Effect of changes in water level on sediment pore water redox geochemistry at a reservoir shoreline

Wildman, Richard A.; Chan, Nathan W.; Dalleska, Nathan F.; Anderson, Mark T.; Hering, Janet G.

doi:10.1016/j.apgeochem.2010.10.005

Cited by 8 publications

(4 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From the 2nd impoundment stage, the inter-annual WLF increased, which would enhance the water disturbance degree. Strong water disturbance could cause the sedimentation decline of the suspended organic matter (DE CESARE et al, 2001), and speed up the decomposition of the organic matter in the sediments (WILDMAN et al, 2010). Therefore, the food quantity and quality of the macroinvertebrates would decrease (VOS et al, 2002;GODLEWSKA et al, 2003).…”

Section: The Influence Of the Water Environmental Factorsmentioning

confidence: 99%

Spatial Distribution of Macroinvertebrate Community along a Longitudinal Gradient in a Eutrophic Reservoir‐Bay during Different Impoundment Stages, China

Zhang

Cai

et al. 2012

International Review of Hydrobiology

View full text Add to dashboard Cite

The longitudinal patterns of the macroinvertebrate community in the Xiangxi Bay of the Three Gorges Reservoir (TGR) were investigated during the second (2nd) and third (3rd) impoundment stages (October 2006-July 2010, to test the effects of increased water level fluctuations (WLF) on the macroinvertebrates. By comparing to the former reports of the first (1st) impoundment stage (inter-annual WLF 4 m), we found that oligochaetes dominated in three different stages in the Xiangxi Bay. However, the total abundance of macroinvertebrates showed a dramatical decline from the 1st to 2nd stage (interannual WLF 11 m), but changed slightly from the 2nd to 3rd stage (inter-annual WLF 30 m). This indicated that higher WLF in the 2nd stage had already greatly reduced the macroinvertebrates abundance, thereby the disturbance in the 3rd stage could only slightly affect the already reduced abundance. Three longitudinal zones (the mainstream zone, the lacustrine zone and the transitional zone) were found based on the macroinvertebrate density, biomass, and taxa richness, combined with the geographical location of each site. Significant differences in density and biomass of macroinvertebrate were found among different zones (P < 0.05), yet no significant difference was found in taxa richness (P > 0.05). Two-way indicator species analysis showed that the community type in most sites varied in different seasons from the 2nd stage, exhibiting a dynamic zonation pattern, which differed with the stable pattern of the 1st stage. This seasonal feature was coupled to the seasonal changes of the WLF. IntroductionDam construction is considered as a disturbance to the former ecosystem, or the formation of a new system, by causing a series of ecological changes (BAXTER, 1977). Impoundment after dam construction will lead to slowing down of the water velocity, increasing of the transparency, depletion of the dissolved oxygen and accumulation of nutrients (BAXTER, 1977;FRIEDL and WÜEST, 2002;YE et al., 2007). These abiotic impacts in turn have biologi- cal effects, by structuring influences on the diversity, density and the overall resilience of reservoir biota (FUREY et al., 2006;MCEWEN and BUTLER, 2010). Benthic macroinvertebrates are important in aquatic ecosystem and have widely been used as indicators of variations of environmental conditions (PHIPPS et al., 1995; PELLETIER et al., 2010). They are usually affected by the sediment properties caused by the water disturbance (MCEWEN and BUTLER, 2010), and other changes of water environment factors, e.g., algal blooms, which could influence the food resources of macroinvertebrates (LOPES et al., 2000;WHITE et al., 2005).Reservoirs formed by damming rivers always differ from natural lakes in the shape of their longitudinal profiles. Natural lakes are normally deepest in the central region, whereas reservoirs are almost always deepest just upstream from the dam. Thus, a gradient would form along the longitudinal axis of the reservoir. A typical reservoir can be divided into three zones...

show abstract

Section: The Influence Of the Water Environmental Factorsmentioning

confidence: 99%

Spatial Distribution of Macroinvertebrate Community along a Longitudinal Gradient in a Eutrophic Reservoir‐Bay during Different Impoundment Stages, China

Zhang

Cai

et al. 2012

International Review of Hydrobiology

View full text Add to dashboard Cite

show abstract

“…The present metals in the sediments of a reservoir can eventually contaminate the water, when the physicochemical conditions of the hypolimnion and the benthic zone can produce processes such as desorption, dissolution of carbonates and reductive dissolution of oxides (Especially oxyhydroxides of Mn and Fe), mobilizing and releasing these metals, and other adsorbed: As and Cd [22]. In addition, the Mn and Fe can be mobilized as a product of the dissolution of sulfides generating H 2 S, a product of the reduction of mineral sulfides such as Pyrite FeS 2 [23], or can be immobilized either by adsorption to volatile sulfides in acids (AVS: soluble FeS + insoluble FeS) under conditions of sulfate reduction [24], However, compared to Fe, adsorption of Mn is usually much lower in AVS [25].…”

Section: Release Of Heavy Metals and Water Contaminationmentioning

confidence: 99%

“…In natural and artificial water bodies, such as reservoirs, sediments are important in water quality, since changes in redox conditions can dissolve oxy-hydroxides of Mn and Fe, mobilizing and releasing these metals [22]. The manganese is the third element of the most abundant transition metals in the earth's crust [58], as a transition metal it gives an important behavior at the level of oxide-reduction, and it facilitates the formation of complexes, being one of the most abundant elements of the earth's crust.…”

Section: Mn In the Sediments Of This Reservoir And Its Significancementioning

confidence: 99%

Application of the Geochemical Fractionation of Metals in Sediments for Environmental Analysis of a Water Reservoir. Case Riogrande Ii (Antioquia - Colombia)

Giraldo¹

2019

Fractionation

View full text Add to dashboard Cite

The geochemical fractionation of metals in soils and sediments corresponds to a technique to evaluate the levels of contamination and their probability of transfer to bodies of water and biota. For environmental studies in water reservoirs, the results of geochemical fractionation added to physicochemical analysis of water, can define the environmental conditions of metal release. This chapter briefly presents the concept and some fractionation techniques, with emphasis on the BCR methodology, in conjunction with other analyzes of water from the bottom of the reservoir to evaluate the dynamics of Mn mobilization in the Riogrande reservoir in Colombia, as example of practical application of Geochemical Fractionation. The highest proportions of Mn in the sediments of the Riogrande II reservoir were found in the exchangeable fraction and associated with carbonates, however the diffraction analysis did not find carbonated phases. It was concluded that the Mn in the water of the bottom of the Riogrande II reservoir originated especially by processes of desorption of Mn, in addition to reductive dissolution of oxyhydroxides.for a complete environmental study. In this chapter of the book "Fractionation", an explanation is given for the concept of Geochemical Fractionation, its importance, the BCR methodology and its application to the release of metals such as Mn in sediments, applied to the Riogrande II Water Reservoir in Colombia. The problem of water contamination in reservoirs by the release of heavy metals from sediments 2.1. Metals in sediments in water reservoirs and lakesThe sediments of the reservoirs, lakes and oceans reflect a recent environmental history, since they are geological records of climatic changes, geodynamic processes, land uses and especially human activity that positively or negatively impacted the environment. The sediments are characterized by the storage of important concentrations of heavy metals and xenobiotic substances due to their high adsorbent capacity, the product of a number of functional groups that allow them to form surface complexes. However, the potential for release and contamination of water from sediments depends on: total concentrations of all substances, environmental conditions of the bottom water (pH, ORP-Eh and organic matter) and forms in which metals are found in the sediments (metals fractions).Metals have several physicochemical properties and especially different valences, which allows them to be found in different chemical forms or fractions in solid materials such as soil, sediments and mining mud. Some of these forms or geochemical forms are more available than others; so, their release and mobilization to an aqueous phase occurs with slight changes in pH, ORP-Eh [1], temperature and electrical conductivity. The water quality of a reservoir is affected by the presence of dissolved metals and by the conditions and mechanisms of release from the soil or sediments [2], and it has been found that the physicochemical and biological properties and conditions of water ...

show abstract

“…The sediment supply of the Colorado River is uninterrupted yet seasonally variable, with ∼60% of the annual load deposited when snowmelt brings increased inflows to the reservoir in the spring. Sediment in side canyons can be expected to arrive in brief, high‐energy, “flash” floods (Wildman et al, 2010). The sediment in the Colorado River delta is not expected to contain meaningful amounts of sediment from the side canyons because side canyon sediment is generally deposited away from the thalweg in much lower volumes than sediment transported by the Colorado River.…”

Section: Sedimentation In Lake Powellmentioning

confidence: 99%

Physical, Chemical, and Mineralogical Characteristics of a Reservoir Sediment Delta (Lake Powell, USA) and Implications for Water Quality during Low Water Level

Wildman

Pratson

DeLeon³

et al. 2011

J of Env Quality

Self Cite

View full text Add to dashboard Cite

Lake Powell is a large reservoir in Utah and Arizona that has experienced large changes in water level during a recent drought. As a first step in assessing the connection between hydrologic and chemical changes at Lake Powell, we characterized the particle size and solid-phase bulk concentrations for 31 elements and 25 minerals in sediment from the inflow region and some shoreline locations by using laser diffractometry, X-ray fluorescence, elemental analysis, and X-ray diffraction Our results are consistent with previous results that show a negative correlation between particle size and concentrations of most elements and most minerals other than quartz and some feldspars. In our samples, however, solid-phase iron, rather than particle size or organic carbon, is the best predictor variable for the solid-phase concentrations of elements and minerals. Sediment characteristics vary on a scale of tens of kilometers, with fine sediment that is enriched in trace elementsnearer to the dam. These trends allow formulation of an algorithm for determining a water-level threshold below which sediment resuspension may alter water chemistry in a generic reservoir with a long and narrow sediment delta.

show abstract

Effect of changes in water level on sediment pore water redox geochemistry at a reservoir shoreline

Cited by 8 publications

References 37 publications

Spatial Distribution of Macroinvertebrate Community along a Longitudinal Gradient in a Eutrophic Reservoir‐Bay during Different Impoundment Stages, China

Spatial Distribution of Macroinvertebrate Community along a Longitudinal Gradient in a Eutrophic Reservoir‐Bay during Different Impoundment Stages, China

Application of the Geochemical Fractionation of Metals in Sediments for Environmental Analysis of a Water Reservoir. Case Riogrande Ii (Antioquia - Colombia)

Physical, Chemical, and Mineralogical Characteristics of a Reservoir Sediment Delta (Lake Powell, USA) and Implications for Water Quality during Low Water Level

Contact Info

Product

Resources

About