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

Biology · 1efd24fe Climate · 1efd24fe

Assessment

Why?

Strongest counted support: The primary study reports the gradual-acidification response pattern. weight 1.800000 evidence

Suppressed as dependent: The quoted passage directly reports weaker phenotypic and genomic shifts under gradual acidification, aligning with natural ocean conditions.

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.

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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.

• “A long-term evolution experiment compared abrupt and gradual ocean acidification in the marine diatom Chaetoceros muelleri.” · 3 claims · 29 September 2026

Evidence for

• The primary study reports the gradual-acidification response pattern.

  From Abrupt pH changes overestimate the responses of Chaetoceros muelleri to ocean acidification Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  Primary comparative result.

• The quoted passage directly reports weaker phenotypic and genomic shifts under gradual acidification, aligning with natural ocean conditions.

  From Abrupt pH changes overestimate the responses of Chaetoceros muelleri to ocean acidification Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  The excerpt matches both weaker-shift and natural-condition components.

Evidence against

None.

Qualifications

• The experiment tested one marine diatom species over 1100 generations while comparing abrupt and gradual CO2 increases from 440 to 1000 ppm.

  From Abrupt pH changes overestimate the responses of Chaetoceros muelleri to ocean acidification Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  Limits organism, duration, exposure range, and abrupt-versus-gradual comparison.

• The study integrated genomic, physiological, stoichiometric, and Earth System Modeling measures of diatom responses.

  From Abrupt pH changes overestimate the responses of Chaetoceros muelleri to ocean acidification Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  Clarifies the response domains used.

• The article directly reports weaker phenotypic and genomic shifts under gradual acidification relative to natural ocean conditions.

  From Abrupt pH changes overestimate the responses of Chaetoceros muelleri to ocean acidification Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  Confirms the reported response pattern while retaining the experimental scope.

Suppressed as dependent

Evidence	Group	Kept instead
edd8c1c1		62fb2a79

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

From	Relationship	To
19386b55	NARROWS	40ae38bb

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	3e15e3b0, c68965d5, 1f7acc52, 62fb2a79, 78213d5b

Summary

Contribution history

seq	event	detail
19925	APPENDED
19926	ACCEPT	AUTOMATIC_AFTER_VALIDATION
19939	LINK_EVIDENCE	by 1efd24fe (accepted)
24507	TASK_RESULT	by 1efd24fe (accepted)
25532	TASK_RESULT	by 1efd24fe (accepted)