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首页> 外文期刊>ICES Journal of Marine Science >Rebuilding depleted fish stocks: the good, the bad, and, mostly, the ugly
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Rebuilding depleted fish stocks: the good, the bad, and, mostly, the ugly

机译：重建枯竭的鱼类资源：好的，坏的，以及主要是丑陋的

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摘要

Recovery of depleted fish populations has become an important theme in national and international negotiations and commitments regarding sustainability. Although up to 63% offish stocks worldwide may be in need of rebuilding, only 1% are currently classified as "rebuilding", and fewer yet have been "rebuilt". Recent history in stock recovery provides a rich source of examples of rebuilding plans across a spectrum of execution ("good", "bad", "ugly", and "in progress"). Of 24 depleted stocks with formal plans that successfully reduced the fishing mortality, all but one exhibited signs of recovery. The median instantaneous annual rate of biomass recovery (0.16) was similar to the rate of depletion ( - 0.14) experienced, but stocks with more vulnerable life histories recovered substantially slower than they had been depleted. Most successful rebuilding programmes have incorporated substantial, measurable reductions in fishing mortality at the onset, rather than relying on incremental small reductions over time. A particularly vexing issue is the differ-ential pace of recovery among relatively productive and unproductive components of mixed-species fisheries. Rebuilding the majority of stocks classified worldwide as "overfished" will take a more effective, consistent, and politically supported stock-recovery paradigm, if society is eventually to meet its articulated sustainability goals for global fisheries.
机译：恢复枯竭的鱼类种群已成为国家和国际有关可持续性的谈判和承诺的重要主题。尽管全球可能有多达63％的鱼类资源需要重建，但目前只有1％的鱼类被归类为“重建”，而“重建”的数量则更少。库存恢复的最新历史为跨执行范围（“好”，“坏”，“丑陋”和“进行中”）的重建计划提供了丰富的示例。在已正式制定计划以成功降低捕捞死亡率的24只枯竭种群中，除一只以外，其他所有种群均显示出恢复的迹象。瞬时年生物量回收率的中位数（0.16）与经历的消耗率（-0.14）相似，但是具有更脆弱的生活历史的种群的恢复速度明显慢于被消耗的速度。大多数成功的重建计划在开始时就已经将捕鱼死亡率的降低进行了可衡量的大幅度降低，而不是依赖于随着时间的推移逐渐减少。一个特别令人烦恼的问题是混合物种渔业中相对生产性和非生产性成分之间恢复的差异速度。如果社会最终要实现其针对全球渔业的明确可持续性目标，则重建全球范围内被归类为“过度捕捞”的大多数种群将采用一种更有效，一致和有政治依据的种群恢复范例。

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