Population specific annual cycles and migration strategies in a leap-frog migrant ...

• Main Authors: Hedh, Linus, Dänhardt, Juliana, Hedenström, Anders
• Format: Dataset
• Language: English
• Published: Dryad 2021
• Subjects: Abisko; Arctic; Charadrius hiaticula; Common Ringed Plover; Ringed Plover
• Online Access: https://dx.doi.org/10.5061/dryad.5dv41ns68; https://datadryad.org/stash/dataset/doi:10.5061/dryad.5dv41ns68

A common migratory pattern in birds is that northerly breeding populations migrate to more southerly non-breeding sites compared to southerly: a pattern called leap-frog migration. Not only do populations experience differences in migration distances, but also different environmental conditions, which may vary spatiotemporally within their annual cycles, crating distinctive selective pressures and migratory behaviors. Information on how populations schedule their annual cycles according to environmental conditions and by extension, adapt their migratory behaviors is important to understand drivers of migration and evolution of migration patterns at large. Here we use light level geolocators and citizen science data on regional spring arrivals to compare two populations of common ringed plover Charadrius hiaticula – a textbook example of a leap-frog migrant – breeding at different latitudes. We 1) describe and characterize the spatiotemporal patterns of the annual cycles, and 2) test predictions regarding ... : This data was used to compare migratory behaviour between two populations of common ringed plover Charadrisu hiaticula breeding in Ottenby, southeast Sweden, and Abisko, norther (Arctic) Sweden to test hypotheses regarind miration speed and timing of migration in relation to population specific annual cycles. Data on migratory behavior was collected with light level geolocators. Parameters such as departure and arrival days, and migration distance were derived using R programme GeoLight (version 2.0.1). ...