Data from: Artificial barriers prevent genetic recovery of small isolated populations of a low-mobility freshwater fish

Rhys A. Coleman, Bertrand Gauffre, Alexandra Pavlova, Luciano B. Beheregaray, Joanne Kearns, Jarod Lyon, Minami Sasaki, Raphael Leblois, Carla Sgro & Paul Sunnucks
Habitat loss and fragmentation often result in small, isolated populations vulnerable to environmental disturbance and loss of genetic diversity. Low genetic diversity can increase extinction risk of small populations by elevating inbreeding and inbreeding depression, and reducing adaptive potential. Due to their linear nature and extensive use by humans, freshwater ecosystems are especially vulnerable to habitat loss and fragmentation. Although the effects of fragmentation on genetic structure have been extensively studied in migratory fish, they...
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