{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:6CIWPIHU2KORV2FDH7K6YUEKFN","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"c3a88837dc15936913f029a655ad157a49d65342d6bb9ff4328142087bba881f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2013-04-23T10:46:05Z","title_canon_sha256":"de04426bdd61c7f91947e914cd4eccd9bb8e2cd1509291ff47bf7784a804b097"},"schema_version":"1.0","source":{"id":"1304.6226","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.6226","created_at":"2026-05-18T03:13:12Z"},{"alias_kind":"arxiv_version","alias_value":"1304.6226v2","created_at":"2026-05-18T03:13:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.6226","created_at":"2026-05-18T03:13:12Z"},{"alias_kind":"pith_short_12","alias_value":"6CIWPIHU2KOR","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_16","alias_value":"6CIWPIHU2KORV2FD","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_8","alias_value":"6CIWPIHU","created_at":"2026-05-18T12:27:36Z"}],"graph_snapshots":[{"event_id":"sha256:33515e4a4a172b516c5ac4d285795c05fffb8db9b75d5bc899b0dd1b35e4e255","target":"graph","created_at":"2026-05-18T03:13:12Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We study a stochastic community model able to interpolate from a neutral regime to a niche partitioned regime upon varying a single parameter tuning the intensity of niche stabilization, namely the difference between intraspecific and interspecific competition. By means of a self-consistent approach, we obtain an analytical expression for the species abundance distribution, in excellent agreement with stochastic simulations of the model. In the neutral limit, the Fisher log-series is recovered, while upon increasing the stabilization strength the species abundance distribution develops a maxim","authors_text":"Massimo Cencini, Simone Pigolotti","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2013-04-23T10:46:05Z","title":"Species abundances and lifetimes: from neutral to niche-stabilized communities"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.6226","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:b224b7b42444de93d9263c3966804a78498c2ec8c316241a36f6ca6831e323a8","target":"record","created_at":"2026-05-18T03:13:12Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"c3a88837dc15936913f029a655ad157a49d65342d6bb9ff4328142087bba881f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2013-04-23T10:46:05Z","title_canon_sha256":"de04426bdd61c7f91947e914cd4eccd9bb8e2cd1509291ff47bf7784a804b097"},"schema_version":"1.0","source":{"id":"1304.6226","kind":"arxiv","version":2}},"canonical_sha256":"f09167a0f4d29d1ae8a33fd5ec508a2b4b7ec5d850d73091d4aeaea3c26c7acc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f09167a0f4d29d1ae8a33fd5ec508a2b4b7ec5d850d73091d4aeaea3c26c7acc","first_computed_at":"2026-05-18T03:13:12.523668Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:13:12.523668Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HdXa/Ib8J0U17so0hzZSYkOLyRCZTdzIwjgMQDx9qlKR/isZ7HEyvozWE3ctVFcIMIn8BnlHUjUb5wBTxzyYDA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:13:12.524400Z","signed_message":"canonical_sha256_bytes"},"source_id":"1304.6226","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b224b7b42444de93d9263c3966804a78498c2ec8c316241a36f6ca6831e323a8","sha256:33515e4a4a172b516c5ac4d285795c05fffb8db9b75d5bc899b0dd1b35e4e255"],"state_sha256":"186faffc5c775f0f3073c76109e9226b019d2141f1175bf215298a58de517ab3"}