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Population specific annual cycles and migration strategies in a leap-frog migrant
Ansvarlig organisasjon
2022 (engelsk)Inngår i: Behavioral Ecology and Sociobiology, ISSN 0340-5443, E-ISSN 1432-0762, Vol. 76, nr 2Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A common migratory pattern in birds is that northerly breeding populations migrate to more southerly non-breeding sites compared to southerly breeding populations (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, creating distinctive selective pressures and migratory strategies. Information about such adaptations is important to understand migratory drivers and evolution of migration patterns. We use light-level geolocators and citizen science data on regional spring arrivals to compare two populations of common ringed plover Charadrius hiaticula breeding at different latitudes. We (1) describe and characterize the annual cycles and (2) test predictions regarding speed and timing of migration. The northern breeding population (NBP) wintered in Africa and the southern (SBP) mainly in Europe. The annual cycles were shifted temporally so that the NBP was always later in all stages. The SBP spent more than twice as long time in the breeding area, but there was no difference in winter. The NBP spent more time on migration in general. Spring migration speed was lower in the SBP compared to autumn speed of both populations, and there was no difference in autumn and spring speed in the NBP. We also found a larger variation in spring arrival times across years in the SBP. This suggests that a complex interaction of population specific timing and variation of breeding onset, length of breeding season, and proximity to the breeding area shape the annual cycle and migratory strategies.

sted, utgiver, år, opplag, sider
2022. Vol. 76, nr 2
Emneord [en]
Geolocator, Migration, Speed, Timing, Common ringed plover
HSV kategori
Identifikatorer
URN: urn:nbn:se:polar:diva-8817DOI: 10.1007/s00265-021-03116-yOAI: oai:DiVA.org:polar-8817DiVA, id: diva2:1625688
Tilgjengelig fra: 2022-01-09 Laget: 2022-01-09 Sist oppdatert: 2022-01-09bibliografisk kontrollert

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