Temperature Effects of Hypolimnial-Release Dams on Early Life Stages of Colorado River Basin Big-River Fishes

Clarkson, Robert W.; Childs, Michael R.

doi:10.1643/0045-8511(2000)000[0402:teohrd]2.0.co;2

Cited by 131 publications

(165 citation statements)

References 25 publications

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“…However, the LCR experienced relatively good production of age-0 chub during the 2003 to 2005 timeframe, and these fish appeared to recruit reasonably well into the larger size classes (Van Haverbeke and others, 2013). Main-stem water temperatures were unusually warm during to 2005(Voichik and Wright, 2007, which potentially led to increased growth rates of juvenile chub (Clarkson and Childs, 2000) and presumably higher survival rates. The 2003 to 2006 time period was also accompanied by mechanical removal of salmonids in the LCR aggregation (Coggins and others, 2011;Yard and others, 2011), as well as a systemwide decline in trout abundance (Makinster and others, 2010).…”

Section: Discussionmentioning

confidence: 99%

“…Humpback chub are obligate warm-water species with preferred spawning, hatching, and growth temperatures of 16 to 22 °C (Hamman, 1982). Depression of spring and summer water temperatures in the Colorado River following closure of Glen Canyon Dam in 1963 likely has precluded significant main-stem reproduction by humpback chub, owing to mortality during incubation (Hamman, 1982;Kaeding and Zimmerman, 1983;Marsh, 1985) and thermal shock of newly hatched larvae (Clarkson and Childs, 2000). The LCR aggregation of humpback chub has been studied extensively (Douglas and Marsh, 1996;Marsh and Douglas, 1997;Coggins and others, 2006a,b;Van Haverbeke and others, 2013;Yackulic and others, 2014).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Colorado River fish monitoring in Grand Canyon, Arizona; 2002–14 humpback chub aggregations

Persons¹,

Haverbeke²,

Dodrill³

2017

Open-File Report

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Colorado River fish monitoring in Grand Canyon, Arizona; 2002–14 humpback chub aggregations

Persons¹,

Haverbeke²,

Dodrill³

2017

Open-File Report

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“…Following the impoundment by dams, streams loss the former habitat and landscape traits and present some variations in flow regime, current velocity, water temperature, substrate and food-chain. This will bring a tremendous impact on fishes and their assemblage structure (Power et al 1996;Bonner and Wilde 2000;Clarkson and Childs 2000;Olden and Naiman 2010). In addition, these habitat alterations create conditions favorable for non-native species, which will then further alter fish assemblages via predation and competition (Marchetti and Moyle 2001;Eby et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Influences of low-head dams on the fish assemblages in the headwater streams of the Qingyi watershed, China

et al. 2012

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The influences of low-head dams on the fish assemblages were examined in this study, using fish data collected in six treatment and five reference sites at three low-head dams in the headwater streams of the Qingyi watershed, China. Comparing with those in the reference sites, local habitat variables were significantly altered by low-head dams in the treatment sites, involving wider channel (only in the impoundment area), deeper water and slower flow. Fish species richness varied significantly across seasons, not across site categories, suggesting that these low-head dams did not alter species richness. However, significant decreases in fish abundance and density were observed in the impoundment areas immediately upstream of dams, but not in the plunge areas downstream. Fish assemblage structures kept relative stability across seasons, and their significant difference between-site was only observed between the impoundment areas and the sites far from dams upstream. This variation in assemblage structures was due to the differing relative abundance of some cooccurring species; more lentic but less lotic fish was observed in the impoundment areas. The spatial and temporal patterns of fish assemblages were correlated with local habitat in this study area. Wetted width had negative correlation with fish species richness, abundance and density, respectively. Water temperature also positively affected species richness. In addition, wetted width, water depth, current velocity and substrate were the important habitat variables influencing assemblage structures. Our results suggested that, by modifying local habitat characteristics, low-head dams altered fish abundance and density in the impoundment areas immediately upstream of dam, not in the plunge areas immediately downstream, and thereby influenced fish assemblage structures in these stream segments.

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“…For congener Gila species, such as Bonytail Gila elegans, temperatures of less than 148C depressed the growth of juveniles in laboratory conditions (Kappenman et al 2012). In laboratory experiments with larval and small juvenile Humpback Chub (, 50 mm TL), Clarkson and Childs (2000) found that water temperatures of 108C led to very little growth for juvenile Humpback Chub, but at 148C growth substantially increased. From 1988 to 1994 mainstem Colorado River temperatures exceeded 108C less than 10% of the time and never exceeded 148C.…”

Section: Discussionmentioning

confidence: 98%

Body Condition of Endangered Humpback Chub in Relation to Temperature and Discharge in the Lower Colorado River

Hayes

Dodrill

Gerig

et al. 2017

Journal of Fish and Wildlife Management

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Determining the population status of endangered Humpback Chub Gila cypha is a major component of the adaptive management program designed to inform operation of Glen Canyon Dam upstream from Grand Canyon, Arizona. In recent decades, resource managers have identified a portfolio of management actions (with intermittent implementation) to promote population recovery of Humpback Chub, including nonnative fish removal, changes in water release volumes and discharge ramping schedules, and reductions in hydropower peaking operations. The Humpback Chub population in Grand Canyon has increased over this same period, causal factors for which are unclear. We took advantage of unusual hydrology in the Colorado River basin in 2011 to assess trends in juvenile Humpback Chub length-weight relationships and condition in the Colorado River below Glen Canyon Dam as well as in the unregulated Little Colorado River. Within each river, we observed higher length-weight b-parameter estimates (exponent of the standard power equation) at higher water temperatures. We also found higher slope estimates for the length-weight relationship at higher temperatures in the Little Colorado River. Slope estimates were more variable in the Colorado River, where mean water temperatures were more uniform. The next step is to examine whether Humpback Chub length-weight relationships influence population metrics such as abundance or survival. If these relationships exist, then monitoring condition in juvenile Humpback Chub would provide a quick and low-cost technique for assessing population response to planned management experiments or changing environmental conditions.

show abstract

Temperature Effects of Hypolimnial-Release Dams on Early Life Stages of Colorado River Basin Big-River Fishes

Cited by 131 publications

References 25 publications

Colorado River fish monitoring in Grand Canyon, Arizona; 2002–14 humpback chub aggregations

Colorado River fish monitoring in Grand Canyon, Arizona; 2002–14 humpback chub aggregations

Influences of low-head dams on the fish assemblages in the headwater streams of the Qingyi watershed, China

Body Condition of Endangered Humpback Chub in Relation to Temperature and Discharge in the Lower Colorado River

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