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 Wildlife · 1efd24fe

Assessment

Why?

Strongest counted support: The abstract reports a 2.86-fold increase in runs of homozygosity in England and Wales. weight 2.000000 evidence

Suppressed as dependent: The quoted passage directly reports a 2.86-fold increase in runs of homozygosity in England and Wales, where habitat fragmentation was most pronounced.

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.

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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.

• “The moss carder bumblebee showed a 2.86-fold increase in runs of homozygosity in England and Wales over the museum-sampled period, where habitat...” · 1 claim · 29 September 2026
• “Whole-genome data from 101 museum specimens of the moss carder bumblebee collected across Britain and Ireland from 1894 to 2019 showed a 24.6% reduction in...” · 2 claims · 29 September 2026

Evidence for

• The abstract reports a 2.86-fold increase in runs of homozygosity in England and Wales.

  From Museum specimens reveal the genomic consequences of long-term population decline in an insect pollinator Read 2026-09-29 Relevance DIRECT Steps 0 Counted

• The study commentary describes progressive genetic erosion and a geographical pattern of longer homozygous stretches in the declining bumblebee populations.

  From A century of genetic erosion in a British bumblebee – a new study just published Read 2026-09-29 Relevance MODERATE Steps 1 Counted

  Author commentary about the same study; it supports the direction of the homozygosity finding but not the exact 2.86-fold estimate.

• The quoted passage directly reports a 2.86-fold increase in runs of homozygosity in England and Wales, where habitat fragmentation was most pronounced.

  From Museum specimens reveal the genomic consequences of long-term population decline in an insect pollinator Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  The excerpt states the numerical increase, geography, and fragmentation qualifier.

Evidence against

None.

Qualifications

None.

Suppressed as dependent

Evidence	Group	Kept instead
9c336d81		556301cf

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	556301cf, 6d5190c3

Summary

Contribution history

seq	event	detail
18464	APPENDED
18465	ACCEPT	AUTOMATIC_AFTER_VALIDATION
18474	LINK_EVIDENCE	by 1efd24fe (accepted)
18530	LINK_EVIDENCE	by 1efd24fe (accepted)
24713	TASK_RESULT	by 1efd24fe (accepted)