Spatial population dynamics and the design of marine reserves
Spatial population dynamics and the design of marine reserves
复制标题
空间人口动态与海洋保护区设计
DOI：
10.1046/j.1461-0248.1999.00064.x
复制
发表时间：
1999
期刊：
影响因子：
--
通讯作者：
Jonzén
中科院分区：
文献类型：
--
作者：
Lundberg;Jonzén
世界范围内许多渔业的失败，以及对海洋生物多样性的关注，引发了人们对捕捞种群空间方面的兴趣。如果一个种群符合理想自由分布，并且其中一个栖息地被划出作为保护区，不受采伐，保护区的设计可能会有问题。如果要保留相当大比例的未收获种群，那么保留区必须大得不切实际，或者比未保护区有更高的预期适合度。有趣的是，最佳收获率将不受保护区的大小和相对于收获区的质量的影响。即使理想自由分布模型扩展到包括简单的年龄结构和“溢出”的新兵从储备，这些结论基本上保持不变。在一个模型中，也包括溢出，保护区的栖息地质量也可能影响渔获量。
The failure of many fisheries world-wide, and the concern about marine biodiversity, has sparked a growing interest in the spatial aspects of harvested populations. If a population conforms to the Ideal Free Distribution and that one of the habitats is set aside as a reserve free from harvesting, the design of reserves may be problematic. If a substantial proportion of the unharvested population is to be preserved, then the reserve area must be unrealistically large, or have a much higher expected fitness than the unprotected area. Interestingly, the optimal harvest rate will be unaffected by both the size of the reserve and the quality of it relative to the harvested area. Even if the Ideal Free Distribution model is extended to include simple age-structure and "spillover" of recruits from the reserve, these conclusions largely remain intact. In a model that also includes spillover, the habitat quality of the reserve may also affect the catch.