{
  "annotation_id": "6c3aa6ee-02bf-4143-98e1-3656b3b4a833",
  "date_created": "2026-03-02T18:01:31.935000Z",
  "date_modified": "2026-03-02T18:01:31.935000Z",
  "file_hash": "4cd5e45ffbca5f6ef3096f8403c3026f39c5503649d86fc53d02cb39328c6a22",
  "private": false,
  "record": {
    "abstract": "We present a mathematical analysis of the speciation model for food-web\nstructure, which had in previous work been shown to yield a good description of\nempirical data of food-web topology. The degree distributions of the network\nare derived. Properties of the speciation model are compared to those of other\nmodels that successfully describe empirical data. It is argued that the\nspeciation model unifies the underlying ideas of previous theories. In\nparticular, it offers a mechanistic explanation for the success of the niche\nmodel of Williams and Martinez and the frequent observation of intervality in\nempirical food webs.",
    "arxiv_id": "q-bio/0502007",
    "authors": [
      "A. G. Rossberg",
      "H. Matsuda",
      "T. Amemiya",
      "K. Itoh"
    ],
    "categories": [
      "q-bio.PE",
      "q-bio.MN"
    ],
    "title": "Some Properties of the Speciation Model for Food-Web Structure -   Mechanisms for Degree Distributions and Intervality",
    "url": "https://arxiv.org/abs/q-bio/0502007"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "0c5f63b5-4e9f-41eb-97ac-d91ef1728051",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}