Global and local ecological impacts of chloride-based road deicing salts
Bibliographic record
Abstract
Chloride-based road deicers are commonly used for winter road maintenance but can be detrimental in both terrestrial and aquatic environments.The objective of this thesis was to investigate the impacts of road salting both globally and locally in Halifax, Nova Scotia.A metaanalysis of the impacts of road salting across individual, community, and ecosystem levels found that road salt can have significant negative effects across ecological scales.Locally, fifteen wetlands across Halifax were tested to determine whether direct stormwater outflows impacted salinity and soil mineral concentrations more than runoff and identify whether these sites were salinized above recommended thresholds.Although all fifteen wetlands were above the threshold, direct stormwater outflows were not found to significantly impact wetland soil salinity, suggesting that other factors (such as urbanization) may be affecting the salinization of these wetlands.This thesis highlights the need for further research on road salting impacts in understudied ecosystems.
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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 | 0.001 |
| Science and technology studies | 0.001 | 0.002 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.001 |
| 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".