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首页> 外文期刊>Journal of marine systems: journal of the European Association of Marine Sciences and Techniques >Deep epibenthic communities in two contrasting areas of the Balearic Islands (western Mediterranean)
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Deep epibenthic communities in two contrasting areas of the Balearic Islands (western Mediterranean)

机译：巴利阿里群岛（地中海西部）两个形成鲜明对比的地区的深层地表群落

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摘要

Epibenthic communitieswere studied in two areas, off western and southern Mallorca (Balearic Islands, western Mediterranean), which differ in the oceanographic conditions and show different degrees of oligotrophy. Sampling was performed with beam trawl at two seasons (December 2009 and July 2010) and at depths between 228 and 900 m. A total of 199 taxawere identified, ofwhich themost diversewere decapod crustaceans and fishes. Depth was the main factor structuring megafaunal assemblages. In the shelf break the shrimps Plesionika heterocarpus, P. antigai, Processa nouveli and P. canaliculata were dominant. In the upper slope, P. acanthonotus, Boreomysis arctica, Gaidropsarus biscayensis and Aristeus antennatus were the species that most contributed to the group formation, whereas in the middle slope the crustaceans P. acanthonotus and Munida tenuimana dominated. Specific abundances were relatively low everywhere. Diversity H' values ranged from 2.19 to 3.17, being higher in Sóller. Using species abundance data, significant differences were identified concerning both area and season in both shelf break and upper slope strata, while no significant differences were found in the middle slope stratum. The analysis of functional groups showed that both depth and area had a significant effect on their differential distribution.
机译：在马洛卡岛西部和南部（巴利阿里群岛，地中海西部）附近的两个地区研究了表生动物群落，它们的海洋条件不同，并且表现出不同程度的寡营养。在两个季节（2009年12月和2010年7月），在228至900 m的深度处用束拖网进行采样。总共鉴定出199个紫杉类，其中十足类甲壳类动物和鱼类。深度是构成大型动物群的主要因素。在架子折断处，虾Plesionika heterocarpus，P。antigai，Processa nouveli和P. canaliculata占主导地位。在上坡中，​​a.canthonotus，北极杆菌，Gaidropsarus biscayensis和Aristeus触角藻是最有助于该群体形成的物种，而在中坡中，甲壳类a.canthonotus和Munida tenuimana占主导地位。各地的具体丰度相对较低。 H'值的多样性范围为2.19至3.17，在Sóller中较高。利用物种丰度数据，在架子折断处和上斜坡地层的面积和季节方面都发现了显着差异，而在中坡地层中没有发现显着差异。官能团的分析表明，深度和面积均对其差异分布有显着影响。

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