Claim

In an 11.5-hectare, four-year Welsh reforestation field trial, crushed silicate rock increased aboveground carbon stocks by 27% in broadleaf stands but not significantly in spruce, while soil inoculation effects varied by tree species and diminished over time.

Type QUANTITATIVE · truth-evaluable: yes · status at snapshot: ACTIVE · created seq 19544

37 words; atomic claims are usually under 25a conjunction joins clauses that may be separately evaluablea comma-separated series may list several propositions

Referenced 94 times: checked 1, looked up by assistants 0, viewed 69, shared 24. A count of attention, not evidence.

Topics

Climate · 1efd24fe Environment · 1efd24fe

Assessment

Supported

Score: 0.8581 under ledger-default@0.3.0 at snapshot 27745

2 of 4 review checks done · 1 counted · 1 by the author only

1 independent evidence lineage · review checks 1 of 4 · stability MEDIUM

Main unresolved issue: 4 counted evidence items have no independence review; repeats of one origin may be counted as several coverage:629a0674-98e0-8409-b64b-a1f243474ce5

Not yet independently audited.Evidence reviewed so far supports this claim, but only 1 of 4 review checks has been done.A quoted passage from nature.com was not found on the page when Galedra fetched it.

Why?

Strongest counted support: The abstract directly reports the field-trial scale, 6400 monitored trees, broadleaf-specific 27% carbon-stock increase, and variable diminishing inoculation effects. weight 1.800000 evidence

Suppressed as dependent: The passage directly reports the field-trial scale, 6400 trees, broadleaf-specific carbon-stock increase, and variable diminishing soil-inoculation effects.

Review gaps: qualifiers reviewed, opposing search done, independence reviewed

What would most change this: One independent, direct measurement that contradicts this claim would move it from Supported to Unresolved.

Hide calculation

0.8581 under ledger-default@0.3.0 at snapshot 27745 · state Supported · Review checks: 1 of 4 · stability MEDIUM · 4 sources, 1 independent lineage

Model ledger-default@0.3.0 (the default model, not the answer) · snapshot 27745 · trace sha256:27708b2ff4bf4ed7bb87a23007f6e93356a07fa2bc41d651da1138e728c01d88

Last changed at entry seq 25497; nothing logged since has borne on this claim.

How the number was reached

Each counted link is weighed by multiplying the factors the model declares; a factor it does not declare is not shown. Every factor name below links to what that number means.

Link	Working	Weight	Counted as
4fe05471 qualify	relevance DIRECT 2.0 × observation MEASUREMENT 1.0 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	2.000000	0.000000 (non directional)
214e6b29 support	relevance DIRECT 2.0 × observation DATASET_RESULT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	1.800000	1.800000
a104370b support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	1.800000	0.000000 (dependent strongest only, kept 214e6b29)
dcebc14f qualify	relevance DIRECT 2.0 × observation MEASUREMENT 1.0 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	2.000000	0.000000 (non directional)

prior 0.50 → log-odds 0.000000 + 1.800000 (the counted weights) = 1.800000 → probability 0.8581

Under neighbouring settings of the same model: 0.7790 to 0.9121, a spread of 0.1331.

Half-even rounding, six places for weights and four for the probability. The same inputs under the same model reproduce this exactly; that is what the trace hash above is for. How a score is worked out explains every factor, why it is there, and what the model sets it to.

Your view

Registered views

Nobody has registered a view yet.

Registered views are personal belief, not evidence: they never change Galedra's assessment. Affiliations are self-declared and shown only for groups of 5 or more.

Checked as part of

Statements this claim was broken out of. The claim is scored on its own; a statement's reading only counts its claims.

“In an 11.5-hectare, four-year Welsh reforestation field trial, crushed silicate rock increased aboveground carbon stocks by 27% in broadleaf stands but not...” · 1 claim · 29 September 2026

Evidence for

The abstract directly reports the field-trial scale, 6400 monitored trees, broadleaf-specific 27% carbon-stock increase, and variable diminishing inoculation effects.

From Microbiome manipulation and enhanced weathering influence tree growth in reforestation Read 2026-09-29 Relevance DIRECT Steps 0 Counted
The passage directly reports the field-trial scale, 6400 trees, broadleaf-specific carbon-stock increase, and variable diminishing soil-inoculation effects.

From Microbiome manipulation and enhanced weathering influence tree growth in reforestation Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Evidence against

None.

Qualifications

The 27% value is a plot-level aboveground-tree-carbon result for broadleaf stands in a 72-plot Welsh field trial, not a species-general or spruce result.

From Microbiome manipulation and enhanced weathering influence tree growth in reforestation Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Defines the tree, plot, species, time, and aboveground-stock scope.
A broader ecosystem carbon accounting from the same four-year site reported that soil CO2 efflux could outweigh aboveground gains, with belowground plant biomass unmeasured; therefore aboveground stock gains should not be translated directly into net ecosystem removal.

From Ecosystem responses determine the effectiveness of enhanced rock weathering for climate mitigation Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Qualifies the carbon-accounting translation from aboveground stocks to whole-ecosystem net removal.

Suppressed as dependent

Evidence	Group	Kept instead
6fbd8575		214e6b29

Inferences

Concluded from

None.

Used as a premise in

None.

An inference is interpretation, not evidence: it never changes the assessment of its conclusion. Each premise is a claim with its own evidence.

Threads

None. Threads are for disagreements about how a determination was made — a statement whose figures are not in the passage it rests on, two sources that may share an origin. Something about the world belongs in the evidence above.

Claim edges

None. Edges are stored and displayed; v0.1 does not propagate probability across them.

Review checklist

Review checks: 1 of 4

2 checks by this claim's own author, alongside the independent review above. 1 QUALIFIER CHECK · 1 EVIDENCE VERIFICATION. A check by the person who recorded a claim does not raise its review coverage.

Check	Done	By
qualifiers reviewed	no
opposing search done	no
independence reviewed	no
primary source reviewed	yes	4fe05471, 214e6b29, a104370b, dcebc14f

Summary

Supported. The main support is: The abstract directly reports the field-trial scale, 6400 monitored trees, broadleaf-specific 27% carbon-stock increase, and variable diminishing inoculation effects. b84d6b0a

1 further item repeats the same origin and is not independent evidence. 6fbd8575

Qualifier: A broader ecosystem carbon accounting from the same four-year site reported that soil CO2 efflux could outweigh aboveground gains, with belowground plant biomass unmeasured; therefore aboveground stock gains should not be translated directly into net ecosystem removal. 9f90a102

Qualifier: The 27% value is a plot-level aboveground-tree-carbon result for broadleaf stands in a 72-plot Welsh field trial, not a species-general or spruce result. 656a916a

Review checks: 1 of 4. coverage:629a0674-98e0-8409-b64b-a1f243474ce5

Generated by stub-v0.1; every sentence cites graph ids.

Contribution history

seq	event	detail
19544	APPENDED
19545	ACCEPT	AUTOMATIC_AFTER_VALIDATION
19550	LINK_EVIDENCE	by 1efd24fe (accepted)
19566	TASK_RESULT	by 1efd24fe (accepted)
25496	TASK_RESULT	by 1efd24fe (accepted)

Score trace

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    {
      "kept": "2f7d21e4-0ecc-8554-8a02-0cb1214e6b29",
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      "group": null,
      "reason": "dependent_strongest_only",
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      "link": "d3aa8b1f-983a-8f61-80f6-50eadcebc14f",
      "group": null,
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  "model": "ledger-default@0.3.0",
  "prior": "0.50",
  "variants": {
    "spread": "0.1331",
    "permissive": "0.9121",
    "conservative": "0.7790"
  },
  "code_hash": "sha256:c61a6fdf35a754a0d7e958df149036a083c0eaeb7d2d2e52704ec32b0c36def7",
  "contested": false,
  "stability": "MEDIUM",
  "claim_type": "QUANTITATIVE",
  "config_hash": "sha256:86768038080b8ab5233f1e4b7aba10af05b5bb44caa432095150b90e81209809",
  "probability": "0.8581",
  "provisional": true,
  "evidence_sum": "1.800000",
  "snapshot_seq": 25497,
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  "support_groups": 1,
  "model_dependent": false,
  "review_coverage": "0.25",
  "truth_evaluable": true,
  "assessment_state": "SUPPORTED",
  "review_checklist": {
    "qualifiers_reviewed": {
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    },
    "opposing_search_done": {
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    "independence_reviewed": {
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      "ok": false
    },
    "primary_source_reviewed": {
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      "ok": true
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  "contradict_groups": 0,
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