5 Works

Data from: Species distribution models of an endangered rodent offer conflicting measures of habitat quality at multiple scales

William T. Bean, R. Stafford, H. Scott Butterfield, Laura R. Prugh, Michael Westphal & Justin S. Brashares
1. The high cost of directly measuring habitat quality has led ecologists to test alternate methods for estimating and predicting this critically important ecological variable. In particular, it is frequently assumed but rarely tested that models of habitat suitability (“species distribution models”, SDMs) may provide useful indices of habitat quality, either from an individual animal or manager’s perspective. Critically, SDMs are increasingly used to estimate species’ ranges, with an implicit assumption that areas of high...

Data from: Speciation, population structure, and demographic history of the Mojave Fringe-toed Lizard (Uma scoparia), a species of conservation concern

Andrew D. Gottscho, Sharyn B. Marks & William Bryan Jennings
The North America deserts were impacted by both Neogene plate tectonics and Quaternary climatic fluctuations, yet it remains unclear how these events influenced speciation in this region. We tested published hypotheses regarding the timing and mode of speciation, population structure, and demographic history of the Mojave Fringe-toed Lizard (Uma scoparia), a sand dune specialist endemic to the Mojave Desert of California and Arizona. We sampled 109 individual lizards representing 22 insular dune localities, obtained DNA...

Data from: Complex phylogeography and historical hybridization between sister taxa of freshwater sculpin (Cottus).

Jason Baumsteiger, Andrew P. Kinziger, Stewart B. Reid & Andres Aguilar
Species ranges which span different geographic landscapes frequently contain cryptic species or population-level structure. Identifying these possible diversification factors can often be accomplished under a comparative phylogeographic framework. However comparisons suffer if previous studies are limited to a particular group or habitat type. In California, a complex landscape has led to several phylogeographic breaks, primarily in terrestrial species. However two sister taxa of freshwater fish, riffle sculpin (Cottus gulosus) and Pit sculpin (C. pitensis), display...

Data from: Multiple plant traits shape the genetic basis of herbivore community assembly

Matthew A. Barbour, Mariano A. Rodriguez-Cabal, Elizabeth T. Wu, Riitta Julkunen-Tiitto, Carol E. Ritland, Allyson E. Miscampbell, Erik S. Jules & Gregory M. Crutsinger
1. Community genetics research has posited a genetic basis to the assembly of ecological communities. For arthropod herbivores in particular, there is strong support that genetic variation in host plants is a key factor shaping their diversity and composition. However, the specific plant phenotypes underlying herbivore responses remain poorly explored for most systems. 2. We address this knowledge gap by examining the influence of both genetic and phenotypic variation in a dominant host-plant species, Salix...

Data from: Pushing the limits to tree height: could foliar water storage compensate for hydraulic constraints in Sequoia sempervirens

Hiroaki Ishii, Wakana Azuma, Keiko Kuroda, Stephen C. Sillett & H. Roaki Ishii
1. The constraint on vertical water transport is considered an important factor limiting height growth and maximum attainable height of trees. Here we show evidence of foliar water storage as a mechanism that could partially compensate for this constraint in Sequoia sempervirens, the tallest species. 2. We measured hydraulic and morpho-anatomical characteristics of foliated shoots of tall S. sempervirens trees near the wet, northern and dry, southern limits of its geographic distribution in California, USA....

Registration Year

  • 2014
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Affiliations

  • Humboldt State University
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  • University of Eastern Finland
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  • University of California, Merced
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  • University of California, Berkeley
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  • University of Alaska Fairbanks
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  • Bureau of Land Management
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  • National University of Comahue
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  • University of British Columbia
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  • Kobe University
    1