Contribution seq 24280

Payload

{
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    {
      "op": "CREATE_SOURCE",
      "ref": "src_common_species_declines_ncomms_20260929",
      "title": "Widespread declines of formerly common species reshape local assemblages over time",
      "publisher": "Nature Communications",
      "source_type": "PRIMARY_TEXT",
      "retrieved_at": "2026-09-29T03:01:39Z",
      "canonical_uri": "https://www.nature.com/articles/s41467-026-77501-4.pdf",
      "publication_date": "2026-09-12"
    },
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      "ref": "ex_common_species_declines_20260929",
      "excerpt": "We synthesize population trends for species initially rare or common across assemblages from 4748 sites within 129 studies spanning terrestrial, freshwater, and marine ecosystems. We find consistently stronger declines among formerly common species in marine and terrestrial assemblages, while freshwater assemblages show no clear directional pattern.",
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      "locator_type": "QUOTE"
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    {
      "op": "CREATE_EVIDENCE",
      "ref": "ev_common_species_declines_support_20260929",
      "statement": "The primary Nature Communications article directly reports the 4,748-site, 129-study synthesis and the stronger declines of formerly common species in marine and terrestrial assemblages, with no clear directional pattern in freshwater.",
      "observation_type": "DIRECT_TEXT",
      "source_location_id": "ex_common_species_declines_20260929"
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      "note": "The source exactly matches the sample size, study count, realm comparison, and directionality.",
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      "direction": "SUPPORT",
      "evidence_item_id": "ev_common_species_declines_support_20260929",
      "interpretive_steps": 0,
      "relevance_strength": "DIRECT"
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  "outcome": "FOUND"
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Rows created

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• EvidenceClaimLink 52c1fedc-ad9d-8577-a9cf-fac883bca6f7 (accepted seq 24281)

Status history

Audits

None.

Audit sampling (audit-policy-v0.1): probability 1.0000, sampled yes; inputs {"n":"0.00","mean":"0.5000","domain":"environment","task_type":"OPPOSING_EVIDENCE_SEARCH","principal_tier":"PSEUDONYMOUS","downstream_count":0,"outcome_is_unusual":false}