Local Interactions in Pitcher Plant Communities Scale-Up to Regional Patterns in Distribution and Abundance
Bibliographic record
Abstract
We used the aquatic communities living in the purple pitcher plant (Sarracenia purpurea L., Sarraceniaceae) to determine if patterns produced by trophic interactions at the local scale can be detected at larger spatial scales. Mosquitoes (Wyeomyia smithii Coq., Diptera: Culicidae) are known to have a negative effect on the aquatic microfauna within leaves. We compared the abundance of two microfaunal taxa, Bodo (Kinetoplastea: Bodonidae) and Habrotrocha rosa Donner (Rotifera: Bdelloidea), in bogs with and without pitcher plant mosquitoes. Bogs containing pitcher plant mosquitoes had lower densities of bacteria through the study period. However, within these bogs, leaves with mosquitoes did not have lower bacterial densities. We found that the pattern for Bodo was similar at the leaf and bog spatial scales. Abundance of Bodo was closely linked to bacterial densities and the presence of mosquitoes strengthened that relationship, because of greater predator impacts when bacteria were scarce. In contrast, different patterns emerged at the two scales for H. rosa. At the leaf scale, a predator effect was seen only for low bacterial densities (as for Bodo), but at the bog scale, H. rosa was less abundant in mosquito bogs, and abundance was not associated with bacterial levels. We suggest that differences in life history characteristics (population growth rate and average abundance) may influence the relative influence of local interactions and regional processes such as colonization.
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How this classification was reachedexpand
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 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".