Investigating the Antiquity of Inter-Regional Contact between Southern Yukon and the Northern Northwest Coast through an Ancient DNA Analysis of Cryogenic Wooden Biofacts Recovered from Alpine Archaeological Sites in the Northwestern Subarctic
Bibliographic record
Abstract
The antiquity of contact between Eyak-Tlingit in Southeastern Alaska and Athabaskans in Southern Yukon is poorly understood. Archaeological evidence of inter-regional interaction is currently confined to the Late Period, although there is ethnographic evidence of more ancient networks. The discovery of a cryogenically preserved stick (willow [Salix sp.]), from the Kluane Icefields may represent the region’s earliest evidence (2430 ± 20 14C BP) of glacial travel. Ancient DNA was used in an attempt to assess the specimen’s origin based on a phylogeographic analysis of modern Salix distributed on either side of the Saint Elias Range. DNA could not be amplified from the target specimen, leading to an investigation of the viability of paleogenetics for wooden artifacts using biofacts from alpine ice patches in Southern Yukon. A considerable lack of plastid variability was observed in modern Salix ssp., although three loci were identified that may be amenable to phylogeographic applications.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".