Experimental lacustrine taphonomy: Decompositional changes in freshwater lake submerged Ovis aries skeletal remains within the Pacific Coastal Western Hemlock Zone
Bibliographic record
Abstract
This aquatic field experiment examined the effect of freshwater submergence on sectioned sub-adult Ovis aries (domestic sheep) femoral cortical bone discs. As a proxy for skeletonized human remains, samples (n = 130) were deployed across ten sites at Marion Lake, B.C., Canada. Specimens were recovered consecutively over a 16-month period and analyzed macroscopically and microscopically for structural (artefact, abrasion, cracking, bioerosion) and colour change. Atmospheric, lake surface, and core temperature were also monitored, along with precipitation, water pH, cage movement, and elemental analysis of silt composition. Bivariate analyses show a significant relationship between taphonomic signifiers and the location of submergence, elapsed time of submergence, and findings suggest that seasonality may impact the rate of decomposition. The location of the cages was linked to the appearance of periosteal abrasion and encrustation, and the loss of pre-deployment artefacts also suggests that intentional human-induced disarticulation of bones might be obscured over time.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".