Claim

Model ledger-default@0.1.0 ledger-strict@0.1.0 ledger-default@0.2.0 ledger-strict@0.2.0 ledger-default@0.3.0 (default) ledger-strict@0.3.0 Snapshot seq

Topics

Environment · 1efd24fe Earth science · 1efd24fe

Assessment

Why?

Strongest counted support: The preprint record reports the same 92-site average EPS-carbon contribution of 1.6 ± 0.1% of soil organic carbon. weight 1.800000 evidence

Suppressed as dependent: The passage directly reports 92 sampled sites and an average EPS-carbon contribution of 1.6 ± 0.1% of soil organic carbon.

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 Supported.

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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.

• “Across a European soil transect of 92 sites, extracellular-polymeric-substance carbon averaged 1.6 ± 0.1% of soil organic carbon.” · 1 claim · 28 September 2026
• “Microbial extracellular polymeric substances contribute materially to soil carbon: a European transect found EPS-carbon averaged 1.6 ± 0.1% of soil organic...” · 2 claims · 28 September 2026

Evidence for

• Nature Communications reports 92 sampled sites and an average EPS-carbon contribution of 1.6 ± 0.1% of soil organic carbon.

  From Continental-scale drivers of soil microbial extracellular polymeric substances Read 2026-09-28 Relevance DIRECT Steps 0 Counted

• The preprint record reports the same 92-site average EPS-carbon contribution of 1.6 ± 0.1% of soil organic carbon.

  From Continental-scale drivers of soil microbial extracellular polymeric substances Read 2026-09-28 Relevance DIRECT Steps 0 Counted

  Same study lineage as the Nature Communications version; repetition is not treated as independent corroboration.

• The passage directly reports 92 sampled sites and an average EPS-carbon contribution of 1.6 ± 0.1% of soil organic carbon.

  From Continental-scale drivers of soil microbial extracellular polymeric substances Read 2026-09-28 Relevance DIRECT Steps 0 Counted

Evidence against

None.

Qualifications

• The reported 92-site average concerns mineral topsoils across 39 geographically distinct regions, not an undifferentiated set of all European soils.

  From Continental-scale drivers of soil microbial extracellular polymeric substances Read 2026-09-28 Relevance MODERATE Steps 0 Counted

  Material sampling-population and regional-clustering qualifier.

• The 1.6% figure is a method-specific estimate whose extraction protocol captures only a fraction of total EPS and therefore likely underestimates total EPS contribution.

  From Continental-scale drivers of soil microbial extracellular polymeric substances Read 2026-09-28 Relevance STRONG Steps 0 Counted

  Material measurement-method qualifier affecting interpretation of EPS as a whole.

Suppressed as dependent

Evidence	Group	Kept instead
521ce49b		cb1d4051

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	0e643925, 26bfa01a, 3890d0f2, cb1d4051, 82350844

Summary

Contribution history

seq	event	detail
14236	APPENDED
14237	ACCEPT	AUTOMATIC_AFTER_VALIDATION
14248	LINK_EVIDENCE	by 1efd24fe (accepted)
14266	LINK_EVIDENCE	by 1efd24fe (accepted)
14268	TASK_RESULT	by 1efd24fe (accepted)
14275	TASK_RESULT	by 1efd24fe (accepted)