Fish aggregating devices could enhance the effectiveness of blue water marine protected areas

IF 7.7 1区 环境科学与生态学 Q1 BIODIVERSITY CONSERVATION
Michael Bode, Edward T. Game, Alex Wegmann, Kydd Pollock
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引用次数: 0

Abstract

In the past two decades, drifting fish aggregation devices (FADs) have revolutionized pelagic fisheries, and are now responsible for the majority of tuna purse seine catches. Here, we argue that by taking advantage of the same proven aggregative properties, FADs could be used to enhance the benefits provided by blue water marine protected areas (MPAs). Using models of commercially targeted fish populations, we explore the potential benefits that could be achieved if unfished conservation FADs—designed as self-powered devices capable of remaining semi-stationary—were deployed within blue water MPAs. By increasing the residence time of exploited species in MPAs, conservation FADs will reduce average mortality rates. By increasing the local density of exploited species, they may also improve the function of ecosystems in blue water MPAs. Conservation FADs could, therefore, amplify the benefits of blue water MPAs. We find this amplification is largest in those contexts where blue water MPAs have attracted the most criticism—when their area is small compared to both the open ocean and the distribution of fish stocks that move through them.
鱼类聚集装置可以提高蓝水海洋保护区的有效性
在过去的二十年里,漂流鱼类聚集装置(FAD)彻底改变了中上层渔业,现在是金枪鱼围网捕捞量的主要来源。在这里,我们认为,通过利用相同的已证明的聚集特性,FAD可以用于增强蓝水海洋保护区(MPA)提供的好处。使用商业目标鱼类种群的模型,我们探索了如果在蓝水海洋保护区内部署未脱落的保护FAD(设计为能够保持半静止的自供电设备)可能带来的潜在好处。通过增加被开发物种在MPA中的停留时间,保护性FAD将降低平均死亡率。通过增加被开发物种的局部密度,它们还可以改善蓝水海洋保护区的生态系统功能。因此,保护FAD可以扩大蓝水海洋保护区的好处。我们发现,在蓝水海洋保护区受到最多批评的情况下,这种放大是最大的——与公海和流经它们的鱼类种群分布相比,它们的面积很小。
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来源期刊
Conservation Letters
Conservation Letters BIODIVERSITY CONSERVATION-
CiteScore
13.50
自引率
2.40%
发文量
70
审稿时长
>12 weeks
期刊介绍: Conservation Letters is a reputable scientific journal that is devoted to the publication of both empirical and theoretical research that has important implications for the conservation of biological diversity. The journal warmly invites submissions from various disciplines within the biological and social sciences, with a particular interest in interdisciplinary work. The primary aim is to advance both pragmatic conservation objectives and scientific knowledge. Manuscripts are subject to a rapid communication schedule, therefore they should address current and relevant topics. Research articles should effectively communicate the significance of their findings in relation to conservation policy and practice.
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