{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:WAQHLJ5VI7WC7SPU5JIA35WBDF","short_pith_number":"pith:WAQHLJ5V","schema_version":"1.0","canonical_sha256":"b02075a7b547ec2fc9f4ea500df6c119618a0f83340bc884403fce9994ad6ccb","source":{"kind":"arxiv","id":"1607.04158","version":1},"attestation_state":"computed","paper":{"title":"Sheldon Spectrum and the Plankton Paradox: Two Sides of the Same Coin. A trait-based plankton size-spectrum model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.bio-ph"],"primary_cat":"q-bio.PE","authors_text":"Gustav W. Delius, Jos\\'e A. Cuesta, Richard Law","submitted_at":"2016-07-14T15:00:04Z","abstract_excerpt":"The Sheldon spectrum describes a remarkable regularity in aquatic ecosystems: the biomass density as a function of logarithmic body mass is approximately constant over many orders of magnitude. While size-spectrum models have explained this phenomenon for assemblages of multicellular organisms, this paper introduces a species-resolved size-spectrum model to explain the phenomenon in unicellular plankton. A Sheldon spectrum spanning the cell-size range of unicellular plankton necessarily consists of a large number of coexisting species covering a wide range of characteristic sizes. The coexiste"},"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":"1607.04158","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2016-07-14T15:00:04Z","cross_cats_sorted":["physics.bio-ph"],"title_canon_sha256":"0a1d41ef9a67593ea7ae0420fabe9c8416e59d37fa021b9008f74c705a7a8b83","abstract_canon_sha256":"0bb49d8dc50313ee88672140ebb722512ab5a425368316ab37004902f7437c20"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:43:43.564137Z","signature_b64":"/P34TlYuNtKkLlBLp0CA3L7H09WDXqLWqv3Xe+hNOwtt/KpQeWWUkOq13rHv/GDNahIvxLLgfcWC9fp66KLICw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b02075a7b547ec2fc9f4ea500df6c119618a0f83340bc884403fce9994ad6ccb","last_reissued_at":"2026-05-18T00:43:43.563625Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:43:43.563625Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Sheldon Spectrum and the Plankton Paradox: Two Sides of the Same Coin. A trait-based plankton size-spectrum model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.bio-ph"],"primary_cat":"q-bio.PE","authors_text":"Gustav W. Delius, Jos\\'e A. Cuesta, Richard Law","submitted_at":"2016-07-14T15:00:04Z","abstract_excerpt":"The Sheldon spectrum describes a remarkable regularity in aquatic ecosystems: the biomass density as a function of logarithmic body mass is approximately constant over many orders of magnitude. While size-spectrum models have explained this phenomenon for assemblages of multicellular organisms, this paper introduces a species-resolved size-spectrum model to explain the phenomenon in unicellular plankton. A Sheldon spectrum spanning the cell-size range of unicellular plankton necessarily consists of a large number of coexisting species covering a wide range of characteristic sizes. The coexiste"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.04158","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":"1607.04158","created_at":"2026-05-18T00:43:43.563699+00:00"},{"alias_kind":"arxiv_version","alias_value":"1607.04158v1","created_at":"2026-05-18T00:43:43.563699+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.04158","created_at":"2026-05-18T00:43:43.563699+00:00"},{"alias_kind":"pith_short_12","alias_value":"WAQHLJ5VI7WC","created_at":"2026-05-18T12:30:48.956258+00:00"},{"alias_kind":"pith_short_16","alias_value":"WAQHLJ5VI7WC7SPU","created_at":"2026-05-18T12:30:48.956258+00:00"},{"alias_kind":"pith_short_8","alias_value":"WAQHLJ5V","created_at":"2026-05-18T12:30:48.956258+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/WAQHLJ5VI7WC7SPU5JIA35WBDF","json":"https://pith.science/pith/WAQHLJ5VI7WC7SPU5JIA35WBDF.json","graph_json":"https://pith.science/api/pith-number/WAQHLJ5VI7WC7SPU5JIA35WBDF/graph.json","events_json":"https://pith.science/api/pith-number/WAQHLJ5VI7WC7SPU5JIA35WBDF/events.json","paper":"https://pith.science/paper/WAQHLJ5V"},"agent_actions":{"view_html":"https://pith.science/pith/WAQHLJ5VI7WC7SPU5JIA35WBDF","download_json":"https://pith.science/pith/WAQHLJ5VI7WC7SPU5JIA35WBDF.json","view_paper":"https://pith.science/paper/WAQHLJ5V","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1607.04158&json=true","fetch_graph":"https://pith.science/api/pith-number/WAQHLJ5VI7WC7SPU5JIA35WBDF/graph.json","fetch_events":"https://pith.science/api/pith-number/WAQHLJ5VI7WC7SPU5JIA35WBDF/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/WAQHLJ5VI7WC7SPU5JIA35WBDF/action/timestamp_anchor","attest_storage":"https://pith.science/pith/WAQHLJ5VI7WC7SPU5JIA35WBDF/action/storage_attestation","attest_author":"https://pith.science/pith/WAQHLJ5VI7WC7SPU5JIA35WBDF/action/author_attestation","sign_citation":"https://pith.science/pith/WAQHLJ5VI7WC7SPU5JIA35WBDF/action/citation_signature","submit_replication":"https://pith.science/pith/WAQHLJ5VI7WC7SPU5JIA35WBDF/action/replication_record"}},"created_at":"2026-05-18T00:43:43.563699+00:00","updated_at":"2026-05-18T00:43:43.563699+00:00"}