Determining preferred spawning habitat of the endangered Rio Grande silvery minnow by hydrological manipulation of a conservation aquaculture facility and the implications for management

Ecohydrology ◽  
2018 ◽  
Vol 11 (5) ◽  
pp. e1964 ◽  
Author(s):  
Alison M. Hutson ◽  
Louie A. Toya ◽  
Douglas Tave
Keyword(s):  
Rio Grande ◽  
Spawning Habitat ◽  
Rio Grande Silvery Minnow

scholarly journals Fish Rescue during Streamflow Intermittency May Not Be Effective for Conservation of Rio Grande Silvery Minnow

Water ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 3371
Author(s):  
Thomas P. Archdeacon ◽  
Tracy A. Diver ◽  
Justin K. Reale
Keyword(s):  
Water Quality ◽  
Dissolved Oxygen ◽  
Fish Assemblages ◽  
Sublethal Effects ◽  
Rio Grande ◽  
Quality Data ◽  
Water Quality Data ◽  
Low Dissolved Oxygen ◽  
Rio Grande Silvery Minnow ◽  
Oxygen Concentrations

Streamflow intermittency can reshape fish assemblages and present challenges to recovery of imperiled species. During streamflow intermittency, fish can be subjected to a variety of stressors, including exposure to crowding, high water temperatures, and low dissolved oxygen, resulting in sublethal effects or mortality. Rescue of fishes is often used as a conservation tool to mitigate the negative impacts of streamflow intermittency. The effectiveness of such actions is rarely evaluated. Here, we use multi-year water quality data collected from isolated pools during rescue of Rio Grande silvery minnow Hybognathus amarus, an endangered minnow. We examined seasonal and diel water quality patterns to determine if fishes are exposed to sublethal and critical water temperatures or dissolved oxygen concentrations during streamflow intermittency. Further, we determined survival of rescued Rio Grande silvery minnow for 3–5 weeks post-rescue. We found that isolated pool temperatures were much warmer (>40 °C in some pools) compared to upstream perennial flows, and had larger diel fluctuations, >10 °C compared to ~5 °C, and many pools had critically low dissolved oxygen concentrations. Survival of fish rescued from isolated pools during warmer months was <10%. Reactive conservation actions such as fish rescue are often costly, and in the case of Rio Grande silvery minnow, likely ineffective. Effective conservation of fishes threatened by streamflow intermittency should focus on restoring natural flow regimes that restore the natural processes under which fishes evolved.

Swimming Performance and Fishway Model Passage Success of Rio Grande Silvery Minnow

2010 ◽  
Vol 139 (2) ◽  
pp. 433-448 ◽  
Author(s):  
Kevin R. Bestgen ◽  
Brent Mefford ◽  
Jay M. Bundy ◽  
Cameron D. Walford ◽  
Robert I. Compton
Keyword(s):  
Swimming Performance ◽  
Rio Grande ◽  
Rio Grande Silvery Minnow

Managed spring runoff to improve nursery floodplain habitat for endangered Rio Grande silvery minnow

Ecohydrology ◽  
2019 ◽  
Vol 12 (7) ◽  
Author(s):  
Richard A. Valdez ◽  
Grace M. Haggerty ◽  
Kenneth Richard ◽  
Deanna Klobucar
Keyword(s):  
Rio Grande ◽  
Spring Runoff ◽  
Rio Grande Silvery Minnow

Reproductive Potential of Captive Rio Grande Silvery Minnow

2018 ◽  
Vol 81 (1) ◽  
pp. 47-54 ◽  
Author(s):  
Colleen A. Caldwell ◽  
Hunter Falco ◽  
William Knight ◽  
Manuel Ulibarri ◽  
William R. Gould
Keyword(s):  
Reproductive Potential ◽  
Rio Grande ◽  
Rio Grande Silvery Minnow
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