Chlorophyll a conversion and gut passage time for the pelagic
Bibliographic record
Abstract
Abstract. We determined the chlorophyll (Chi) a conversion efficiency, defined as the conversion of Chi a into pheopigments and non-fluorescent products, for the cold-water appendicularian Oikopleura vanhoeffeni using M Ge as conservative tracer. In both laboratory experiments and in freshly collected animals, there was enough undegraded Chi a present in the gut to provide an index of feeding activity for individual animals. In laboratory experiments with diatoms, Chi a conversion efficiency was predictable with an average of 79%. The mean gut passage time (0.8 h) determined using corn starch and diatoms as markers was not influenced by food concentration or animal size over a trunk length range of 1.8-5 mm. When experimentally determined Chi a conversion efficiency and gut passage times were applied to O.vanhoeffeni from Logy Bay (Newfoundland), the estimated clearance rates were in close agreement with previously published values using several different techniques. We therefore suggest that the modified gut pigment technique is a useful tool to assess in situ ingestion rates of O.vanhoeffeni.
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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 | 0.000 | 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 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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; a candidate call from one source (direct Gemma or distilled Codex), 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".