Data and code to explore annual cycle schedule adjustments in a long distance migrant

• Main Authors: Carneiro, Camilo, Gunnarsson, Tómas, Alves, José
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2022
• Subjects: Iceland; Numenius phaeopus
• Online Access: https://doi.org/10.5281/zenodo.6542418

Matching the timing of annual cycle events with the required resources can have crucial consequences for individual fitness. But as the annual cycle is comprised of sequential events, a delay at any point may be carried over to the subsequent stage (or more, in a domino effect) and negatively influence individual performance. To investigate how migratory animals navigate their annual schedule, and where and when it may be adjusted, we used full annual cycle data of 38 Icelandic whimbrels Numenius phaeopus islandicus tracked over 7 years – a subspecies that typically performs long-distance migrations to West Africa. We found that individuals apparently used the wintering sites to compensate for delays that mostly arose due to previous successful breeding, and a domino effect was observed from spring departure to laying date, with the potential to affect breeding output. However, the total time saved during all stationary periods is apparently enough to avoid interannual effects between breeding seasons. These findings highlight the importance of preserving good quality non-breeding sites in which individuals may adjust annual schedules and avoid potentially adverse effects of arriving late at the breeding grounds. We appreciate that anyone interested in using these data contacts the authors. Funding provided by: Rannís Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100011103 Award Number: 130412-052 Funding provided by: Rannís Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100011103 Award Number: 152470-052 Funding provided by: University of Iceland Research Fund* Crossref Funder Registry ID: Award Number: Funding provided by: Fundação para a Ciência e a Tecnologia Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100001871 Award Number: UIDP/50017/2020 Funding provided by: Fundação para a Ciência e a Tecnologia Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100001871 Award Number: UIDB/50017/2020 Funding provided by: Fundação para a Ciência e a Tecnologia Crossref ...