The timing of peatland initiation in east-central British Columbia: a first look
Bibliographic record
Abstract
"A pilot study at the Aleza Lake Research Forest (ALRF) in east-central interior British Columbia (BC) examined the timing of peatland initiation using accelerator radiocarbon dating of peat deposits. At the ALRF, Sphagnum bogs occupy numerous closed depressions in an undulating plain underlain by impervious, fine-textured glacial lake sediments. Four adjacent Sphagnum bogs differed greatly in depth, with maximum peat thicknesses ranging from 70 to >550 cm. The oldest peat (9,177 ± 55 ¹⁴C yr BP) occurred in a deposit less than 2 m thick, while a basal peat sample could not be obtained from the deepest basin examined. Two bogs with thinner deposits yielded younger basal peat ages (<4000 ¹⁴C yr BP). More recent peatland initiation in shallower depressions may have been triggered by moister regional climates after the mid-Holocene. Future studies of peatland carbon stocks and peatland history in central BC will need to consider this potential climate sensitivity and the spatial variability in peat thickness. Plant macrofossils and charcoal preserved in peat deposits could provide additional evidence for Holocene paleoenvironments in this region."
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.002 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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".