High resolution fire and vegetation history of Garry oak ecosystems in British Columbia
Bibliographic record
Abstract
I used fossil pollen and macroscopic charcoal in sediments extracted from three lakes to investigate the effects of climate and human activity on fire regimes and vegetation of Garry oak ecosystems in British Columbia. Sediment records from Roe Lake and Quamichan Lake span the past 250 calendar years, while the Florence Lake record spans 560. Roe and Quamichan charcoal records exhibit similar fire patterns and correspond to other fire records in the Pacific Northwest, indicating climate-driven responses. After ca. 1870, European agriculture, logging, and fire suppression dominate the fire and vegetation history at Roe and Quamichan lakes. Variations in pollen abundance and species composition confirm forest clearance and exotic plant introductions. Florence Lake data also correspond well with regional climate, until ca. 1800. These results show that, up until the mid-1800s, fire and vegetation histories varied in response to climate; thereafter, cultural activities appear to have dominated disturbance regimes.
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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 | 0.001 | 0.002 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 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".