Hydrological impacts of mountain pine beetle infestation: potential for river channel changes
Bibliographic record
Abstract
Tree kill and salvage logging are profoundly changing the hydrology of mountain pine beetle-infested, snowmelt-dominated catchments. Baker Creek, located in the interior plateau of British Columbia, Canada, is in the heart of the infested region. This study relates observed and modelled changes in hydrology to geomorphic controls to predict the potential for channel change. Modelling using the Distributed-Hydrology-Soil-Vegetation-Model indicates that discharge is highly sensitive to tree kill and salvage logging, with increases of 65―100% possible. It was found that low-gradient reaches typical of the interior plateau are likely to be relatively insensitive to channel change, but will become significant sediment stores as sediment is mobilized elsewhere in the catchment. Higher gradient reaches, which typically occur where interior rivers incise to meet the Fraser River, are more susceptible to change. A geomorphic threshold classification was able to identify change channel thresholds. Salvage harvesting scenarios exceeding 40% cause some reaches to cross stability thresholds, with the potential for significant changes in channel morphology.
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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 | 0.000 | 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 | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| 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 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".