Three-lattice metapopulation model: Connecting corridor between patches may be harmful due to “hub effect”

IF 3.1 3区环境科学与生态学 Q2 ECOLOGY Ecological Complexity Pub Date : 2024-06-01 DOI:10.1016/j.ecocom.2024.101090

Nariyuki Nakagiri , Hiroki Yokoi , Ayako Morishita , Kei-ichi Tainaka

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Abstract

Many authors have reported the risk of habitat fragmentation and the importance of connecting corridors between subpopulations (patches). However, we report that the connection of corridors may be harmful to species conservation. The paper deals with the birth and death processes of a single species living in a network composed of three patches. The disturbance due to a changing environment is assumed to affect only one patch. Two types of metapopulation models are applied. One is the lattice simulation model where we set a lattice as a patch. The other is based on metapopulation theory, which utilizes reaction-migration equations. The lattice simulation reveals that the connecting corridor between patches may be disadvantageous; the complete graph or a network with fully connected corridors is found not to be optimal for species conservation. Similar results are indicated by the application of metapopulation theory. We discuss the relationship between the risk of corridor construction and the effect of the hub patch.

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三格元种群模型：由于 "枢纽效应"，斑块之间的连接走廊可能是有害的

许多学者都报告了栖息地破碎化的风险以及亚种群（斑块）之间连接走廊的重要性。然而，我们的报告指出，走廊的连接可能对物种保护有害。本文论述了生活在由三个斑块组成的网络中的单一物种的出生和死亡过程。假设环境变化引起的干扰只影响一个斑块。本文应用了两种元种群模型。一种是晶格模拟模型，我们将一个晶格设置为一个斑块。另一种是基于元种群理论，利用反应-迁移方程。格网模拟显示，斑块之间的连接走廊可能是不利的；完整的图或具有完全连接走廊的网络并不是物种保护的最佳选择。元种群理论的应用也显示了类似的结果。我们讨论了走廊建设风险与中心斑块效应之间的关系。

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来源期刊

Ecological Complexity 环境科学-生态学

CiteScore

7.10

自引率

0.00%

发文量

审稿时长

3 months

期刊介绍： Ecological Complexity is an international journal devoted to the publication of high quality, peer-reviewed articles on all aspects of biocomplexity in the environment, theoretical ecology, and special issues on topics of current interest. The scope of the journal is wide and interdisciplinary with an integrated and quantitative approach. The journal particularly encourages submission of papers that integrate natural and social processes at appropriately broad spatio-temporal scales. Ecological Complexity will publish research into the following areas: • All aspects of biocomplexity in the environment and theoretical ecology • Ecosystems and biospheres as complex adaptive systems • Self-organization of spatially extended ecosystems • Emergent properties and structures of complex ecosystems • Ecological pattern formation in space and time • The role of biophysical constraints and evolutionary attractors on species assemblages • Ecological scaling (scale invariance, scale covariance and across scale dynamics), allometry, and hierarchy theory • Ecological topology and networks • Studies towards an ecology of complex systems • Complex systems approaches for the study of dynamic human-environment interactions • Using knowledge of nonlinear phenomena to better guide policy development for adaptation strategies and mitigation to environmental change • New tools and methods for studying ecological complexity