Decoupling of bird migration from the changing phenology of spring green-up.

Autor:	Robertson EP; Department of Natural Resource Ecology and Management, Oklahoma State University, Stillwater, OK 74078.; South Central Climate Adaptation Science Center, Norman, OK 73019., La Sorte FA; Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT 06511.; Center for Biodiversity and Global Change, Yale University, New Haven, CT 06511., Mays JD; Fish and Wildlife Research Institute, Florida Fish and Wildlife Conservation Commission, Gainesville, FL 32611., Taillie PJ; Department of Geography and Environment, University of North Carolina at Chapel Hill, Chapel Hill, NC 27514., Robinson OJ; Cornell Lab of Ornithology, Cornell University, Ithaca, NY 14850., Ansley RJ; Department of Natural Resource Ecology and Management, Oklahoma State University, Stillwater, OK 74078., O'Connell TJ; Department of Natural Resource Ecology and Management, Oklahoma State University, Stillwater, OK 74078., Davis CA; Department of Natural Resource Ecology and Management, Oklahoma State University, Stillwater, OK 74078., Loss SR; Department of Natural Resource Ecology and Management, Oklahoma State University, Stillwater, OK 74078.
Jazyk:	angličtina
Zdroj:	Proceedings of the National Academy of Sciences of the United States of America [Proc Natl Acad Sci U S A] 2024 Mar 19; Vol. 121 (12), pp. e2308433121. Date of Electronic Publication: 2024 Mar 04.
DOI:	10.1073/pnas.2308433121
Abstrakt:	The green-up of vegetation in spring brings a pulse of food resources that many animals track during migration. However, green-up phenology is changing with climate change, posing an immense challenge for species that time their migrations to coincide with these resource pulses. We evaluated changes in green-up phenology from 2002 to 2021 in relation to the migrations of 150 Western-Hemisphere bird species using eBird citizen science data. We found that green-up phenology has changed within bird migration routes, and yet the migrations of most species align more closely with long-term averages of green-up than with current conditions. Changing green-up strongly influenced phenological mismatches, especially for longer-distance migrants. These results reveal that bird migration may have limited flexibility to adjust to changing vegetation phenology and emphasize the mounting challenge migratory animals face in following en route resources in a changing climate. Competing Interests: Competing interests statement:The authors declare no competing interest.
Databáze:	MEDLINE
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