A lateral-displacement flume for fish behavior and stranding studies during simulated pulsed flows

Cocherell, Sarah A.; Chun, Stephanie N.; Cocherell, Dennis E.; Thompson, Lisa C.; Klimley, A. Peter; Cech, Joseph J.

doi:10.1007/s10641-011-9894-z

Cited by 10 publications

(3 citation statements)

References 21 publications

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“…These metrics are often lost in daily averages and are likely to be more relevant in assessing geomorphic changes, such as bedload scouring and creation of sandbars and gravel beds. Behavioural responses by fish to flooding typically occur within seconds to minutes (David and Closs, ; Schwartz and Herricks, ; Cocherell et al , ). In addition, the shape of the hydrograph (e.g.…”

Section: Discussionmentioning

confidence: 99%

Characterizing Sub‐Daily Flow Regimes: Implications of Hydrologic Resolution on Ecohydrology Studies

Bevelhimer

McManamay

O’Connor

2014

River Research & Apps

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Natural variability in flow is a primary factor controlling geomorphic and ecological processes in riverine ecosystems. Within the hydropower industry, there is growing pressure from environmental groups and natural resource managers to change reservoir releases from daily peaking to run‐of‐river operations on the basis of the assumption that downstream biological communities will improve under a more natural flow regime. In this paper, we discuss the importance of assessing sub‐daily flows for understanding the physical and ecological dynamics within river systems. We present a variety of metrics for characterizing sub‐daily flow variation and use these metrics to evaluate general trends among streams affected by peaking hydroelectric projects, run‐of‐river projects and streams that are largely unaffected by flow altering activities. Univariate and multivariate techniques were used to assess similarity among different stream types on the basis of these sub‐daily metrics. For comparison, similar analyses were performed using analogous metrics calculated with mean daily flow values. Our results confirm that sub‐daily flow metrics reveal variation among and within streams that are not captured by daily flow statistics. Using sub‐daily flow statistics, we were able to quantify the degree of difference between unaltered and peaking streams and the amount of similarity between unaltered and run‐of‐river streams. The sub‐daily statistics were largely uncorrelated with daily statistics of similar scope. On short temporal scales, sub‐daily statistics reveal the relatively constant nature of unaltered stream reaches and the highly variable nature of hydropower‐affected streams, whereas daily statistics show just the opposite over longer temporal scales. Published 2014. This article is a U.S. Government work and is in the public domain in the USA.

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Section: Discussionmentioning

confidence: 99%

Characterizing Sub‐Daily Flow Regimes: Implications of Hydrologic Resolution on Ecohydrology Studies

Bevelhimer

McManamay

O’Connor

2014

River Research & Apps

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“…Although studies using drift simulators for flow peak analysis (Bradford, 1997;Halleraker et al, 2003) and flood pulses (Chun et al, 2011;Cocherell et al, 2012) are common in the Northern Hemisphere, no such studies have been conducted in the Neotropical region (particularly Brazil). Therefore, assuming that the life cycle of migratory fish species depends on the characteristics and flow velocities of the rivers, this study aimed to evaluate the transport of eggs and behavior of P. lineatus larvae at different flow speeds in a drift simulator channel.…”

Section: Introductionmentioning

confidence: 99%

Egg transport and larval behavior of curimba, Prochilodus lineatus (Valenciennes, 1836; Characiformes, Prochilodontidae) in a drift simulator channel

Queiroz

Baumgartner

Piana

et al. 2022

Acta Sci. Biol. Sci.

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Landscape changes and hydrologic alterations associated with dam construction have greatly hindered reproductive success and the recruitment of migratory species. However, little is known about the flow conditions that are necessary for the reproductive success of migrators. We aimed to analyze one of the important migrants of the Paraná River, the curimba, Prochilodus lineatus (Valenciennes, 1836), to determine the minimum velocities necessary for egg drift and analyze the behavior of larvae at different flow velocities. Thus, we experimentally evaluated the behavior of eggs and larvae released in a drift simulator channel (DSC) under four flow velocities. Additionally, we investigate the swimming ability of larvae in relation to certaintheirarvaeng ability in relation to asures of larval body to their ability ased in a Drift Simulator Channel certaincerrain morphometric measures of their bodies. We also performed morphometry and calculations of larval body and fin proportions to determine which structures influence swimming ability. The results indicated that environments with flow velocities greater than 0.081 m s-1 were favorable for egg drift and increased the chances of successful transport of eggs to downstream areas. We also observed that soon after hatching, the larvae positioned themselves against the flow, indicating that they had a perception of position and orientation. The larvae were able to maintain and disperse against the flow within the channel 32h after hatching at all velocities, which was mainly due to the development of pectoral and caudal fins that were actively involved in the swimming process, as well as the reduction in the dimensions of the yolk sac, which reduced drag.

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“…In contrast, lower rates of stranding were observed at night in another mesocosm experiment (Bradford et al ), and net pen experiments completed (2004–2006) in the Columbia and Kootenay Rivers found no statistically significant effect of either ramping rate (tested range 4–35 cm/h) or time of day, but found that the period of inundation and the natural fish density in the net pen area were predictive of pool stranding rates (Irvine et al ). More recent flume experiments noted 8% stranding rates in small flumes when compared with larger flumes and also noted that flumes are unlikely to reproduce the full range of conditions observed in nature (Cocherell et al ). Fish stranding data from ecosystem scale, long‐term monitoring are therefore significant for understanding patterns of stranding responses in large river ecosystems, determining significant trends across years and species, corroborating or refuting patterns observed in mesocosms and providing scientifically relevant management advice.…”

Section: Introductionmentioning

confidence: 99%

Why do fish strand? An analysis of ten years of flow reduction monitoring data from the Columbia and Kootenay rivers, Canada

Irvine

Thorley

Westcott³

et al. 2014

River Research & Apps

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Stranding of fish due to flow reductions has been documented in the near shore of the Columbia and Kootenay Rivers, Canada, and can result in sub-lethal or lethal effects on fish. Ten years (1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)) of monitoring data have been collected at sites below two hydro-electric dams (Hugh-L-Keenleyside and Brilliant Dam) following flow reductions. A generalized linear mixed effects model analysed the probability of a stranding event in relation to environmental and operational variables including the rate of change in the water levels, the duration of shoreline inundation prior to a reduction (wetted history), the river stage, the magnitude of the reduction, distance downstream from the dam, time of day, day of year (season) and whether a site had been physically altered to mitigate stranding. The results demonstrated statistically significant effects on stranding risk from minimum river stage, day of the year and whether a site had been physically re-contoured. The combination of investigated factors giving the highest probability of stranding was a large magnitude reduction completed in the afternoon in midsummer, at low water levels when the near shore had been inundated for a long period. This research is significant in its approach to assessing years of ecosystem scale monitoring data and using the modelling results to determine ways for these findings to be applied in regulated river management to minimize fish stranding. It also highlighted data gaps that require addressing and provides ecosystem scale results to compare with stranding studies carried out in mesocosms.

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A lateral-displacement flume for fish behavior and stranding studies during simulated pulsed flows

Cited by 10 publications

References 21 publications

Characterizing Sub‐Daily Flow Regimes: Implications of Hydrologic Resolution on Ecohydrology Studies

Characterizing Sub‐Daily Flow Regimes: Implications of Hydrologic Resolution on Ecohydrology Studies

Egg transport and larval behavior of curimba, Prochilodus lineatus (Valenciennes, 1836; Characiformes, Prochilodontidae) in a drift simulator channel

Why do fish strand? An analysis of ten years of flow reduction monitoring data from the Columbia and Kootenay rivers, Canada

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