Net effect of competing vegetation on selected environmental conditions and performance of four spruce seedling stock sizes after eight years in Qu�bec (Canada)
Why this work is in the frame
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Bibliographic record
Abstract
A study was established in 1993 to determine the response of four black spruce (Picea mariana) and white spruce (P.glauca) stock sizes on two sites located in Québec (Canada), each representing a different type of competing vegetation.At each site, a split-split-plot design with 15 to 17 replicates was used, in which the presence of competition (weedy and bare plots), seedling initial size, and spruce species were assigned respectively to the whole plot, the subplot, and the sub-subplot.Larger initial seedling size provided a greater competitive ability for light and had higher growth rates than the standard stock size for both species.Growth gains from combining plantation of large stock with vegetation control were multiplicative.Non-crop vegetation significantly lowered the seasonal profile of 10-cm depth soil temperature on both sites.This study shows that early release treatment is required on sites dominated by raspberry-hardwood competition complex and planting large spruce stock on such harsh competition sites will help reduce the need for repeated vegetation control.large seedling / competition / vegetation control / soil temperature / release treatment Résumé -Effet net de la végétation de compétition sur certaines conditions environnementales et sur la performance de quatre dimensions de plants d'épinette après huit ans.Une étude a été établie en 1993 afin de déterminer la performance de quatre dimensions de semis d'épinette noire (Picea mariana) et d'épinette blanche (P.glauca) mis en terre sur deux sites situés au Québec (Canada), chacun représentant un type de compétition.À chaque site d'étude, un dispositif en tiroirs subdivisés avec 15 et 17 répétitions a été utilisé, avec la présence de compétition, la dimension initiale des semis et l'espèce, assignées à la parcelle principale, la sous-parcelle et la sous sous-parcelle, respectivement.Les plants de fortes dimensions (PFD) ont reçu plus de lumière et ils affichaient une meilleure croissance que le plant de dimension standard.Les gains de croissance découlant de la combinaison d'une plantation de PFD avec contrôle de la compétition ont été multiplicatifs.La végétation de compétition a significativement abaissé le profil saisonnier de la température du sol mesurée à 10 cm de profondeur.Cette étude démontre qu'un dégagement hâtif est nécessaire sur les stations caractérisées par une forte compétition de framboisiers et de feuillus intolérants.De plus, sur ces mêmes stations, un reboisement avec des PFD devrait limiter le besoin de répéter les dégagements mécaniques.plant de fortes dimensions / compétition / gestion de la végétation / température du sol / dégagement mécanique
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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 | 0.001 | 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 | 0.001 |
| 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 it