CENSUS OF WEDGE-TAILED SHEARWATERS PUFFINUS PACIFICUS AND AUDUBON'S SHEARWATERS P. LHERMINIERI ON COUSIN ISLAND, SEYCHELLES USING CALL-PLAYBACK
Pourquoi ce travail est dans la base
Une base qui oublie comment elle a trouvé un travail ne peut pas être vérifiée. Voici les voies qui ont admis celui-ci.
Notice bibliographique
Résumé
SUMMARY BURGER, A.E. & LAWRENCE, A.D. 2001. Census of Wedge-tailed Shearwaters Puffinus pacificus and Audubon’s Shearwaters P. lherminieri on Cousin Island, Seychelles using call-playback. Marine Ornithology 29: 57–64. We counted shearwaters on Cousin Island, Seychelles, and tested the call-playback method for determining nest occupancy. Wedge-tailed Shearwaters Puffinus pacificus nest synchronously and were counted during early incubation in October 1999. Audubon’s Shearwaters P. lherminieri nest year-round and were counted in February 2000. We made five refinements to the call-playback method that are applicable to other cavity-nesting seabirds. First, to minimise errors associated with the method, we applied call-playback only where cavity occupancy could not be determined by looking or feeling into the nest cavity (i.e., in 17% of Wedge-tailed Shearwater cavities, but 76% of the smaller Audubon’s Shearwater cavities). Second, we combined daytime visits to the census plots, which facilitated location of cavities, reduced disturbance to birds and minimised damage to fragile burrows, with night visits to determine occupancy. Responses to call-playbacks were significantly higher at night than by day. Third, we timed the bird’s responses to derive the optimal duration of a playback test (120 s in Wedge-tailed and 80 s in Audubon’s Shearwaters). Fourth, we used the proportions responding at night for both occupied cavities (R o ) and cavities with unknown contents (R u ) to formulate a response coefficient (R u /R o ) used to estimate occupancy in cavities with unknown contents. For Wedge-tailed, R o = 0.774, R u = 0.170 and R u /R o = 0.220, and for Audubon’s, R o = 0.714, R u = 0.164 and R u /R o = 0.229 (i.e., 22.0% of Wedge-tailed and 22.9% of Audubon’s Shearwater cavities with contents unknown were likely to be occupied). Fifth, we reported the density of several categories of nest cavity, including cavities occupied by birds, those with failed eggs or chicks, and empty potential cavities. This allows a wider range of monitoring options and comparisons with other studies. The total number of cavities occupied by Wedge-tailed and Audubon’s Shearwaters on Cousin was 13 066 (95% confidence limits 9259–16 873) and 5100 (95% CL 3976–6625), respectively. We lack an accurate method to estimate the year-round breeding population of Audubon’s Shearwater. The Wedge-tailed Shearwater population was similar to a 1996/97 estimate, but considerably less than the 1973/74 estimate of 30 000–35 000 pairs, which might have been an overestimate. There have been no previous estimates of the Audubon’s Shearwater population on Cousin Island. Continued monitoring of the Cousin Island shearwaters is recommended.
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.
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 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,001 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,004 | 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 découle