dorsal/arxiv
View SchemaCorrelation, selection and the evolution of species networks
| Authors | Simon Laird, Henrik Jeldtoft Jensen |
|---|---|
| Categories | |
| ArXiv ID | q-bio/0608004 |
| URL | https://arxiv.org/abs/q-bio/0608004 |
Abstract
We use a generalised version of the individual-based Tangled Nature model of evolutionary ecology to study the relationship between ecosystem structure and evolutionary history. Our evolved model ecosystems typically exhibit interaction networks with exponential degree distributions and an inverse dependence between connectance and species richness. We use a simplified network evolution model to demonstrate that the observed degree distributions can occur as a consequence of partial correlations in the inheritance process. Futher to this, in the limit of low connectance and maximal correlation, distributions of power law form, $P(k){\propto}1/k$, can be achieved. We also show that a hyperbolic relationship between connectance and species richness, $C{\sim}1/D$ can arise as a consequence of probabilistic constraints on the evolutionary search process.
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"date_created": "2026-03-02T18:01:35.812000Z",
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"abstract": "We use a generalised version of the individual-based Tangled Nature model of\nevolutionary ecology to study the relationship between ecosystem structure and\nevolutionary history. Our evolved model ecosystems typically exhibit\ninteraction networks with exponential degree distributions and an inverse\ndependence between connectance and species richness. We use a simplified\nnetwork evolution model to demonstrate that the observed degree distributions\ncan occur as a consequence of partial correlations in the inheritance process.\nFuther to this, in the limit of low connectance and maximal correlation,\ndistributions of power law form, $P(k){\\propto}1/k$, can be achieved. We also\nshow that a hyperbolic relationship between connectance and species richness,\n$C{\\sim}1/D$ can arise as a consequence of probabilistic constraints on the\nevolutionary search process.",
"arxiv_id": "q-bio/0608004",
"authors": [
"Simon Laird",
"Henrik Jeldtoft Jensen"
],
"categories": [
"q-bio.PE"
],
"title": "Correlation, selection and the evolution of species networks",
"url": "https://arxiv.org/abs/q-bio/0608004"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "ee7b57c5-df00-4055-9a33-9af779c40bec",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
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