Size, structure, movement, and survival of American lobster, Homarus americanus, populations in areas with and without commercial harvesting
Notice bibliographique
Résumé
To determine the potential effectiveness of no-take reserves as a fisheries conservation tool for American lobsters (Homarus americanus), I quantified the size, structure, movement, and survival of lobsters inside and outside of two small no-take reserves (Round Island and Duck Islands) in Bonavista Bay, Newfoundland during 1997-1999. These no-take reserves were established by harvesters as part of a co-management plan for the local fishery and supported approximately 1.5% of the local lobster population. Although this study only concerned the first three years following reserve establishment, there were clear differences in lobster population parameters inside and outside of the no-take reserves. At the Round Island reserve, population density was high and stable over time, and female and male size increased, as did the proportion of ovigerous females. However, at the Duck Islands reserve, population density increased dramatically between 1997 and 1998, and male size increased over time, but there was no detectable change in female size or in the proportion of ovigerous females. Lobster density, female and male size, and the proportion of ovigerous females were greater within the Round Island reserve compared to an adjacent harvested area. At the Duck Islands, females and males were larger in size within the reserve but I found no difference in lobster density or the proportion of females that were ovigerous between the reserve and an adjacent harvested area. Differences in the response of some lobster population components to small no-take reserves can be explained by patterns of lobster movement and survival. Because the frequency of lobster emigration from the reserves was low (only 8.7% of tagged lobsters recaptured were in an area with a harvesting status different from that of where they were tagged) and harvesting pressure outside of the reserves was intense (annual harvesting mortality amounted up to 87.2% for lobsters eligible for commercial harvest), my results indicated that no-take reserves can offer increased survival to lobsters and may provide direct benefits to the local fishery.
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 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) | 0,001 | 0,000 |
| Bibliométrie | 0,001 | 0,001 |
| Études des sciences et des technologies | 0,001 | 0,002 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 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 ».