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首页> 外文期刊>Marine Environmental Research >Patterns of variation of intertidal species of commercial interest in the Parque Litoral Norte (north Portugal) MPA: Comparison with three reference shores
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Patterns of variation of intertidal species of commercial interest in the Parque Litoral Norte (north Portugal) MPA: Comparison with three reference shores

机译：Parque Litoral Norte（北部葡萄牙）MPA中具有商业意义的潮间带物种的变化模式：与三个参考海岸的比较

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摘要

Marine Protected Areas (MPAs) are world-wide established with the aim of conserving biodiversity and preventing overexploitation of marine organisms. Evaluating the effectiveness of MPAs is needed in order to support and implement their management, but it is complicated by the large natural variability in space and time of distribution and abundance of natural populations. Here, we tested the hypothesis that patterns of total abundance and size-frequency distribution of two intensively harvested intertidal species (the sea urchin Paracentrotus lividus and the mussel Mytilus galloprovincialis) differed between a protected and three reference shores along the rocky coast of north Portugal. Response variables were in terms of mean values and measures of variance at different spatial scales (from centimetres to metres) and over time (along a period of about 12 months). A further comparison involved the estimation of the reproductive potential of sea urchins, quantified as variations of Gonad Index (GI = gonad dry weight/ body dry weight x 100) at the scale of shore. Results did not generally support a predictable direct effect of protection, as the total abundance and the abundance of larger individuals of both species and GI did not differ between the MPA and reference shores. However, a considerable temporal and spatial variability at smaller scales was detected for several response variables. Such findings have implications for management of MPAs, highlighting the need for sampling designs properly replicated in space and time, in order to examine their effectiveness, and for considering spatial and temporal heterogeneity of target populations and driving processes as a criterion for their implementation and design.
机译：海洋保护区（MPA）在世界范围内建立，其目的是保护生物多样性和防止海洋生物的过度开发。为了支持和实施MPA的管理，需要评估MPA的有效性，但是由于分布空间和时间的巨大自然变化以及自然人口的丰富性，使MPA的工作变得复杂。在这里，我们检验了以下假设：葡萄牙北部多岩石海岸沿岸的受保护海岸和三个参照海岸之间，两个密集捕捞的潮间物种（海胆Paracentrotus lividus和贻贝Mytilus galloprovincialis）的总丰度和大小-频率分布模式不同。响应变量是根据平均值和在不同空间范围（从厘米到米）以及随着时间的推移（约12个月）的方差度量。进一步的比较包括对海胆繁殖潜力的估计，量化为海岸尺度上的性腺指数（GI =性腺干重/身体干重×100）的变化。结果通常不能支持可预测的直接保护作用，因为在MPA和参考海岸之间，物种和地理标志的总丰度和较大个体的丰度没有差异。但是，对于几个响应变量，在较小的范围内检测到相当大的时间和空间变异性。这些发现对海洋保护区的管理具有重要意义，强调需要在时空上正确复制抽样设计，以检查其有效性，并考虑将目标人群和驱动过程的时空异质性作为实施和设计的标准。

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  • 来源
    《Marine Environmental Research》 |2012年第6期|p.60-70|共11页
  • 作者

    Iacopo Bertocci; Rula Dominguez; Cristiano Freitas; Isabel Sousa-Pinto;

  • 作者单位

    CIIMAR/GMAR, Centra Interdisciplinar de Investigacao Marinha e Ambiental, Rua dos Bragas, 289, 4050-123 Porto, Portugal;

    CIIMAR/GMAR, Centra Interdisciplinar de Investigacao Marinha e Ambiental, Rua dos Bragas, 289, 4050-123 Porto, Portugal;

    CIIMAR/GMAR, Centra Interdisciplinar de Investigacao Marinha e Ambiental, Rua dos Bragas, 289, 4050-123 Porto, Portugal;

    CIIMAR/GMAR, Centra Interdisciplinar de Investigacao Marinha e Ambiental, Rua dos Bragas, 289, 4050-123 Porto, Portugal,Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s, 4169-007 Porto, Portugal;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    MPAs; rocky intertidal; spatial and temporal heterogeneity; paracentrotus lividus; mytilus galloprovincialis; management; portugal;

    机译：MPA;潮间带岩石时空异质性licentus paracentrotus鸡没食子体管理;葡萄牙;

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