Assessing multi-scale effects of natural water retention measures on in-stream fine bed material deposits with a modeling cascade

Baldan, Damiano; Mehdi, Bano; Feldbacher, Eva; Piniewski, Mikołaj; Hauer, Christoph; Hein, Thomas

doi:10.1016/j.jhydrol.2020.125702

Cited by 9 publications

(14 citation statements)

References 97 publications

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“…Land availability and other constraints (e.g., flood protection) limit the selection of sections where restoration measures are implemented, yielding sub-optimal spatial configurations [76]. The monitoring of restoration as done in this study can support the restoration planning by determining the length of the downstream reach for which the impacts of restoration are still visible, supporting the definition of a minimum density of actions that improve the entire river system [60].…”

Section: Responses Of Structural and Functional Parameters To Restoration Measuresmentioning

confidence: 72%

“…For instance, sediment retention ponds can be located strategically in areas subjected to high soil erosion to trap sediments [59]. Alternatively, vegetated filter strips can be located on the river banks to prevent sediments carried by overland flows from being transported in the stream [60].…”

Section: Effects Of the Two-stage Ditch And The Floodplain On Structural Parametersmentioning

confidence: 99%

“…Implementing this restoration technique over longer channel reaches can result in higher sediment trapping during high flows [34], and improved channel transport capacity over low flows [57]. Hydrological models can significantly support the planning process at the catchment scale, especially when the information gained in the field monitoring is used to inform the models [60,63].…”

Section: Effects Of the Two-stage Ditch And The Floodplain On Structural Parametersmentioning

confidence: 99%

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Effects of Two-Stage Ditch and Natural Floodplains on Sediment Processes Driven by Different Hydrological Conditions

Baldan

Pucher

Akbari

et al. 2021

Water

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The two-stage ditch is a river restoration technique that aims at improving the sediment regime and lateral channel connectivity by recreating a small floodplain alongside a stream reach. This study aimed to analyze the efficiency of a two-stage ditch in improving the stream sediment structure and functions under different hydrological conditions (baseflow, post-bankfull, post-flood). Stream sediments were collected in channel sections adjacent to the two-stage ditch, adjacent to a natural floodplain along channelized reaches without inundation areas. Grain sizes, organic matter content and phosphorous (P) fractions were analyzed along with functional parameters (benthic respiration rate and P adsorption capacity, EPC0). The reach at the two-stage ditch showed no changes in sediment texture and stocks, while the floodplain reach showed higher fines and organic matter content under all hydrological conditions. The sediments in degraded reaches were more likely to be P sources, while they were more in equilibrium with the water column next to the natural floodplains and the two-stage ditch. Only functional parameters allowed for assessing the restoration effects on improving the sediment stability and functionality. Due to its sensitivity, the use of P adsorption capacity is recommended in future studies aiming at evaluating the response of river sediments to restoration measures under different hydrological conditions.

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Section: Responses Of Structural and Functional Parameters To Restoration Measuresmentioning

confidence: 72%

Section: Effects Of the Two-stage Ditch And The Floodplain On Structural Parametersmentioning

confidence: 99%

Section: Effects Of the Two-stage Ditch And The Floodplain On Structural Parametersmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Two-Stage Ditch and Natural Floodplains on Sediment Processes Driven by Different Hydrological Conditions

Baldan

Pucher

Akbari

et al. 2021

Water

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“…Field data classifying the FBMDs occurrence in a 5-level risk scale (Fig S3, Table 3; were used to train the RFs ensemble based on the predictors developed in the previous steps (Table 2), yielding an acceptable performance (Accuracy = 0.72 ± 0.02; Kappa = 0.61 ± 0.02; Allouche, Tsoar, & Kadmon, 2006). The RFs associate a high FBMDs occurrence risk with low values of high flow shear stresses (i.e., transport-limited sites), while sites with low FBMDs risk have low upstream peak sediment loads (i.e., supply limited sites; Table 3; Baldan, Mehdi, et al, 2020).…”

Section: Accepted Articlementioning

confidence: 97%

“…For this purpose, cross-sectional modifications can be implemented to increase the transport capacity of the stream (Hauer, 2015). Ponds that store water and trap sediments during intense precipitation events might reduce the stream transport capacity by lowering high flows, increasing FBMDs accumulation risk (Baldan, Mehdi, et al, 2020).…”

Section: Planning Freshwater Pearl Mussel Conservation Under Climate Changementioning

confidence: 99%

Increased sediment deposition triggered by climate change impacts freshwater pearl mussel habitats and metapopulations

Baldan

Kiesel

Hauer

et al. 2021

Journal of Applied Ecology

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Costs and benefits of landscape‐based water retention measures as nature‐based solutions to mitigating climate impacts in eastern Germany, Czech Republic, and Slovakia

et al. 2022

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In eastern Germany, the Czech Republic, and Slovakia, historic policies led to large, monocropped agricultural landscapes resulting in degradation of traditional landscapes. In the last 20 years, the expansion of urban and industrial areas has added to this degradation. The growing interest in nature‐based solutions, including water‐retention measures, is a response to reversing landscape degradation, rejuvenating ecosystem services, and mitigating the impacts of large‐scale commercial agriculture and climate change. In this study, the costs and benefits of water‐retention measures in eastern Germany, the Czech Republic, and Slovakia are assessed. Results indicate that water‐retention measures offer increased water availability over all land use classes assessed, help increase crop productivity, and aid in landscape cooling. Croplands are suggested as being the best value for money, offering the greatest volume potentials (mean = 88 million m3), cooling effects (mean = −1.6°C), and productivity gains (mean = €66 million yr−1), while also being the cheapest to implement per unit area. Differing policies in the three states will likely result in non‐uniform selection or implementation of measures. Future work should focus on local‐level studies offering greater practical messages beyond the regional‐level analysis conducted here. This work contributes to the growing body of literature assessing the costs and benefits of water‐retention measures, including the potential for landscape cooling, lowering temperature gradients, and ecosystem restoration. As the world urbanises, and as more land is converted to homogeneous cropland, such measures may prove critical in mitigating climate change, landscape drying, flood runoff, and soil and nutrient loss.

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Assessing multi-scale effects of natural water retention measures on in-stream fine bed material deposits with a modeling cascade

Cited by 9 publications

References 97 publications

Effects of Two-Stage Ditch and Natural Floodplains on Sediment Processes Driven by Different Hydrological Conditions

Effects of Two-Stage Ditch and Natural Floodplains on Sediment Processes Driven by Different Hydrological Conditions

Increased sediment deposition triggered by climate change impacts freshwater pearl mussel habitats and metapopulations

Costs and benefits of landscape‐based water retention measures as nature‐based solutions to mitigating climate impacts in eastern Germany, Czech Republic, and Slovakia

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