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Research

Evolutionary genetics and ecology

Current projects

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Picture of Ash Meadows from space  showing the environmental context of a single spring
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Counts of the number of distinct taxa from a set of 21 springs
Community ecology of freshwater springs
We use meta community DNA for comparative analyses of spring communities , documenting change over time, and monitoring and guiding restoration efforts. 
Paulsen and Martin. 2019. Inferences of environmental and biotic effects on patterns of alpha and beta diversity for the springs systems of Ash Meadows, Nevada. Oecologia. 
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Map of the genetics of prairie dog colonies overlaid onto estimates of the geographic distribution of niches.
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Tessellation structure of a single colony. Each cell contains a single hole.
Distribution and population genetics of prairie dogs
We use a combination of satellite imagery, drone pictures, genetics, and other data for understanding why and how colonies change over time. 
Sackett, L. C, A. Seglund, R.P. Guralnick, M.M. Mazzella*, D.M. Wagner, J.D. Busch, A.P. Martin 2014.  Evidence for two subspecies of Gunnison’s prairie dogs (Cynomys gunnisoni), and the general importance of the subspecies concept.  Biological Conservation 174: 1-11​.
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Graph shows the results of facilitated migration. Each sampled individual is assigned as either immigrant, resident, or admixed based on genetic data. Over time, the frequency of immigrant genes increased. ​
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Map shows the distribution and diversity of cutthroat trout in Colorado before 1900. Each color is a different species and each species was restricted to different drainages, with a few exceptions. 
Evolutionary rehabilitation of endangered species: cutthroat trout and Devils Hole pupfish
​Many endangered species need help. We actively intervene by using facilitated migration, reproduction to increase diversity, and propagation coupled with natural selection for increasing the persistence critically endangered species.
Keepers, K., N. Kane, and A. P. Martin. 2018. Following the fate of facilitated migration in a small desert stream. Southwestern Naturalist 

​Metcalf...A. P. Martin, 2012. Historical stocking data and 19th century DNA reveal human-induced changes to native diversity and distribution of cutthroat trout. Molecular Ecology. 
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