Bibliographic record
Abstract
Body size variation of the intertidal limpet Lottia digitalis (Rathke) and the factors responsible for maintaining it were examined at three central California intertidal sites differing in wave exposure. Limpet body size increased with increasing tidal height. This increase in size with tidal height was correlated with exposure to wave splash and migratory behavior. In areas of high and intermediate wave splash, there was a significant positive correlation between increased limpet size and tidal height, while in sheltered conditions there was no significant gradient in body size. Transplant experiments suggested that the size gradient could be maintained by the upward migration of large limpets and downward migration of small limpets. In the area with little size gradient, there was no significant directional migration of transplanted limpets. Limpets initially exhibited a fixed migratory response when displaced both within an area and between areas differing in exposure. However, after an acclimation period of 5 days in a new exposure condition, the response of transplanted L. digitalis was indistinguishable from that of limpets native to that condition. The findings suggest that both fixed short-term and flexible long-term migratory behavior are in part responsible for the maintenance of body size gradients.
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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 | 0.002 | 0.002 |
| Meta-epidemiology (narrow) | 0.004 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.002 |
| Bibliometrics | 0.004 | 0.002 |
| Science and technology studies | 0.003 | 0.003 |
| Scholarly communication | 0.005 | 0.009 |
| Open science | 0.004 | 0.005 |
| Research integrity | 0.010 | 0.004 |
| Insufficient payload (model declined to judge) | 0.987 | 0.987 |
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; the direct Gemma label and the distilled Codex classifier 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".