Assessment of northern bobwhite survival and fitness in the West Gulf Coastal Plain ecoregion

PloS One
Jacob W Doggett, Alexandra Locher

Abstract

In the West Gulf Coastal Plains (WGCP) northern bobwhite (Colinus virginianus) are declining faster than range-wide averages and such declines have been linked to the consequences of land management. Management for the endangered red-cockaded woodpecker (Picoides borealis) has benefitted northern bobwhite by restoring mature pine-grassland ecosystems in some areas of the region. However, at Felsenthal National Wildlife Refuge, Crossett, Arkansas, USA, the bobwhite population was not increasing despite the availability of seemingly suitable habitat from management for the endangered species. To understand factors that may be affecting bobwhite survival on Felsenthal National Wildlife Refuge we conducted a telemetry study and assessed summer survival, brood survival, and nest success from 1 April- 11 August in 2013 and 1 April- 15 August in 2014. We also calculated home-range sizes and measured microhabitat characteristics around nests. Summer survival rates were 71% (SE = 0.17) and 47% (SE = 0.14); while nest success was 47% (SE = 0.02) and 100% for 2013 and 2014, respectively. Between years, both 95% and 50% kernel home-ranges were not different (pooled, 63.92±6.07 ha and 14.94±1.75 ha); however minimum convex polygon home-rang...Continue Reading

References

Jan 1, 1990·Bulletin of Environmental Contamination and Toxicology·D H WhiteR C Simpson
Aug 17, 2006·Conservation Biology : the Journal of the Society for Conservation Biology·Daniel J TwedtA Blaine Elliott
Jul 6, 2010·Ecological Applications : a Publication of the Ecological Society of America·Theron M TerhuneJohn P Carroll
Feb 1, 1995·Oecologia·Kevin WinkerMario A Ramos

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