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首页> 外文期刊>ICES Journal of Marine Science >Development of the large fish indicator and associated target for a Northeast Atlantic fish community
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Development of the large fish indicator and associated target for a Northeast Atlantic fish community

机译：为东北大西洋鱼类群落开发大型鱼类指标和相关目标

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摘要

The large fish indicator (LFI) was developed to support the North Sea fish community Ecological Quality Objective (EcoQO) pilot study, intended to establish an operational ecosystem approach to management. Subsequently, procedures established in the North Sea were applied to the Celtic Sea to derive an LFI and target specific to this region. The Marine Strategy Framework Directive (MSFD) requires EU Member States sharing marine regions to cooperate using the Regional Seas Conventions, and using indicators already adopted by them. The MSFD explicitly suggests the LFI as a foodweb indicator, but it could equally well be used to monitor biodiversity. Here, we apply the established rationale to develop an LFI and target specific to the southern Bay of Biscay. Despite declining in the 1990s, the LFI subsequently recovered to near original values in 2008. Previously, relationships between the LFI and fishing pressure have involved lengthy time-lags. We observe a similar relationship, but with shorter lag. The nature of the larger species responsible for much of the change in the LFI may explain this difference, and might also suggest that, in the Bay of Biscay, the LFI is more appropriately used as a biodiversity indicator, rather than a foodweb indicator.
机译：开发大型鱼类指标（LFI）是为了支持北海鱼类群落生态质量目标（EcoQO）试点研究，旨在建立可操作的生态系统管理方法。随后，将在北海建立的程序应用于凯尔特海，以得出LFI和针对该区域的目标。 《海洋战略框架指令》（MSFD）要求共享海洋区域的欧盟成员国使用《区域海洋公约》并使用它们已经采用的指标进行合作。 MSFD明确建议将LFI作为食物网指标，但同样可以很好地用于监测生物多样性。在这里，我们运用已建立的原理来开发LFI，并针对比斯开湾南部特定目标。尽管在1990年代有所下降，但LFI随后在2008年恢复到接近原始值。以前，LFI与捕鱼压力之间的关系涉及较长的时间滞后。我们观察到类似的关系，但时滞较短。导致LFI发生很大变化的较大物种的性质可能解释了这种差异，也可能表明，在比斯开湾，LFI更适合用作生物多样性指标，而不是食物网指标。

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