Science Response : updated LURS abundance and genetic analyses
Notice bibliographique
Résumé
Lake Utopia is part of the Magaguadavic River watershed in southwestern New Brunswick. The Rainbow Smelt (Osmerus mordax) living in Lake Utopia (LURS) represent one of the only three confirmed occurrences in Canada of co-existing genetically divergent smelt populations. Two populations of smelt co-exist in the lake: the small-bodied population (SbP) and the large-bodied population (LbP). The SbP has been protected under the Species at Risk Act (SARA) since 2003. The LbP was designated as Threatened by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC 2008) because it is one of a sympatric species pair, it is endemic to a single lake with a small index of area of occupancy (6 km2), it spawns in only three small streams, and it could quickly become extinct through degradation of spawning streams from increasing development around the lake shore and impacts of the dip-net fishery. Potential threats identified by COSEWIC (2008) were the introduction of exotic species and increasing eutrophication. Fisheries and Oceans Canada (DFO) undertook a Recovery Potential Assessment (RPA) for both LbP and SbP populations in 2010 (DFO 2011). Both populations were re-assessed as endangered by COSEWIC in 2018. The LbP was listed as endangered under SARA in 2019. Sampling of the 2014 and 2017 LbP spawning runs were used to estimate population abundance and provide advice on an appropriate population size objective, as well as the likelihood that the population objective could be achieved under current levels of mortality (DFO 2018). However, the abundance estimates for the 2014 and 2017 spawning runs were uncertain as genetic analyses of the 2014 spawning run indicated a mismatch between expected genotype and the minimum fork length used to differentiate LbP from SbP spawners. No genetic analyses were available for the 2017 spawning run. Recent genetic analyses of the 2017 LbP spawning run, as well as tissue sampling of SbP spawners in 2017 and 2018, provide an opportunity to review the minimum fork length that can be used to differentiate phenotypically between the LbP and SbP populations. The objectives of this Science Response Process were to: Provide updated abundance estimates for LURS-LbP in 2014 and 2017 based on genetic analysis of these samples undertaken in 2019. Review the recommended minimum fork length criterion for distinguishing LURS-LbP from LURS-SbP. Discuss how the genetic analyses and updated abundance estimates affect the likelihood that the updated abundance objective for LURS-LbP can be achieved under current levels of mortality (actual mortality levels are not known). This Science Response Report results from the Regional Science Response Process of November 19, 2019, and January 20, 2020, on Lake Utopia Rainbow Smelt, Large-bodied Population (LURS-LbP) Population Abundance and Allowable Harm Estimate.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,003 | 0,010 |
| Méta-épidémiologie (sens strict) | 0,001 | 0,000 |
| Méta-épidémiologie (sens large) | 0,001 | 0,000 |
| Bibliométrie | 0,004 | 0,002 |
| Études des sciences et des technologies | 0,001 | 0,000 |
| Communication savante | 0,002 | 0,001 |
| Science ouverte | 0,001 | 0,002 |
| Intégrité de la recherche | 0,002 | 0,002 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,103 | 0,046 |
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 source (Gemma direct ou Codex distillé), 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 ».