Environmental and anthropogenic effects impact species abundance, density and distribution

调查和比较空间生态的两个沿海浮游鲨鱼物种在Ascension：一个偏远的英国海外领土，是世界上最大的海洋保护区（MPA）之一包围。自2017年以来，鲨鱼在Ascension岛受到法律保护。然而，最近，越来越多的定期和无法解释的运动的加拉帕戈斯鲨鱼（Carcharhinus galapagensis）到浅水，沿海栖息地已造成重大冲突与渔民和其他娱乐海洋用户威胁到破坏支持MPA。监督小组的初步工作已经确定了Ascension周围的几个明显的热点，这些热点经常支持加拉帕戈斯和丝状鲨鱼（Carcharhinus falciformis）的混合物种“超级学校”。然而，目前尚不清楚这些地点的重要性以及鲨鱼分布的时间变异性的驱动因素，包括加拉帕戈斯鲨鱼的聚集行为和周期性沿岸运动。解决这一知识差距已被确定为Ascension Island MPA研究战略的优先事项。

Investigating and comparing the spatial ecology of two coastal-pelagic shark species at Ascension Island: a remote UK Overseas Territory that is surrounded by one of the world's largest marine protected areas (MPA). Sharks have been legally protected at Ascension Island since 2017. Recently, however, increasingly regular, and unexplained movements of Galapagos sharks (Carcharhinus galapagensis) into shallow, coastal habitats have created significant conflicts with fishers and other recreational ocean users which threaten to undermine support for the MPA. Preliminary work by the supervisory team has identified several apparent hotspots around Ascension Island that frequently support mixed species 'super schools' of Galapagos and silky sharks (Carcharhinus falciformis). However, the significance of these sites and drivers of temporal variability in shark distributions - including aggregating behaviours and periodic inshore movements of Galapagos sharks - are currently unknown. Addressing this knowledge gap has been identified as a priority in the Ascension Island MPA Research Strategy.