Examining best management practices to control the invasion of Potentilla recta within northern intermountain grasslands
Notice bibliographique
Résumé
Sulphur cinquefoil (Potentilla recta L.) is an invasive plant of concern within grasslands in the intermountain region of the northwestern United States and southwestern Canada. The aim of this research was to identify strategies to control and contain the spread of P. recta within northern intermountain grasslands, with a focus on grasslands in southeastern British Columbia, Canada.\n\nIn a field study, P. recta response to targeted goat grazing conducted once versus twice annually, aminopyralid as a one-time herbicide treatment, and integrated targeted goat grazing and aminopyralid application were examined. Treatment effects on plant community composition were also assessed. Targeted grazing was implemented in 2019 and 2020 and aminopyralid (56 g ai ha-1) was applied once in 2019. Greenhouse studies were conducted to assess P. recta growth response in native grass, forb, and grass and forb communities, with and without fertilizer, and to examine the existing prevalence of P. recta and other species in the soil seed bank at varying soil depths (0-5 cm, 5-10 cm, 10-15 cm) of P. recta invaded grasslands. \n\nPotentilla recta aboveground biomass and number of seed heads declined following targeted grazing, with no differences between grazing once and grazing twice. Potentilla recta biomass and seed heads were reduced in the aminopyralid only and targeted grazing plus aminopyralid treatments with no differences between these treatments, indicating both targeted goat grazing and aminopyralid application are possible management options. Increased grass cover was observed in targeted grazing and aminopyralid treatments, suggesting potential off-target effects. Changes in plant community in response to treatments and interactions between treatment, site, and seasonal and annual variations are possible and must be considered as each can influence treatment efficacy. \n\nPotentilla recta growth response did not differ between the native plant communities in the greenhouse; however, P. recta above and belowground biomass declined as native plant aboveground biomass increased. In the seed bank, seven of the nine species identified were non-native. The establishment of a productive plant community following P. recta control may be an important strategy to mitigate P. recta reinvasion or secondary invasion by other invasive species from the seed bank.
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Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,001 |
| Études des sciences et des technologies | 0,001 | 0,000 |
| Communication savante | 0,000 | 0,001 |
| Science ouverte | 0,001 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,002 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».