{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:IAAGNZUIP5HUBOYAK7PZNJ5UWW","short_pith_number":"pith:IAAGNZUI","schema_version":"1.0","canonical_sha256":"400066e6887f4f40bb0057df96a7b4b5bafd4a79852ad1add86a1ea6f06da260","source":{"kind":"arxiv","id":"1208.1560","version":1},"attestation_state":"computed","paper":{"title":"Common Patterns of Energy Flow and Biomass Distribution on Weighted Food Webs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.bio-ph"],"primary_cat":"q-bio.PE","authors_text":"Jiang Zhang, Yuanjing Feng","submitted_at":"2012-08-08T01:25:39Z","abstract_excerpt":"Weights of edges and nodes on food webs which are available from the empirical data hide much information about energy flows and biomass distributions in ecosystem. We define a set of variables related to weights for each species $i$, including the throughflow $T_i$, the total biomass $X_i$, and the dissipated flow $D_i$ (output to the environment) to uncover the following common patterns in 19 empirical weighted food webs: (1) DGBD distributions (Discrete version of a Generalized Beta Distribution), a kind of deformed Zipf's law, of energy flow and storage biomass; (2) The allometric scaling "},"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":"1208.1560","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2012-08-08T01:25:39Z","cross_cats_sorted":["physics.bio-ph"],"title_canon_sha256":"ba56c98943d4e21fb4f7ca50591bd1ecc044034bd67baa9577c8c524a1541090","abstract_canon_sha256":"6036b18694b71493bf1d033faf7b9f50bd8887c11c23e278dd9930d2743f1fcc"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:49:11.216244Z","signature_b64":"Yk2j9VGE7lUJNrHZtoq2ydKwMiUIrwgQGRnuuKA4RA9zhxe5TtaBGNsbLAbNju04U2thJxrlvvWMU9/yh0+FBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"400066e6887f4f40bb0057df96a7b4b5bafd4a79852ad1add86a1ea6f06da260","last_reissued_at":"2026-05-18T03:49:11.215329Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:49:11.215329Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Common Patterns of Energy Flow and Biomass Distribution on Weighted Food Webs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.bio-ph"],"primary_cat":"q-bio.PE","authors_text":"Jiang Zhang, Yuanjing Feng","submitted_at":"2012-08-08T01:25:39Z","abstract_excerpt":"Weights of edges and nodes on food webs which are available from the empirical data hide much information about energy flows and biomass distributions in ecosystem. We define a set of variables related to weights for each species $i$, including the throughflow $T_i$, the total biomass $X_i$, and the dissipated flow $D_i$ (output to the environment) to uncover the following common patterns in 19 empirical weighted food webs: (1) DGBD distributions (Discrete version of a Generalized Beta Distribution), a kind of deformed Zipf's law, of energy flow and storage biomass; (2) The allometric scaling "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.1560","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"1208.1560","created_at":"2026-05-18T03:49:11.215516+00:00"},{"alias_kind":"arxiv_version","alias_value":"1208.1560v1","created_at":"2026-05-18T03:49:11.215516+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.1560","created_at":"2026-05-18T03:49:11.215516+00:00"},{"alias_kind":"pith_short_12","alias_value":"IAAGNZUIP5HU","created_at":"2026-05-18T12:27:09.501522+00:00"},{"alias_kind":"pith_short_16","alias_value":"IAAGNZUIP5HUBOYA","created_at":"2026-05-18T12:27:09.501522+00:00"},{"alias_kind":"pith_short_8","alias_value":"IAAGNZUI","created_at":"2026-05-18T12:27:09.501522+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/IAAGNZUIP5HUBOYAK7PZNJ5UWW","json":"https://pith.science/pith/IAAGNZUIP5HUBOYAK7PZNJ5UWW.json","graph_json":"https://pith.science/api/pith-number/IAAGNZUIP5HUBOYAK7PZNJ5UWW/graph.json","events_json":"https://pith.science/api/pith-number/IAAGNZUIP5HUBOYAK7PZNJ5UWW/events.json","paper":"https://pith.science/paper/IAAGNZUI"},"agent_actions":{"view_html":"https://pith.science/pith/IAAGNZUIP5HUBOYAK7PZNJ5UWW","download_json":"https://pith.science/pith/IAAGNZUIP5HUBOYAK7PZNJ5UWW.json","view_paper":"https://pith.science/paper/IAAGNZUI","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1208.1560&json=true","fetch_graph":"https://pith.science/api/pith-number/IAAGNZUIP5HUBOYAK7PZNJ5UWW/graph.json","fetch_events":"https://pith.science/api/pith-number/IAAGNZUIP5HUBOYAK7PZNJ5UWW/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/IAAGNZUIP5HUBOYAK7PZNJ5UWW/action/timestamp_anchor","attest_storage":"https://pith.science/pith/IAAGNZUIP5HUBOYAK7PZNJ5UWW/action/storage_attestation","attest_author":"https://pith.science/pith/IAAGNZUIP5HUBOYAK7PZNJ5UWW/action/author_attestation","sign_citation":"https://pith.science/pith/IAAGNZUIP5HUBOYAK7PZNJ5UWW/action/citation_signature","submit_replication":"https://pith.science/pith/IAAGNZUIP5HUBOYAK7PZNJ5UWW/action/replication_record"}},"created_at":"2026-05-18T03:49:11.215516+00:00","updated_at":"2026-05-18T03:49:11.215516+00:00"}