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Spatial and seasonal variation in thermal sensitivity within North American bird species

View ORCID ProfileJeremy M. Cohen, Daniel Fink, View ORCID ProfileBenjamin Zuckerberg
doi: https://doi.org/10.1101/2023.03.31.535105
Jeremy M. Cohen
1Department of Forest and Wildlife Ecology, University of Wisconsin, Madison, WI, USA
2Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, USA
3Center for Biodiversity and Global Change, Yale University, New Haven, CT, USA
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  • For correspondence: jeremy3cohen@gmail.com
Daniel Fink
4Cornell Lab of Ornithology, Cornell University, Ithaca, NY, USA
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Benjamin Zuckerberg
1Department of Forest and Wildlife Ecology, University of Wisconsin, Madison, WI, USA
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Abstract

Responses of wildlife to climate change are typically quantified at the species level, but physiological evidence suggests significant intraspecific variation in thermal sensitivity (non-stationarity) given adaptation to local and seasonal environments. Non-stationarity carries important implications for climate change vulnerability; for instance, sensitivity to extreme weather may increase in specific regions or seasons. Here, we leverage high-resolution observational data from eBird to understand regional and seasonal variation in thermal sensitivity for 20 bird species. Across their ranges, most birds demonstrated spatial and seasonal variation in both thermal optimum and breadth, or the temperature and range of temperatures of peak occurrence. Some birds demonstrated constant thermal optima or breadths (stationarity) while others varied according to local and current environmental conditions (non-stationarity). Across species, birds typically invested in either geographic or seasonal adaptation to climate. Intraspecific variation in thermal sensitivity is likely an important but neglected aspect of organismal responses to climate change.

Competing Interest Statement

The authors have declared no competing interest.

Footnotes

  • Author emails (in order of authorship): jeremy3cohen{at}gmail.com, daniel.fink{at}cornell.edu, bzuckerberg{at}wisc.edu

  • Author statement: all authors agreed to submission of the manuscript and accept the responsibility for the accuracy and integrity of the manuscript.

  • Data Accessibility Statement: The data supporting the results will be archived in an appropriate public repository such as Dryad or Figshare and the data DOI will be included at the end of the article.

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. All rights reserved. No reuse allowed without permission.
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Posted April 03, 2023.
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Spatial and seasonal variation in thermal sensitivity within North American bird species
Jeremy M. Cohen, Daniel Fink, Benjamin Zuckerberg
bioRxiv 2023.03.31.535105; doi: https://doi.org/10.1101/2023.03.31.535105
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Spatial and seasonal variation in thermal sensitivity within North American bird species
Jeremy M. Cohen, Daniel Fink, Benjamin Zuckerberg
bioRxiv 2023.03.31.535105; doi: https://doi.org/10.1101/2023.03.31.535105

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