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首页> 外文期刊>Marine ecology progress series >Ectosymbiosis is a critical factor in the local benthic biodiversity of the Antarctic deep sea
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Ectosymbiosis is a critical factor in the local benthic biodiversity of the Antarctic deep sea

机译：骨共生是南极深海当地底栖生物多样性的关键因素

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In deep-sea benthic environments, competition for hard substrates is a critical factor in the distribution and diversity of organisms. In this context, the occurrence of biotic substrates in addition to mineral substrates may change the characteristics of sessile fauna. We tested this hypothesis at different localities of the Weddell Sea (Antarctica) by studying the diversity of ectosymbionts living on the spines of cidaroids (echinoids). The presence of cidaroids promoted a higher total specific richness and increased sessile species abundance, but did not change the diversity. Analyses of species distribution suggested that the cidaroids are a favourable habitat for sessile organisms, compared to rocks, but are colonized by relatively specialist sessile species, leaving the unfavourable rock habitat to more generalist species. Therefore, our study highlights the role of some living organisms, such as cidaroids, as key species increasing Antarctic benthic deep-sea species richness through the niche they provide to symbiotic species.
机译：在深海底栖环境中，对硬质底物的竞争是生物分布和多样性的关键因素。在这种情况下，除了矿物底物外，生物底物的出现也可能改变无柄动物的特征。我们通过研究生活在洋地龙（棘突类动物）的棘突上的共生共生体的多样性，在威德尔海（南极洲）的不同地区测试了这一假设。拟南芥的存在促进了较高的总比丰富度，并增加了无柄种的丰度，但并未改变多样性。对物种分布的分析表明，与岩石相比，拟鬼怪是固着生物的有利生境，但被相对专业的固着物种所定居，从而使不利的岩石生境变成了多才多艺的物种。因此，我们的研究强调了某些活生物体的作用，例如洋杉科动物，它们是通过提供给共生物种的利基来增加南极底栖深海物种丰富度的关键物种。

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