Gestion intégrée du roseau commun à la réserve naturelle du Marais-Léon-Provancher (Neuville, Québec)
Bibliographic record
Abstract
Le roseau commun exotique (Phragmites australis [Cav.] Trin. ex Steud. subsp. australis) s’est propagé graduellement au cours des 20 dernières années dans la réserve naturelle du Marais-Léon-Provancher, un site de 125 ha avec 19 ha de marais d’eau douce. Des inventaires réalisés de 2013 à 2015 ont permis d’identifier 41 clones de roseau sur le territoire du marais. Compte tenu des conditions du milieu et de l’accessibilité au site, 5 méthodes ont été privilégiées pour lutter contre le roseau : l’arrachage manuel des rhizomes, la fauche des tiges, le bâchage, l’excavation mécanique avec ensemencement et l’implantation d’une compétition végétale. La superficie totale occupée par les clones de roseau à la suite des interventions a diminué de 19 %, passant de 7579 m2 en 2013 à 6132 m2 en 2017. L’excavation mécanique avec ensemencement, l’arrachage manuel et le bâchage ont engendré de fortes diminutions des superficies occupées par le roseau (baisses respectives de 99 %, 88 % et 47 %), tandis que la fauche et la compétition végétale ont eu un effet plus faible (diminution d’au plus 28 %).
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.003 | 0.001 |
| Scholarly communication | 0.002 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.005 | 0.001 |
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".