Stock composition of juvenile salmon taken by an abundant, pursuit-diving seabird in the coastal waters of British Columbia, Canada
Bibliographic record
Abstract
We determined the stock composition of juvenile salmon taken by a pursuit-diving seabird, the Rhinoceros Auklet ( Cerorhinca monocerata), on five breeding colonies in British Columbia in 2012–2014. Our goal was to test the hypothesis that these birds take salmon in proportion to their abundance, with specific focus on first, the biennial cycle of pink salmon; and second, the enormous out-migration of juvenile sockeye from BC's Fraser River in 2012. We obtained 772 meals in 11 colony-years of sampling, of which 198 (26%) included one or more salmon, and determined stock composition for 126 pink, 101 sockeye, and 113 chum. As expected, the biennial cycle of pink salmon was evident in the birds’ diets: individuals from Puget Sound were common on colonies in 2012 and 2014 but absent in 2013 and replaced by pinks from northerly stocks. Also as expected, Fraser River sockeye were unusually abundant in the birds’ diets in 2012. Our results show that these seabirds can respond to pulses of increased abundance of juvenile salmon, although they are not usually primary prey types.
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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 | 0.002 | 0.002 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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".