136 Years of variation of sediment-associated metals in a subtropical reservoir in southern Brazil: Implications for the environmental change

Martínez, Angela Ethelis Jiménez; Galoski, Carlos Eduardo; Figueira, Rubens César Lopes; Ferreira, Paulo Alves de Lima; Froehner, Sandro

doi:10.1016/j.catena.2023.107315

Cited by 2 publications

(2 citation statements)

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“…The study assumes that areas with higher runoff and export of sediments and nutrients tend to degrade aquatic ecosystems. Nutrient enrichment leads to the eutrophication of aquatic ecosystems [62,63], and increased erosion and sediment transport in the watershed can alter the natural characteristics of water bodies, pollute the waters due to the presence of pollutants adsorbed to the sediment, and contribute to the sedimentation of hydroelectric reservoirs [64][65][66]. Runoff was also included in this analysis because areas with higher runoff generation have the potential to increase soil erosion and, consequently, sediment and nutrient transport, as well as increase the risk of downstream flooding [40,67,68].…”

Section: Multicriteria and Spatial Analysis For The Proposition Of En...mentioning

confidence: 99%

Enhancing Water Ecosystem Services Using Environmental Zoning in Land Use Planning

Anjinho,

Barbosa,

Peponi

et al. 2024

Sustainability

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Land use and land cover (LULC) changes alter the structure and functioning of natural ecosystems, impacting the potential and flow of ecosystem services. Ecological restoration projects aiming to enhance native vegetation have proven effective in mitigating the impacts of LULC changes on ecosystem services. A key element in implementing these projects has been identifying priority areas for restoration, considering that resources allocated to such projects are often limited. This study proposes a novel methodological framework to identify priority areas for restoration and guide LULC planning to increase the provision of water ecosystem services (WESs) in a watershed in southeastern Brazil. To do so, we combined biophysical models and multicriteria analysis to identify priority areas for ecological restoration, propose environmental zoning for the study area, and quantify the effects of LULC changes and of a planned LULC scenario (implemented environmental zoning) on WES indicators. Previous LULC changes, from 1985 to 2019, have resulted in a nearly 20% increase in annual surface runoff, a 50% increase in sediment export, a 22% increase in total nitrogen (TN) export, and a 53% increase in total phosphorus (TP) export. Simultaneously, they reduced the provision of WESs (baseflow −27%, TN retention −10%, and TP retention −16%), except for sediment retention, which increased by 35% during the analyzed period. The planned LULC scenario successfully increased the provision of WESs while reducing surface runoff and nutrient and sediment exports. The methodology employed in this study proved to be effective in guiding LULC planning for improving WES. The obtained results provide a scientific foundation for guiding the implementation of WES conservation policies in the studied watershed. This method is perceived to be applicable to other watersheds.

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Section: Multicriteria and Spatial Analysis For The Proposition Of En...mentioning

confidence: 99%

Enhancing Water Ecosystem Services Using Environmental Zoning in Land Use Planning

Anjinho,

Barbosa,

Peponi

et al. 2024

Sustainability

View full text Add to dashboard Cite

show abstract

“…The study assumes that areas with higher runoff and export of sediments and nutrients tend to degrade the aquatic ecosystems. Nutrient enrichment leads to the eutrophication of aquatic ecosystems VIRIES, 2021), and increased erosion and sediment transport in the watershed can alter the natural characteristics of water bodies, pollute the waters due to the presence of pollutants adsorbed to the sediment, and contribute to the sedimentation of hydroelectric reservoirs (MIRANDA et al, 2014;ESTIGONI et al, 2017;MARTINEZ et al, 2023). Runoff was also included in this analysis because areas with higher runoff generation have the potential to increase soil erosion and, consequently, sediment and nutrient transport, as well as increase the risk of downstream flooding (DAS, 2019;DU et al, 2022;.…”

Section: Multicriteria and Spatial Analysis For The Proposition Of En...mentioning

confidence: 99%

Effects of climate and land use changes on water ecosystem services: understanding the mitigating effect of green land use scenarios

Anjinho

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I appreciate the friendship and companionship during my stay in the city.To my friends in São Carlos, who indirectly contributed to the completion of this research, providing moments of distraction, leisure, and friendship that were essential to endure this journey.To my family, especially my grandmother, I express my eternal gratitude for always being by my side, facing all the difficult moments that life imposed on us, and also for being an example of resilience, perseverance, and honesty.

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136 Years of variation of sediment-associated metals in a subtropical reservoir in southern Brazil: Implications for the environmental change

Cited by 2 publications

References 54 publications

Enhancing Water Ecosystem Services Using Environmental Zoning in Land Use Planning

Enhancing Water Ecosystem Services Using Environmental Zoning in Land Use Planning

Effects of climate and land use changes on water ecosystem services: understanding the mitigating effect of green land use scenarios

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