Climate and density-dependent drivers of recruitment in plains bison

David N. Koons, Pat Terletzky, Peter B. Adler, Michael L. Wolfe, Dustin Ranglack, Frank P. Howe, Kent Hersey, Wade Paskett, Johan T. Du Toit

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

In semiarid ecosystems ungulate densities can compound the effects of drought on forage availability, which can feed back to regulate reproduction and offspring recruitment. Climatic changes in the frequency and severity of drought could thus exacerbate these effects. Here, we use long-term data sets to examine the dual influences of population density, cohort, and climatic variation on recruitment in the Henry Mountains bison (Bison bison bison) population. We found that 1-year lagged annual precipitation had a positive effect on recruitment ( 0.032, SE 0.009) and population density had a negative effect ( -0.0023, SE 0.0004), but did not detect cohort effects. Furthermore, the effect of population density seemed to be more severe in dry relative to wet conditions, indicating that competition for forage could be severe in drought conditions. These results could help managers gain insight into the effects of climate change on bison population dynamics, and help guide the management of bison abundance on rangelands shared with cattle.

Original languageEnglish (US)
Pages (from-to)475-481
Number of pages7
JournalJournal of Mammalogy
Volume93
Issue number2
DOIs
StatePublished - Apr 1 2012

Fingerprint

Bison
bison
Climate
population density
drought
climate
Droughts
Population Density
climate change
forage
wet environmental conditions
ungulates
rangelands
managers
population dynamics
mountains
Cohort Effect
ecosystems
Climate Change
cattle

Keywords

  • Bison bison bison
  • Henry Mountains
  • Utah
  • arid
  • calf : cow ratio
  • generalized linear mixed models
  • precipitation
  • semiarid

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Animal Science and Zoology
  • Genetics
  • Nature and Landscape Conservation

Cite this

Koons, D. N., Terletzky, P., Adler, P. B., Wolfe, M. L., Ranglack, D., Howe, F. P., ... Du Toit, J. T. (2012). Climate and density-dependent drivers of recruitment in plains bison. Journal of Mammalogy, 93(2), 475-481. https://doi.org/10.1644/11-MAMM-A-281.1

Climate and density-dependent drivers of recruitment in plains bison. / Koons, David N.; Terletzky, Pat; Adler, Peter B.; Wolfe, Michael L.; Ranglack, Dustin; Howe, Frank P.; Hersey, Kent; Paskett, Wade; Du Toit, Johan T.

In: Journal of Mammalogy, Vol. 93, No. 2, 01.04.2012, p. 475-481.

Research output: Contribution to journalArticle

Koons, DN, Terletzky, P, Adler, PB, Wolfe, ML, Ranglack, D, Howe, FP, Hersey, K, Paskett, W & Du Toit, JT 2012, 'Climate and density-dependent drivers of recruitment in plains bison', Journal of Mammalogy, vol. 93, no. 2, pp. 475-481. https://doi.org/10.1644/11-MAMM-A-281.1
Koons, David N. ; Terletzky, Pat ; Adler, Peter B. ; Wolfe, Michael L. ; Ranglack, Dustin ; Howe, Frank P. ; Hersey, Kent ; Paskett, Wade ; Du Toit, Johan T. / Climate and density-dependent drivers of recruitment in plains bison. In: Journal of Mammalogy. 2012 ; Vol. 93, No. 2. pp. 475-481.
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