Climate Change Impacts on Sediment Quality of Subalpine Reservoirs: Implications on Management

Marziali, Laura; Tartari, Gianni; Salerno, Franco; Valsecchi, Lucia; Bravi, Clara; Lorenzi, Erika; Genoni, Pietro; Guzzella, Licia

doi:10.20944/preprints201709.0012.v1

Cited by 4 publications

(7 citation statements)

References 61 publications

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“…The results are shown in Table 5, where the Cd value (1.21 ± 1.45) presents values greater than 0 (Igeo> 0), and presented a degree of contamination from moderately to heavily contaminated, while As (-0.78 ± 0.69), Pb (-0.98 ± 0.62), Cu (-1.05 ± 0.64), Zn (-1.71 ± 0.47) and Cr (-4.18 ± 0.40) do not present contamination for the reservoir. The high EF and Igeo of Cd would be a risk in the reservoir in relation to other evaluated elements, and compared to other studies, our Cd Igeo would be slightly higher (Abata, 2013;Ekengele et al, 2017;Li et al, 2018;Marziali et al, 2017;Zhang et al, 2017) and less equal to studies where the concentration of Cd is described as a strong anthropogenic effect (Cáceres Choque et al, 2013;Çevik et al, 2009;Li, 2014;Nowrouzi and Pour Khabbaz, 2014).…”

Section: Geoaccumulation Index Evaluation (Igeo)supporting

confidence: 40%

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Distribution and assessment of the environmental risk of heavy metals in Aguada Blanca reservoir, Peru

Espirilla¹,

Gómez²

2022

Rev. ambiente água

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Sediments containing high concentrations of heavy metals in reservoirs, lakes and rivers, can resuspend into aquatic environments and negatively impact water quality. The concentrations of 10 elements were studied in surface sediments and water from the Aguada Blanca Reservoir, Peru, an important water source to 1,080,000 people in the arid province of Arequipa. Sediment and water samples were collected from nine points in 2019. The enrichment, accumulation, ecological risk and distribution of metals in sediment were determined, and the information on heavy metals in water was used to assess the quality of the aquatic system. Spatially, heavy metals showed variations throughout the study area, with an increase for most elements near the deepest part of the reservoir. The average concentration of Cd in sediment was 4 times higher than the natural background. In water, As was the only element that exceeded Peruvian regulations (As > 10 μg L-1). The Enrichment Factor (EF) and Geoaccumulation Index (Igeo) of metals in sediment presented the following order: Cd> As> Pb> Zn> Cu> Ni> Cr, with Ni and Cr being the only elements that did not present enrichment. The most considerable Igeo was Cd (1.21 ± 1.45), presenting a classification of moderately to heavily contaminated. The integrated potential ecological risk (RI) of Cd presented high values in 5 points of the reservoir. The information developed will assist in establishing effective control strategies for the quality of the aquatic system. Keywords: heavy metals, reservoir, sediments, water quality.

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Section: Geoaccumulation Index Evaluation (Igeo)supporting

confidence: 40%

“…The accumulation of heavy metals in aquatic systems can lead to human health risks and deterioration of aquatic ecology (Hahn et al, 2018;Hou et al, 2013). Therefore, the accumulation of metals in sediments is the subject of environmental studies in much of the world by environmental researchers (Hou et al, 2013;Marziali et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Distribution and assessment of the environmental risk of heavy metals in Aguada Blanca reservoir, Peru

Espirilla¹,

Gómez²

2022

Rev. ambiente água

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“…Logo, o clima frio obteve a menor média estimada. Os dados corroboram o estudo de Marziali et al (2017) ao afirmar que, em um contexto global, os padrões de precipitação variam no tempo e no espaço, com aumento esperado em áreas tropicais e subtropicais. Dando continuidade à análise, iremos trazer dois estudos (Borrelli et al, 2017;Borrelli et al, 2020) que calcularam os valores de perda de solo em função das mudanças climáticas.…”

Section: Methodsunclassified

Panorama das Alterações nos Padrões de Precipitação e Erosão diante de Mudanças Climáticas: Revisão de Literatura

Kiefer

Costa

Petsch

et al. 2021

Rev. Bras. Geog. Fis.

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Os efeitos das mudanças climáticas na erosividade possivelmente afetarão os processos erosivos no século 21, tornando emergente a discussão dessa temática. Sendo assim, os objetivos desta revisão de literatura são: traçar as relações entre a variação de perda de solos e erosividade diante de mudanças climáticas, apresentando produtos cartográficos das décadas passadas e para todo o século 21; apresentar um panorama geral de pesquisas (publicadas entre 2016-2020); e demonstrar quais são os desafios e próximos passos na pesquisa sobre esta temática. Para tanto, a pesquisa de artigos foi realizada nas plataformas do Portal de Periódicos da CAPES, Google Scholar e Science Direct, totalizando 33 artigos. Foram consideradas pesquisas de natureza conceitual, com revisões de literatura sobre os temas e de natureza procedimental com cálculos do fator R e estimativas de perda de solos. Os trabalhos consultados mostram que a erosividade estimada e a taxa de perda de solos devem aumentar e diminuir em função das futuras mudanças climáticas. Embora, em escala global, haja estimativas do aumento de erosividade para a área tropical do planeta, atingindo majoritariamente países em desenvolvimento como o Brasil. Isso demonstra a emergência da elaboração de estudos para o país, em escala regional, de bioma e de bacias hidrográficas. Nesse sentido, ressaltamos a importância da abordagem sistêmica, que pode ser proporcionada pela Geografia nos estudos desta temática, visto que os desafios se relacionam a dificuldade de integrar diversos fatores ambientais e obter dados de campo nas modelagens preditivas de perda de solo. Overview of Changes in Rainfall and Erosion Patterns in the Face of Climate Change: Literature Review A B S T R A C TThe effects of climate change on erosivity are likely to affect erosion processes in the 21st century, which makes the discussion emerging. Thus, the goals of this literature review are: to trace the relationship between the variation in soil loss and erosivity in the face of climate change, presenting cartographic products from the past decades and for the entire 21st century; present an overview of research (published between 2016-2021); demonstrate challenges and next steps in research on this topic. Therefore, the search for papers was carried out on the platforms of the CAPES Journal Portal, Google Scholar and Science Direct, totaling 78 papers. Conceptual researches was considered, with literature reviews on the themes and procedural researches with calculations of the R factor and soil loss estimate. The consulted papers show that the estimated erosivity and the rate of soil loss are expected to increase and decrease as a result of future climate changes. Although, on a global scale, there are estimates of the increase in erosivity for the tropical area of the planet, mainly affecting developing countries like Brazil. This demonstrates the emergence of studies for the country, on a regional scale, of biomes and hydrographic basins. In this sense, we emphasize the importance of the systemic approach, which can be provided by Geography in the studies of this theme, since the challenges are related to the difficulty of integrating various environmental factors and obtaining field data in predictive models of soil loss.Keywords: erosivity, extreme precipitation events, global climate models

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“…Only two studies [9,11] identify, propose, discuss, and develop an adaptation scenario. Five other studies [10,14,[16][17][18] belong more properly to the category "Climate change impact studies". The last three studies [24][25][26] analyze changes that have occurred in the climate and with water resources in the recent past decades, without developing any future scenarios.…”

Section: Studies For the Development Of Adaptation Scenariosmentioning

confidence: 99%

“…The parties affirmed that "adaptation must be addressed with the same priority as mitigation" [1,2]. Under this framework, the COP invited "all Parties to enhance action on adaptation" [1][2][3][4][5][6][7][8][9][10][11][12][13][14] by "planning, prioritizing and implementing adaptation actions, including projects and programs" [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. The Paris agreement (COP21) provided numerous indications and details about adaptation, mainly in Article 7 [2].…”

Section: Introductionmentioning

confidence: 99%

Adaptation Strategies for Water Resources: Criteria for Research

Salerno

2017

Water

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Abstract:The Paris Agreement presents new fields of research related to the adaptation strategies to climate change. A challenge for future research consists in developing context-specific guidelines to support adaptation. This Special Issue on "Adaptation strategy to climate change for water resources" is born in this context. It contains 15 scientific studies facing a diversity of issues inherent to the adaptation strategies for water resources. This editorial analyses how the authors of this collection of papers decided to develop and present their research in order to identify criteria to contribute defining, in a near future, standardized approaches and practices for adaptation studies. Papers have been categorized in two major fields: "Studies for the development of adaptation scenarios" and "Studies for the development of adaptation solutions". Papers belonging to both categories are generally found missing to treat the 'uncertainty' issues arising and the implementation of the proposed adaptation strategies. Studies investigating future adaptation scenarios are generally found to be unbalanced in favor of the assessment of future impacts on water resources and less towards the provision of adaptation scenarios. When these studies do not provide elements to manage the specific uncertainty related to the proposed adaptation solutions, at least exploring the uncertainty related to the climatic and impact scenarios is strongly recommended. Studies providing methodological and/or procedural examinations on adaptation solutions are recommended to suitably report the climatic, environmental, and social context for which the action has been developed. A reduction of uncertainty and an easier implementation of proposed measures could be induced from this.

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Climate Change Impacts on Sediment Quality of Subalpine Reservoirs: Implications on Management

Cited by 4 publications

References 61 publications

Distribution and assessment of the environmental risk of heavy metals in Aguada Blanca reservoir, Peru

Distribution and assessment of the environmental risk of heavy metals in Aguada Blanca reservoir, Peru

Panorama das Alterações nos Padrões de Precipitação e Erosão diante de Mudanças Climáticas: Revisão de Literatura

Adaptation Strategies for Water Resources: Criteria for Research

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