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首页> 外文期刊>ICES Journal of Marine Science >Biodiversity of North Sea fish: why do the politicians care but marine scientists appear oblivious to this issue?
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Biodiversity of North Sea fish: why do the politicians care but marine scientists appear oblivious to this issue?

机译：北海鱼类的生物多样性：为什么政客们会关心，但海洋科学家似乎对这个问题不屑一顾？

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摘要

Political drivers underpinning the development of an Ecosystem Approach to Marine Management (EAMM) focus on conserving and restoring biodiversity. However, the Element of Ecological Quality for Fish Communities that emerged from the 2002 Bergen North Sea Ministerial Conference relates to "Changes in the proportion of large fish and hence the average weight and average maximum length of the fish community". How did this apparent change in direction arise? Responding to advice requests from OSPAR, ICES established seven criteria for identifying "state" indicators capable of supporting indicator-based management. Application of these criteria underlined the merits of indicators of fish size, whereas diversity indices performed poorly against four of the criteria. These difficulties are examined here. Far from being oblivious to the issue of biodiversity, marine scientists recognized that they were not in a position to recommend Ecological Quality Objectives (EcoQOs) for fish biodiversity that would have relied on the use of biodiversity indicators. The use of indicators of size structure, for which the theoretical foundation was better developed, allowed the continued development of an EAMM in the short term. However, if the issue of biodiversity is to be addressed in the longer term, then shortcomings associated with the use of biodiversity indicators need to be addressed.
机译：发展海洋管理生态系统方法（EAMM）的政治驱动力着重于保护和恢复生物多样性。但是，2002年卑尔根北海部长级会议提出的鱼类群落生态质量要素与“大型鱼类比例的变化以及鱼类群落的平均重量和平均最大长度的变化”有关。这种明显的方向变化是如何产生的？响应OSPAR的建议请求，ICES建立了七个标准来识别能够支持基于指标的管理的“状态”指标。这些标准的应用强调了鱼类大小指标的优点，而多样性指数相对于其中四个标准的表现却很差。在这里检查这些困难。海洋科学家远未忽略生物多样性问题，但认识到他们无法为鱼类生物多样性提出生态质量目标（EcoQO），而这些生态质量目标将依赖于生物多样性指标的使用。通过使用规模结构指标，可以更好地发展理论基础，从而可以在短期内继续开发EAMM。但是，如果要长期解决生物多样性问题，则需要解决与使用生物多样性指标有关的缺点。

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