Management adaptation of invertebrate fisheries to an extreme marine heat wave event at a global warming hot spot.
Management adaptation of invertebrate fisheries to an extreme marine heat wave event at a global warming hot spot.
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DOI：
10.1002/ece3.2137
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发表时间：
2016-06
影响因子：
2.6
通讯作者：
Chandrapavan A
中科院分区：
文献类型：
--
作者：
Caputi N;Kangas M;Denham A;Feng M;Pearce A;Hetzel Y;Chandrapavan A
2010/11年夏季，澳大利亚中西部海岸发生了一场影响2000公里的极端海洋热浪，海表温度（SST）异常高于正常气候2-5°C。热浪是在印度洋全球变暖热点的极端拉尼娜事件期间受到强烈的列文海流的影响。这一事件对海洋生态系统产生了重大影响，海草/藻类和珊瑚生境发生变化，鱼类死亡，一些热带物种的分布范围向南扩展。在接下来的两个夏季，即2011/12和2012/13，高于平均的SST加剧了这种影响。本研究探讨了这一事件对无脊椎渔业的主要影响以及所采取的管理措施。一个99%的死亡率的罗氏鲍鱼（Haliotis roei）和招募的扇贝（Amusium balloti），国王（南美白对虾）和虎（P. esculentus）虾，蓝梭子蟹的大幅减少检测与管理适应努力减少或空间/时间关闭，以保护产卵种群和放养正在评估。这项研究表明，极端温度事件下的渔业管理需要及早识别温度热点，及早发现丰度变化（最好使用补充前调查），以及灵活的捕捞策略，以便快速反应，最大限度地减少过度捕捞对补充不足的影响，从而保护产卵种群。这就要求研究人员、管理人员和业界适应受极端环境事件影响的鱼类种群，由于气候变化，极端环境事件可能变得更加频繁。
An extreme marine heat wave which affected 2000 km of the midwest coast of Australia occurred in the 2010/11 austral summer, with sea‐surface temperature (SST) anomalies of 2–5°C above normal climatology. The heat wave was influenced by a strong Leeuwin Current during an extreme La Niña event at a global warming hot spot in the Indian Ocean. This event had a significant effect on the marine ecosystem with changes to seagrass/algae and coral habitats, as well as fish kills and southern extension of the range of some tropical species. The effect has been exacerbated by above‐average SST in the following two summers, 2011/12 and 2012/13. This study examined the major impact the event had on invertebrate fisheries and the management adaption applied. A 99% mortality of Roei abalone (Haliotis roei) and major reductions in recruitment of scallops (Amusium balloti), king (Penaeus latisulcatus) and tiger (P. esculentus) prawns, and blue swimmer crabs were detected with management adapting with effort reductions or spatial/temporal closures to protect the spawning stock and restocking being evaluated. This study illustrates that fisheries management under extreme temperature events requires an early identification of temperature hot spots, early detection of abundance changes (preferably using pre‐recruit surveys), and flexible harvest strategies which allow a quick response to minimize the effect of heavy fishing on poor recruitment to enable protection of the spawning stock. This has required researchers, managers, and industry to adapt to fish stocks affected by an extreme environmental event that may become more frequent due to climate change.
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影响因子：
2.8
作者：
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通讯作者：
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作者：
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