Analysis Data: Conservation status, genetics, and population vulnerability of Arkansas darter (Etheostoma cragini) in Colorado

Metadata Updated: November 12, 2020

Genetic, demographic, and environmental processes affect natural populations synergistically, and understanding their interplay is crucial for the conservation of biodiversity. Stream fishes in metapopulations are particularly sensitive to habitat fragmentation because persistence depends on dispersal and colonization of new habitat but dispersal is constrained to stream networks. Great Plains streams are increasingly fragmented by water diversion and climate change, threatening connectivity of fish populations in this ecosystem. We used seven microsatellite loci to describe population and landscape genetic patterns across 614 individuals from 12 remaining populations of Arkansas darter (  Etheostoma cragini) in Colorado, a candidate species for listing under the U.S. Endangered Species Act. We found small effective population sizes, low levels of genetic diversity within populations, and high levels of genetic structure, especially among basins. Both at- and between-site landscape features were associated with genetic diversity and connectivity, respectively. Available stream habitat and amount of continuous wetted area were positively associated with genetic diversity within a site, while stream distance and intermittency were the best predictors of genetic divergence among sites. We found little genetic contribution from historic supplementation efforts, and we provide a set of management recommendations for this species that incorporate a conservation genetics perspective.

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License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Date March 25, 2019
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) 2014-02-12T06:00:00.000+00:00 (publication)
Frequency Of Update

Metadata Source

Harvested from DOI Open Data

Additional Metadata

Resource Type Dataset
Metadata Date March 25, 2019
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) 2014-02-12T06:00:00.000+00:00 (publication)
Responsible Party (Point of Contact, Principal Investigator); Great Plains Landscape Conservation Cooperative (Point of Contact)
Contact Email
Guid 5717bf38e4b0ef3b7caab688
Access Constraints
Bbox East Long -102.041016
Bbox North Lat 40.979898
Bbox South Lat 37.055177
Bbox West Long -105.424805
Coupled Resource
Frequency Of Update
Licence None.
Metadata Language
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2014-02-12T06:00:00.000+00:00
Temporal Extent End 2014-02-12T06:00:00.000+00:00

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