Experimental Rehabilitation of Three Concrete, Urban Stretches Streams Through Biophilic Interventions Designed: Environmental Evaluations

Silva, Alexandre Marco da; Silva, Rosiane Argenton e; Primo, Kristiane Ramos; Olimpio, Beatriz Capelo; Silva, Gabriela Bassi; Giorgio, Caroline Terzella Di

doi:10.1007/s11270-020-04957-5

Cited by 3 publications

(1 citation statement)

References 27 publications

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“…Many lotic waters in urban areas are regulated to be straight with prismatic cross sections to increase the flow conveyance and flood control (Gomes & Wai, 2020) and this is the case with manmade lotic waters such as canals. Regulation of rivers could impact natural geomorphic processes such as meandering and sediment transport and impose negative effects on biodiversity and water quality (da Silva et al., 2021). The decrease in abundance and diversity of species is also due to the loss of pools, riffles, and similar mesoscale physical habitats (Pasternack et al., 2008; Tokyay & Sinha, 2019; Gomes & Wai, 2020).…”

Section: Introductionmentioning

confidence: 99%

The deflectors influence on flow complexity, bed morphology, sediment transport and water quality of urban lotic waters ‐ A laboratory study

Sooriyaarachchi

Gomes

2022

Environmental Quality Mgmt

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In this laboratory study different combinations of bed (sand, pebble gravel [gravel], and a mix of sand and gravel) and flow (typical and overtopping) were experimented with to investigate the impact of porous deflectors in flow diversity, water quality, and fish performance in prismatic open channels. Deflectors changed the gradually varied flow to a rapidly varied flow, as a sudden change in the water depth was observed at the deflectors, and this change was large for smooth beds. With the presence of gravel, the scouring near the downstream deflector was almost twice that of the sand bed, and with the scouring at its own upstream deflector, irrespective of whether the flow was typical or overtopping. This behavior was a result of sand mobilization due to shear stress and sand mobilization aided gravel transport. The mixed bed showed less gravel movement compared to the gravel-only bed. The percentage of sediment washed out was minor for all bed scenarios, indicating that sediment transport was local. Relative to the sand bed without deflectors (representing a typical urban canal), deflectors resulted in reduced and improved water quality (in terms of sediment load) for sand, and mixed bed, respectively. The fishes found refuge and were comfortable in the pool areas created by deflectors unlike in channels without deflectors where they showed exhaustion.

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Section: Introductionmentioning

confidence: 99%

The deflectors influence on flow complexity, bed morphology, sediment transport and water quality of urban lotic waters ‐ A laboratory study

Sooriyaarachchi

Gomes

2022

Environmental Quality Mgmt

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Hydrosedimentological Balance and Modeling as Subsidy for River Recovery‐Related Actions

da Silva

2024

Environmental Quality Mgmt

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The sedimentometric dynamics are part of the environmental dynamics of a watershed and are vulnerable to local environmental changes. Hence, in this study, we (i) investigated the sedimentometric dynamic in three watersheds, (ii) proposed innovative mathematical equations for enhancing the ability to predict the sediment delivery ratio (SDR), and (iii) proposed alternatives to restore the sedimentological equilibrium. In three watersheds, we collected information concerning physiography and land use. Also, for 2 years, water samples and hydrological and sediment‐related data were systematically collected. We then computed a dataset on hydrosedimentology, especially the SDR. We elaborated two mathematical models that predict the SDR, considering the high relation between SDR and the elements of the watershed that go far beyond the “catchment area” information, normally used as basic and unique information for computing SDR values. We also proposed alternatives for environmental control and/or recovery. Such alternatives are based on the sedimentometric dynamics of the watersheds and their vulnerability to degradation. The execution of these actions is vital to provide a local sedimentometric balance and, among other gains, to recover/conserve the environmental quality of the streams and rivers that form the river network of the watershed.

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Assessing an Ecological Revitalization Project of Urban Streams in Brazilian Southeastern Region by Analytic Hierarchy Process

Primo

Silva

Olimpio

et al. 2022

Water Air Soil Pollut

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Experimental Rehabilitation of Three Concrete, Urban Stretches Streams Through Biophilic Interventions Designed: Environmental Evaluations

Cited by 3 publications

References 27 publications

The deflectors influence on flow complexity, bed morphology, sediment transport and water quality of urban lotic waters ‐ A laboratory study

The deflectors influence on flow complexity, bed morphology, sediment transport and water quality of urban lotic waters ‐ A laboratory study

Hydrosedimentological Balance and Modeling as Subsidy for River Recovery‐Related Actions

Assessing an Ecological Revitalization Project of Urban Streams in Brazilian Southeastern Region by Analytic Hierarchy Process

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