| phylogeographic structure of the dunes sagebrush lizard, an endemic habitat specialist. | phylogeographic divergence and population genetic diversity within species reflect the impacts of habitat connectivity, demographics, and landscape level processes in both the recent and distant past. characterizing patterns of differentiation across the geographic range of a species provides insight on the roles of organismal and environmental traits in evolutionary divergence and future population persistence. this is particularly true of habitat specialists where habitat availability and reso ... | 2020 | 32936819 |
| linking irreplaceable landforms in a self-organizing landscape to sensitivity of population vital rates for an ecological specialist. | irreplaceable, self-organizing landforms and the endemic and ecologically specialized biodiversity they support are threatened globally by anthropogenic disturbances. although the outcome of disrupting landforms is somewhat understood, little information exists that documents population consequences of landform disturbance on endemic biodiversity. conservation strategies for species dependent upon landforms have been difficult to devise because they require understanding complex feedbacks that c ... | 2015 | 25472888 |
| landscape pattern determines neighborhood size and structure within a lizard population. | although defining population structure according to discrete habitat patches is convenient for metapopulation theories, taking this approach may overlook structure within populations continuously distributed across landscapes. for example, landscape features within habitat patches direct the movement of organisms and define the density distribution of individuals, which can generate spatial structure and localized dynamics within populations as well as among them. here, we use the neighborhood c ... | 2013 | 23441217 |
| direct and indirect effects of petroleum production activities on the western fence lizard (sceloporus occidentalis) as a surrogate for the dunes sagebrush lizard (sceloporus arenicolus). | the dunes sagebrush lizard (sceloporus arenicolus) is a habitat specialist of conservation concern limited to shin oak sand dune systems of new mexico and texas (usa). because much of the dunes sagebrush lizard's habitat occurs in areas of high oil and gas production, there may be direct and indirect effects of these activities. the congeneric western fence lizard (sceloporus occidentalis) was used as a surrogate species to determine direct effects of 2 contaminants associated with oil and gas d ... | 2016 | 26456391 |
| review of the systematic status of sceloporus arenicolus degenhardt and jones, 1972 with an estimate of divergence time. | the sagebrush lizards (sceloporus graciosus group) consist of four taxa (s. graciosus graciosus, s. graciosus gracilis, s. graciosus vandenburgianus, and s. arenicolus) distributed in western north america. of these, s. arenicolus is morphologically, behaviorally, and ecologically distinct as well as geographically disjunct from the other taxa, occurring only in the mescalero-monahans sandhills of southeastern new mexico and adjacent texas. sceloporus arenicolus is a taxon of concern because of ... | 2013 | 26266303 |