The Diversity and Ecological Role of Non-scleractinian Corals (Antipatharia and Alcyonacea) on Scleractinian Cold-Water Coral Mounds
The Diversity and Ecological Role of Non-scleractinian Corals (Antipatharia and Alcyonacea) on Scleractinian Cold-Water Coral Mounds
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DOI：
10.3389/fmars.2019.00184
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发表时间：
2019-04-09
影响因子：
3.7
通讯作者：
Roberts, J. Murray
中科院分区：
文献类型：
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作者：
De Clippele, Laurence Helene;Huvenne, Veerle A.;Roberts, J. Murray
冷水珊瑚碳酸盐土丘是由建造框架的石珊瑚形成的，也是非石珊瑚的重要生境，其生态和作用在深海环境中研究不足。本文描述了东北大西洋罗卡尔滩洛加切夫丘省的非石珊瑚的多样性，生态和作用的石珊瑚冷水珊瑚碳酸盐土丘。在总共10个非石珊瑚物种被确定，这是沿着沿着8个视频样带绘制。八个物种被确定为黑珊瑚（三个属于裂殖珊瑚科，一个属于Leiopathidae，Cladopathidae和Antipathidae，两个属于未知的科），两个属于柳珊瑚（Isididae和Plexauridae）。最丰富的物种是Leiopathes sp.和Parantipathes sp. 2。具有高度多样性的非石珊瑚的地区被解释为提供足够的食物，弱种间竞争和存在的异质性和硬结算基板。还观察到Leiopathes sp.的小菌落与大菌落的密度和发生率差异，这可能与它们选择用于沉降的基质的稳定性差异有关。非石珊瑚，特别是黑珊瑚，是洛加切夫丘省螃蟹、海百合和虾的重要栖息地。观察到携带者蟹Paromola sp.携带plexaurid Paramuricea sp.和一种属于Parantipathes属的黑珊瑚物种，这种行为被认为是为蟹提供伪装或潜在的防御机制。需要更多关于非石珊瑚的生态生理学和精细尺度的当地有机物供应的信息，以了解是什么驱动了它们的空间分布和群落结构的差异。
Cold-water coral carbonate mounds, created by framework-building scleractinian corals, are also important habitats for non-scleractinian corals, whose ecology and role are understudied in deep-sea environments. This paper describes the diversity, ecology and role of non-scleractinian corals on scleractinian cold-water coral carbonate mounds in the Logachev Mound Province, Rockall Bank, NE Atlantic. In total ten non-scleractinian species were identified, which were mapped out along eight ROV video transects. Eight species were identified as black corals (three belonging to the family Schizopathidae, one each to the Leiopathidae, Cladopathidae, and Antipathidae and two to an unknown family) and two as gorgonians (Isididae and Plexauridae). The most abundant species were Leiopathes sp. and Parantipathes sp. 2. Areas with a high diversity of non-scleractinian corals are interpreted to offer sufficient food, weak inter-species competition and the presence of heterogeneous and hard settlement substrates. A difference in the density and occurrence of small vs. large colonies of Leiopathes sp. was also observed, which is likely related to a difference in the stability of the substrate they choose for settlement. Non-scleractinian corals, especially black corals, are an important habitat for crabs, crinoids, and shrimps in the Logachev Mound Province. The carrier crab Paromola sp. was observed carrying the plexaurid Paramuricea sp. and a black coral species belonging to the genus Parantipathes, a behavior believed to provide the crab with camouflage or potentially a defense mechanism against predators. More information on the ecophysiology of non-scleractinian corals and fine-scale local organic matter supply are needed to understand what drives differences in their spatial distribution and community structure.