BéginMarchand2019

Référence

Bégin Marchand, C. (2019) Comprendre la stratégie migratoire de trois espèces de grives du genre Catharus à l'aide d'un réseau innovateur de radio-télémétrie. Mémoire de maîtrise, Université Laval. (URL )

Résumé

A better knowledge of the migratory strategies at species, population and individual levels should facilitate the identification of limiting factors and challenges faced by migrants. Catharus thrushes from eastern North America appear to follow the Atlantic migration corridor to reach their wintering grounds further south in the fall. Until recently, technologies did not allow us to determine the differences between species, populations and individuals at a greater resolution. This study compares the individual fall migration strategies of the Swainson’s Thrush, the Bicknell's Thrush and the Gray-cheeked Thrush using a coordinated radio-telemetry network, which receiving stations are deployed in eastern Canada and the United States. Migration routes, migration paces, and individual variability were analyzed. The Swainson's Thrush migrated further west along the St. Lawrence River and the Great Lakes than Bicknell's Thrush and Gray-cheeked Thrush, which migrated along the Atlantic coast. Stopovers by the three species appeared more frequent on the southeastern United States than further North. However, Gray-cheeked Thrushes migrated faster than the other two species. Conspecifics exhibited significant individual variability (> 10 degrees) in maximum migration longitude. From a conservation perspective, these differences could translate into different stakes depending on species, populations and regions. The results of this study illustrate in a new way the versatility of migration strategies within species with similar ecological characteristic, and will benefit from being integrated into synthesis efforts aiming a deeper knowledge of the issues related to bird migration.

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@MASTERSTHESIS { BéginMarchand2019,
    TITLE = { Comprendre la stratégie migratoire de trois espèces de grives du genre Catharus à l'aide d'un réseau innovateur de radio-télémétrie },
    AUTHOR = { Bégin Marchand, C. },
    SCHOOL = { Université Laval },
    YEAR = { 2019 },
    NOTE = { CEFTMS, Desrochers, A. and Tremblay, J.A. },
    ABSTRACT = { A better knowledge of the migratory strategies at species, population and individual levels should facilitate the identification of limiting factors and challenges faced by migrants. Catharus thrushes from eastern North America appear to follow the Atlantic migration corridor to reach their wintering grounds further south in the fall. Until recently, technologies did not allow us to determine the differences between species, populations and individuals at a greater resolution. This study compares the individual fall migration strategies of the Swainson’s Thrush, the Bicknell's Thrush and the Gray-cheeked Thrush using a coordinated radio-telemetry network, which receiving stations are deployed in eastern Canada and the United States. Migration routes, migration paces, and individual variability were analyzed. The Swainson's Thrush migrated further west along the St. Lawrence River and the Great Lakes than Bicknell's Thrush and Gray-cheeked Thrush, which migrated along the Atlantic coast. Stopovers by the three species appeared more frequent on the southeastern United States than further North. However, Gray-cheeked Thrushes migrated faster than the other two species. Conspecifics exhibited significant individual variability (> 10 degrees) in maximum migration longitude. From a conservation perspective, these differences could translate into different stakes depending on species, populations and regions. The results of this study illustrate in a new way the versatility of migration strategies within species with similar ecological characteristic, and will benefit from being integrated into synthesis efforts aiming a deeper knowledge of the issues related to bird migration. },
    URL = { https://corpus.ulaval.ca/jspui/handle/20.500.11794/34505 },
    TIMESTAMP = { 2019-10-10 },
}

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