Coping with phenological mismatch: how an insectivorous migrant shorebird may mitigate the negative effects of a warming Arctic by prey and patch selection
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The Arctic warming advances snowmelt and arthropod emergence, affecting breeding phenology of shorebirds. However, mismatches between predator and prey phenology threaten chick growth and survival. This PhD project examines if birds adjust behaviorally to mitigate mismatches. Arctic tundra heterogeneity may offer localized arthropod peaks post-general peak, potentially aiding predators. Sanderlings in northeast Greenland are studied for movement patterns, chick growth, and diet changes. Three expeditions collected data analyzed for 2019 and 2021. DNA-metabarcoding analyzes droppings. Research reveals mechanisms to counteract Arctic warmings effects, crucially. Results will be published soon, contributing to understanding trophic mismatches in birds.
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