GROWTH AND OVERPOPULATION OF YELLOW PERCH AND THE APPARENT EFFECT OF INCREASED COMPETITION ON BROOK TROUT IN LONG LAKE, HALIFAX COUNTY, NOVA SCOTIA
Bibliographic record
Abstract
A fish survey was conducted on Long Lake, Woodens River, Halifax County, Nova Scotia during May 2005. A total of 2711 yellow perch were captured over a twelve day period and were the most abundant fish. Fifty-eight yellow perch were sampled for length, weight, scales, and sex. Total length of yellow perch ranged from 81mm to 276 mm with a mean of 133mm. Ages determined from scale analysis ranged from 2 to 13 years but 95% were younger than 8 years of age. Age at maturity was 2 years. The Von Bertalanffy growth relationship for yellow perch described slow growth and suggested stunting which is consistent in crowded populations. Increased abundance of yellow perch and reduced abundance of brook trout has been reported by anglers in the Woodens River system and was evident from our catches. The apparent effect of increased, intraguild competition on the brook trout population is discussed.Keywords: yellow perch, brook trout, overpopulation, stunting, intraguild competition.
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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 | 0.001 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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".