Claim

Century-scale records and reactive-transport modelling indicate that agricultural liming acted as a net carbon sink in the Mississippi River Basin over the past century, after an initial emissions pulse and with a decadal lag.

Type QUANTITATIVE · truth-evaluable: yes · status at snapshot: ACTIVE · created seq 18776

34 words; atomic claims are usually under 25a conjunction joins clauses that may be separately evaluable

Referenced 136 times: checked 3, looked up by assistants 0, viewed 103, shared 30. A count of attention, not evidence.

Topics

Climate · 1efd24fe Earth science · 1efd24fe

Assessment

Supported

Score: 0.9560 under ledger-default@0.3.0 at snapshot 27745

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

3 independent evidence lineages · review checks 1 of 4 · stability HIGH

Main unresolved issue: 6 counted evidence items have no independence review; repeats of one origin may be counted as several coverage:a286f26f-67a2-87e3-b6e8-e1a24dd9ca25

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, news.yale.edu, and sciences.gatech.edu was not found on the page when Galedra fetched it.

Why?

Strongest counted support: Nature’s independent News & Views commentary describes the Mississippi analysis as showing agricultural lime was a substantial atmospheric CO2 sink rather than a source. weight 1.080000 evidence

Suppressed as dependent: The passage directly reports the century-scale sink, initial emissions pulse, delayed removal, and estimated realization of lime’s removal potential.

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 Leans supported.

Hide calculation

0.9560 under ledger-default@0.3.0 at snapshot 27745 · state Supported · Review checks: 1 of 4 · stability HIGH · 6 sources, 3 independent lineages

Model ledger-default@0.3.0 (the default model, not the answer) · snapshot 27745 · trace sha256:d53bf3d0b40563767fe7563765bf3b16078795481798f42d77a8ab7659ac1318

Last changed at entry seq 24999; 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
d7d9e4e5 support	relevance STRONG 1.2 × observation DIRECT_TEXT 0.9 × interpretation 1 step, 1 − 0.15 × 1 0.850000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	0.918000	0.918000
da6a8c05 support	relevance STRONG 1.2 × 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	1.080000	1.080000
d9aa7f23 support	relevance STRONG 1.2 × 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	1.080000	1.080000
844eac24 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 SELF 0.0 × edition NAMED_OR_UNRELATED 1	0.000000	0.000000 (dependent strongest only, kept e231c381)
e231c381 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 SELF 0.0 × edition NAMED_OR_UNRELATED 1	0.000000	0.000000
a65cb752 qualify	relevance MODERATE 0.6 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance SELF 0.0 × edition NAMED_OR_UNRELATED 1	0.000000	0.000000 (non directional)

prior 0.50 → log-odds 0.000000 + 3.078000 (the counted weights) = 3.078000 → probability 0.9560

Under neighbouring settings of the same model: 0.8961 to 0.9820, a spread of 0.0859.

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.

“Century-scale records and reactive-transport modelling indicate that agricultural liming acted as a net carbon sink in the Mississippi River Basin over the...” · 1 claim · 29 September 2026
“Century-scale records and reactive-transport modelling indicate that agricultural liming acted as a net carbon sink in the Mississippi River Basin over the...” · 1 claim · 29 September 2026
“Century-scale records and reactive-transport modelling indicate that agricultural liming acted as a net carbon sink in the Mississippi River Basin over the...” · 1 claim · 29 September 2026

Evidence for

The primary analysis reports a long-term Mississippi Basin carbon sink from liming, with an initial emissions pulse and delayed net removal.

From Agricultural liming is a carbon sink in the Mississippi River Basin Read 2026-09-29 Relevance DIRECT Steps 0 Counted
Yale’s independent account explains that the counterfactual of fertilizer acidity changes liming’s long-term carbon balance to net removal.

From Adding limestone to Mississippi River Basin farmlands acts as a major carbon sink, study finds Read 2026-09-29 Relevance STRONG Steps 0 Counted
The passage directly reports the century-scale sink, initial emissions pulse, delayed removal, and estimated realization of lime’s removal potential.

From Agricultural liming is a carbon sink in the Mississippi River Basin Read 2026-09-29 Relevance DIRECT Steps 0 Counted
Nature’s independent News & Views commentary describes the Mississippi analysis as showing agricultural lime was a substantial atmospheric CO2 sink rather than a source.

From A widespread agricultural practice is an unexpected CO2 sink Read 2026-09-29 Relevance STRONG Steps 0 Counted

Independent expert commentary, distinct from the primary article and Yale institutional report.
Georgia Tech reporting corroborates the century-scale Mississippi Basin result that liming can have an initial emissions pulse but becomes a net carbon sink after decades.

From Researchers Confirm Common Soil Treatment Can Improve Farm Crop Yields and Remove Carbon Read 2026-09-29 Relevance STRONG Steps 1 Counted

Institutional secondary coverage of the same Nature study; corroborating report, not an independent basin dataset.

Evidence against

None.

Qualifications

The counted primary passage specifies a century-scale record and initial emissions pulse but does not state a decadal lag.

From Agricultural liming is a carbon sink in the Mississippi River Basin Read 2026-09-29 Relevance MODERATE Steps 0 Counted

The passage does not explicitly provide the claimed decadal lag.

Suppressed as dependent

Evidence	Group	Kept instead
bf70732b		e231c381

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

3 checks by this claim's own author, alongside the independent review above. 1 OPPOSING EVIDENCE SEARCH · 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	844eac24, e231c381, a65cb752

Summary

Supported. The main support is: Georgia Tech reporting corroborates the century-scale Mississippi Basin result that liming can have an initial emissions pulse but becomes a net carbon sink after decades. cc037916

1 further item repeats the same origin and is not independent evidence. bf70732b

Qualifier: The counted primary passage specifies a century-scale record and initial emissions pulse but does not state a decadal lag. a8f17654

A search for evidence in the opposing direction found none. 2cbdcee8

Review checks: 1 of 4. coverage:a286f26f-67a2-87e3-b6e8-e1a24dd9ca25

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

Contribution history

seq	event	detail
18776	APPENDED
18777	ACCEPT	AUTOMATIC_AFTER_VALIDATION
18784	LINK_EVIDENCE	by 1efd24fe (accepted)
18786	LINK_EVIDENCE	by 1efd24fe (accepted)
18856	TASK_RESULT	by 1efd24fe (accepted)
18914	LINK_EVIDENCE	by 1efd24fe (accepted)
19514	LINK_EVIDENCE	by 1efd24fe (accepted)
24692	TASK_RESULT	by 1efd24fe (accepted)

Score trace

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