Increasing Coastal and Continental Shelf Water Temperatures Influence the Start of the Glass Eel Fishery and Recruitment Abundance for American Eels in Atlantic Coastal Nova Scotia
Bibliographic record
Abstract
Abstract The effect on fish life history of warming oceanic water temperatures is a modern concern. Warming coastal and continental shelf sea surface temperatures (SSTs) were examined for their effect on the arrival of American Eel Anguilla rostrata glass eels to coastal waters as represented by the start of commercial elver fisheries along the Atlantic coast of Nova Scotia, Canada. Elver fishery start dates were significantly earlier for a group of three rivers along the coast southwest of centrally located Halifax and for a northeastern group of two rivers. Between 1996 and 2020, fishery start dates became earlier by about 26 d for the southwestern river group and by about 34 d for the northeastern group. Progressively earlier starts to elver runs and associated commercial fisheries have implications for fisheries management when fixed fishing seasons become mismatched with run timing. Coastal and continental shelf SSTs were significantly higher for the southwestern river group than for the northeastern river group. Fishery start dates were significantly correlated with coastal and continental shelf SSTs only for the southwestern river group and not for the northeastern river group. The annual elver index for the East River, Chester, increased significantly between 1996 and 2018 and was significantly correlated with coastal and continental shelf SSTs, suggesting that increasing oceanic water temperatures influence glass eel recruitment. Elver relative condition had no significant effect on elver recruitment and was not affected by continental shelf SSTs.
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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 | 0.000 | 0.000 |
| 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 | 0.002 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.002 |
| 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 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".