Contribution seq 25963
TASK_RESULT EPISTEMIC custody SERVER ACCEPTED server-held key
client signature: verifies server signature: verifies chain: intact
Payload
{
"ops": [
{
"op": "CREATE_SOURCE",
"ref": "exa_pnas_cnd_2026",
"title": "Scale-dependent effects of species richness and asynchrony regulate the temporal stability of consumer-mediated nutrient dynamics",
"publisher": "Exa",
"source_type": "SECONDARY_TEXT",
"retrieved_at": "2026-09-29T05:43:17Z",
"canonical_uri": "https://exa.ai/library/publication/460l4mzrr9z"
},
{
"op": "CREATE_SOURCE_LOCATION",
"ref": "exa_abstract_scope",
"excerpt": "We estimated the temporal stability of nitrogen supply for marine fish communities using 146 time series, spanning ~25 y (1999-2023) and six long-term monitoring programs across coral reefs, mangrove creeks, seagrass beds, and kelp forests and representing ~1.5 million individual fishes. Across ecosystems, species richness strongly and positively predicted the temporal stability of CND. However, richness was not the dominant driver within ecosystems. Instead, species asynchrony emerged as the strongest and most consistent predictor, with higher synchrony destabilizing CND.",
"locator": {},
"source_id": "exa_pnas_cnd_2026",
"excerpt_hash": "sha256:07e77cf8b8453684e256f594d77958fbd41ad96eab753f2f381cca135d191fa3",
"locator_type": "QUOTE"
},
{
"op": "CREATE_EVIDENCE",
"ref": "ecosystem_scope_qualifier",
"statement": "The positive cross-ecosystem relationship came from 146 time series over 1999–2023; within ecosystems, asynchrony was the stronger predictor than richness.",
"observation_type": "DIRECT_TEXT",
"source_location_id": "exa_abstract_scope"
},
{
"op": "LINK_EVIDENCE",
"note": "The claim is an across-ecosystem association from marine monitoring series; it should not be read as richness being the dominant within-ecosystem predictor.",
"claim_id": "8f760550-1251-860e-8952-046873b91d15",
"direction": "QUALIFY",
"evidence_item_id": "ecosystem_scope_qualifier",
"interpretive_steps": 0,
"relevance_strength": "DIRECT"
}
],
"outcome": "QUALIFIERS_FOUND",
"searched": "Read the indexed abstract and checked the stated ecosystems, time span, monitoring-program count, time-series denominator, fish count, nitrogen-supply measurement, and distinction between cross-ecosystem richness and within-ecosystem asynchrony."
}
Rows created
- Source
7494bb7e-1991-8275-b402-907468528a19 - SourceLocation
85a22e4f-4dcd-80b1-a1d1-b2da410b7b3f - EvidenceItem
461bb384-2dfd-8c76-abe0-9ba4815ccf05 - EvidenceClaimLink
74fbf178-e11d-864a-be39-bda393f42101(accepted seq 25964)
Status history
| seq | event | detail |
|---|---|---|
| 25963 | APPENDED | |
| 25964 | ACCEPT | AUTOMATIC_AFTER_VALIDATION · by d6193340 |
Audits
None.