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首页> 外文期刊>Polar biology >Variability in intertidal communities along a latitudinal gradient in the Southern Ocean
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Variability in intertidal communities along a latitudinal gradient in the Southern Ocean

机译：南大洋沿纬度梯度的潮间带群落变化

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摘要

Despite being one of the most intensely studied habitat types worldwide, the intertidal region around Antarctica has received little more than superficial study. Despite this, the first detailed study of a single locality on the Antarctic Peninsula reported previously unanticipated levels of species richness, biomass and diversity in cryptic intertidal habitats. The current study extends the coverage achieved from this single locality. The intertidal zone at sites in the Scotia Arc, the Falkland Islands and the Antarctic Peninsula was investigated. At all the study sites selected, a wide range of macrofauna was found inhabiting the littoral fringe. These communities, although generally cryptic and occupying predominantly the undersides of boulders and protected interstices, at some locations and sites were rich at multiple taxonomic levels. Across the study locations species richness in the intertidal zone ranged from 7 to 30 species. The highest species richness and diversity were found at high latitude localities, which experienced the highest physical disturbance due to ice scour, and appeared superficially to be denuded of life. Species assemblages varied with latitude with Adelaide Island having a high proportion of bryozoans relative to all other localities.
机译：尽管是全球研究最深入的栖息地类型之一，但南极洲周围的潮间带地区接受的只是表面研究。尽管如此，对南极半岛一个单一地点的首次详细研究报告说，以前在潮间带隐蔽生境中物种丰富度，生物量和多样性水平是出乎意料的。当前的研究扩展了从单一地点获得的覆盖范围。调查了斯科舍弧，福克兰群岛和南极半岛站点的潮间带。在所有选定的研究地点中，在沿海边缘发现了大量的大型动物。这些社区虽然通常是隐秘的，并且主要占据巨石和受保护的空隙的下面，但在某些位置和地点，它们在多个分类学层次上都很丰富。在整个研究地点，潮间带的物种丰富度为7至30种。在高纬度地区发现了最高的物种丰富度和多样性，这些地区由于冰灾而遭受的物理干扰最高，表面看来被剥夺了生命。物种组成随纬度而变化，阿德莱德岛的苔藓虫相对于所有其他地方具有很高的比例。

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