Decoupling of bird migration from the changing phenology of spring green-up-Reference-Cited by-同舟云学术

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

Published:2024-03-04 Issue:12 Volume:121 Page:
ISSN:0027-8424
Container-title:Proceedings of the National Academy of Sciences
language:en
Short-container-title:Proc. Natl. Acad. Sci. U.S.A.

Author:

Robertson Ellen P.¹²^ORCID,La Sorte Frank A.³⁴^ORCID,Mays Jonathan D.⁵,Taillie Paul J.⁶^ORCID,Robinson Orin J.⁷,Ansley Robert J.¹^ORCID,O’Connell Timothy J.¹^ORCID,Davis Craig A.¹^ORCID,Loss Scott R.¹^ORCID

Affiliation:

1. Department of Natural Resource Ecology and Management, Oklahoma State University, Stillwater, OK 74078

2. South Central Climate Adaptation Science Center, Norman, OK 73019

3. Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT 06511

4. Center for Biodiversity and Global Change, Yale University, New Haven, CT 06511

5. Fish and Wildlife Research Institute, Florida Fish and Wildlife Conservation Commission, Gainesville, FL 32611

6. Department of Geography and Environment, University of North Carolina at Chapel Hill, Chapel Hill, NC 27514

7. Cornell Lab of Ornithology, Cornell University, Ithaca, NY 14850

Abstract

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.

Publisher

Proceedings of the National Academy of Sciences

Link

https://pnas.org/doi/pdf/10.1073/pnas.2308433121

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