Using simulation to determine standard requirements for recovery rates of fish stocks
Using simulation to determine standard requirements for recovery rates of fish stocks
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DOI：
10.1016/j.marpol.2016.07.026
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发表时间：
2016-11
期刊：
影响因子：
3.8
通讯作者：
T. Carruthers;D. Agnew
中科院分区：
文献类型：
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作者：
T. Carruthers;D. Agnew
在许多渔业环境中，管理人员必须将有关捕捞死亡率的参考点与有关种群生物量的恢复目标相协调。利用模拟方法研究了捕捞死亡率与资源恢复量之间的关系。模拟也被用来确定可行的恢复时间和捕捞死亡率可以作为一系列生活史特征的生物量目标的替代的情况。在确定种群回收方面，种群类型与种群枯竭程度同样重要。对于大多数生活史类型来说，实现重建目标的可能性相对较低，除非捕捞率至少比最大可持续产量低40%。在旨在实现目标种群状况的恢复计划中，以及在基于成果的认证标准中，需要考虑到对这些捕捞死亡率水平的反应相对缓慢。
In many fisheries settings, managers must reconcile reference points relating to fishing mortality rate with recovery objectives relating to stock biomass. Simulation was used to evaluate the relationship between fishing mortality rate and stock recovery. Simulation was also used to determine feasible recovery times and the circumstances under which fishing mortality rates can be used as a proxy for biomass targets for a range of life history traits. Stock type was as important in determining stock recovery as the level of stock depletion. For most life-history types there was a relatively low likelihood of achieving rebuilding targets unless fishing rates were at least 40% lower than those associated with maximum sustainable yield. The relatively slow response to these levels of fishing mortality needs to be taken into account in recovery plans that aim to achieve a target stock status, and in outcome-based certification standards.