A population viability analysis for the endangered sonoran pronghorn, <i>Antilocapra americana sonoriensis</i>

Hosack, Dennis; Miller, Philip S.; Hervert, John J.; Lacy, R. C.

doi:10.1515/mamm.2002.66.2.207

Cited by 14 publications

(17 citation statements)

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“…A 1996 population viability analysis (PVA) indicated probability of persistence for this population was strongly affected by adult survival but suggested fawn survival was perhaps even more significant (Hosack et al. ), although a more recent PVA indicates precipitation was the most important factor in population persistence (Horne et al. ).…”

Section: Discussionmentioning

confidence: 99%

Estimating Sonoran pronghorn abundance and survival with fecal DNA and capture–recapture methods

Woodruff

Lukacs

Christianson

2016

Conservation Biology

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Population abundance estimates are important for management but can be challenging to determine in low-density, wide-ranging, and endangered species, such as Sonoran pronghorn (Antilocapra americana sonoriensis). The Sonoran pronghorn population has been increasing; however, population estimates are currently derived from a biennial aerial count that does not provide survival or recruitment estimates. We identified individuals through noninvasively collected fecal DNA and used robust-design capture-recapture to estimate abundance and survival for Sonoran pronghorn in the United States from 2013 to 2014. In 2014 we generated separate population estimates for pronghorn gathered near 13 different artificial water holes and for pronghorn not near water holes. The population using artificial water holes had 116 (95% CI 102-131) and 121 individuals (95% CI 112-132) in 2013 and 2014, respectively. For all locations, we estimated there were 144 individuals (95% CI 132-157). Adults had higher annual survival probabilities (0.83, 95% CI 0.69-0.92) than fawns (0.41, 95% CI 0.21-0.65). Our use of targeted noninvasive genetic sampling and capture-recapture with Sonoran pronghorn fecal DNA was an effective method for monitoring a large proportion of the population. Our results provided the first survival estimates for this population in over 2 decades and precise estimates of the population using artificial water holes. Our method could be used for targeted sampling of broadly distributed species in other systems, such as in African savanna ecosystems, where many species congregate at watering sites.

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Section: Discussionmentioning

confidence: 99%

Estimating Sonoran pronghorn abundance and survival with fecal DNA and capture–recapture methods

Woodruff

Lukacs

Christianson

2016

Conservation Biology

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“…We describe and demonstrate the approach with Sonoran pronghorn (Antilocapra americana sonoriensis), an endangered subspecies of North American pronghorn that is of great conservation and management concern in southern Arizona and to Barry M. Goldwater Range (BMGR). Our choice of Sonoran pronghorn was influenced by 4 motivations: (1) There is an urgent need to update a previous PVA done by Hosack et al (2002), particularly related to evaluating the benefit of the captive breeding program; (2) the U. S. Fish and Wildlife Service (USFWS) has proposed to reestablish a new population within BMGR to aid in the recovery of wild Sonoran pronghorn; (3) there are now sufficient empirical data to fit population growth models and quantify uncertainty in model inputs; and (4) the relatively complex dynamics among the captive population, current wild population and proposed reestablishment of a 2 nd wild population allow for the construction of a general model/approach that can be transferred to other species of concern to the Department of Defense (DoD).…”

Section: Methodsmentioning

confidence: 99%

Linking Conservation Actions with Population Viability Models: Reducing Uncertainty to Better Predict Management Effects on Viability

Scott¹,

Garton²,

Dennis³

et al. 2011

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Morales) provided constant guidance and support throughout the length of the project. Our work could not have been successfully completed without their assistance. We appreciate the support and insight provided by members of the SERDP Scientific Advisory Board and Technical Committees, who helped provide context and ensure relevance to the military mission. We would like especially to thank the military biologists and natural resource managers who participated in, were supportive of, or advised our work, including staff at Yakima Training Center, Fort Hood, Camp Roberts, Camp San Luis Obispo, Fort Hunter Liggett, and Fort Huachuca. We are grateful to Ms. Rose Poulin (University of Idaho) and Ms. Vanetta Burton (University of Montana), who skillfully and cheerfully provided the administrative support essential for the smooth functioning of the project. We also thank the numerous undergraduate, graduate students, and collaborators that participated in this project.

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“…Sonoran pronghorn are critically endangered and without intervention are likely to become extinct within the United States (Hosack et al 2002). Planned recovery actions such as forage enhancement and water development (USFWS 1998) should consider the habitat preferences of Sonoran pronghorn.…”

Section: Management Implicationsmentioning

confidence: 99%

Home-range and habitat-use patterns of Sonoran pronghorn in Arizona

Hervert¹,

Bright²,

Henry³

et al. 2005

Wildlife Society Bulletin

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We investigated home‐range and habitat preferences of Sonoran pronghorn (Antilocapra americana sonoriensis) from 1994 to 2002 as part of a recovery program. Home‐range size varied from 43–2,873 km2, with an average of 511±665.3 (SD) km2 (n=22). We classified vegetation into 3 associations: creosote (Larrea tridentata)‐bursage (Ambrosia spp.; CB), palo verde (Cercidium spp.)‐mixed cacti (PV), or palo verde‐chain fruit cholla (Opuntia fulgida; PVC). Individual pronghorn did not use vegetation associations similarly to each other (χ422=779, P < 0.001). Most pronghorn (n=17) used PVC more than expected and used CB and PV less than or equal to availability. Those pronghorn (n=5) that used CB more than expected or equal to availability had significantly larger home ranges (=1,321 km2) than those that preferred PVC (=272.7 km2, t=86, P=0.028). We pooled locations of all pronghorn to determine the influence of season and range condition (based on rainfall) on vegetation association preference. Range condition and season influenced vegetation association use by pronghorn. Pronghorn used CB more than expected during the cool season of 1997–1998. Pronghorn used washes more than expected in all seasons and range conditions (χ2=277, P < 0.001). This information is useful to managers planning recovery actions (i.e., forage enhancement, water development, and captive breeding).

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A population viability analysis for the endangered sonoran pronghorn, Antilocapra americana sonoriensis

Cited by 14 publications

References 0 publications

Estimating Sonoran pronghorn abundance and survival with fecal DNA and capture–recapture methods

Estimating Sonoran pronghorn abundance and survival with fecal DNA and capture–recapture methods

Linking Conservation Actions with Population Viability Models: Reducing Uncertainty to Better Predict Management Effects on Viability

Home-range and habitat-use patterns of Sonoran pronghorn in Arizona

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