5 Works

Data from: Nitrogen deposition alters plant–fungal relationships: linking belowground dynamics to aboveground vegetation change

Sarah L. Dean, Emily C. Farrer, D. Lee Taylor, Andrea Porras-Alfaro, Katharine N. Suding & Robert L. Sinsabaugh
Nitrogen (N) deposition rates are increasing globally due to anthropogenic activities. Plant community responses to N are often attributed to altered competitive interactions between plants, but may also be a result of microbial responses to N, particularly root-associated fungi (RAF), which are known to affect plant fitness. In response to N, Deschampsia cespitosa, a codominant plant in the alpine tundra at Niwot Ridge (CO), increases in abundance, while Geum rossii, its principal competitor, declines. Importantly,...

Data from: Time-series analysis reveals genetic responses to intensive management of razorback sucker (Xyrauchen texanus)

Thomas E. Dowling, Thomas F. Turner, Evan W. Carson, Melody J. Saltzgiver, Deborah Adams, Brian Kesner & Paul C. Marsh
Time-series analysis is used widely in ecology to study complex phenomena, and may have considerable potential to clarify relationships of genetic and demographic processes in natural and exploited populations. We explored the utility of this approach to evaluate population responses to management in razorback sucker, a long-lived and fecund, but declining freshwater fish species. A core population in Lake Mohave (Arizona-Nevada, USA) has experienced no natural recruitment for decades, and is maintained by harvesting naturally...

Data from: Phylogeographic diversification of antelope squirrels (Ammospermophilus) across North American deserts

Stacy J. Mantooth, David J. Hafner, , Brett R. Riddle & Robert W. Bryson
We investigated the biogeographic history of antelope squirrels, genus Ammospermophilus, which are widely distributed across the deserts and other arid lands of western North America. We combined range-wide sampling of all currently recognized species of Ammospermophilus with a multilocus data set to infer phylogenetic relationships. We then estimated divergence times within identified clades of Ammospermophilus using fossil-calibrated and rate-calibrated molecular clocks. Lastly, we explored generalized distributional changes of Ammospermophilus since the last glacial maximum using...

Data from: Using biogeographic history to inform conservation: the case of Preble’s meadow jumping mouse

Jason L. Malaney & Joseph A. Cook
The last Pleistocene deglaciation shaped temperate and boreal communities in North America. Rapid northward expansion into high latitudes created distinctive spatial genetic patterns within species that include closely related groups of populations that are now widely spread across latitudes, while longitudinally adjacent populations, especially those near the southern periphery, often are distinctive due to long-term disjunction. Across a spatial expanse that includes both recently colonized and long-occupied regions, we analyzed molecular variation in zapodid rodents...

Data from: The utility of CAD in recovering Gondwanan vicariance events and the evolutionary history of Aciliini (Coleoptera: Dytiscidae)

Rasa Bukontaite, Kelly B. Miller & Johannes Bergsten
Background: Aciliini presently includes 69 species of medium-sized water beetles distributed on all continents except Antarctica. The pattern of distribution with several genera confined to different continents of the Southern Hemisphere raises the yet untested hypothesis of a Gondwana vicariance origin. The monophyly of Aciliini has been questioned with regard to Eretini, and there are competing hypotheses about the intergeneric relationship in the tribe. This study is the first comprehensive phylogenetic analysis focused on the...

Registration Year

  • 2013
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Affiliations

  • University of New Mexico
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  • University of Washington
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  • University of Alaska Fairbanks
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  • University of Nevada Reno
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  • Western Illinois University
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  • Arizona State University
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  • University of Nevada, Las Vegas
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  • Swedish Museum of Natural History
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