Avian gut passage reduces the germination light response of pokeweed (<i>Phytolaca americana</i>)
Bibliographic record
Abstract
It has been shown that passage through a bird's gut has the potential to alter seed germinability (overall percent germination) and the timing of germination. However, little is known about the potential of avian gut passage to alter the germination response of seeds to abiotic gradients, such as light availability. Specifically, it is unclear whether gut passage makes seeds more or less sensitive to variability in light. We addressed this issue using a growth chamber experiment where the germination rate of both gut-passed and control (de-pulped) seeds of the understory herb Phytolaca americana (pokeweed) was compared across three light levels. Both avian gut passage and light increased germination rate. Additionally, it was found that gut passage and light interacted to influence the germination rate, such that gut-passed seeds showed no response to light and control seeds had a strong, positive light response. Results from this experiment suggest that avian gut passage has the potential to reduce seed's sensitivity to light, which could play a role in the recruitment of avian-dispersed plant populations across variable light environments.
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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 | 0.001 |
| 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".