Influence of Hydropeaking on Invertebrates and Their Relationship With Fish Feeding Habits in a Pyrenean River

Lauters, François; Lavandier, P.; Lim, P.; Sabaton, C.; Belaud, A.

doi:10.1002/(sici)1099-1646(199611)12:6<563::aid-rrr380>3.0.co;2-m

Cited by 51 publications

(40 citation statements)

References 10 publications

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“…However in the wet season with fixed flows, we observed no differences in drift between differing sampling periods (Figure 7). Lauters et al (1996) observed that repeated hydroelectric plant peak flows reduced nocturnal activity. Perhaps our 30-days flow stabilisation period was insufficient for invertebrate assemblages to display daily periodicity to enter the drift.…”

Section: Discussionmentioning

confidence: 99%

“…Most major rivers in the world are altered by dams and flow regulation (Nilsson et al, 2005) and the number of rivers impounded for power generation has increased significantly in almost all Brazilian river basins since the 1970s (Agostinho et al, 2007). Dams and reservoirs change natural flow regimes (Agostinho et al, 2008), water quality (Lauters et al, 1996), sediment transport and substrate composition (Petts, 1984), and channel morphology and habitat diversity (Richter et al, 2003). Although dozens more large dams are proposed for Brazil, mainly in Amazonia (Empresa de Pesquisa Energética, 2010), dams are increasingly being removed in the USA because of their serious ecological effects and potential economic liabilities (Hughes, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Invertebrates downstream are affected by constant changes resulting from plant operations and may have different behaviours in the drift (Troelstrup and Hergenrader, 1990). Invertebrate drift can be stimulated by flow reductions (Cushman, 1985;Minshall and Winger, 1968) and increases (Scullion and Sinton, 1983;Lauters et al, 1996). Moreover, daily peak flow changes favour organisms best adapted to such conditions and eliminate those that are poorly adapted (Armitage, 1978).…”

Section: Introductionmentioning

confidence: 99%

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Influence of peak flow changes on the macroinvertebrate drift downstream of a Brazilian hydroelectric dam

2013

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Successive daily peak flows from hydropower plants can disrupt aquatic ecosystems and alter the composition and structure of macroinvertebrates downstream. We evaluated the influence of peak flow changes on macroinvertebrate drift downstream of a hydroelectric plant as a basis for determining ecological flows that might reduce the disturbance of aquatic biota. The aim of this study was to assess the influence of flow fluctuations on the seasonal and daily drift patterns of macroinvertebrates.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of peak flow changes on the macroinvertebrate drift downstream of a Brazilian hydroelectric dam

2013

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“…In the wet season with fixed flow, there were no significant differences in the drift between the different sample times. Lauters et al (1996) observed that repeated peak flows from a dam altered the natural behavior of the drift, reducing nocturnal activity. In our wet season experiment, perhaps the 34-day flow stabilization period was not enough for the invertebrate assemblages to colonize and begin to display a standard daily periodicity to enter into the drift.…”

Section: Discussionmentioning

confidence: 99%

Effects of flow fluctuations on the daily and seasonal drift of invertebrates in a tropical river

Castro

Hughes

Callisto

2013

Ann. Limnol. - Int. J. Lim.

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-Invertebrate drift results from several factors, including accidental dislodgement from the substratum, interaction with other invertebrates and predators, and changes in water quality, discharge and current velocity. We evaluated the degree to which flow fluctuations from dam releases altered the daily and seasonal invertebrate drift patterns in a tropical river. We collected macroinvertebrates during fixed flow rates (323 m 3 .s x1 in the wet season and 111 m 3 .s x1 in the dry season) and when peak flows fluctuated (378-481 m 3 .s x1 in the wet season and 109-173 m 3 .s x1 in the dry season) in 2010. Of the 31 924 organisms collected, 8872 individuals and 43 taxa were collected in the wet season and 23 052 and 32 taxa were collected during the dry season. Seasonality had a strong influence on invertebrate assemblage composition and structure in the drift. During fixed flow periods, drift densities were greatest in the dry season and drift taxonomic richness was greatest in the wet season. In the wet season, fluctuating flows increased nocturnal drift density and richness, but decreased diurnal richness; in the dry season, fluctuating flows decreased drift densities and diurnal richness. In conclusion, the daily and seasonal invertebrate drift patterns are influenced by dam operations that alter flows and this knowledge can be used to reduce the downstream effects of dams.

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“…Hydropeaking can also affect in-stream fish and other species. A reduction in benthic invertebrates and displacement in fry can be observed as a result of hydropeaking (Shen and Diplas 2010;Lauters et al 1996;Liebig et al 1999;Orth et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Dam-lake Operation to Optimize Fish Habitat

2015

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The existence of dams cannot be ignored. The dam-lake formed due to the construction of a dam can be considered an integrated part of the natural watershed. A question which must be answered is how to operate a dam-lake so that the negative impacts of the dam on the natural flow system are reduced and at the same time the intended purposes of the dam are efficiently met. Among many aquatic species, the fish species are probably the most highly impacted species by the construction of a dam. As a result of the dam, fish habitat can decrease resulting in low productivity to no productivity at all for some fish species. This paper presents a methodology to develop a dam-lake operation model to maximize fish habitat. This study considered the physical habitat of smallmouth bass in its adult life. The operation model is developed by linking one-dimensional hydraulics model HEC-2 and dam-lake simulation model HEC-5 with a meta-heuristic optimization algorithm, the Shuffled Frog Leaping Algorithm (SFLA). The computation of physical habitat, which is a function of habitat suitability index and some hydraulic parameters, is coded within the optimization algorithm. The model has been successfully applied to an unnamed dam-lake in the northeast of the U.S. The fish habitat for smallmouth bass in its adult life stage increases as the water surface in the dam-lake increases. Some recommendations to improve the model are discussed in the conclusions section.

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Influence of Hydropeaking on Invertebrates and Their Relationship With Fish Feeding Habits in a Pyrenean River

Cited by 51 publications

References 10 publications

Influence of peak flow changes on the macroinvertebrate drift downstream of a Brazilian hydroelectric dam

Influence of peak flow changes on the macroinvertebrate drift downstream of a Brazilian hydroelectric dam

Effects of flow fluctuations on the daily and seasonal drift of invertebrates in a tropical river

Dam-lake Operation to Optimize Fish Habitat

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