dorsal/arxiv
View SchemaExtinction dynamics of Lotka-Volterra ecosystems on evolving networks
| Authors | Francois Coppex, Michel Droz, Adam Lipowski |
|---|---|
| Categories | |
| ArXiv ID | q-bio/0312030 |
| URL | https://arxiv.org/abs/q-bio/0312030 |
| DOI | 10.1103/PhysRevE.69.061901 |
| Journal | Phys. Rev. E 69, 061901 (2004) |
Abstract
We study a model of a multi-species ecosystem described by Lotka-Volterra-like equations. Interactions among species form a network whose evolution is determined by the dynamics of the model. Numerical simulations show power-law distribution of intervals between extinctions, but only for ecosystems with sufficient variability of species and with networks of connectivity above certain threshold that is very close to the percolation threshold of the network. Effect of slow environmental changes on extinction dynamics, degree distribution of the network of interspecies interactions, and some emergent properties of our model are also examined.
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"abstract": "We study a model of a multi-species ecosystem described by\nLotka-Volterra-like equations. Interactions among species form a network whose\nevolution is determined by the dynamics of the model. Numerical simulations\nshow power-law distribution of intervals between extinctions, but only for\necosystems with sufficient variability of species and with networks of\nconnectivity above certain threshold that is very close to the percolation\nthreshold of the network. Effect of slow environmental changes on extinction\ndynamics, degree distribution of the network of interspecies interactions, and\nsome emergent properties of our model are also examined.",
"arxiv_id": "q-bio/0312030",
"authors": [
"Francois Coppex",
"Michel Droz",
"Adam Lipowski"
],
"categories": [
"q-bio.PE",
"cond-mat.stat-mech"
],
"doi": "10.1103/PhysRevE.69.061901",
"journal_ref": "Phys. Rev. E 69, 061901 (2004)",
"title": "Extinction dynamics of Lotka-Volterra ecosystems on evolving networks",
"url": "https://arxiv.org/abs/q-bio/0312030"
},
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