Connectivity of marine populations: Open or closed?
Connectivity of marine populations: Open or closed?
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DOI：
10.1126/science.287.5454.857
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发表时间：
2000-02-04
期刊：
影响因子：
56.9
通讯作者：
Olson, DB
中科院分区：
文献类型：
--
作者：
Cowen, RK;Lwiza, KMM;Olson, DB
大多数海洋种群被认为是通过幼虫阶段的长距离传播而紧密相连的。欧拉和拉格朗日流量模型，加上线性死亡率估计，被用来检查这一假设。研究结果表明，当使用简单的平流模型时，幼虫交换率可能被高估;这种过于简单的模型无法解释扩散和死亡导致的幼虫浓度下降高达九个数量级的情况。替代过程的幼虫保留在当地人口的存在，并可能是非常重要的海洋人口结构的维护和沿海海洋资源的管理。
Most marine populations are thought to be well connected via long-distance dispersal of larval stages. Eulerian and Lagrangian flow models, coupled with Linear mortality estimates, were used to examine this assumption. The findings show that when simple advection models are used, Larval exchange rates may be overestimated; such simplistic models fail to account for a decrease of up to nine orders of magnitude in larval concentrations resulting from diffusion and mortality. The alternative process of larval retention near local populations is shown to exist and may be of great importance in the maintenance of marine population structure and management of coastal marine resources.