The Role of Cod in the Ecosystem
Bibliographic record
Abstract
To help us explore the role of cod in the ecosystem, we reviewed biological interactions between cod and its prey, predators and competitors within six ecosystems.These six examples are from a broad geographic range: three are cod-capelin (Mallotus villosus) systems toward cod's northern limit across the top of the Atlantic (Barents Sea, Iceland, and Newfoundland-Labrador), two are more diverse systems toward the southern end of the species' range on either side of the Atlantic (North Sea and Georges Bank-Gulf of Maine), and one is a species-poor system with an unusual physical and biotic environment (Baltic Sea).We then attempted a synthesis of the role of cod in these and other ecosystems and speculate on how the role of cod might change in response to a variety of influences, particularly climate change.Our review indicates similarities in feeding across the ecosystems, with cod prey, predators and competitors functionally similar in all six ecosystems.Conversely, our review indicates different magnitudes of the role of cod in an ecosystem, with subsequently different effects of this role on cod populations, on cod prey populations, and on cod predator populations.Due to the direct effects of fishing on cod, it also appears that the ecological role of cod is diminished relative to historical roles in many cod ecosystems.What remains unclear is how additional climate variability will alter cod stocks, and thus the role of cod in the ecosystem.
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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) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.001 |
| 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".