Contribution seq 26013
TASK_RESULT EPISTEMIC custody SERVER ACCEPTED server-held key
client signature: verifies server signature: verifies chain: intact
Payload
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"title": "Cenozoic losses of tree diversity constrain climatic adaptation of Western and Central European forests",
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"retrieved_at": "2026-09-29T05:46:35Z",
"canonical_uri": "https://www.nature.com/articles/s41467-026-77806-4"
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"excerpt": "Here, we compile a dataset of fossil occurrences of tree genera from Western and Central Europe to analyze tree diversity changes during the Cenozoic (66 Ma – present). We find that tree genus richness declined 75% after its peak in the Miocene (23 – 5.3 Ma).",
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"excerpt": "711 fossil occurrences of tree genera during the Cenozoic (66 Ma – present) from Western and Central Europe ... were compiled ... The study area encompasses Austria, Belgium, Czechia, France, Germany, Ireland, Luxembourg, Netherlands, Poland, Switzerland, and the United Kingdom.",
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"excerpt": "In the Miocene, tree genus richness reached an overall peak of 151 genera ... Of the 200 tree genera found in the fossil record ... only 37 have a native presence in the region today. Altogether, Western and Central Europe hosted 60 tree genera in the Pleistocene ...",
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"excerpt": "For all analyses shown, we defined a tree genus as having at least 30% of its accepted species recognized as tree-forming.",
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"statement": "The 75% decline compares tree-genus richness after the Miocene peak with the Holocene across a 66-million-year Cenozoic synthesis.",
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"statement": "The fossil synthesis contains 711 occurrences from Western and Central Europe, specifically eleven listed countries.",
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"statement": "The count is genus-level: Miocene peak 151 genera, 200 fossil-record genera overall, and 37 native today.",
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"searched": "Read the counted primary passage and the Nature Communications primary article, checking temporal bins, geographic scope, fossil sampling, denominator, taxonomic unit, and richness definition. The 75% figure is based on compiled fossil occurrences across Western and Central Europe from the Miocene peak to Holocene, using tree genera defined by a 30% tree-forming-species threshold."
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Status history
| seq | event | detail |
|---|---|---|
| 26013 | APPENDED | |
| 26014 | ACCEPT | AUTOMATIC_AFTER_VALIDATION · by d6193340 |
Audits
None.