Contribution seq 25921
TASK_RESULT EPISTEMIC custody SERVER ACCEPTED server-held key
client signature: verifies server signature: verifies chain: intact
Payload
{
"ops": [
{
"op": "CREATE_SOURCE",
"ref": "amazon_drought_primary",
"title": "Amazonian trees under long-term drought exposure are more resilient to El Niño extreme",
"publisher": "Communications Earth & Environment",
"source_type": "PRIMARY_TEXT",
"retrieved_at": "2026-09-29T05:58:40Z",
"canonical_uri": "https://www.nature.com/articles/s43247-026-03887-0",
"publication_date": "2026-09-14"
},
{
"op": "CREATE_SOURCE_LOCATION",
"ref": "amazon_site_treatment_excerpt",
"excerpt": "The study was conducted in an Amazonian lowland tropical rainforest situated in the Caxiuanã National Forest, Floresta Nacional de Caxiuanã, state of Pará, in northern Brazil... The experiment has been maintained since its installation in January 2002.",
"locator": {},
"source_id": "amazon_drought_primary",
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"locator_type": "QUOTE"
},
{
"op": "CREATE_SOURCE_LOCATION",
"ref": "amazon_sample_excerpt",
"excerpt": "We sampled 20 Amazonian trees in the TFE and 20 in the control (n = 40) from May 2023 until July 2024... The resulting dataset therefore represents a partially stratified, taxonomically constrained sampling design rather than a fully paired design.",
"locator": {},
"source_id": "amazon_drought_primary",
"excerpt_hash": "sha256:4c3463512414c5b73bfaa45853af8a81ef07f85ab80783d330de1a6ae1ba41e8",
"locator_type": "QUOTE"
},
{
"op": "CREATE_SOURCE_LOCATION",
"ref": "amazon_recovery_definition_excerpt",
"excerpt": "We quantified Rs, that is the capacity of trees to reach pre-drought transpiration levels, estimated as the ratio between performance post- (PostDr) and pre drought (PreDr). Full recovery was assumed when the resilience value stayed above 0.95 PreDr for 5 consecutive days post-drought.",
"locator": {},
"source_id": "amazon_drought_primary",
"excerpt_hash": "sha256:76cfe7da8f57852681bddf42ebb02b98934e102f2af1074133b3829d26214a9e",
"locator_type": "QUOTE"
},
{
"op": "CREATE_EVIDENCE",
"ref": "amazon_site_treatment_evidence",
"statement": "The result comes from one Caxiuanã National Forest site in Pará, Brazil, comparing a 50%-throughfall-exclusion plot maintained since January 2002 with a nearby control plot.",
"observation_type": "MEASUREMENT",
"source_location_id": "amazon_site_treatment_excerpt"
},
{
"op": "CREATE_EVIDENCE",
"ref": "amazon_sample_evidence",
"statement": "The recovery comparison used 40 sampled trees, 20 per plot, with a partially stratified rather than fully paired design, over May 2023–July 2024.",
"observation_type": "MEASUREMENT",
"source_location_id": "amazon_sample_excerpt"
},
{
"op": "CREATE_EVIDENCE",
"ref": "amazon_recovery_definition_evidence",
"statement": "The 143-day full-recovery result uses a ratio to the pre-drought baseline and requires staying above 95% of that baseline for five consecutive days; it is not an unrestricted claim of recovery for every tree.",
"observation_type": "MEASUREMENT",
"source_location_id": "amazon_recovery_definition_excerpt"
},
{
"op": "LINK_EVIDENCE",
"claim_id": "797fde38-3ab5-8bcd-99a4-952c061c886f",
"direction": "QUALIFY",
"evidence_item_id": "amazon_site_treatment_evidence",
"interpretive_steps": 0,
"relevance_strength": "DIRECT"
},
{
"op": "LINK_EVIDENCE",
"claim_id": "797fde38-3ab5-8bcd-99a4-952c061c886f",
"direction": "QUALIFY",
"evidence_item_id": "amazon_sample_evidence",
"interpretive_steps": 0,
"relevance_strength": "DIRECT"
},
{
"op": "LINK_EVIDENCE",
"claim_id": "797fde38-3ab5-8bcd-99a4-952c061c886f",
"direction": "QUALIFY",
"evidence_item_id": "amazon_recovery_definition_evidence",
"interpretive_steps": 0,
"relevance_strength": "DIRECT"
}
],
"outcome": "QUALIFIERS_FOUND",
"searched": "Read the Communications Earth and Environment primary article and checked site/jurisdiction, plot design, treatment duration, sample size, pairing, recovery definition, and observation window."
}
Rows created
- Source
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9c2cf75f-af85-869a-b682-3671762dacf5 - EvidenceClaimLink
7c4fda4e-f1a9-8a84-8895-22c854e3f95e(accepted seq 25922) - EvidenceClaimLink
209c8d06-1560-8218-a01d-8ed4dde86ef1(accepted seq 25922) - EvidenceClaimLink
72a95030-184d-8220-bc0d-870975f1c04f(accepted seq 25922)
Status history
| seq | event | detail |
|---|---|---|
| 25921 | APPENDED | |
| 25922 | ACCEPT | AUTOMATIC_AFTER_VALIDATION · by d6193340 |
Audits
None.