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Type: Conference Paper
Author(s): Joseph P. Sands; Stephan J. DeMaso; Leonard A. Brennan; D. L. Williford; R. W. DeYoung; E. M. Wehland; Fidel Hernandez; K. S. Miller
Editor(s): C. E. Braun; A. G. Kais
Publication Date: 2012

Northern bobwhite (Colinus virginianus) populations have declined throughout the majority of the species' range, and have experienced the largest declines in fragmented habitats, suggesting landscape scale processes may be responsible for this decline. We used the results from a stochastic population dynamics model of South Texas bobwhites as conceptual justification for use of metapopulation theory in bobwhite management. Annual quasi-extinction probabilities for isolated bobwhite populations were 0.003 (95% CI: 0.001-0.006), 0.105 (95% CI: 0.083-0.126), and 0.773 (95% CI: 0.750-0.796) for simulated populations harvested at 20, 30, and 40% annually. The probability of regional persistence at 30% harvest increased to ~ 100% in scenarios where we modeled 5 occupied hypothetical 800-ha habitat patches; however, at 40% harvest rates, probability of regional metapopulation persistence did not reach 95% until 12 habitat patches were occupied. This suggests bobwhites probably require somewhere from 800 to 9,600 ha of available habitat space to maintain 95% probability of regional metapopulation persistence as harvest varies from 0 to 40% annually. Our results have strong implications for bobwhite harvest management given the high probability of quasi-extinction of isolated populations at rates of harvest ³ 25%. Multiple patches of habitat (where individual patch size is ³ 800 ha) must be available to ensure bobwhite metapopulation persistence. © 2012, The University of Tennessee, National Bobwhite Conservation Initiative.

Online Links
Citation: Sands, J. P., S. J. DeMaso, L. A. Brennan, D. L. Williford, R. W. DeYoung, E. M. Wehland, F. Hernandez, and K. S. Miller. 2012. Application of metapopulation theory to northern bobwhite conservation, in Braun, C. E. and Kais, A. G., Quail VII: Proceedings of the Seventh National Quail Symposium. Tucson, AZ. The University of Tennessee, National Bobwhite Conservation Initiative,Knoxville, TN. p. 275-280,National Quail Symposium, VII. http://bringbackbobwhites.org/component/docman/doc_view/181-quail-vii-proceedings-of-the-seventh-national-quail-symposium?Itemid=128.

Cataloging Information

Topics:
Regions:
Keywords:
  • bobwhite quail
  • Colinus virginianus
  • Colinus virginianus
  • dispersal
  • distribution
  • fire dependent species
  • game birds
  • metapopulation dynamics
  • mortality
  • nesting
  • northern bobwhite
  • population density
  • reproduction
  • simulation modeling
  • statistical analysis
  • Texas
  • threatened and endangered species (animals)
  • wildlife habitat management
  • wildlife management
Tall Timbers Record Number: 31480Location Status: In-fileCall Number: QL696.G27 N37 2012Abstract Status: Okay, Fair use, Reproduced by permission
Record Last Modified:
Record Maintained By: FRAMES Staff (https://www.frames.gov/contact)
FRAMES Record Number: 53932

This bibliographic record was either created or modified by Tall Timbers and is provided without charge to promote research and education in Fire Ecology. The E.V. Komarek Fire Ecology Database is the intellectual property of Tall Timbers.