。总共记录了88个属于26个科和63属的线虫种类。物种多样性在从背景生物群落到西伯利亚林地再到细菌垫的方向上降低。

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