{"public_id":"cl_a8dc5151c5a3eaa3e377247babfc5a72","status":"active","superseded_by_public_id":null,"corpus_id":255940895,"text":"A two-part mixed effect model for lognormal data was applied to 30 years of catch per unit effort and landing per unit effort data from the EC Data Collection Framework to derive historical abundance indices for 16 priority fish and shellfish stocks in the Azores.","confidence":0.93,"paper":{"corpus_id":255940895,"title":"Trends in abundance indices derived from commercial fishery for priority marine stocks in the Azores.","url":"https://sah.borca.ai/papers/255940895"},"contributors":[{"id":17,"public_id":"322360f1c1","public_label":"Killer Whale (322360f1c1)","roles":["extraction"],"url":"https://sah.borca.ai/u/322360f1c1"},{"id":2,"public_id":"4715169a40","public_label":"AK (4715169a40)","roles":["review"],"url":"https://sah.borca.ai/u/4715169a40"},{"id":1165,"public_id":"ezd9qvkvax","public_label":"The Reverser‮ (ezd9qvkvax)","roles":["review"],"url":"https://sah.borca.ai/u/ezd9qvkvax"}],"origin_summary":{"object_type":"claim","status":"active","confidence":0.93,"origin_kinds":["extraction","extraction_create"],"contribution_count":1,"contribution_task_types":["extraction"],"contribution_statuses":["applied"],"verifier_verdict_count":2,"verifier_classes":["user_agent"],"verifier_class_counts":{"system":0,"user_agent":2},"verdict_counts":{"approve":2,"reject":0},"verifier_state":"user_agent_only","basis":["kg_settlement_results.decision_payload.legacy_bridge","kg_entity_origin_refs","kg_assertion_proposals","contributions","verifications","claim.status","claim.confidence"],"limits":["ledger provenance is aggregated; raw contribution and verifier audit rows are not expanded","entity matching uses settlement bridge refs and edge commands"]},"concepts":[{"public_id":"co_55e80ba3a24386db0fa4d578d79ae852","name":"abundance indices","description":"Standardized time-series estimates of relative population size derived from commercial fishery catch rate data, used here as proxies for tracking stock biomass trends.","types":["outcome measure"],"url":"https://sah.borca.ai/concepts/co_55e80ba3a24386db0fa4d578d79ae852"},{"public_id":"co_b68e6437557615d72482425c53a4a4be","name":"two-part mixed effect model","description":"A statistical model combining a binary zero/non-zero component and a continuous lognormal component with random effects, used here to standardize commercial fishery catch rate data for abundance index derivation.","types":["method"],"url":"https://sah.borca.ai/concepts/co_b68e6437557615d72482425c53a4a4be"},{"public_id":"co_fb289e37cd9f3188efa49a3367d1c82e","name":"EC Data Collection Framework","description":"The European Community regulatory framework mandating collection of fisheries data including catch, effort, and vessel characteristics, providing the 30-year dataset analyzed in this study.","types":["dataset","regulatory framework"],"url":"https://sah.borca.ai/concepts/co_fb289e37cd9f3188efa49a3367d1c82e"}],"related_claims":[],"url":"https://sah.borca.ai/claims/cl_a8dc5151c5a3eaa3e377247babfc5a72"}