Suspended sediment concentration in relation to forestry operations in Catamaran Brook and its tributaries (Canada)
Bibliographic record
Abstract
Abstract The Catamaran Brook Habitat Research Project is a 15‐year investigation of river processes and potential impacts of forestry activities on Atlantic salmon ( Salmo salar ) and its freshwater lotic habitats. Suspended sediments have been sampled in Catamaran Brook and its tributaries from 1990 to 1997. Data on total event precipitation and hourly peak discharge were related to suspended sediment concentration (SSC) under different catchment conditions (dry vs. wet) and treatment (absence or occurrence of timber harvesting). Although SSC generally showed a good correlation to total event precipitation and hourly peak discharge, there was no clear evidence that forestry operations were an important factor within the main Catamaran Brook during the timber harvesting year and the year that followed. Such was not the case for SSC in small tributaries draining directly from cut blocks during logging. In fact, the highest concentrations of suspended sediment were measured in small tributaries draining cut blocks during timber harvesting (with a maximum SSC of 404 mg L −1 in Tributary 1). Within the main Catamaran Brook, a dilution effect rapidly decreased these values downstream of affected tributaries. Processes related to the transfer of sediment to the streams are discussed. Potential improvements in river management and operational timing with respect to the timing of harvesting activities as it relates to precipitation, discharge, catchment conditions (dry vs. wet), freezing/thawing, and salmon migration are also discussed. Copyright © 2006 John Wiley & Sons, Ltd.
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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 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| 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".