1. Are Road Crossings Fragmenting Populations of Clinch Dace?
- Author
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Rebecca M. Bourquin, Eric M. Hallerman, Dean F. Stauffer, Donald J. Orth, and Fish and Wildlife Conservation
- Subjects
0106 biological sciences ,Chrosomus ,Ecology ,biology ,Culvert ,010604 marine biology & hydrobiology ,05 Environmental Sciences ,Restricted distribution ,06 Biological Sciences ,Minnow ,biology.organism_classification ,010603 evolutionary biology ,01 natural sciences ,Nest ,Habitat ,Abundance (ecology) ,biology.animal ,Genetic variation ,Ecology, Evolution, Behavior and Systematics - Abstract
Chrosomus sp. cf. saylori (Clinch Dace) is a newly recognized species of minnow with a restricted distribution in southwestern Virginia. We analyzed genetic variation and abundance at paired sites above and below road crossings. Road crossings did not have a strong effect on presence, abundance, or genetic differentiation of Clinch Dace. Of all sites where Clinch Dace were found, only 1 perched culvert presented a barrier to upstream migration; however, no genetic differentiation was found between collections above and below that or any other culvert. Distribution and abundance of Clinch Dace populations were not influenced by habitat variables measured at the site level. Low abundance in small headwaters, nest association, and high mobility appear to be characteristics of this species of Chrosomus. Published (Publication status)
- Published
- 2020
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