Heavy metal concentrations in Arctic Foxes, Alopex lagopus, in the Prudhoe Bay Oil Field, Alaska
Bibliographic record
Abstract
Heavy metal concentrations in Arctic Foxes, Alopex lagopus, in the Prudhoe Bay Oil Field, Alaska.Canadian Field-Naturalist 117(1): 119-121.Liver and kidney tissue samples from 30 Arctic Foxes (Alopex lagopus) collected in the Prudhoe Bay Oil field in Alaska during 1994 were analyzed for barium, cadmium, chromium, mercury, nickel, selenium, and vanadium.Mean concentrations for all metais were higher in kidney than liver tissues.Mean liver concentrations (ug/g dry weight) for females and male foxes, respectively, were 0.12 and 0.09 for barium, 0.48 and 0.57 for cadmium, 1.03 and 1.04 for chromium, 1.10 and 0.54 for mercury, 0.17 and undetectable for nickel, 3.00 and 2.69 for selenium, and 0.05 and 0.06 for vanadium.Heavy metal concentrations in Arctic Fox liver and kidney tissues were low compared to non-industrial areas in Canada and the Norwegian Arctic.Arctic foxes in the Prudhoe Bay oil field have relatively low concentrations of heavy metals, although most (25 of 30) of the foxes analyzed were juveniles and concentrations may differ in adults.
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.001 | 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".