Pollen limitation is uncommon in an endangered oak savannah ecosystem
Bibliographic record
Abstract
Pollen receipt limits reproduction in many plants, potentially affecting population viability and trait evolution. Despite considerable research, there is little consensus on the causes of pollen limitation (PL). Reviews suggest spatial and temporal variation in PL may be important for plant reproductive fitness, yet few studies have examined PL in multiple species across sites and years. We examined how pollinator communities affected PL in six wildflower species across six sites and 2 years. Although our study was conducted in a fragmented ecosystem and on perennial species (both are associated with PL in meta-analyses), we found that PL was uncommon. The degree of PL was highly variable among years, sites, and species, with no species or site showing consistent PL. Variation in PL among sites and years was not explained by variation in diversity or visit rate of the pollinating fauna. The rarity of PL in this study may limit our assessment of the importance of pollinators, but our results do suggest that PL is highly context-dependent, which should be a focus for future work.
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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 | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| 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".