Temporal changes in reproductive success and optimal breeding decisions in a long-distance migratory bird.

ABSTRACT: Many avian migrants have not adjusted breeding phenology to climate warming resulting in negative consequences for their offspring. We studied seasonal changes in reproductive success of the greater snow goose (Anser caerulescens atlantica), a long-distance migrant. As the climate warms and plant phenology advances, the mismatch between the timing of gosling hatch and peak nutritive quality of plants will increase. We predicted that optimal laying date yielding highest reproductive success occurred earlier over time and that the seasonal decline in reproductive success increased. Over 25 years, reproductive success of early breeders increased by 42%, producing a steeper seasonal decline in reproductive success. The difference between the laying date producing highest reproductive success a

SUBMITTER: Resendiz-Infante C 

PROVIDER: S-EPMC7744573 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature