{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:SHTYK7AB6KXDOYBXDYUXIWO2Y2","short_pith_number":"pith:SHTYK7AB","schema_version":"1.0","canonical_sha256":"91e7857c01f2ae3760371e297459dac6a7ca8a39b80423f27e0234bdb7fc0e01","source":{"kind":"arxiv","id":"1803.00487","version":3},"attestation_state":"computed","paper":{"title":"Speciation in a MacArthur model predicts growth, stability and adaptation in ecosystems dynamics","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.bio-ph"],"primary_cat":"q-bio.PE","authors_text":"Christian H.S. Hamster, Elena Bellavere, Joshua A. Dijksman","submitted_at":"2018-03-01T16:36:51Z","abstract_excerpt":"Ecosystems dynamics is often considered as driven by a coupling of species' resource consumption and its population size dynamics. Such resource-population dynamics is captured by MacArthur-type models. One biologically relevant feature that would also need to be captured by such models is the introduction of new and different species. Speciation introduces a stochastic component in the otherwise deterministic MacArthur theory. We describe here how speciation can be implemented to yield a model that is consistent with current theory on equilibrium resource-consumer models, but also displays re"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1803.00487","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"q-bio.PE","submitted_at":"2018-03-01T16:36:51Z","cross_cats_sorted":["physics.bio-ph"],"title_canon_sha256":"64ff0bc00faf10abf375169f495c5b15d77ab1e5f9b29d6d93f6cde4e3ea0078","abstract_canon_sha256":"0a4ca5eb58635efd2193d4d4253a9afefed9331ff6aabe2f0d93dbeb5da147a4"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:28:29.061156Z","signature_b64":"rZMz0/KE9otLDwOJIX5UG9mVVZVOC+p4NEU5ryj0iiU10lAgUYhvUGa+qIY00X2baaRXGEWnlgNekT8NTKw7AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"91e7857c01f2ae3760371e297459dac6a7ca8a39b80423f27e0234bdb7fc0e01","last_reissued_at":"2026-07-05T06:28:29.060666Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:28:29.060666Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Speciation in a MacArthur model predicts growth, stability and adaptation in ecosystems dynamics","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.bio-ph"],"primary_cat":"q-bio.PE","authors_text":"Christian H.S. Hamster, Elena Bellavere, Joshua A. Dijksman","submitted_at":"2018-03-01T16:36:51Z","abstract_excerpt":"Ecosystems dynamics is often considered as driven by a coupling of species' resource consumption and its population size dynamics. Such resource-population dynamics is captured by MacArthur-type models. One biologically relevant feature that would also need to be captured by such models is the introduction of new and different species. Speciation introduces a stochastic component in the otherwise deterministic MacArthur theory. We describe here how speciation can be implemented to yield a model that is consistent with current theory on equilibrium resource-consumer models, but also displays re"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.00487","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1803.00487/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1803.00487","created_at":"2026-07-05T06:28:29.060724+00:00"},{"alias_kind":"arxiv_version","alias_value":"1803.00487v3","created_at":"2026-07-05T06:28:29.060724+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.00487","created_at":"2026-07-05T06:28:29.060724+00:00"},{"alias_kind":"pith_short_12","alias_value":"SHTYK7AB6KXD","created_at":"2026-07-05T06:28:29.060724+00:00"},{"alias_kind":"pith_short_16","alias_value":"SHTYK7AB6KXDOYBX","created_at":"2026-07-05T06:28:29.060724+00:00"},{"alias_kind":"pith_short_8","alias_value":"SHTYK7AB","created_at":"2026-07-05T06:28:29.060724+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/SHTYK7AB6KXDOYBXDYUXIWO2Y2","json":"https://pith.science/pith/SHTYK7AB6KXDOYBXDYUXIWO2Y2.json","graph_json":"https://pith.science/api/pith-number/SHTYK7AB6KXDOYBXDYUXIWO2Y2/graph.json","events_json":"https://pith.science/api/pith-number/SHTYK7AB6KXDOYBXDYUXIWO2Y2/events.json","paper":"https://pith.science/paper/SHTYK7AB"},"agent_actions":{"view_html":"https://pith.science/pith/SHTYK7AB6KXDOYBXDYUXIWO2Y2","download_json":"https://pith.science/pith/SHTYK7AB6KXDOYBXDYUXIWO2Y2.json","view_paper":"https://pith.science/paper/SHTYK7AB","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1803.00487&json=true","fetch_graph":"https://pith.science/api/pith-number/SHTYK7AB6KXDOYBXDYUXIWO2Y2/graph.json","fetch_events":"https://pith.science/api/pith-number/SHTYK7AB6KXDOYBXDYUXIWO2Y2/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/SHTYK7AB6KXDOYBXDYUXIWO2Y2/action/timestamp_anchor","attest_storage":"https://pith.science/pith/SHTYK7AB6KXDOYBXDYUXIWO2Y2/action/storage_attestation","attest_author":"https://pith.science/pith/SHTYK7AB6KXDOYBXDYUXIWO2Y2/action/author_attestation","sign_citation":"https://pith.science/pith/SHTYK7AB6KXDOYBXDYUXIWO2Y2/action/citation_signature","submit_replication":"https://pith.science/pith/SHTYK7AB6KXDOYBXDYUXIWO2Y2/action/replication_record"}},"created_at":"2026-07-05T06:28:29.060724+00:00","updated_at":"2026-07-05T06:28:29.060724+00:00"}