The effects of landscape composition and physiognomy on metapopulation size: the role of corridors
The effects of landscape composition and physiognomy on metapopulation size: the role of corridors
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DOI：
10.1023/a:1007933623979
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发表时间：
1997-10-01
影响因子：
5.2
通讯作者：
Danielson, BJ
中科院分区：
文献类型：
--
作者：
Anderson, GS;Danielson, BJ
我们开发并分析了一个模型，该模型检验了走廊的质量、数量和安排对超人口规模的影响。Lefkovitch和Fahrig（1985）以及Henein和Merriam（1990）曾对这些观点进行过研究。我们的模拟结果与Henein和Merriam模型相似，表明景观中走廊的质量及其排列将影响元种群的大小。然后，我们进一步描述了走廊安排如何改变元人口，并提供了一种预测哪种走廊安排应该支持更大的元人口的方法。与Henein和Merriam模型相反，我们发现走廊连接的数量对景观中元种群的大小没有影响，除非走廊连接在斑块之间分布的均匀性发生变化。
We develop and analyze a model that examines the effects of corridor quality, quantity, and arrangement on metapopulation sizes. These ideas were formerly investigated by Lefkovitch and Fahrig (1985) and Henein and Merriam (1990). Our simulations provide results similar to the Henein and Merriam model, indicating that the quality of corridors in a landscape and their arrangement will influence the size of a metapopulation. We then go one step further, describing how corridor arrangement alters the metapopulation, and provide a method for predicting which corridor arrangements should support larger metapopulations. In contrast to the Henein and Merriam model, we find that the number of corridor connections has no influence on the size of a metapopulation in a landscape unless there is an accompanying change in the uniformity of the distribution of corridor connections among patches.