Bioenergetics and mercury dynamics in fish: a modelling perspective
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
The concentration of mercury in fish generally increases with age and size. Although a number of hypotheses have been invoked to explain this pattern, our understanding of the processes regulating the accumulation of mercury in fish is currently inadequate. In this study, we used a simple mass balance model to explore how the relationship between mercury concentration and fish age is affected by bioenergetics processes and prey contamination. We show that mercury concentration increases with fish age when older fish consume more contaminated prey or when metabolic costs associated with activity also increase with fish size. Our analyses further indicate that the relative importance of growth rate, activity costs, and consumption rates for mercury concentration can vary widely. We also show that changes in the energy density of fish and their prey with fish size could also affect the relationship between mercury concentration in fish and age. Application of this mass balance model indicates that bioenergetics models underestimate the activity costs of lake trout. A simple approach is presented to estimate activity costs of fish under field conditions.
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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 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 it