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Barton, David R.; Kelton, Nadia; Eedy, R.I.

doi:10.1023/a:1011423432727

Cited by 21 publications

(1 citation statement)

References 14 publications

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“…The decrease in amplitude during SD-2 occurred overnight (Figure S2c in Supporting Information S1), coinciding with a drop in wind speeds. Bioturbation from the benthic feeding fish at Durleigh may have contributed to resuspension (Barton et al, 2000), although this is unlikely as bioturbation is sporadic and would not reflect an obvious decrease when the mixers were turned off during SD-2. The decline in suspended particles during SD-2 was likely due to a combination of the mixers being turned off and reduced meteorological forcing.…”

Section: ∕3mentioning

confidence: 99%

The Effects of Surface Mixers on Stratification, Dissolved Oxygen, and Cyanobacteria in a Shallow Eutrophic Reservoir

Slavin

Wain

Bryant

et al. 2022

Water Resources Research

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Artificial mixing is a common drinking water quality management practice used in lakes and reservoirs that aims to prevent stratification, thereby reducing vertical gradients of dissolved oxygen (DO) and temperature to control cyanobacteria blooms (Visser et al., 2016) and soluble manganese concentrations (Ismail et al., 2002;Li et al., 2019). One increasingly common method is the use of top-down surface mixers, where impellers situated near the surface of the water column rotate and push a plume of well-aerated water downward. The plume displaces bottom waters and causes upwelling away from the impeller (Figure 1a), creating a circulation cell (Punnett, 1991). In principle, the circulation of the water column sustains mixed conditions and prevents the development of stratification, maintaining concentrations of DO throughout the water column, and preventing the internal loading of bioavailable nutrients and soluble metals (Wagner, 2015). The advective transport of DO through the water column by artificial circulation facilitates aerobic microbial respiration and minimizes the

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Section: ∕3mentioning

confidence: 99%

The Effects of Surface Mixers on Stratification, Dissolved Oxygen, and Cyanobacteria in a Shallow Eutrophic Reservoir

Slavin

Wain

Bryant

et al. 2022

Water Resources Research

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Physical and biological controls on fine sediment transport and storage in rivers

et al. 2018

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Excess fine sediment, comprising particles <2 mm in diameter, is a major cause of ecological degradation in rivers. The erosion of fine sediment from terrestrial or aquatic sources, its delivery to the river, and its storage and transport in the fluvial environment are controlled by a complex interplay of physical, biological, and anthropogenic factors. While the physical controls exerted on fine sediment dynamics are relatively well‐documented, the role of biological processes and their interactions with hydraulic and physicochemical phenomena has been largely overlooked. The activities of biota, from primary producers to predators, exert strong controls on fine sediment deposition, infiltration, and resuspension. For example, extracellular polymeric substances associated with biofilms increase deposition and decrease resuspension. In lower energy rivers, aquatic macrophyte growth and senescence are intimately linked to sediment retention and loss, whereas riparian trees are dominant ecosystem engineers in high energy systems. Fish and invertebrates also have profound effects on fine sediment dynamics through activities that drive both particle deposition and erosion depending on species composition and abiotic conditions. The functional traits of species present will determine not only these biotic effects but also the responses of river ecosystems to excess fine sediment. We discuss which traits are involved and put them into context with spatial processes that occur throughout the river network. While strides towards better understanding of the impacts of excess fine sediment have been made, further progress to identify the most effective management approaches is urgently required through close communication between authorities and scientists. This article is categorized under: Water and Life > Nature of Freshwater Ecosystems Water and Life > Stresses and Pressures on Ecosystems Science of Water > Water Quality

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The Common Carp, Cyprinus carpio: Effect on the Environment and the Indigenous Fish Species in Iraq

Jawad

Ziyadi

Al-Faisal

2021

Tigris and Euphrates Rivers: Their Environment From Headwaters to Mouth

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Cited by 21 publications

References 14 publications

The Effects of Surface Mixers on Stratification, Dissolved Oxygen, and Cyanobacteria in a Shallow Eutrophic Reservoir

The Effects of Surface Mixers on Stratification, Dissolved Oxygen, and Cyanobacteria in a Shallow Eutrophic Reservoir

Physical and biological controls on fine sediment transport and storage in rivers

The Common Carp, Cyprinus carpio: Effect on the Environment and the Indigenous Fish Species in Iraq

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