Locally dispersing populations in heterogeneous dynamic landscapes with spatiotemporal correlations. II. Habitat driven by voter dynamics

JOURNAL OF THEORETICAL BIOLOGY

卷:407

Article

Hiebeler, David E.¹  Hill, Jack L.¹ 

[1] Univ Maine, Dept Math & Stat, Orono, ME 04469 USA

关键词: Habitat loss and fragmentation;    Cellular automata voter model;    Dynamic habitat;    Spatiotemporal structure;    Stochastic spatial simulation;   

DOI  :  10.1016/j.jtbi.2016.07.033

来源: Elsevier

【 摘 要 】

We examine a spatially explicit population model on a dynamic landscape with suitable and unsuitable habitat driven by voter or contagion dynamics. We consider four cases, consisting of all combinations of local and global interactions for both population dispersal and habitat dynamics. For both local and global population dispersal, using local habitat dynamics always increases population density relative to the case with global habitat dynamics, due to the resulting segregation of habitat turnover, decrease in effective habitat turnover rate, and presence of stable habitat corridors. With global habitat dynamics, a population using local dispersal exhibits lower density than one with global dispersal due to local crowding as well as frequent disturbance due to habitat transitions. On the other hand, with local habitat dynamics, a population using local dispersal can exploit suitable habitat patches and use dynamic corridors to colonize new regions. The latter effect is not seen with static landscapes, where clustered habitat can lead to the isolation of suitable patches due to surrounding unsuitable habitat. (C) 2016 Elsevier Ltd. All rights reserved.

【 授权许可】

Free