USE OF SATELLITE TELEMETRY TO IDENTIFY TEMPORAL AND SPATIAL DISTRIBUTION\nOF THE MIDCONTINENT SANDHILL CRANE POPULATION THROUGHOUT THE\nANNUAL CYCLE
Notice bibliographique
Résumé
Effective management of the midcontinent sandhill crane (Grus canadensis) population requires having detailed information available on the distribution of subspecies and subpopulations throughout the annual cycle. The current study is being undertaken in partnership with several federal and state agencies and private organizations to obtain key information not currently available. We are monitoring crane movements throughout the year by attaching Platform Transmitting Terminals (PTTs) to plastic leg bands and with the aid of equipment on board orbiting NOAA weather satellites relocating the radiomarked individuals at 4-10 day intervals throughout the year. Twenty-one cranes were captured and radio-marked in the Central Platte River Valley in early spring 1998 and 1999. Results to date indicate the technique is well suited for obtaining the types of information being sought. Most of the radio-marked cranes after departing from the Platte River in spring staged again at sites in southern Saskatchewan but those of the Canadian subspecies (G. c. rowan i) breeding in Manitoba and Ontario staged in northwestern Minnesota. Distnbution of radio-marked individuals on the breeding grounds suggests that northeastern Russia may be a more important breeding area for lesser sandhill cranes (G. c. canadensis) than previously thought; 50% of lesser sandhill cranes tagged to date (6 of 12) migrated to locations in northeastern Siberia. Onset offall migration occurred from mid-August to mid-September depending on latitude; fall staging was centered primarily in 3 areas of southern Saskatchewan with fewer radio-marked cranes staging in southwestern Manitoba and central North Dakota. Most radio-marked cranes have spent winter in west Texas, 2 (both G. c. rowani) have occupied sites near the Texas Gulf Coast, and 1 each spent winter at sites in Arizona and New Mexico (both G. c. canadensis breeding in northeastern Siberia). Habitats occupied by cranes are being identified throughout the annual cycle with the aid of GIS methodology as are temporal and spatial patterns of use of the Central Platte River Valley. Information obtained from the study will be used to delineate breeding ranges, migration corridors, staging areas, and wintering grounds of subspecies and subpopulations to allow crane managers to better meet the needs of the midcontinent population. Current plans are to gather information on a total of 200 sandhill cranes over the study period with 42 cranes to be radio marked in 2000. Those interested in following the radio-marked cranes during their annual cycle or learning more about the crane study can do so by logging on our web site at www.npwrc.usgs.gov/perm/cranemov/cranmov.htm.
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 | 0,001 | 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 | 0,001 | 0,001 |
| Communication savante | 0,000 | 0,001 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,001 | 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 ».