EXCEPTIONAL TARDIGRADE‐DOMINATED ECOSYSTEMS IN ELLSWORTH LAND, ANTARCTICA
EXCEPTIONAL TARDIGRADE‐DOMINATED ECOSYSTEMS IN ELLSWORTH LAND, ANTARCTICA
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南极洲埃尔斯沃斯地以缓步动物为主的特殊生态系统
DOI：
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发表时间：
2005
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影响因子：
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通讯作者：
S. McInnes
中科院分区：
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作者：
P. Convey;S. McInnes
描述了南极洲埃尔斯沃斯大陆(∼75°-77°S，70°-73°W)内陆丘陵地带的陆生动物群落，仅含缓步动物和轮虫。该动物群以其简单性而出类拔萃，包括五个迟滞物种(三个科学新物种)和至少两个轮虫物种，它们包括两个消费者营养水平。线虫是以前在全世界报告的最简单的动物群的最重要的组成部分(来自南极大陆的罗斯海干谷地区)，而微节肢动物则没有出现在所有已知的南极陆地群落中。迟滞动物群落组成与南极大陆动物群具有亲缘关系，共有3种。剩下的两个物种是埃尔斯沃斯土地上独有的，可能表明作为一个独特的生物地理单位存在了很长时间。
We describe a terrestrial faunal community including only Tardigrada and Rotifera, present on inland nunataks of Ellsworth Land, Antarctica (∼75°–77° S, 70°–73° W). The fauna is exceptional in its simplicity, including five tardigrade species (three new to science) and at least two rotifer species, which comprise two consumer trophic levels. Nematode worms, the most important element of the simplest faunal communities previously reported worldwide (from the Ross Sea Dry Valley region of continental Antarctica), and microarthropods, otherwise represented in all known Antarctic terrestrial communities, are absent. The tardigrade community composition shows affinity with the continental Antarctic fauna, with which it shares three species. The remaining two species are unique to Ellsworth Land and may suggest a prolonged existence as a distinct biogeographical unit.