Pre-impoundment site preparation: a study of the effects of topsoil stripping on reservoir water quality

Campbell, Peter G. C.; Bobée, Bernard; Caille, A.; Demalsy, M. J.; Demalsy, P.; Sasseville, Jean-Louis; Visser, S. A.

doi:10.1080/03680770.1974.11896247

Cited by 7 publications

(7 citation statements)

References 5 publications

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“…8B-D), suggesting that in the study area impoundment causes an initial upsurge in the proportions of P and N to other dissolved constituents (probably owing to rapid leaching from fkoodecl land) followed by a progressive decline leading to a return to normal backgrowad levels several y e a s after impoundment. The cxcess nutrients initially released into the water were at least partly avaiIabIe for aJgaJ growthg as indicated hy data from Notigi Reservoir showing an increase in the mean sumnler chlorophyll content of the water after the onset of irnpouiadment (Fable 14 ) (also see Campbell et al 1975;Ostrofslcy and Duthie 1978).…”

Section: The Nature Of the Organic-iron Complexes In Relation To The mentioning

confidence: 96%

“…There is usually an initial upsurge of biological production followed by a decline a few years later; finally, after several years, productivity may return to higher levels as long-term steady-state conditions are reestablished (Lapitsky 1968;Lowe-McConnell 1973). The initial increase in production is probably caused by release of soluble nutrients from inundated soil and vegetation (Zhadin and Gerd 196 1 ;Lowe-hlcConnel1 1973;Campbell et al 1975;Ostrofsky and Duthie 1978). The subsequent "trophic depression phase" is not well understood, but possible reasons for it include ( 1 ) exhaustion of readily available nutrients, ( 2 ) fixation of nutrients in unavailable forms by humic matter and other binding agents leached or eroded into the water from submerged soil or peat, (3) attenuation of light by dispersed humic matter or soil particles, (4) lowering of the ambient pH by hunlic matter, and (5) release of toxic organics such as phenols into the water (Baranov 196 1 ;D~ithie and Ostrofsky 1974;Hecky and Harper 1974).…”

mentioning

confidence: 99%

“…The subsequent "trophic depression phase" is not well understood, but possible reasons for it include ( 1 ) exhaustion of readily available nutrients, ( 2 ) fixation of nutrients in unavailable forms by humic matter and other binding agents leached or eroded into the water from submerged soil or peat, (3) attenuation of light by dispersed humic matter or soil particles, (4) lowering of the ambient pH by hunlic matter, and (5) release of toxic organics such as phenols into the water (Baranov 196 1 ;D~ithie and Ostrofsky 1974;Hecky and Harper 1974). Although allochthonous humic matter derived from soil occurs widely in unperturbed natural waters (Bordovskiy 1965) as well as reservoirs (Gjessing and Samdal 1968;Campbell et al 1975) and is relatively abundant in cool, moist regions, flooding could increase the concentration, or alter the inherent character, of the humic component of the water.…”

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confidence: 99%

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Depression of Primary Productivity by Humic Matter in Lake and Reservoir Waters of the Boreal Forest Zone

Jackson¹,

Hecky²

1980

Can. J. Fish. Aquat. Sci.

177

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of 611e Environmerrt and llepurtmen t of Fisheries und Oceans, Freshwuter Institute, Wintabpeg, Mun. R3T 2N6 JACKSON, T. A., AND R. E. HECKY. 1980. Depression of primary productivity by humic matter in lake and reservoir waters of the boreal forest zone. Can. J. Fish. Aquat. Sci. 37: 2300-2317.Analysis of water from backwater and main-stem regions of three reservoirs and a natural lake belonging to major river systems in northern Manitoba (Canada) showed that primary productivity was inversely related to total "dissolved" (<0.45 pm) organic carbon and nondialyzable dissolved iron. organic carbon, nitrogen, and H-bonded polymeric hydroxyl groups. The chemical data apparently represent allochthonous humic-FeOOH complexes with strong, covalent metal-ligand bonds. The results suggest that humic matter depressed primary productivity by making iron unavailable to phytoplankton, but not by attenuating light, lowering the pH, or sequestering phosphate (although the dissolved phosphorus appeared to be mostly in the form of hurnic-iron-phosphate complexes). Relatively stagnant backwater bays, where humic mater accumulates, were less productive than the more rapidly flushed, less hurnlic main-stem waters. In addition, the reservoirs, which had been formed 6 mo, 3 yr, and 14 yr prior to the tinme of sampling, revealed short-term anomalies caused by impoundment. Evidently three distinct stages of geochemical and trophic development are represented, the sequence of stages being tentatively generalized as follows for reservoirs of this region: (1) soon after impoundment, rapid leaching of nutrients from submerged land causes a brief rise in productivity and aberrantly high levels of dissolved low molecular weight phosphorus and nitrogen in the backwaters; (2) subsequently, a "pulse" of soil humic matter released more gradually into the backwaters depresses productivity by fixation of minor elements such as iron, even if the dissolved phosphorus levels are high; (3) finally, a steady state is restored when this anomalous accumulation of humic matter is removed from thewater column by sedimentation or flushing, allowing productivity to return to higher levels. But even under unperturbed natural conditions humic matter restricts the productivity of surface waters in this geographic region to a greater or lesser extent.Key wards: humic matter, organic matter, primary productivity, iron, lakes, reservoirs, nutrient availability, Canadian Shield, water quality, phytoplankton ecology JACKSQN, T. A., AND R. E. HECKY. 1980. Depression of primary productivity by humic matter in lake and reservoir waters of the boreal forest zone. Can. J. Fish. Aquat. Sci. 37: 23MI-2317.L'analyse de l'eau des regions de renvoi et de l'axe hydrographique de trois reservoirs et d'un lac nature1 faisant partie de reseaux fiuviaux majeurs du Manitoba septentrional (Canada) demontre que la productiviti primaire est en relation inverse avec le carbone organique disssous ( <0145 pm) total, le fer, le carbone organique et l'azote dissous non dialysables, et avec ...

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Section: The Nature Of the Organic-iron Complexes In Relation To The mentioning

confidence: 96%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Depression of Primary Productivity by Humic Matter in Lake and Reservoir Waters of the Boreal Forest Zone

Jackson¹,

Hecky²

1980

Can. J. Fish. Aquat. Sci.

177

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“…Effect of flooding grasslands: There are many laboratory studies which demonstrate the importance of plant nature (ferns, perennials, shrubs, trees) upon reservoir concentrations of organic matter, dissolved oxygen and nutrient salts due to differences in decomposition processes: Campbell et al (1975), Triska et al (1975), Howarth & Fischer (1976), Reed (1979), Therien et al (1982), Mouchet (1984), Crawford & Rozenberg (1984), Gunnison et al (1986) and James et al (1988). In studies of the food composition of insects from newly flooded tropical and temperate reservoirs Cherry & Guthrie (1975) and McLachlan (1977) conclude that the decline in benthic invertebrate biomass that takes place after filling is associated with a switch in their diet from terrestrial detritus to algal biomass which occurs when filling is completed.…”

Section: Laboratory Studies On Reservoir Agingmentioning

confidence: 99%

State-of-the-art of reservoir limnology and water quality management

Straškraba¹,

Tundisi

Duncan

1993

Comparative Reservoir Limnology and Water Quality Management

158

121

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The chapter presents state-of-the-art of reservoir limnology and water quality modelling and their use in reservoir water quality management. Reservoirs are classified into dam reservoirs and impoundments. The features of dam reservoirs and lakes are confronted, both qualitative (absolute) and quantitative (relative) differences being specified. Different consequences of reservoir construction for the river are outlined. Methodological problems concerning sampling and mathematical modelling are dealt with. Theoretical aspects of reservoir limnology cover the position of reservoirs in the river continuum concept, retention time as a key factor of reservoir limnology and reservoir aging (short term trophic upsurge) and long term reservoir ecosystem evolution. Pulse effects are treated as a theoretical problem with considerable consequences for reservoir management. Specific attention is devoted to multiple reservoir systems. Reservoir water quality management approaches and options as well as their use for specific reservoir uses are analyzed. The perspective for future reservoir investigations is treated.

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“…Inorganic substances may also be leached from the soil, causing further deterioration of water quality. In small water supply reservoirs, it is sometimes worthwhile to remove the vegetation and topsoil completely before flooding, in order to obtain water of good quality as soon as possible (Campbell et al, 1975;. Activities associated with the construction of the dam, such as forest clearing and the construction of access roads, may lead to increased erosion and soil leaching within the watershed, contributing further to the deterioration of water quality (Kelly et at., 1980).…”

Section: Development and Stabilization Of A New Reservoir Ecosystemmentioning

confidence: 99%

Environmental effects of reservoirs

Baxter

1985

Microbial Processes in Reservoirs

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Pre-impoundment site preparation: a study of the effects of topsoil stripping on reservoir water quality

Cited by 7 publications

References 5 publications

Depression of Primary Productivity by Humic Matter in Lake and Reservoir Waters of the Boreal Forest Zone

Depression of Primary Productivity by Humic Matter in Lake and Reservoir Waters of the Boreal Forest Zone

State-of-the-art of reservoir limnology and water quality management

Environmental effects of reservoirs

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