Nest and duckling survival of scaup at Minto Flats, Alaska
Bibliographic record
Abstract
To address the hypothesis that declines in recruitment were related to recent declines in abundance of lesser and greater scaup, I estimated variation in nest and duckling survival of these species at Minto Flats, Alaska (6450'N, 14850'W) during 2002-2003.I included nest survival data from two previous studies conducted during 1989-1993 in my analysis.Daily Survival Rate (DSR) of nests was variable within and among years and among habitats.Estimated nest survival of scaup ranged from 0.02 (95% Cl: 0.00 to 0.06) in 1992 to 0.61 (95% Cl: 0.50 to 0.74) in 1993.Predation was the primary apparent cause o f nest failure, and flooding of nests was an important secondary influence.DSR of ducklings varied between years and increased with age of the ducklings and body condition of the brood female.Duckling survival to 30 days was: 0.24 (95% Cl: 0.16 to 0.36) in 2002 and 0.03 (95% Cl: 0.00 to 0.19) in 2003.I conclude that high temporal variability in production of scaup at Minto Flats was likely related to annual variation in the risks o f predation and flooding and indicated that intermittent years o f high production could be particularly influential to this population.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 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".