Integrated Valuation of Nature-Based Solutions Using TESSA: Three Floodplain Restoration Studies in the Danube Catchment

Perosa, Francesca; Gelhaus, Marion; Zwirglmaier, Veronika; Arias-Rodriguez, Leonardo F.; Zingraff‐Hamed, Aude; Cyffka, Bernd; Disse, Markus

doi:10.3390/su13031482

Cited by 16 publications

(12 citation statements)

References 34 publications

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“…A pilot project within the frame of the Danube Floodplain Project [40,96] aimed to manage the riparian vegetation at some sites of the Middle Tisza. However, their success is questionable, as here only small patches were managed by grazing, and according to our 1D and 2D modelling, longer (several km long) floodplain sections should be managed, otherwise, it has no hydrological effect.…”

Section: Suggestions For Sustainable Flood and Riparian Vegetation Ma...mentioning

confidence: 99%

“…Therefore, it is highly important to understand the physical and biological structure of riparian vegetation and to model the hydrological consequences of its alteration [36][37][38]. Applying this knowledge to riparian vegetation maintenance (e.g., forestry, invasive species clearance) vegetation management could be sustainable from the perspectives of ecology and flood control [23,[39][40][41].…”

Section: Introductionmentioning

confidence: 99%

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Increased Riparian Vegetation Density and Its Effect on Flow Conditions

Kiss,

Fehérváry

2023

Sustainability

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The physical and biological structure of riparian vegetation fundamentally influences floodplain roughness, and thus the flood velocity and flood levels of a river. The study aims to provide detailed spatial data on the vegetation density of a floodplain, and to model the effect of the actual vegetation and various scenarios on flow conditions. LiDAR data were applied to evaluate the density and roughness of the submerged understory vegetation over the densely vegetated floodplain of Lower Tisza, Hungary. Then, HEC–RAS 2D modelling was applied to analyse the effect of the actual vegetation on flow conditions. Further scenarios were also created to predict the effect of (i) invasive plant control, (ii) no maintenance, and (iii) riparian vegetation restoration (meadows). According to the results, since the 19th Century, the increased vegetation density is responsible for a 17-cm flood level increase, and if the vegetation grows even denser, a further 7 cm could be expected. As the vegetation density increases, the overbank flow velocity decreases, and the crevasses and flood conveyance zones gradually lose their function. Simultaneously, the flow velocity increases in the channel (from 1 m/s to 1.4 m/s), resulting in an incision. Applying LiDAR-based 2D flow modelling makes it possible to plan sustainable riparian vegetation maintenance (e.g., forestry, invasive species clearance) from both ecology and flood control perspectives.

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Section: Suggestions For Sustainable Flood and Riparian Vegetation Ma...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Increased Riparian Vegetation Density and Its Effect on Flow Conditions

Kiss,

Fehérváry

2023

Sustainability

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“…When floodplains are fully functional, they provide multiple benefits (termed ¨co-benefits¨following the terminology of the European Commission), which refer to 1) benefits to ecosystems, and 2) a diversity of ecosystem services that benefit society (Figure 2). The latter can include flood risk reduction, but also other social benefits such as improved water and air quality, recreation, aesthetics, or economic opportunities (e.g., agriculture) (Scholz et al, 2012a;Auerswald et al, 2019;Pugliese et al, 2020;Perosa et al, 2021).…”

Section: The Role Of Multi-benefit Projects In Social-ecological Syst...mentioning

confidence: 99%

Restoring Rivers and Floodplains for Habitat and Flood Risk Reduction: Experiences in Multi-Benefit Floodplain Management From California and Germany

Serra‐Llobet

Jähnig

Geist

et al. 2022

Front. Environ. Sci.

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Conventional flood control has emphasized structural measures such as levees, reservoirs, and engineered channels—measures that typically simplify river channels and cut them off from their floodplain, both with adverse environmental consequences. Structural measures tend to be rigid and not easily adapted to increased flooding regimes resulting from environmental change. Such actions also limit the natural hydrologic benefits of floodplains such as storing floodwaters, improving water quality, providing habitat for invertebrates and fish during periods of inundation, and supporting a multitude of cultural services. As these benefits are more widely recognized, policies are being adopted to encourage projects that reduce flood risks and restore floodplain ecosystems, while acknowledging the social-ecological context. The number of such projects, however, remains small. We assessed four multi-benefit floodplain projects (two in California, United States, and two in Germany) and characterized their drivers, history, and measures implemented. In both United States cases, the dominant driver behind the project was flood risk reduction, and ecosystem restoration followed, in one case inadvertently, in the other as a requirement to receive a subsidy for a flood risk reduction project. One German case was motivated by ecosystem restoration, but it was more widely accepted because it also offered flood management benefits. The fourth case was conceived in terms of balanced goals of flood risk reduction, ecosystem restoration, and recreation. We conclude that projects that both reduce flood risk and restore ecosystems are clearly possible and often cost-effective, and that they could be more widely implemented. The principal barriers are often institutional and regulatory, rather than technical.

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“…This may be explained by the reduced number of owners in rural mountainous area. However, even in lowlands, floodplain restoration is considered as having a higher monetary value than engineered or structural measures [117]. Furthermore, FM requires minimal resource expenditure by using nature's regional capacities [32].…”

Section: Natural Solutions As Cost-efficient Measuresmentioning

confidence: 99%

Non-Structural Flood Management in European Rural Mountain Areas—Are Scientists Supporting Implementation?

et al. 2021

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Mountain areas are highly exposed to flood risks. The latter are increasing in the context of climate change, urbanization, and land use changes. Non-structural approaches such as nature-based solutions can provide opportunities to reduce the risks of such natural hazards and provide further ecological, social, and economic benefits. However, few non-structural flood mitigation measures are implemented in rural mountain areas so far. The objective of this paper is to investigate if the scientific boundaries limit the implementation of non-structural flood management in rural mountain areas. In the study, we statistically analyzed the knowledge about flood management through a systematic literature review and expert surveys, with a focus on European rural mountain areas. Both methods showed that scientific knowledge is available for decision makers and that nature-based solutions are efficient, cost-effective, multifunctional, and have potential for large-scale implementation.

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Integrated Valuation of Nature-Based Solutions Using TESSA: Three Floodplain Restoration Studies in the Danube Catchment

Cited by 16 publications

References 34 publications

Increased Riparian Vegetation Density and Its Effect on Flow Conditions

Increased Riparian Vegetation Density and Its Effect on Flow Conditions

Restoring Rivers and Floodplains for Habitat and Flood Risk Reduction: Experiences in Multi-Benefit Floodplain Management From California and Germany

Non-Structural Flood Management in European Rural Mountain Areas—Are Scientists Supporting Implementation?

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