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Publication: Fragmentation and drying ratchet down Great Plains stream fish diversity

Dates

Publication Date
2014-09-04 05:00:00
Start Date
2014-09-04 05:00:00
End Date
2014-09-04 05:00:00

Citation

Joshuah S. Perkin(Author), Keith B. Gido(Author), Katie H. Costigan(Author), Melinda D. Daniels(Author), Eric R. Johnson(Author), 2014-09-04(Publication), Publication: Fragmentation and drying ratchet down Great Plains stream fish diversity, http://onlinelibrary.wiley.com/doi/10.1002/aqc.2501/abstract

Summary

Stream fragmentation alters the structure of aquatic communities on a global scale, generally through loss of native species. Among riverscapes in the Great Plains of North America, stream fragmentation and hydrologic alteration (flow regulation and dewatering) are implicated in the decline of native fish diversity. This study documents the spatio–temporal distribution of fish reproductive guilds in the fragmented Arkansas and Ninnescah rivers of south-central Kansas using retrospective analyses involving 63 years of fish community data. Pelagic-spawning fishes declined throughout the study area during 1950–2013, including Arkansas River shiner (Notropis girardi) last reported in 1983, plains minnow (Hybognathus placitus) in 2006, [...]

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Great Plains Landscape Conservation Cooperative(Distributor)

Purpose

This study applies an ecological ratcheting framework to changes in fish community structure brought on by habitat fragmentation and hydrologic disturbance in the Great Plains, USA. The goal of this novel approach is to shed light on the mechanism(s) responsible for broad-scale and long-term declines among native and endemic Great Plains fishes as documented in other recent works. Specific objectives include: (i) testing for long-term (1950–2013) change in the probability of occurrence for cyprinid fishes belonging to common reproductive guilds in the central Great Plains, USA; (ii) assessing change in fish community structure upstream and downstream of barriers that potentially fragment longitudinal connectivity; and (iii) evaluating fish response to hydrologic desiccation during drought disturbances. The objectives of the current study are related to each of the three key components of ecological ratcheting, including change in fish distributions (i.e. response variable), fish sensitivity to droughts (i.e. disturbance), and reinforcement of observed change by fragmentation of riverscapes (i.e. human-induced mechanism that blocks resetting).

Additional Information

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Type Scheme Key
info:doi/ info:doi/ 10.1002/aqc.2501

Citation Extension

citationTypepublication
edition25
journalAquatic Conservation: Marine. Freshwater Ecosystems
languageeng
parts
typePage Number
value639-655

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