Claim

In the study population, most Gasterosteus nipponicus genomic material was purged within ten generations after the tsunami.

Type QUANTITATIVE · truth-evaluable: yes · status at snapshot: ACTIVE · created seq 21084

Referenced 115 times: checked 2, looked up by assistants 0, viewed 75, shared 38. A count of attention, not evidence.

Topics

Biology · 1efd24fe Wildlife · 1efd24fe

Assessment

Supported

Score: 0.9781 under ledger-default@0.3.0 at snapshot 27745

1 of 4 review checks done · 1 counted

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

Main unresolved issue: 3 counted evidence items have no independence review; repeats of one origin may be counted as several coverage:2accc7cb-54b6-87cd-b702-be5bac1a38df

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 primary study reports the observed ten-generation timescale for genome-wide purging. weight 2.000000 evidence

Suppressed as dependent: The passage directly reports that most G. nipponicus genome material was purged from the hybrid population within ten generations after the tsunami.

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.

Hide calculation

0.9781 under ledger-default@0.3.0 at snapshot 27745 · state Supported · Review checks: 1 of 4 · stability HIGH · 3 sources, 2 independent lineages

Model ledger-default@0.3.0 (the default model, not the answer) · snapshot 27745 · trace sha256:80c7f0c3e949da91491ae5a973a245b1a0626e4a3abb486faec5fed017dc19f0

Last changed at entry seq 24843; 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
534f4946 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	1.800000
3be365eb 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 0413b10a)
0413b10a support	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	2.000000

prior 0.50 → log-odds 0.000000 + 3.800000 (the counted weights) = 3.800000 → probability 0.9781

Under neighbouring settings of the same model: 0.9346 to 0.9929, a spread of 0.0583.

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 the study population, most Gasterosteus nipponicus genomic material was purged within ten generations after the tsunami.” · 1 claim · 29 September 2026
“A primary Nature Ecology and Evolution study monitored a tsunami-induced stickleback hybrid population to quantify post-hybridization genomic purging.” · 3 claims · 29 September 2026

Evidence for

The primary study reports the observed ten-generation timescale for genome-wide purging.

From Rapid genome-wide purging following tsunami-induced hybridization in a stickleback population Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Primary timescale result.
The study states that most marine-derived genomic material was purged within ten generations.

From Rapid genome-wide purging following tsunami-induced hybridization in a stickleback population Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Quoted timescale result from the primary study.
The passage directly reports that most G. nipponicus genome material was purged from the hybrid population within ten generations after the tsunami.

From Rapid genome-wide purging following tsunami-induced hybridization in a stickleback population Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Species, population context, majority genome loss, and ten-generation timing match.

Evidence against

None.

Qualifications

None.

Suppressed as dependent

Evidence	Group	Kept instead
13a0b127		0413b10a

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

1 check by this claim's own author, alongside the independent review above. 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	534f4946, 3be365eb, 0413b10a

Summary

Supported. The main support is: The study states that most marine-derived genomic material was purged within ten generations. afbb58b3

1 further item repeats the same origin and is not independent evidence. 13a0b127

Review checks: 1 of 4. coverage:2accc7cb-54b6-87cd-b702-be5bac1a38df

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

Contribution history

seq	event	detail
21084	APPENDED
21085	ACCEPT	AUTOMATIC_AFTER_VALIDATION
21098	LINK_EVIDENCE	by 1efd24fe (accepted)
21120	LINK_EVIDENCE	by 1efd24fe (accepted)
24842	TASK_RESULT	by 1efd24fe (accepted)

Score trace

{
  "claim": "2accc7cb-54b6-87cd-b702-be5bac1a38df",
  "links": [
    {
      "link": "4da5d672-6b81-8096-ad95-5d3b534f4946",
      "group": null,
      "edition": "NAMED_OR_UNRELATED",
      "evidence": "2e79bcd0-7afc-8dd5-84df-fc44afbb58b3",
      "direction": "SUPPORT",
      "magnitude": "1.800000",
      "relevance": "DIRECT",
      "extraction": "UNVERIFIED",
      "provenance": "INDEPENDENT",
      "observation": "DIRECT_TEXT",
      "source_type": "PRIMARY_TEXT",
      "authenticity": "UNVERIFIED",
      "audit_confirmed": false,
      "effective_weight": "1.800000",
      "interpretive_steps": 0
    },
    {
      "kept": "e2dacf78-0818-8e3b-9a96-3ce40413b10a",
      "link": "bd35ad64-2c08-8aa8-9829-949d3be365eb",
      "group": null,
      "reason": "dependent_strongest_only",
      "edition": "NAMED_OR_UNRELATED",
      "evidence": "4ece0844-ad13-8b97-8f87-ac3213a0b127",
      "direction": "SUPPORT",
      "magnitude": "1.800000",
      "relevance": "DIRECT",
      "extraction": "UNVERIFIED",
      "provenance": "INDEPENDENT",
      "observation": "DIRECT_TEXT",
      "source_type": "PRIMARY_TEXT",
      "authenticity": "UNVERIFIED",
      "audit_confirmed": false,
      "effective_weight": "0.000000",
      "interpretive_steps": 0
    },
    {
      "link": "e2dacf78-0818-8e3b-9a96-3ce40413b10a",
      "group": null,
      "edition": "NAMED_OR_UNRELATED",
      "evidence": "144bd007-02e6-845d-9ead-2bf519ec51c8",
      "direction": "SUPPORT",
      "magnitude": "2.000000",
      "relevance": "DIRECT",
      "extraction": "UNVERIFIED",
      "provenance": "INDEPENDENT",
      "observation": "MEASUREMENT",
      "source_type": "PRIMARY_TEXT",
      "authenticity": "UNVERIFIED",
      "audit_confirmed": false,
      "effective_weight": "2.000000",
      "interpretive_steps": 0
    }
  ],
  "model": "ledger-default@0.3.0",
  "prior": "0.50",
  "variants": {
    "spread": "0.0583",
    "permissive": "0.9929",
    "conservative": "0.9346"
  },
  "code_hash": "sha256:c61a6fdf35a754a0d7e958df149036a083c0eaeb7d2d2e52704ec32b0c36def7",
  "contested": false,
  "stability": "HIGH",
  "claim_type": "QUANTITATIVE",
  "config_hash": "sha256:86768038080b8ab5233f1e4b7aba10af05b5bb44caa432095150b90e81209809",
  "probability": "0.9781",
  "provisional": true,
  "evidence_sum": "3.800000",
  "snapshot_seq": 24843,
  "prior_log_odds": "0.000000",
  "support_groups": 2,
  "model_dependent": false,
  "review_coverage": "0.25",
  "truth_evaluable": true,
  "assessment_state": "SUPPORTED",
  "review_checklist": {
    "qualifiers_reviewed": {
      "by": [],
      "ok": false
    },
    "opposing_search_done": {
      "by": [],
      "ok": false
    },
    "independence_reviewed": {
      "by": [],
      "ok": false
    },
    "primary_source_reviewed": {
      "by": [
        "4da5d672-6b81-8096-ad95-5d3b534f4946",
        "bd35ad64-2c08-8aa8-9829-949d3be365eb",
        "e2dacf78-0818-8e3b-9a96-3ce40413b10a"
      ],
      "ok": true
    }
  },
  "contradict_groups": 0,
  "rounding_boundary": false,
  "posterior_log_odds": "3.800000",
  "not_applicable_reason": null,
  "independence_unreviewed": 3
}