Tabanid (horsefly) abundance in treed bogs of southwestern Nova Scotia
Bibliographic record
Abstract
Species in the family Tabanidae (Diptera) are abundant and moderately taxonomically rich in Nova Scotia. However, they have been rarely studied. The present study had two objectives: 1) to determine the distribution and diversity of tabanid flies within the region and 2) to explore possible effects of forestry activity on their abundance and community characteristics in treed bogs. Nova Scotia represents a broad overlap zone for tabanid distributions. In this study, over 5,200 individuals from five genera were collected and identified to species. This collection included a new genus record for Atlantic Canada (Merycomyia), confirmation of the presence of a rare species (Chrysops delicatulus) and new records for a species previously known from only one collection locality in Nova Scotia (Chrysops pudicus). I examined the distributional patterns of the species collected, and suggest that there is some concordance with an Atlantic Coastal Plain distribution for several species. In conjunction with an existing project with Bowater Mersey Woodlands examining impacts of forestry on biodiversity in treed peatlands within southwest Nova Scotia, we selected a series of treed peatlands that varied along independent gradients of intensity of nearby forestry activity. The effects of environmental variables such as pH and temperature as well as the amount of forestry activity nearby on the abundance of individual species were examined using generalized linear models. An index of harvest intensity had varied effects on individual species abundance. The results suggest a relationship between forestry activity and tabanid fly diversity that should be explored further.
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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 | 0.001 | 0.001 |
| 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".