Linking environmental flows to sediment dynamics

Jalón, Diego García de; Bussettini, M.; Rinaldi, Massimo; Grant, Gordon E.; Friberg, Nikolai; Cowx, I. G.; Magdaleno, Fernando; Buijse, A.D.

doi:10.2166/wp.2016.106

Cited by 25 publications

(7 citation statements)

References 24 publications

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“…Hence, it is not estimated in this paper. (d) EV of sediment transport REBF can increase the capacity of sediment transport in river and reduce sediment deposition (de Jalón et al 2017). If sediment transport function drops due to a decline in REBF, the sediment needed to be removed by manpower.…”

Section: Sub-values Produced By Rebfmentioning

confidence: 99%

Value composition and quantitative calculation of economic value produced by river ecological base flow

Yue

Cheng

2021

Water Supply

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The definition of the economic value (EV) produced by river ecological base flow (REBF) is the role of REBF in avoiding river shrink or dry up and maintaining ecosystem health and natural process of river. Scientific and accurate establishment of quantitative method for calculating the EV produced by REBF is helpful for human to understand the benefits of REBF protection directly and optimize the allocation of water resources by means of economics. Based on the characteristics of non-consumable and multi-values of REBF, we first identified its value composition by referring to the EV classification of river. Next, we established calculation methods for each sub-value using evaluation techniques of resources and environment economics. Finally, on the basis of calculation results of sub-values and the relationship of sub-values, we determined the maximum EV supported by each kind of water requirements of REBF, and summed up all independent parts to obtain the total EV. This method can remove repeated calculation in the process of assessing the EV produced by REBF. Our results indicated that the minimum total EV produced by REBF in the Shaanxi section of the Wei River was 4.54 billion yuan in 2017, which is close to previous studies. The new method developed here should provide a better theoretical support for quantitative research of the EV produced by REBF and scientific management of limited water resources coming from river.

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Section: Sub-values Produced By Rebfmentioning

confidence: 99%

Value composition and quantitative calculation of economic value produced by river ecological base flow

Yue

Cheng

2021

Water Supply

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“…Such ideas are found in the early Building Block Methodology (King & Louw, ), the naturalized flow regime design of Jacobson and Galat (), and more recent emphasis on “functional flows” (Yarnell et al, ). Process‐based thinking has encouraged the inclusion of geomorphic considerations, such as transport processes and management of the natural sediment regime alongside the natural flow regime (e.g., de Jalón et al, ; Kondolf & Wilcock, ; Shafroth et al, ; Trush et al, ; Wohl, Bledsoe, et al, ; Yarnell et al, ). Prominent examples of geomorphically focused flow objectives exist, such as the high flow experiment protocol for the Colorado River.…”

Section: Process‐based Thinking Drives Convergent Perspectivesmentioning

confidence: 99%

Coupling landscapes and river flows to restore highly modified rivers

Whipple

Viers

2019

Water Resources Research

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Modifications to landscapes and flow regimes of rivers have altered the function, biodiversity, and productivity of freshwater ecosystems globally. Reestablishing geomorphological and hydrological conditions necessary to sustain ecosystems is a central challenge for restoration within highly altered systems. Meeting this challenge requires simultaneously addressing multiple and interacting stressors within the context of irreversible changes and socio-economic constraints. Traditionally, river restoration approaches either physically change the landscape or channel (channel-floodplain manipulation) or adjust hydrology (environmental flows), and such actions are often independent. We juxtapose these two subfields of river restoration, which have undergone parallel transformations, from goals of reproducing static representations of form and flow regime to goals of reestablishing processes. The parallel transformations have generated shared ideas, which point to benefits of coupling channel-floodplain manipulation and environmental flow actions to achieve process-based goals. Such coupling supports comprehensive river restoration efforts aimed at supporting resilient ecosystems within human dominated landscapes in a nonstationary climate. We identify four elements of coupled approaches for restoring highly modified rivers:(1) identify physical and ecological process potential given interactive effects of altered landscapes and flows;(2) consider capacity for sustaining identified processes under potential future change; (3) model alternatives for coupled restoration actions to support identified processes; and (4) evaluate alternatives using metrics representing integrative effects of coupled actions. We suggest these emergent elements contribute to the development of standard practices for restoring highly modified rivers and encourage an increasing number and quality of coupled applications.

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“…Flowing water is the engine of improvement and protection of the habitat of the river species and sediments movement (Jalón et al 2017 ). However, dam reduces sediment and nutrient movement downstream that affects channel, floodplain, and morphology of the coastal area resulting in the loss of aquatic habitats.…”

Section: Introductionmentioning

confidence: 99%

“…However, dam reduces sediment and nutrient movement downstream that affects channel, floodplain, and morphology of the coastal area resulting in the loss of aquatic habitats. Fluvial habitats are not only the result of water flow but also interaction among the water, sediment, organic material, and riverine vegetation communities (Jalón et al 2017 ). Dynamic interactions of floods and sediments are important for downstream riparian communities, but the reduction of annual floods water impacts the natural productivity of riparian areas, floodplains, and deltas.…”

Section: Introductionmentioning

confidence: 99%

Environmental flow in the context of dams and development with special reference to the Damodar Valley Project, India: a review

Hoque

Islam

Ghosh³

2022

Sustain. Water Resour. Manag.

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Environmental flow is the minimum flow required in a fluvial system to maintain its ecological health and to promote socio-economic sustainability. The present work critically examines the concept of the environmental flow in the context of dams and development using a systematic methodology to find out the previous works published during the last 3 decades (1990–2020) in different search engines and websites. The study reviews that structural interventions in the form of dams, barrages, weirs, etc. impede the natural flow of the rivers. Moreover, other forms of development such as industrialization, urbanization, and expansion of modern agriculture also exacerbate the problems of environmental flow across the world, especially in monsoon Asia. The present case of the environmental flow for the Damodar River portrays that the construction of dams and barrages under the Damodar Valley Project have significantly altered the flow duration, flood frequency, and magnitude (high-frequency low magnitude events in the post-dam period), while urban-industrial growth in the basin has polluted the river water (e.g., lower dissolved oxygen and higher biological oxygen demand). This typical alteration in the flow characteristics and water quality has threatened aquatic organisms, especially fish diversity and community structure. This review will make the readers aware of the long-term result of dam-induced fluvial metamorphosis in the environment through the assessment of environmental flow, species diversity, flow fluctuation, and river pollution. The study may be useful for policy-making for ushering in the sustainable development pattern that will attract future researchers, planners, and stakeholders.

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Linking environmental flows to sediment dynamics

Cited by 25 publications

References 24 publications

Value composition and quantitative calculation of economic value produced by river ecological base flow

Value composition and quantitative calculation of economic value produced by river ecological base flow

Coupling landscapes and river flows to restore highly modified rivers

Environmental flow in the context of dams and development with special reference to the Damodar Valley Project, India: a review

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