Exploring intraspecific variation in migratory destinations to investigate the drivers of migration - Archive ouverte HAL Access content directly
Journal Articles Oikos Year : 2020

Exploring intraspecific variation in migratory destinations to investigate the drivers of migration

Abstract

Various benefits (e.g. tracking of resources and of climate niche) and costs (e.g. distance travelled) are hypothesized to drive seasonal animal migrations. Until now, these potential factors have been investigated together at the species level, but migratory movements are made at the individual level, leading to intraspecific variability. Here, we use ringing/recovery data from 1308 individuals belonging to thirteen North American bird species to analyse patterns in intraspecific variability of migratory destinations in order to investigate which factors underpin bird migration and how individuals trade‐off among multiple factors. Our results suggest that migratory destinations have been shaped by access to resources (most important during the breeding season) and climatic niche tracking (during winter, mostly). However, the benefits of resource surpluses and climate niche tracking appear to be traded off against the cost of migratory distance, which seems to strongly constrain where individuals migrate.
Not file

Dates and versions

hal-03005336 , version 1 (14-11-2020)

Identifiers

Cite

Anne-Sophie Bonnet-Lebrun, Marius Somveille, Ana S.L. Rodrigues, Andrea Manica. Exploring intraspecific variation in migratory destinations to investigate the drivers of migration. Oikos, 2020, ⟨10.1111/oik.07689⟩. ⟨hal-03005336⟩
59 View
0 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More