Application of Metapopulation Theory to Northern Bobwhite Conservation

Sands, Joseph P.; Brennan, Leonard A.; Williford, Damon; DeYoung, Randall W.; Wehland, Erin M.; Hernández, Fidel; Miller, Katherine S.

doi:10.7290/nqsp078r7g

Cited by 2 publications

(7 citation statements)

References 12 publications

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“…Choosing how to categorize studies based on study area size presented a challenge in that no formal definitions were found for these rankings. Ranch-level has been described as 2,000 ha (Sands et al 2012b); however, this approximation appears rather conservative (Perez et al 2002). Landscape-level has been described as areas encompassing approximately 1,000,000 ha (Sands et al 2012b) but consistent measures have not been seen in the literature.…”

Section: Two Decades Of Bobwhite Researchmentioning

confidence: 99%

“…Ranch-level has been described as 2,000 ha (Sands et al 2012b); however, this approximation appears rather conservative (Perez et al 2002). Landscape-level has been described as areas encompassing approximately 1,000,000 ha (Sands et al 2012b) but consistent measures have not been seen in the literature. Region is generally designated by ecoregion or as an area encompassing several landscapes.…”

Section: Two Decades Of Bobwhite Researchmentioning

confidence: 99%

“…Considering both bird density and space requirements, several models have been developed to estimate the spatial requirements of a viable population. Guthery et al (2000) suggested 800 bobwhites would be stable in approximately 650 ha; Twedt et al (2007) suggested a sustainable population of .400 birds was possible at 5,000 ha; and Sands et al (2012b) suggested that a stable population may need anywhere from 800 to 9,600 ha. Whether or not such stable populations actually exist in the tested conditions is not clear, generating concern regarding usable space and using current bobwhite research to make management decisionsstable and viable populations of quail could potentially be larger than what pasture-scale research takes into account.…”

Section: Habitat and Spacementioning

confidence: 99%

“…Population dynamics of most species are affected significantly by habitat loss and fragmentation. Bobwhite quail are no exception (Terhune et al 2010) and it may be useful to apply principles from island biogeography to examine fragmented populations (Sands et al 2012b). Smaller, more isolated, and more fragmented patches of habitat are likely to support populations more prone to extinction (Harrison and Bruna 1999).…”

Section: Referencementioning

confidence: 99%

“…Metapopulation theory postulates that dispersal by individuals from one subpopulation to another will increase the viability and persistence of the metapopulation and that the local extinction or deterioration of one subpopulation can be recovered by individuals from nearby subpopulations (Stacey et al 1997, Harrison and Bruna 1999, Martin et al 2000, Hanski and Gaggiotti 2004. It is possible that our current estimations of what bobwhite populations can handle in regard to natural mortality and harvest pressure do not take metapopulation effects into account (Sands et al 2012b). That is, a local population that sustains an annual mortality rate of 80% may only be able to do so because individuals from nearby subpopulations replenish the diminished population (source-sink dynamics).…”

Section: Referencementioning

confidence: 99%

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An Evaluation of Northern Bobwhite Conservation Research: A Call for Large-Scale Studies

Gomez

Reyna

2017

NQSP

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Northern bobwhite (Colinus virginianus) populations have declined throughout the species' range since the 1960s. Habitat loss and degradation are thought to have largely contributed to this decline by reducing the amount of space and resources required to sustain viable quail populations. Previous studies have attempted to address this issue by focusing on ranch-level management of bobwhites instead of on the effectiveness of large-scale techniques. Here, we review current and historical studies that have facilitated the implementation of management techniques on multiple scales. In doing so, we will also reveal the shortcomings of such studies by highlighting their narrowed focus on small-scale management and research, and reiterate the need for large-scale studies.

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Section: Two Decades Of Bobwhite Researchmentioning

confidence: 99%

Section: Two Decades Of Bobwhite Researchmentioning

confidence: 99%

Section: Habitat and Spacementioning

confidence: 99%

Section: Referencementioning

confidence: 99%

Section: Referencementioning

confidence: 99%

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An Evaluation of Northern Bobwhite Conservation Research: A Call for Large-Scale Studies

Gomez

Reyna

2017

NQSP

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Translocation as a Population Restoration Technique for Northern Bobwhites: A Review and Synthesis

Martin¹,

Applegate

Dailey

et al. 2017

NQSP

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Northern bobwhite (Colinus virginianus) abundance has declined precipitously for decades across much of the species range, to the point of widespread local, regional, and statewide extirpation. Because of successful translocations of other gallinaceous birds, bobwhite enthusiasts increasingly call for use of the approach. Consequently, the National Bobwhite Technical Committee (NBTC), on behalf of state agencies, requested a review and recommendation by the NBTC Science Subcommittee. Thus, our paper is co-authored by invited experts and includes reviews of peer-reviewed publications, manuscripts in these proceedings, state agency reports, experience by co-authors, and a survey of perspectives on translocations by state wildlife agency members of the NBTC. We discuss the state of science on key aspects of bobwhite conservation, offer best management practices (BMPs) for using translocation as a potential bobwhite restoration technique, and suggest ways to reduce uncertainty about implementation. We note that although conservationists

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Application of Metapopulation Theory to Northern Bobwhite Conservation

Cited by 2 publications

References 12 publications

An Evaluation of Northern Bobwhite Conservation Research: A Call for Large-Scale Studies

An Evaluation of Northern Bobwhite Conservation Research: A Call for Large-Scale Studies

Translocation as a Population Restoration Technique for Northern Bobwhites: A Review and Synthesis

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