8 Works

Data from: Stream hierarchy defines riverscape genetics of a North American desert fish

Matthew W. Hopken, Marlis R. Douglas & Michael E. Douglas
Global climate change is apparent within the Arctic and the south-western deserts of North America, with record drought in the latter reflected within 640 000 km2 of the Colorado River Basin. To discern the manner by which natural and anthropogenic drivers have compressed Basin-wide fish biodiversity, and to establish a baseline for future climate effects, the Stream Hierarchy Model (SHM) was employed to juxtapose fluvial topography against molecular diversities of 1092 Bluehead Sucker (Catostomus discobolus)....

Data from: Post-fire changes in forest carbon storage over a 300-year chronosequence of Pinus contorta-dominated forests

Daniel M. Kashian, William H. Romme, Daniel Tinker, Monica G. Turner, Michael G. Ryan & Daniel B. Tinker
A warming climate may increase the frequency and severity of stand-replacing wildfires, reducing carbon (C) storage in forest ecosystems. Understanding the variability of post-fire C cycling on heterogeneous landscapes is critical for predicting changes in C storage with more frequent disturbance. We measured C pools and fluxes for 77 lodgepole pine (Pinus contorta Dougl. ex Loud var. latifolia Engelm.) stands in and around Yellowstone National Park (YNP) along a 300-year chronosequence to examine how quickly...

Data from: Gene flow and pathogen transmission among bobcats (Lynx rufus) in a fragmented urban landscape

Justin S. Lee, Emily W. Ruell, Erin E. Boydston, Lisa M. Lyren, Robert S. Alonso, Jennifer L. Troyer, Kevin R. Crooks & Sue VandeWoude
Urbanization can result in the fragmentation of once contiguous natural landscapes into a patchy habitat interspersed within a growing urban matrix. Animals living in fragmented landscapes often have reduced movement among habitat patches due to avoidance of intervening human development, which potentially leads to both reduced gene flow and pathogen transmission between patches. Mammalian carnivores with large home ranges, such as bobcats (Lynx rufus), may be particularly sensitive to habitat fragmentation. We performed genetic analyses...

Data from: Ecological correlates of the distribution limits of two poeciliid species across a salinity gradient

Julián Torres-Dowdall, Felipe Dargent, Corey A. Handelsman, Indar W. Ramnarine & Cameron K. Ghalambor
Identifying the environmental factors responsible for the formation of a species' distribution limit is challenging because organisms interact in complex ways with their environments. However, the use of statistical niche models in combination with the analysis of phenotypic variation along environmental gradients can help to reduce such complexity and identify a subset of candidate factors. In the present study, we used such approaches to describe and identify factors responsible for the parapatric distribution of two...

Data from: The influence of geographic heterogeneity in predation pressure on mating signal divergence in an Amazonian frog species complex

Paula A. Trillo, Keri A. Athanas, Daniel H. Goldhill, Kim L. Hoke & W. Chris. Funk
Sexual section plays an important role in mating signal divergence, but geographic variation in ecological factors can also contribute to divergent signal evolution. We tested the hypothesis that geographic heterogeneity in predation causes divergent selection on advertisement call complexity within the Engystomops petersi frog species complex. We conducted predator phonotaxis experiments at two sites where female choice is consistent with call trait divergence. Engystomops at one site produces complex calls, while the closely related species...

Data from: Local adaptation and the evolution of phenotypic plasticity in Trinidadian guppies (Poecilia reticulata)

Julián Torres-Dowdall, Corey A. Handelsman, Cameron K. Ghalambor & David N. Reznick
Divergent selection pressures across environments can result in phenotypic differentiation that is due to local adaptation, phenotypic plasticity, or both. Trinidadian guppies exhibit local adaptation to the presence or absence of predators, but the degree to which predator-induced plasticity contributes to population differentiation is less clear. We conducted common garden experiments on guppies obtained from two drainages containing populations adapted to high- and low-predation environments. We reared full-sibs from all populations in treatments simulating the...

Data from: Positive relationships between association strength and phenotypic similarity characterize the assembly of mixed-species bird flocks worldwide

Hari Sridhar, Umesh Srinivasan, Robert A. Askins, Julio Cesar Canales Delgadillo, Chao-Chieh Chen, David N. Ewert, George A. Gale, Eben Goodale, Wendy K. Gram, Patrick J. Hart, Keith A. Hobson, Richard L. Hutto, Sarath W. Kotagama, Jessie L. Knowlton, Tien Ming Lee, Charles A. Munn, Somchai Nimnuan, B. Z. Nizam, Guillaume Péron, V. V. Robin, Amanda D. Rodewald, Paul G. Rodewald, Robert L. Thomson, Pranav Trivedi, Steven L. Van Wilgenburg … & Kartik Shanker
Competition theory predicts that communities at small spatial scales should consist of species more dissimilar than expected by chance. We find a strikingly different pattern in a multi-continent dataset (55 presence-absence matrices from 24 locations) on the composition of mixed-species bird flocks, important subunits of local bird communities the world over. Using null models and randomization tests followed by meta-analysis, we find the association strength of species in flocks to be strongly related to similarity...

Data from: Characterizing genomic variation of Arabidopsis thaliana: the roles of geography and climate

Jesse R. Lasky, David L. Des Marais, John K. McKay, James H. Richards, Thomas E. Juenger & Timothy H. Keitt
Arabidopsis thaliana inhabits diverse climates and exhibits varied phenology across its range. Although A. thaliana is an extremely-well studied model species, the relationship between geography, growing season climate and its genetic variation is poorly characterized. We used redundancy analysis (RDA) to quantify the association of genomic variation [214,051 single nucleotide polymorphisms (SNPs)] with geography and climate among 1,003 accessions collected from 447 locations in Eurasia. We identified climate variables most correlated with genomic variation, which...

Registration Year

  • 2012
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Affiliations

  • Colorado State University
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  • Michigan Technological University
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  • University of Montana
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  • The Nature Conservancy
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  • The University of Texas at Austin
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  • Columbia University
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  • University of California System
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  • The Ohio State University
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  • Nature Conservation Foundation
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  • Science Applications International Corporation (United States)
    1