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首页> 外文期刊>Marine ecology >Crustacean decapod assemblages associated with fragmented Posidonia oceanica meadows in the Alboran Sea (Western Mediterranean Sea): composition, temporal dynamics and influence of meadow structure
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Crustacean decapod assemblages associated with fragmented Posidonia oceanica meadows in the Alboran Sea (Western Mediterranean Sea): composition, temporal dynamics and influence of meadow structure

机译：与阿尔伯兰海（西地中海）中零散的波西多尼亚海洋草甸相关的甲壳纲十足动物组合：组成，时间动态和草甸结构的影响

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摘要

The decapod assemblage associated with a Posidonia oceanica meadow located near its western limit of biogeographic distribution was studied over an annual cycle. Fauna samples were taken seasonally over a year (five replicates per season) in two sites located 7km apart, using a non-destructive sampling method (airlift sampler) for the seagrass. The dominant species of the assemblage, Pisidia longimana, Pilumnus hirtellus and Athanas nitescens, were associated with the protective rhizome stratum, which is mainly used as a nursery. The correlations between decapod assemblage structure and some phenological parameters of the seagrass shoots and wave height were negative or null, which reflects that species associated with the rhizome had a higher importance than those associated with the leaf stratum. The abundance and composition of the decapod assemblage as well as the ecological indexes displayed a seasonality trend with maximum values in summer-autumn and minimum in winter-spring, which were related to the seawater temperature and the recruitment periods of the dominant species. The spatial differences found in the structure and dynamics of the assemblages may be due to variations in the recruitment of the dominant species, probably as a result of the influence of local factors (e.g. temperature, currents) and the high dispersal ability of decapods, together with the patchy configuration and the surrounding habitats. The studied meadows are fragmented and are integrated within a mosaic of habitats (Cymodocea nodosa patches, algal meadows, rocky and sandy bottoms), which promotes the movement of individuals and species among them, maintaining a high species richness and evenness.
机译：在一个年度周期内，研究了与位于其生物地理分布的西部极限附近的波西多尼亚大洋洲草地相关的十足动物组合。对海草使用非破坏性采样方法（气举采样器），在相距7公里的两个地点进行为期一年以上的季节性动物采样（每个季节重复五次）。该组合的优势种Pisidia longimana，Pilumnus hirtellus和Athanas nitescens与保护性根茎层有关，后者主要用作苗圃。十足动物的组装结构与海草枝条的某些物候参数和波高之间的相关为负或为零，这表明与根茎相关的物种比与叶层相关的物种具有更高的重要性。十足动物组合的丰度和组成以及生态指标显示出季节性趋势，夏秋季最大，冬春季最小，这与海水温度和优势物种的吸收期有关。组合物的结构和动力学中发现的空间差异可能是由于优势种补充的变化所致，这可能是由于局部因素（例如温度，水流）和十足动物的高扩散能力共同作用的结果。与斑驳的配置和周围的栖息地。所研究的草地是零散的，并整合在一个栖息地的马赛克中（Cymodocea nodosa斑块，藻类草甸，岩石和沙质底部），这促进了个体和物种在其中的移动，从而保持了很高的物种丰富度和均匀性。

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  • 来源
    《Marine ecology》 |2016年第2期|344-358|共15页
  • 作者

    Mateo‐Ramírez Ángel; Urra Javier; Marina Pablo; Rueda José L.; García Raso José Enrique;

  • 作者单位

    Facultad de Ciencias Universidad de Málaga Departamento de Biología Animal Málaga Spain;

    Facultad de Ciencias Universidad de Málaga Departamento de Biología Animal Málaga Spain;

    Instituto Español de Oceanografía Centro Oceanográfico de Málaga FuengirolaMálaga Spain;

    Facultad de Ciencias Universidad de Málaga Departamento de Biología Animal Málaga Spain;

    Instituto Español de Oceanografía Centro Oceanográfico de Málaga FuengirolaMálaga Spain;

    Instituto Español de Oceanografía Centro Oceanográfico de Málaga FuengirolaMálaga Spain;

    Facultad de Ciencias Universidad de Málaga Departamento de Biología Animal Málaga Spain;

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  • 正文语种 eng
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  • 关键词

    Alboran Sea; decapod assemblages; fragmented; Posidonia oceanica; temporal dynamics;

    机译：阿尔伯兰海;十足动物组合;片段化;大洋波塞冬;时间动态;

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