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Peer-reviewedCC BY 4.0Global Change Biology

Abundance Redistribution Increases Predator‐Prey Interaction Potentials Among North American Birds

  • Heng‐Xing Zou1,2
  • Chia Hsieh3,4,5
  • Phoebe L. Zarnetske3,4,6
  • Kai Zhu1,2
  • Brian C. Weeks2
6 affiliations
  1. 1Institute for Global Change Biology University of Michigan Ann Arbor Michigan USA
  2. 2School for Environment and Sustainability University of Michigan Ann Arbor Michigan USA
  3. 3Department of Integrative Biology Michigan State University East Lansing Michigan USA
  4. 4Ecology, Evolution, and Behavior Program Michigan State University East Lansing Michigan USA
  5. 5Kellogg Biological Station Michigan State University Hickory Corners Michigan USA
  6. 6The Institute for Biodiversity, Ecology, Evolution, and Macrosystems Michigan State University East Lansing Michigan USA
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Abstract

Species are shifting their geographical ranges, yet the consequences of these spatial redistributions for species interactions have not been examined at broad spatial and temporal scales. Here, we characterize shifts in the potential for predator‐prey interactions among North American birds over the past 50 years. We first predict potential predator‐prey interactions based on existing data, then construct a novel, abundance‐weighted metric of interaction potential for each pair of predator and prey species in local communities. We found nearly universal increases in predator‐prey interaction potentials across North America that are mostly driven by increases in predator abundances. The spatial redistributions of predators and prey lead to turnover of interactions within local communities that are less associated with changes in climate than with human‐induced land use changes. Our results highlight the importance of considering traits, abundances, and species interactions—including known and potential interactions—when studying the ecological consequences of range shifts.

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Cite

BibTeXRIS
BibTeX
@article{zou2026abundance,
  title = {{Abundance Redistribution Increases Predator‐Prey Interaction Potentials Among North American Birds}},
  author = {Heng‐Xing Zou and Chia Hsieh and Phoebe L. Zarnetske and Kai Zhu and Brian C. Weeks},
  journal = {Global Change Biology},
  year = {2026},
  month = nov,
  doi = {10.1111/gcb.71163},
  url = {https://doi.org/10.1111/gcb.71163},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Abundance Redistribution Increases Predator‐Prey Interaction Potentials Among North American Birds
AU  - Heng‐Xing Zou
AU  - Chia Hsieh
AU  - Phoebe L. Zarnetske
AU  - Kai Zhu
AU  - Brian C. Weeks
PY  - 2026
DA  - 2026/11/03
JO  - Global Change Biology
DO  - 10.1111/gcb.71163
UR  - https://doi.org/10.1111/gcb.71163
AB  - Species are shifting their geographical ranges, yet the consequences of these spatial redistributions for species interactions have not been examined at broad spatial and temporal scales. Here, we characterize shifts in the potential for predator‐prey interactions among North American birds over the past 50 years. We first predict potential predator‐prey interactions based on existing data, then construct a novel, abundance‐weighted metric of interaction potential for each pair of predator and prey species in local communities. We found nearly universal increases in predator‐prey interaction potentials across North America that are mostly driven by increases in predator abundances. The spatial redistributions of predators and prey lead to turnover of interactions within local communities that are less associated with changes in climate than with human‐induced land use changes. Our results highlight the importance of considering traits, abundances, and species interactions—including known and potential interactions—when studying the ecological consequences of range shifts.
SN  - 1354-1013
SN  - 1365-2486
ER  -