Geochemical signature and properties of sediment sources and alluvial sediments within the Lago Paranoá catchment, Brasilia DF: A study on anthropogenic introduced chemical elements in an urban river basin

Franz, C.; Makeschin, Franz; Weiß, Holger; Lorz, Carsten

doi:10.1016/j.scitotenv.2013.02.077

Cited by 29 publications

(19 citation statements)

References 18 publications

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“…In general, studies show that the pH of sediments is closely related to source material from various types of land use (Franz et al, 2013;Cao et al, 2011). While some studies reported low pH values (<7) in sediments that originated from agriculture and forestry sites (Romero-Diaz, 2012;Zhao et al, 2014), others found neutral or slightly alkaline pH values (≥7) in material washed down from urban and/or construction sites (Franz et al, 2013). Similarly, one of the reasons for the neutral and slightly alkaline reaction of sediments in this study can be related to the construction of several large dams and the road network within the CRW, probably resulting from the use of calcareous building materials, like cement or plaster.…”

Section: Discussionmentioning

confidence: 99%

Physical and chemical properties of recently deposited sediments in the reservoir of the Borçka Dam in Artvin, Turkey

Turgut¹,

Özalp²,

Köse³

2015

Turk J Agric For

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IntroductionSediment is described as solid particles generated by the disintegration process of organic and inorganic materials (Bortone, 2006). These particles, found in various shapes and sizes, can be transported by water, wind, glaciers, and other natural causes (Montgomery et al., 2000). Sediment deposited in deltas and reservoirs are generally fine-grained (sand, silt, and clay) (Kamarudin et al., 2009;Tigrek and Aras, 2011). The sedimentation process depends on the flow regime and flow rate of the river (Kamarudin et al., 2009). Natural rivers are considered balanced with respect to sediment and water inflow and outflow. However, when rivers are controlled, especially by the construction of large dams, this balance can be dramatically changed (Morris and Fan, 1998). The alteration of the natural flow regime leads to changes to the hydrological, geomorphological, and ecological conditions both upstream and downstream (Galay, 1983;Graf, 2006;Magilligan et al., 2013;Csiki and Rhoads, 2014;. Dam construction in rivers decreases velocity, causing a sedimentation increase upstream of the dam. This reduces the storage capacity of reservoirs, thus negatively influencing other benefits of large dams, such as water supply, power production, and flood control (Morris and Fan, 1998). Sedimentation can change geomorphological conditions upstream of reservoir areas. For example, sediments deposited along riverbanks due to reduced flow will narrow the cross-section of a river before it reaches the reservoir, while the accumulated sediments can change the terrain of the bottom of the reservoir (Ryan, 1991;Csiki and Rhoads, 2014). Changes in the amount and composition of sediment, carrying

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Section: Discussionmentioning

confidence: 99%

Physical and chemical properties of recently deposited sediments in the reservoir of the Borçka Dam in Artvin, Turkey

Turgut¹,

Özalp²,

Köse³

2015

Turk J Agric For

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“…Grygar et al ., ) or to fingerprint source contribution to the deposition (e.g. Krause et al ., ; Lopez et al ., ; Tripathi et al ., ; Franz et al ., ). In the present case study differences in Ba, Ce and the Rb/Sr ratio indicated a clear change in the source material of the deposited alluvial sediments.…”

Section: Discussion and Interpretationmentioning

confidence: 97%

Holocene river and slope activity in the Visoko Basin, Bosnia‐Herzegovina – climate and land‐use effects

Dreibrodt

Lubos

Hofmann³

et al. 2013

J Quaternary Science

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Alluvial and colluvial deposits were investigated at prehistoric tells close to the Bosna River. The chronology is based on ten radiocarbon ages, five optically stimulated luminescence ages, and on the archaeological record. Fluvial activity of the Bosna River is indicated by overbank fines [ca. 5000 (±1000) BC, 500 BC until today] and a phase of lateral displacement of the river bed with subsequent channel fills ca. 2000–500 BC. Early Holocene fluvial activity was probably triggered by climatic variability but might have promoted the expansion of Neolithic societies into the Visoko Basin. Mid‐ to late Holocene river activity occurred under increased climatic aridity but coincided with the expansion of prehistoric settlements to a wider area of the river basin on hard rocks in the adjacent mountainous areas. The destruction of the thin soil cover in the mountains is discussed as a probable trigger for enduring subsequent river activity. This is also indicated by a change in the geochemical signature of the alluvial sediments. The proposed mechanism might explain the mid to late Holocene river history in other regions. The potential of geochemical analyses and diachronous high‐resolution archaeological records to make inferences regarding sediment sources and geomorphological processes is demonstrated. Copyright © 2013 John Wiley & Sons, Ltd.

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“…There is little agricultural and industrial activity within the drainage basin, causing only minor contamination of the lake by agricultural or industrial pollutants (Grisolia and Starling, 2001). However, extensive construction and the subsequent urbanization have significantly increased the lake's load with anthropogenic metals, such as Pb (Franz et al, 2013;Gioia et al, 2006).…”

Section: Study Sitementioning

confidence: 99%

Tracing and tracking wastewater-derived substances in freshwater lakes and reservoirs: Anthropogenic gadolinium and geogenic REEs in Lake Paranoá, Brasilia

Merschel

Bau

Baldewein

et al. 2015

Comptes Rendus. Géoscience

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Geochemical signature and properties of sediment sources and alluvial sediments within the Lago Paranoá catchment, Brasilia DF: A study on anthropogenic introduced chemical elements in an urban river basin

Cited by 29 publications

References 18 publications

Physical and chemical properties of recently deposited sediments in the reservoir of the Borçka Dam in Artvin, Turkey

Physical and chemical properties of recently deposited sediments in the reservoir of the Borçka Dam in Artvin, Turkey

Holocene river and slope activity in the Visoko Basin, Bosnia‐Herzegovina – climate and land‐use effects

Tracing and tracking wastewater-derived substances in freshwater lakes and reservoirs: Anthropogenic gadolinium and geogenic REEs in Lake Paranoá, Brasilia

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