The role of between-patch dynamics in a metapopulation: a discrete-time modelling approach
The role of between-patch dynamics in a metapopulation: a discrete-time modelling approach
复制标题
斑块间动态在集合种群中的作用:离散时间建模方法
DOI:
10.1007/s12080-020-00486-3
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发表时间:
2021
影响因子:
1.6
通讯作者:
Hastings, Alan
中科院分区:
文献类型:
--
作者:
Marculis, Nathan G.;Arroyo-Esquivel, Jorge;Hastings, Alan
We present a single-species metapopulation model structured by population size that is discrete in time. The novel formulation of our model allows for explicit incorporation of both the local, in space, dynamics and new details of the dispersal process. To study the impact of between-patch dynamics in the model, we construct various functions to describe density-dependent dispersal, recolonization, and between-patch stochasticity. Due to the complexity of the model, numerical simulations are used to obtain the distribution of the metapopulation. Moreover, we can use our model to predict the proportion of patches occupied, expected patch density, and variance in patch density. Our results provide insight into the influence that each of these processes play in the distribution of the metapopulation. In particular, our findings emphasize the benefit of explicitly modelling these processes. We consider two density-dependent dispersal strategies based upon individuals wanting to form average-sized patches and illustrate the differences in the metapopulation distributions. For recolonization of empty suitable patches, we look at two simplistic redistribution strategies modeled as either a continuous uniform or Laplace distribution. The between-patch stochasticity is modelled using redistribution kernels where we consider both thin-tailed and fat-tailed kernels. We find that the form of density-dependent dispersal has a major influence on the distribution of the metapopulation while recolonization is a key process for metapopulation persistence. In addition, fatter tails for the between-patch stochasticity can decrease the proportion of occupied patches and increase the expected patch density and variance in patch density.
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影响因子:
1.4
作者:
S. Vuilleumier;C. Wilcox;Benjamin Cairns;H. Possingham
通讯作者:
H. Possingham
影响因子:
3.5
作者:
K. Parvinen
通讯作者:
K. Parvinen
DOI:
10.1016/b978-0-12-181370-3.50013-0
发表时间:
1991
期刊:
Proceedings of the National Academy of Sciences
影响因子:
--
作者:
J. Dempster
通讯作者:
J. Dempster
影响因子:
1.4
作者:
GYLLENBERG, M;HANSKI, I
通讯作者:
HANSKI, I
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
K. Parvinen
通讯作者:
K. Parvinen