A preliminary assessment of the effects of <i>Didymosphenia geminata</i> nuisance growths on the structure and diversity of diatom assemblages of the Restigouche River basin, Quebec, Canada
Why this work is in the frame
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Bibliographic record
Abstract
In June 2006, blooms of Didymosphenia geminata (Lyngbye) M. Schmidt were observed for the first time in the Matapedia River, Quebec. This species can produce nuisance-level epilithic algal mats in oligotrophic rivers with stable flows. The lack of knowledge surrounding the potential impacts of nuisance growths on lotic ecosystems has raised concerns. Periphyton communities were sampled in three rivers of the Restigouche watershed to assess the effects of D. geminata nuisance growths on surrounding diatom assemblages. This study provides a preliminary assessment of the effect of D. geminata on the species composition of diatom assemblages and the influence of increased biofilm complexity on species diversity. Our results show that D. geminata mats have an effect on the structure and diversity of diatom assemblages. Conversely, we found no evidence that an increase in Standing Crop Index (SCI) further impacted diatom diversity or structure of these assemblages. This preliminary study contributes to the growing knowledge of the biology and impact of D. geminata in lotic environments.
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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 | 0.002 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.002 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.002 | 0.002 |
| Research integrity | 0.000 | 0.001 |
| 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 it