{
  "annotation_id": "c7856f63-5736-47fa-b858-63ab87f88a17",
  "date_created": "2026-03-02T18:01:31.153000Z",
  "date_modified": "2026-03-02T18:01:31.153000Z",
  "file_hash": "00347f860143004341be845f8587f620b6b8538be17ec3311c02e3edec596a97",
  "private": false,
  "record": {
    "abstract": "Fluctuations in diversity and extinction sizes are discussed and compared for\ntwo different, individual-based models of biological coevolution. Both models\ndisplay power-law distributions for various quantities of evolutionary\ninterest, such as the lifetimes of individual species, the quiet periods\nbetween evolutionary upheavals larger than a given cutoff, and the sizes of\nextinction events. Time series of the diversity and measures of the size of\nextinctions give rise to flicker noise. Surprisingly, the power-law behaviors\nof the probability densities of quiet periods in the two models differ, while\nthe distributions of the lifetimes of individual species are the same.",
    "arxiv_id": "q-bio/0502046",
    "authors": [
      "Per Arne Rikvold"
    ],
    "categories": [
      "q-bio.PE",
      "cond-mat.stat-mech"
    ],
    "doi": "10.1117/12.609762",
    "journal_ref": "Proceedings of SPIE -- Volume 5845, Noise in Complex Systems and\n  Stochastic Dynamics III, edited by L.B. Kish, K. Lindenberg, and Z. Gingl\n  (SPIE, Bellingham, WA, 2005), pp. 148-155.",
    "title": "Fluctuations in models of biological macroevolution",
    "url": "https://arxiv.org/abs/q-bio/0502046"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d00d4688-05bc-4df8-a8a1-25b83799df70",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}