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Should we protect extirpated fish spawning aggregation sites?
Biological Conservation ( IF 5.9 ) Pub Date : 2020-01-01 , DOI: 10.1016/j.biocon.2019.108395
Iliana Chollett , Mark Priest , Stuart Fulton , William D Heyman

Abstract Some locations have extraordinary ecological and conservation significance and subsequently need protection to guarantee the persistence of species that depend on them. Fish Spawning Aggregation (FSA) sites, where fish congregate to breed, are examples of such places, but are being extirpated worldwide through overfishing. Although transient FSA sites figure prominently as priority areas for conservation, extirpated aggregations, that due to current low abundance at spawning times are no longer recognizable as FSAs, represent a dilemma for managers. Given the limited resources available for conservation actions, should we protect extirpated FSAs or omit them from spatial management plans? Here we present two contrasting points of view, look into the mechanisms associated with the emergence and maintenance of aggregation sites, and review available evidence of recovery in the field. Of the 53 extirpated FSA sites examined, 9 (17%) reported recovery, always after strict management was implemented. All recovered sites were located in the wider Caribbean and western Atlantic. We make the case that extirpated FSAs seem to have the potential to recover and their protection may provide a cost effective way to help rebuild fisheries. It is unclear, however, if a remnant population is needed to allow recovery. Current methods used to monitor and assess FSA status and extirpation are not consistent, hindering site trend analysis, between-site comparisons and meta-analysis. We suggest that monitoring and management should be made more consistent and strengthened to boost FSA recovery.

中文翻译:

我们是否应该保护已灭绝的鱼类产卵聚集地?

摘要 一些地点具有非凡的生态和保护意义,因此需要保护以保证依赖它们的物种的持久性。鱼类聚集繁殖的鱼类产卵聚集 (FSA) 地点就是此类地点的例子,但由于过度捕捞,世界范围内正在灭绝。尽管暂时的 FSA 站点突出地作为保护的优先区域,但由于产卵时当前的低丰度,已灭绝的聚集体不再被识别为 FSA,这对管理人员来说是一个两难的境地。鉴于可用于保护行动的资源有限,我们应该保护已灭绝的 FSA 还是将它们从空间管理计划中删除?在这里,我们提出两种截然不同的观点,研究与聚合站点的出现和维护相关的机制,并审查现场恢复的可用证据。在检查的 53 个已清除的 FSA 站点中,9 个 (17%) 报告恢复,总​​是在实施严格管理之后。所有回收的地点都位于更广阔的加勒比海和西大西洋。我们认为已灭绝的 FSA 似乎有恢复的潜力,它们的保护可以提供一种具有成本效益的方式来帮助重建渔业。然而,尚不清楚是否需要剩余种群才能恢复。当前用于监测和评估 FSA 状态和清除的方法并不一致,阻碍了站点趋势分析、站点间比较和荟萃分析。我们建议应该使监测和管理更加一致和加强,以促进 FSA 恢复。9 (17%) 报告恢复,总​​是在实施严格管理之后。所有回收的地点都位于更广阔的加勒比海和西大西洋。我们认为已灭绝的 FSA 似乎有恢复的潜力,它们的保护可以提供一种具有成本效益的方式来帮助重建渔业。然而,尚不清楚是否需要剩余种群才能恢复。当前用于监测和评估 FSA 状态和清除的方法并不一致,阻碍了站点趋势分析、站点间比较和荟萃分析。我们建议应该使监测和管理更加一致和加强,以促进 FSA 恢复。9 (17%) 报告恢复,总​​是在实施严格管理之后。所有回收的地点都位于更广阔的加勒比海和西大西洋。我们认为已灭绝的 FSA 似乎有恢复的潜力,它们的保护可以提供一种具有成本效益的方式来帮助重建渔业。然而,尚不清楚是否需要剩余种群才能恢复。当前用于监测和评估 FSA 状态和清除的方法并不一致,阻碍了站点趋势分析、站点间比较和荟萃分析。我们建议应该使监测和管理更加一致和加强,以促进 FSA 恢复。我们认为已灭绝的 FSA 似乎有恢复的潜力,它们的保护可以提供一种具有成本效益的方式来帮助重建渔业。然而,尚不清楚是否需要剩余种群才能恢复。当前用于监测和评估 FSA 状态和清除的方法并不一致,阻碍了站点趋势分析、站点间比较和荟萃分析。我们建议应该使监测和管理更加一致和加强,以促进 FSA 恢复。我们认为已灭绝的 FSA 似乎有恢复的潜力,它们的保护可以提供一种具有成本效益的方式来帮助重建渔业。然而,尚不清楚是否需要剩余种群才能恢复。当前用于监测和评估 FSA 状态和清除的方法并不一致,阻碍了站点趋势分析、站点间比较和荟萃分析。我们建议应该使监测和管理更加一致和加强,以促进 FSA 恢复。
更新日期:2020-01-01
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