Recruitment hotspots and bottlenecks mediate the distribution of corals on a Caribbean reef.

Recruitment hotspots and bottlenecks mediate the distribution of corals on a Caribbean reef.
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DOI:
10.1098/rsbl.2021.0149
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发表时间:
2021-07
期刊:
影响因子:
3.3
通讯作者:
Edmunds PJ
Edmunds PJ
中科院分区:
生物学2区
文献类型:
--
作者:
Edmunds PJ

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招募热点是生物体以高速率添加到种群中的位置。在珊瑚数量减少的热带珊瑚礁上,补充热点很重要,因为它们有可能促进种群恢复。在美属维尔京群岛的圣约翰周围,五个地点的珊瑚补充揭示了一个持续了14年的热点。招聘创造了一个热点的密度的青少年珊瑚,是600米东南部的招聘热点。这两个热点都没有导致珊瑚覆盖增加,从而揭示了人口瓶颈的严格性,阻碍了新兵发展到成年人的大小,并阻止人口增长。低密度珊瑚种群的补充热点是保护的宝贵目标和珊瑚恢复的来源。
Recruitment hotspots are locations where organisms are added to populations at high rates. On tropical reefs where coral abundance has declined, recruitment hotspots are important because they have the potential to promote population recovery. Around St. John, US Virgin Islands, coral recruitment at five sites revealed a hotspot that has persistent for 14 years. Recruitment created a hotspot in density of juvenile corals that was 600 m southeast of the recruitment hotspot. Neither hotspot led to increased coral cover, thus revealing the stringency of the demographic bottleneck impeding progression of recruits to adult sizes and preventing population growth. Recruitment hotspots in low-density coral populations are valuable targets for conservation and sources of corals for restoration.
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