Mortality of Black Bears, Ursus americanus, associated with elevated train trestles
Bibliographic record
Abstract
Van Why, Kyle R., and Michael J. Chamberlain.2003.Mortality of Black Bears, Ursus americanus, associated with elevated train trestles.Canadian Field-Naturalist 117(1): 113-115.The Louisiana Black Bear (Ursus americanus luteolus), a threatened species in the United States, inhabits the Tensas and Atchafalaya River Basins of Louisiana.These basins contain three breeding populations, but dispersal among the populations is limited due to habitat fragmentation and a lack of corridors.Highways and railroads bisect the few available corridors, and mortalities occur as a result of collisions with vehicles.Waterways and flood control structures used as travel corridors by bears are crossed by road and rail bridges creating the potential for additional mortalities.We documented two mortalities associated with elevated railroad spans.Both occurred along the same span of track located within the Morganza Spillway in Pointe Coupee Parish, Louisiana, and both mortalities were a result of the bear falling from the span or being struck by a train while crossing the trestle.
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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 | 0.000 | 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 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".