Eels at the Edge: Science, Status, and Conservation Concerns
Bibliographic record
Abstract
<em>Abstract.</em>—The eel ladder at the Moses-Saunders Dam at Cornwall, Ontario, provides the longest recruitment index of migrating juvenile American eels <em>Anguilla rostrata </em>in the species’ range, spanning 30 years from 1974 to 2003. Historically, mean size of eels ascending the ladder during the peak midsummer migration period was significantly smaller than mean size of eels in the total annual run. From the 1970s to 2000s, mean size during peak migration increased significantly (<EM>P </EM>< 0.0001), a 1.4- and 2.6-fold increase in length and weight, respectively. In 1988, length surpassed a transitional size of 400 mm and has remained above this level since 1993. A new index of passage of small eels (<400 mm) during peak migration was developed to better indicate young eel recruitment. From 1975–1983, the new index indicated a high percentage (61.2–93.8%) of small eels, but a decline started in the mid-1980s, and in 1988, for the first time fell below 50% of peak passage (46.6%). To date, the declining trend of small eel passage continues (1989–2002, x = 31.4 ± 12.7–95% CI). Not only has the number of eels ascending the ladder decreased significantly during peak migration (>3 orders of magnitude, 1982–2001), but there has been a coincident significant increase in the size of eels. Recruitment of small, young eels has essentially ceased.
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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 | 0.001 | 0.019 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.001 |
| 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; both teacher heads agree on what is shown here.
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".