Oecologia

, Volume 44, Issue 3, pp 390–395 | Cite as

Environmental harshness, heat stress, and Marmota flaviventris

  • D. R. Webb
Article

Summary

Yellow-bellied marmots (Marmota flaviventris) were studied at three sites in central Oregon. Juveniles substantially reduced their foraging activity when equivalent black-body temperatures exceeded their upper critical temperature. Inclusion of heat stress into estimates of environmental harshness drastically reduced the differences in available foraging time between high elevation and low elevation sites.

Keywords

Heat Stress Critical Temperature High Elevation Environmental Harshness Elevation Site 

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Copyright information

© Springer-Verlag 1980

Authors and Affiliations

  • D. R. Webb
    • 1
  1. 1.Department of ZoologyOregon State UniversityCorvallisUSA

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