{
  "annotation_id": "dc1be11d-c1b1-4998-809d-33a34347807a",
  "date_created": "2026-03-02T18:01:35.851000Z",
  "date_modified": "2026-03-02T18:01:35.851000Z",
  "file_hash": "081ee12e7105232381e67cf66aa31233744bb1608a9ae05f1f73581b6ac0b6b2",
  "private": false,
  "record": {
    "abstract": "We study an individual-based predator-prey model of biological coevolution,\nusing linear stability analysis and large-scale kinetic Monte Carlo\nsimulations. The model exhibits approximate 1/f noise in diversity and\npopulation-size fluctuations, and it generates a sequence of quasi-steady\ncommunities in the form of simple food webs. These communities are quite\nresilient toward the loss of one or a few species, which is reflected in\ndifferent power-law exponents for the durations of communities and the\nlifetimes of species. The exponent for the former is near -1, while the latter\nis close to -2. Statistical characteristics of the evolving communities,\nincluding degree (predator and prey) distributions and proportions of basal,\nintermediate, and top species, compare reasonably with data for real food webs.",
    "arxiv_id": "q-bio/0611023",
    "authors": [
      "Per Arne Rikvold",
      "Volkan Sevim"
    ],
    "categories": [
      "q-bio.PE",
      "cond-mat.stat-mech",
      "nlin.AO"
    ],
    "doi": "10.1103/PhysRevE.75.051920",
    "journal_ref": "Phys. REv. E 75, 051920 (2007). (17 pages)",
    "title": "An individual-based predator-prey model for biological coevolution:   Fluctuations, stability, and community structure",
    "url": "https://arxiv.org/abs/q-bio/0611023"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "bd9fe5a5-096a-469c-aa11-a8128e92a971",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}