Catastrophe Management and Inter-Reserve Distance for Marine Reserve Networks

Details Catastrophe Management and Inter-Reserve Distance for Marine Reserve Networks Catastrophe Management and Inter-Reserve Distance for Marine Reserve Networks

2003-09-16

arxiv.org/abs/math/0309255v2

Mathematics

Optimization and Control

12 pages and 9 figures

Scientific paper

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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