Vegetation and longitudinal coarse sediment connectivity affect the ability of ecosystem restoration to reduce riverbank erosion and turbidity in drinking water

McMahon, Joe; Olley, Jon; Brooks, Andrew Pattrick; Smart, James C. R.; Stewart‐Koster, Ben; Venables, W. N.; Curwen, Graeme; Kemp, Justine; Stewart, Morag; Saxton, Nina Elizabeth; Haddadchi, Arman; Stout, Justin C.

doi:10.1016/j.scitotenv.2019.135904

Cited by 27 publications

(14 citation statements)

References 87 publications

(119 reference statements)

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“…The presence of vegetation in an area, especially water catchment, is noted to reduce runoffs and soil erosion, thereby reducing turbidity. This has been confirmed by a recent study by McMahon et al (2020) that vegetation could reduce riverbank erosion, and therefore contribute to reducing turbidity.…”

Section: Water Quality and Lulcc In The Nawuni Catchmentsupporting

confidence: 74%

Effect of land use and land cover changes on water quality in the Nawuni Catchment of the White Volta Basin, Northern Region, Ghana

2020

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Pollution of freshwater resources is gaining global attention due to increasing freshwater stress and scarcity. This study assessed land use and land cover changes (LULCC) in the Nawuni Catchment of the White Volta Basin and how the change affects water quality in the area. Satellite images from Landsat Thematic Mapper and Landsat 8 Operational land imager of the Nawuni Catchment of the White Volta Basin were acquired and used for this study. These images were analysed to ascertain the influence of land use and land cover changes on water quality parameters such as turbidity, ammonia and total coliform counts for a 10-year period (2007 to 2017). The results of LULCC revealed an increased expanse of grassland/farmland (4.1%), settlement (0.1%), bare land (9.4%) and closed savannah (1.2%), whilst opened savannah (14.7%) and water body (0.1%) recorded a decreasing trend. The study showed an increase in the levels of turbidity and ammonia and a decrease in total coliforms over the study period (2007 to 2017). The study also revealed a positive relationship between LULC categories and water quality parameters, implying that LULCC contribute to the change in water quality in the area. The study therefore recommends frequent water quality monitoring and LULC planning and management to curb pollution of the river basin.

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Section: Water Quality and Lulcc In The Nawuni Catchmentsupporting

confidence: 74%

Effect of land use and land cover changes on water quality in the Nawuni Catchment of the White Volta Basin, Northern Region, Ghana

2020

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“…When we analyzed the PFF together with land use, we noticed that areas where the basin presented high erosive potential were accompanied by an absence of native vegetation, resulting in lower ESI. According to McMahon et al [57], this relationship between the inclination of the slope and vegetation intervenes in the dynamic effects of the slope; indeed, areas that present larger declivities with an absence of vegetation are predisposed to erosive processes. The consequences of erosion include the pollution of water bodies and wetlands and the reduction of agricultural land productivity, thereby degrading natural resources and negatively influencing the HDF [58].…”

Section: Discussionmentioning

confidence: 99%

Integrating Environmental, Geographical and Social Data to Assess Sustainability in Hydrographic Basins: The ESI Approach

et al. 2020

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The elaboration of environmental sustainability indexes (ESI) aims to describe the complexity between social, environmental and ecological health. These indexes play a crucial role by helping stakeholders during the decision-making process and by identifying possible sites that require practical sustainable actions. In this study, we aim to elaborate an ESI for hydrographic basins. We use three factors to build the index: land use; vulnerability to soil degradation and topographic land attributes; and human development. The human development factor includes the dimensions of education, sanitation, longevity and income. These three factors are recommended by the Organization for Economic Cooperation and Development and reflect the pressure–state–impact assessment model. To verify the effectiveness of the proposed ESI, we applied it in a hydrographic basin located in southern Brazil. The sustainability level variation in the basin was classified into five groups: very low (0%), low (17%), intermediate (72%), high (11%) and very high (0%). The predominance of the intermediate sustainability level was found to mainly owe to the extent of agricultural land and the high degree of susceptibility to soil erosion in areas with low environmental conservation. In areas with native vegetation, environmental sustainability was found to be higher than in areas with other land use types. The resulting ESI will help facilitate future studies in environmental, economic or social dimensions in any hydrographic basin.

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“…Finally, in an aesthetical issue, the vegetation may also provide financial benefits [91], and it is observed that the riparian inhabitants will mostly prefer vegetative cover than visually intrusive concrete or stone riprap [56,92]. • T3: Vegetation-based techniques [93,94] offer a natural healing process to the stream [64,95], positively impacting (as previously mentioned in the description of the group of techniques T2) on water quality, wildlife habitat, flood reduction, the aesthetic value of a stream and financial valuation of the riparian regions [57,58,64,87,88,[95][96][97]. Furthermore, the physical vegetative coverage on streambanks protects the soil according to the combined effects of roots, stems, and foliage [61].…”

Section: Alternatives: Interventional Techniquesmentioning

confidence: 99%

Multi-Criteria Decision Method for Sustainable Watercourse Management in Urban Areas

et al. 2020

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The rapid urban growth followed by disordered occupation has been generating significant impacts on cities, bringing losses of an economic and social nature that directly interfere with the well-being of the population. In this work, a proposal for local urban infrastructure problems associated with watercourse management is presented, comparing Sustainable Drainage System (SuDS) techniques and Low-Impact Development (LID) concepts with alternative traditional interventions. The study addresses sustainable alternatives to cope with the urbanization of the Cehab’s open channel, which is an important urban watercourse tributary of the Muriaé River, at the municipality of Itaperuna, Rio de Janeiro—Brazil. The multi-criteria decision-making method called Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) was applied here. The results highlighted the better performance of sustainable techniques when compared to the traditional ones, with an overall advantage of the geogrids and geocells for this case study. The obtained TOPSIS coefficients-C for these techniques were higher (0.59488, for Reach 1; and 0.68656, for Reach 2) than those for the others. This research, therefore, presented an important urban watercourse management methodology that can be further applied to guide sustainable investments and help the decision-making associated with the development of territories.

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Vegetation and longitudinal coarse sediment connectivity affect the ability of ecosystem restoration to reduce riverbank erosion and turbidity in drinking water

Cited by 27 publications

References 87 publications

Effect of land use and land cover changes on water quality in the Nawuni Catchment of the White Volta Basin, Northern Region, Ghana

Effect of land use and land cover changes on water quality in the Nawuni Catchment of the White Volta Basin, Northern Region, Ghana

Integrating Environmental, Geographical and Social Data to Assess Sustainability in Hydrographic Basins: The ESI Approach

Multi-Criteria Decision Method for Sustainable Watercourse Management in Urban Areas

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