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首页> 外文期刊>Polar biology >Quantitative analysis of soft-bottom polychaetes of the Bellingshausen Sea and Gerlache Strait (Antarctica)
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Quantitative analysis of soft-bottom polychaetes of the Bellingshausen Sea and Gerlache Strait (Antarctica)

机译：贝灵斯豪森海和格拉拉什海峡（南极洲）的软底多毛绒动物的定量分析

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摘要

The basin off the Bellingshausen Sea, in contrast to other better known areas such as the Antarctic Peninsula and the Ross and Weddell Seas, has been little investigated due to remoteness and the prevalence of ice for most of the year. The present study focuses on an analysis of polychaetes collected from soft bottoms of this sea and off the west coast of the Antarctic Peninsula (Gerlache Strait) by means of a box-corer (25 x 25 cm) in two intensive surveys carried out during austral summers of 2002-2003 and 2005-2006 (BENTART-03 and BENTART-06). Three different polychaete assemblages were determined from the classification and ordination analyses of sampling stations based on the Bray-Curtis similarity index. One group of stations encompassed the deep stations from the shelf of the Bellingshausen Sea, the second one the shallower stations from the same area and the third one those stations located near the coast of Peter I Island and Gerlache Strait, off the Antarctic Peninsula. The environmental variables involved in segregating these groups were several sedimentary features (redox potential, gravel content) and depth. The present study provides further support to previous ones that considered the shelf of the Bellingshausen Sea as a differentiated region within the Southern Ocean, clearly distinct to the adjacent Weddell and Scott Seas and the Antarctic Peninsula.
机译：与其他众所周知的地区（如南极半岛以及罗斯和韦德尔海）相比，贝灵豪森海沿岸的盆地由于一年中的大部分时间偏远和冰的盛行而很少进行调查。本研究的重点是在南极半岛南部（Gerlache海峡）的软海底和南极半岛（Gerlache海峡）附近采集的多壳类动物，通过盒角（25 x 25 cm）在南半球进行的两次密集调查中进行分析2002-2003年和2005-2006年夏季（BENTART-03和BENTART-06）。根据Bray-Curtis相似性指数，通过对采样站的分类和排序分析确定了三种不同的多壳动物组合。一组站包括贝灵斯豪森海陆架的深站，第二组是同一地区的较浅站，第三站是位于南极半岛彼得一岛和杰拉奇海峡附近的站。隔离这些组所涉及的环境变量是几个沉积特征（氧化还原电位，砾石含量）和深度。本研究为先前的研究提供了进一步的支持，先前的研究认为贝灵斯豪森海陆架是南部海洋中的一个分化区域，与相邻的韦德尔海和斯科特海以及南极半岛明显不同。

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  • 来源
    《Polar biology》 |2011年第5期|p.715-730|共16页
  • 作者

    J. Parapar; E. Lopez; M. C. Gambi; J. Nunez; A. Ramos;

  • 作者单位

    Departamento de Bioloxia Animal, Facultade de Ciencias, Universidade da Corufia, Alejandro de la Sota 1, 15008 A Corufia, Spain;

    Laboratorio de Biologfa Marina e Invertebrados, Departamento de Biologfa, Facultad de Ciencias, Universidad Aut6noma de Madrid, 28049 Madrid, Spain;

    Laboratorio di Ecologia del Benthos, Stazione Zoologica 'A. Dohrn', Pta. S. Pietro, 80077 Ischia, Naples, Italy;

    Laboratorio di Ecologia del Benthos, Stazione Zoologica 'A. Dohrn', Pta. S. Pietro, 80077 Ischia, Naples, Italy;

    Departamento de Biologfa Animal, Universidad de La Laguna, 38206 La Laguna, Tenerife, Islas Canarias, Spain,IEO Centro Oceanogrdfico de Vigo, Cabo Estai-Canido, 36200 Vigo, Spain;

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  • 正文语种 eng
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  • 关键词

    polychaetes; soft bottoms; benthos; box-corer; distribution; BENT ART cruises; antarctica;

    机译：多毛绒软底便当箱芯分配;本特艺术巡游;南极洲;

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