海洋保护区网络的灾变管理与保护区间距离
Catastrophe Management and Inter-Reserve Distance for Marine Reserve Networks
摘要:
我们认为,海洋保护区之间的最佳间距,最大限度地提高了一个物种的生存能力,占据储备网络。网络越靠近,空的保护区被占用的保护区殖民的可能性就越高,从而增加了种群的生存能力。然而,网络放置在一起越近,灾难导致两个保护区物种灭绝的可能性就越高,从而降低种群生存能力。使用一个简单的离散时间马尔可夫链模型的存在或不存在的物种在每个储备中,我们确定两个储备之间的距离,提供了这些过程之间的最佳权衡,从而在最大限度地生存的物种。
英文摘要:
We consider the optimal spacing between marine reserves for maximising the viability of a species occupying a reserve network. The closer the networks are placed together, the higher the probability of colonisation of an empty reserve by an occupied reserve, thus increasing population viability. However, the closer the networks are placed together, the higher the probability that a catastrophe will cause extinction of the species in both reserves, thus decreasing population viability. Using a simple discrete-time Markov chain model for the presence or absence of the species in each reserve we determine the distance between the two reserves which provides the optimal trade-off between these processes, resulting in maximum viability of the species.
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