Larval dispersal reveals regional sources and sinks in the Great Barrier Reef
Larval dispersal reveals regional sources and sinks in the Great Barrier Reef
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DOI：
10.3354/meps308017
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发表时间：
2006-01-01
影响因子：
2.5
通讯作者：
Armsworth, PR
中科院分区：
文献类型：
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作者：
Bode, M;Bode, L;Armsworth, PR
我们分析了大堡礁凯恩斯段的珊瑚鱼幼体的模拟连接模式，并确定了2个关键的次区域，表现出区域尺度的源-汇动态。源和汇在纬度上由南纬16.1度的边界分开，源区位于北面。幼虫运输之间的2个次区域主要是单向的，从北到南。只有少数当地人口，这里描述为“门户礁”，能够运输幼虫从汇次区域的源次区域，从而保持连接的集合种群。北方次区域能够坚持没有外部幼虫供应，但当条件招聘有限，南部次区域依赖于幼虫供应从北方坚持。北方分区域的相对自治及其在维持南方分区域方面的重要性将影响到保护工作的有效性。
We analysed simulated connectivity patterns for reef fish larvae in the Cairns section of the Great Barrier Reef, and identified 2 key subregions that exhibit regional scale source-sink dynamics. The source and sink were separated latitudinally by a boundary at 16.1 degrees S, with the source subregion lying to the north. Larval transport between the 2 subregions was predominantly unidirectional, from north to south. Only a few local populations, described here as 'gateway reefs', were able to transport larvae from the sink subregion to the source subregion and thus maintain the connectedness of the metapopulation. The northern subregion was able to persist without external larval supply, but when conditions were recruitment limited, the southern Subregion depended on larval supply from the north to persist. The relative autonomy of the northern subregion, and its importance in sustaining the Southern subregion, will influence the effectiveness of conservation efforts.