Sediment transport, turbidity, and dissolved oxygen responses to annual streambed drawdowns for downstream fish passage in a flood control reservoir

Schenk, Liam N.; Bragg, Heather M.

doi:10.1016/j.jenvman.2021.113068

Cited by 12 publications

(9 citation statements)

References 21 publications

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“…The physical and ecological mechanisms driving our location-and species-specific outcomes are well understood and indicate the need for future studies to focus on predictive modeling of fish habitat responses to drawdown. The observed effect of drawdown on oxythermal regimes in our study is not unusual (Nowlin et al 2004;McLaren et al 2019;Schenk and Bragg 2021), nor is the effect of those regimes on fish populations (Berge 2009;Fang et al 2012;Miranda et al 2020). Consequently, predictive, mechanistic modeling should be capable of linking and predicting the effect of drawdown with fish populations given enough knowledge of reservoir morphometry, climate, ecology, hydrology, and the fish species in question (Budy et al 2011;Klobucar and Budy 2015).…”

Section: Coefficientmentioning

confidence: 62%

“…2004; McLaren et al. 2019; Schenk and Bragg 2021), nor is the effect of those regimes on fish populations (Berge 2009; Fang et al. 2012; Miranda et al.…”

Section: Discussionmentioning

confidence: 99%

“…In addition, greater reservoir drawdown can occur, resulting in warmer epilimnetic water temperatures, a deeper thermocline, and lower hypolimnetic oxygen concentrations (Leira and Cantonati 2008; Miranda et al. 2020; Schenk and Bragg 2021). Since oxythermal regimes determine habitat availability and influence the growth of coldwater salmonid sport fish species in lentic ecosystems (Dillon et al.…”

Section: Figurementioning

confidence: 99%

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Drawdown, Habitat, and Kokanee Populations in a Western U.S. Reservoir

McLaren

Kirk²,

Mabaka

et al. 2023

N American J Fish Manag

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Greater drought frequency and severity due to climate change will result in greater drawdown of water storage reservoirs. However, changes to oxythermal regimes due to drawdown are reservoir specific and interface with fish species-specific habitat requirements, producing varying effects on coldwater fish populations. We examined the effect of drawdown on the oxythermal habitat and relative abundance of kokanee Oncorhynchus nerka, a coldwater salmonid, in Island Park Reservoir on the Henrys Fork of the Snake River, Idaho. A measure of relative kokanee abundance was negatively, exponentially related to drawdown. Oxythermal patterns measured in the reservoir during 2021, a severe drought year, revealed that drawdown reduced kokanee habitat by increasing water temperatures and decreasing dissolved oxygen concentrations. Oxythermal refugia for kokanee appeared to relate to inflow from the spring-fed Henrys Fork and other groundwater inflows. However, we did not quantify groundwater flow or connections, and we did not study kokanee population demographics or mortality. Reducing these sources of uncertainty is a priority for future study. Still, our study highlights a potential mechanism connecting reservoir drawdown to fish populations and the unique yet predictable mechanisms by which reservoir drawdown interacts with reservoir morphometry to affect fish habitat availability.

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Section: Coefficientmentioning

confidence: 62%

“…2004; McLaren et al. 2019; Schenk and Bragg 2021), nor is the effect of those regimes on fish populations (Berge 2009; Fang et al. 2012; Miranda et al.…”

Section: Discussionmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

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Drawdown, Habitat, and Kokanee Populations in a Western U.S. Reservoir

McLaren

Kirk²,

Mabaka

et al. 2023

N American J Fish Manag

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“…A variety of turbidimeter types, which are used for submerged or in-line set-ups are accessible. The obtained results of turbidity are transformed to SSC depending on the related sediment mass concentration, evaluated by the gravimetric method (SSC G ) [6][7][8]. In usual turbidimeters, which employ near-infrared radiation or visible light as an emission source, SSC measures are almost linearly related to turbidity in dilute suspensions.…”

Section: Introductionmentioning

confidence: 99%

“…The calibration of turbidimeter with standard samples of suspended sediment is crucial because spectral responses resulted from turbidimeter have not general connectivity with the SSC. The connection between SSC and turbidity is dependent on various properties of suspended sediment including grain size [9,10], color [11][12][13][14], mineralogy of the sediments [15][16][17], shape, and particle properties such as refractive index, density, and surface roughness [7,8], as well as the concentration of suspended particles. The turbidity of a suspension with a surfactant is inferior to the one without surfactant [18].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the flocculation and sedimentation of TiO2 nanoparticles in different alcoholic environments through turbidity measurements

Torghabeh

Raissi

Riahifar

et al. 2021

jcc

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Intense touristic activities exceed climate change to shape aquatic communities in a mountain lake

et al. 2023

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Mountain lakes are especially vulnerable to climate change, but are also increasingly exposed to local anthropogenic development through winter and summer tourism. In this study, we aimed to tease apart the influence of tourism from that of climate in a mountain lake located within one of the largest French ski resorts, by combining paleolimnological and present ecological data. The reconstructed long-term ecological dynamics highlighted an increase in lake biological production from the end of the Little Ice Age up to the 1950s, suggesting a historical dominance of climate control. Afterward, a major drop in pelagic production occurred at the same time as the watershed erosion increased and peaked in the 1990s, concomitant with massive digging for the ski resort expansion. The benthic invertebrates collapsed in the 1980s, concomitantly with the onset of massive salmonid stocking and recent warming. Stable isotope analyses identified benthic invertebrates as the major salmonid diet resource and suggested a possible direct impact of salmonid stocking on benthic invertebrates. However, habitat use may differ among salmonid species as suggested by the way fish DNA was preserved in surficial sediment. The high abundances of macrozooplankton further confirmed the limited reliance of salmonids on pelagic resources. The variable thermal tolerance of benthic invertebrates suggested that the recent warming may mostly affect littoral habitats. Our results indicate that winter and summer tourism may differently affect the biodiversity of mountain lakes and could collectively interfere with the ecological impacts of recent warming, making local management of primary importance to preserve their ecological integrity. Supplementary Information The online version contains supplementary material available at 10.1007/s00027-023-00968-6.

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Sediment transport, turbidity, and dissolved oxygen responses to annual streambed drawdowns for downstream fish passage in a flood control reservoir

Cited by 12 publications

References 21 publications

Drawdown, Habitat, and Kokanee Populations in a Western U.S. Reservoir

Drawdown, Habitat, and Kokanee Populations in a Western U.S. Reservoir

Investigation of the flocculation and sedimentation of TiO2 nanoparticles in different alcoholic environments through turbidity measurements

Intense touristic activities exceed climate change to shape aquatic communities in a mountain lake

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