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Variation in vital-rate sensitivity between populations of Texas horned lizards

Content Provider	Springer Nature Link
Author	Wolf, Alexander J. Hellgren, Eric C. Schauber, Eric M. Bogosian, Victor Kazmaier, Richard T. Ruthven, Donald C. Moody, Raymond W.
Copyright Year	2014
Abstract	Demographic studies of imperiled populations can aid managers in planning conservation actions. However, applicability of findings for a single population across a species’ range is sometimes questionable. We conducted long-term studies (8 and 9 years, respectively) of 2 populations of the lizard Phrynosoma cornutum separated by 1000 km within the historical distribution of the species. The sites were a 15-ha urban wildlife reserve on Tinker Air Force Base (TAFB) in central Oklahoma and a 6000-ha wildland site in southern Texas, the Chaparral Wildlife Management Area (CWMA). We predicted a trade-off between the effect of adult survival and fecundity on population growth rate (λ), leading to population-specific contributions of individual vital rates to λ and individualized strategies for conservation and management of this taxon. The CWMA population had lower adult survival and higher fecundity than TAFB. As predicted, there was a trade-off in the effects of adult survival and fecundity on λ between the two sites; fecundity affected λ more at CWMA than at TAFB. However, adult survival had the smallest effect on λ in both populations. We found that recruitment in P. cornutum most affected λ at both sites, with hatchling survival having the strongest influence on λ. Management strategies focusing on hatchling survival would strongly benefit both populations. As a consequence, within the constraint of the need to more accurately estimate hatchling survival, managers across the range of species such as P. cornutum could adopt similar management priorities with respect to stage classes, despite intra-population differences in population vital rates.
Starting Page	619
Ending Page	631
Page Count	13
File Format	PDF
ISSN	14383896
Journal	Population Ecology
Volume Number	56
Issue Number	4
e-ISSN	1438390X
Language	English
Publisher	Springer Japan
Publisher Date	2014-09-10
Publisher Place	Tokyo
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Fecundity Life-stage simulation analysis Lizard Phrynosoma cornutum Recruitment Survival Ecology Zoology Plant Sciences Evolutionary Biology Behavioural Sciences Forestry
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics

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Development of tetranucleotide microsatellite loci and a non-invasive DNA sampling method for Texas horned lizards (Phrynosoma cornutum)

Latitudinal Variation in Life History Reveals a Reproductive Disadvantage in the Texas Horned Lizard (Phrynosoma cornutum)

Habits and behavior of the texas horned lizard, phrynosoma cornutum, harlan. i

Habits and behavior of the texas horned lizard, phrynosoma cornutum, harlan, ii

Predation release of Texas horned lizards (Phrynosoma cornutum) living in small towns (Dataset)

Data for: Thermal refugia and persistence of Texas horned lizards (Phrynosoma cornutum) in small towns (Dataset)

Genome-Scale Data Reveal Deep Lineage Divergence and a Complex Demographic History in the Texas Horned Lizard (Phrynosoma cornutum) throughout the Southwestern and Central United States

Estimation of survival rate and extinction probability for stage-structured populations with overlapping life stages

Isolation and characterization of 8 polymorphic microsatellite markers from the Greater Short-horned Lizard (Phrynosoma hernandesi)

Variation in vital-rate sensitivity between populations of Texas horned lizards

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Development of tetranucleotide microsatellite loci and a non-invasive DNA sampling method for Texas horned lizards (Phrynosoma cornutum)

Latitudinal Variation in Life History Reveals a Reproductive Disadvantage in the Texas Horned Lizard (Phrynosoma cornutum)

Habits and behavior of the texas horned lizard, phrynosoma cornutum, harlan. i

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Variation in vital-rate sensitivity between populations of Texas horned lizards