Development of the large fish indicator and associated target for a Northeast Atlantic fish community
Development of the large fish indicator and associated target for a Northeast Atlantic fish community
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制定东北大西洋鱼类群落大型鱼类指标和相关目标
DOI：
10.1093/icesjms/fsu101
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发表时间：
2014
影响因子：
3.3
通讯作者：
S. Greenstreet
中科院分区：
文献类型：
--
作者：
L. Modica;F. Velasco;I. Preciado;M. Soto;S. Greenstreet
制定大型鱼类指标(LFI)是为了支持北海鱼类群落生态质量目标(EcoQO)试点研究，旨在建立一种可操作的生态系统管理方法。随后，在北海建立的程序被应用于凯尔特海，以得出该区域特有的LFI和目标。《海洋战略框架指令》(MSFD)要求共享海洋区域的欧盟成员国利用《区域海洋公约》和它们已经通过的指标开展合作。MSFD明确建议将LFI作为食物网指标，但它也同样可以用于监测生物多样性。在这里，我们应用既定的理论基础来开发专门针对比斯开湾南部的LFI和目标。尽管LFI在20世纪90年代有所下降，但随后在2008年恢复到接近原始价值。此前，LFI与捕捞压力之间的关系存在较长的时间滞后。我们观察到了类似的关系，但滞后时间更短。造成LFI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。
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.