Environmental effects of reservoirs

Baxter, R. M.

doi:10.1007/978-94-009-5514-1_1

Cited by 15 publications

(8 citation statements)

References 122 publications

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“…However, their occurrence seems to vary considerably according to family and location. There is an especially significant difference between the affected reaches in rhithral and potamal river zones (Ward et a[., 1986;Baxter, 1985;Baxter and Glaude, 1980) as well as between the reservoirs with or without an equalizing dam. In a detailed study of the impacts of the Orava River impoundment (without equalizing dam), Obr (1956Obr ( ,1963Obr ( ,1972 showed considerable macrozoobenthos destruction and subsequent community stabilization and progressive increase of species richness 10 years later.…”

Section: Discussionmentioning

confidence: 99%

Downstream effect of impoundments on stoneflies: Case study of an epipotamal reach of the Jihlava river, Czech Republic

Helešic¹,

Sedlák²

1995

Regul. Rivers: Res. Mgmt.

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Different habitat types were sampled monthly at a sampling site ca. 12 km downstream from the DaleSice dam on the Jihlava River beginning before impoundment (1976)(1977)(1978), prior to the addition of heated wastewaters to the reservoir (1984-1985) and from 1987 to 1989. Plecoptera was one of the model groups of macrozoobenthos that significantly responded to changed conditions of flow, temperature and chemistry of river water. There was an increase in species richness (from five to 14 species), species diversity (about double), density and biomass (about 18 to 40 times greater). The study area was originally an epipotamal (barbel) zone with a typical Plecoptera species composition-Perla burmersteriana, Isoperla grammatica, Nemoura cinerea , Leuctra digitata and L. fusca. After river impoundments the investigated reach is a typical metarhithral (grayling) zone. Production of the Plecoptera community in the river reaches affected by the dams increased (riffle, from 1.37 to 23.53; pool, from 0.26 to 6.98 gm-* y-'). It was similar to production in a rhithral (trout or grayling) zone with a typical species composition of rheophilic and cold-water species (e.g. Perlodes microcephala, Isoperla diflormis, I. oxylepis, Siphonoperla torrentium, Amphinemura borealis).

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Section: Discussionmentioning

confidence: 99%

Downstream effect of impoundments on stoneflies: Case study of an epipotamal reach of the Jihlava river, Czech Republic

Helešic¹,

Sedlák²

1995

Regul. Rivers: Res. Mgmt.

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“…Since hydroelectric power plays an increasingly important part in the economy of Ethiopia, this lack of information could pose problems for water and fishery management because reservoirs differ from natural lakes in a number of ways (see e.g. Baxter, 1985).…”

Section: Introductionmentioning

confidence: 99%

Some limnological observations on two Ethiopian hydroelectric reservoirs: Koka (Shewa administrative district) and Finchaa (Welega administrative district)

Mesfin

Tudorancea

Baxter³

1988

Hydrobiologia

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Koka Reservoir in the Ethiopian Rift Valley (altitude about 1600 m) appears to be similar to natural lakes in the region. Its water is turbid because of suspended inorganic material. At the time of measurement it was supersaturated with oxygen to a depth of about 8 m, and displayed a pronounced conductivity stratification, due probably to the incomplete mixing of two inflows. The phytoplankton was dominated by Microcystis. The zooplankton was of low diversity but abundant. There was a large population of benthic invertebrates.Finchaa Reservoir in west central Ethiopia (altitude about 2200 m) is very different. It covers the former Ch'omen Swamp and so contains many floating islands and large quantities of decomposing vegetation, causing undersaturation with oxygen even at the surface. The water is somewhat turbid owing to the presence of organic debris, of low conductivity, slightly acidic, and apparently calcium-dominated. A species of Microcystis was the most abundant phytoplankter. The zooplankton was sparse and of very low diversity. There were almost no benthic invertebrates.

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“…The traditional hydro technology harnesses the power of the water's potential energy from head differences by building dams and water storage. It is noteworthy that dams and barriers have a negative impact on the environment and produce a significant ecological footprint by blocking fish migration paths and modifying the climate in their vicinity [50,51] while the need for extensive land for dam construction can exterminate wildlife and is costly [16,52].…”

Section: Hydropower Energy Extraction Techniquementioning

confidence: 99%

Global renewable energy and its potential in Malaysia: A review of Hydrokinetic turbine technology

Behrouzi

Nakisa

Maimun

et al. 2016

Renewable and Sustainable Energy Reviews

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Environmental effects of reservoirs

Cited by 15 publications

References 122 publications

Downstream effect of impoundments on stoneflies: Case study of an epipotamal reach of the Jihlava river, Czech Republic

Downstream effect of impoundments on stoneflies: Case study of an epipotamal reach of the Jihlava river, Czech Republic

Some limnological observations on two Ethiopian hydroelectric reservoirs: Koka (Shewa administrative district) and Finchaa (Welega administrative district)

Global renewable energy and its potential in Malaysia: A review of Hydrokinetic turbine technology

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