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Strengthened enforcement enhances marine sanctuary performance

机译:加强执法力度,提高海洋保护区的绩效

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摘要

© 2015 The Authors. Marine sanctuaries are areas where the extraction of biota is not permitted. Although most marine sanctuaries have a positive influence on biotic communities, not all sanctuaries are meeting their conservation objectives. Amidst possible explanations (e.g., size, age and isolation), insufficient enforcement is often speculated to be a key driver of marine sanctuary underperformance. Despite this, there are few studies directly linking quantitative enforcement data to changes in biotic communities within marine sanctuaries. Here, we used an asymmetrical-BACI experimental design from 2006-2012 to test whether new enforcement initiatives enhanced abundances of target fishes and threatened species in an existing large sub-tropical marine sanctuary relative to areas open to fishing. Implementation of the new enforcement initiatives in 2010 was associated with a 201% increase in annual fine rate and a significant increase in target fish and elasmobranch abundance, as well as sightings of a critically-endangered shark, in the marine sanctuary relative to areas open to fishing. Overall, these results demonstrate that strengthening enforcement can have a rapid positive influence on target fish and perhaps threatened species in a subtropical marine sanctuary. From this, we contend that increased enforcement guided by risk-based compliance planning and operations may be a useful first step for improving underperforming marine sanctuaries.
机译:©2015作者。海洋保护区是不允许提取生物区的区域。尽管大多数海洋保护区对生物群落都有积极影响,但并非所有保护区都达到其保护目标。在可能的解释中(例如规模,年龄和隔离),通常认为执法不足是导致海洋保护区表现不佳的关键因素。尽管如此,很少有研究直接将定量执法数据与海洋保护区内生物群落的变化联系起来。在这里,我们使用了2006-2012年间的非对称BACI实验设计来测试新的执法措施是否相对于开放捕鱼的区域增强了现有大型亚热带海洋保护区中目标鱼类和受威胁物种的数量。在2010年实施新的执法举措后,与开放区域相比,海洋保护区的年罚款率提高了201%,目标鱼类和弹枝鱼类的丰度大大提高,并发现了濒临灭绝的鲨鱼。钓鱼。总体而言,这些结果表明,加强执法可以对目标鱼类以及亚热带海洋保护区中的受威胁物种产生迅速的积极影响。因此,我们认为在基于风险的合规计划和运营的指导下加强执法可能是改善表现不佳的海洋保护区的有用的第一步。

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