Land uses, Nitrogen and Phosphorus estimated fluxes in a Brazilian semi-arid watershed

Filho, Francisco José de Paula; Sampaio, Andressa Dyalla de Sá; Menezes, Jorge Marcell Coelho; Costa, Celme Torres Ferreira da; Santiago, Maria Marlúcia Freitas

doi:10.1016/j.jaridenv.2019.01.001

Cited by 24 publications

(8 citation statements)

References 28 publications

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“…The SRB has a similar diversity of active ingredients as that of other consolidated fruit production areas. Considering the SRB agricultural production figures, we can infer that the greater variety of pesticides is the result of a more diversified agriculture in the region (De Paula Filho et al, 2019).…”

Section: Active Ingredients and Toxicological And Environmental Class...mentioning

confidence: 99%

“…Therefore, the way the world manages these agrochemicals can play a key role in a 21 st ‐century sustainable society, as their inadequate use compromises the quality of soil and water resources (Eissa et al, 2022; Marques et al, 2019; Meeks & Dean, 1990; Milhome et al, 2009). In this context, water resources face intense pressures in semiarid regions of developing countries, caused by regional changes in land use and the effects of global climate change, which contribute to the depletion of water quantity and quality (De Paula Filho et al, 2019; Marques et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

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Water vulnerability to pesticide contamination in a Brazilian semiarid watershed

Francelino

Azevedo

Oliveira

et al. 2022

Integr Envir Assess & Manag

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This study aimed to prepare an inventory of the main active ingredients of pesticides and estimate the risk of pollution of groundwater and surface water resources in a Brazilian semiarid basin. The inventory was prepared using data from government agency databases. The contamination risk estimate was obtained using the GOSS index, Groundwater Ubiquity Score (GUS), Groundwater Screening Index (GSI), Leachability Index (LIX), US Environmental Protection Agency (USEPA) criteria, Leaching Index (LEACH), and Relative Leaching Potential Index (RLPI). The inventory identified 57 active ingredients commercialized under a well‐defined chemical class. Most of these (51.5%) belong to the very dangerous class, while 43.6% belong to the moderately toxic class. The GOSS model showed that 23.7% of the active ingredients have a low potential, 50.85% have a moderate potential, and 13.56% have a high potential for surface water contamination, with its transport being associated with the sediment. The GUS index indicates a low potential for groundwater contamination. However, the GSI points to a high potential for water contamination, the USEPA criteria for a possible contamination of groundwater, and, according to the LIX, most of the pollutants do so by leaching. The information provided contributes to the management of xenobiotic compounds in arid and semiarid basins, adding to the water security effort by providing tools for the assessment of potential pesticide pollution. Integr Environ Assess Manag 2023;19:804–816. © 2022 SETAC

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Section: Active Ingredients and Toxicological And Environmental Class...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Water vulnerability to pesticide contamination in a Brazilian semiarid watershed

Francelino

Azevedo

Oliveira

et al. 2022

Integr Envir Assess & Manag

Self Cite

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“…The analyses of the hydrodynamic properties of the soil are essential to the conception of water management models, especially in regions with a historical water shortage (Coutinho et al, 2016;Abaker et al, 2018;Bouslihim et al, 2019). In this context are included semiarid regions, that have shallow soils (Santos et al, 2012b;Paula Filho et al, 2019), low and irregular annual rainfall (Cirilo, 2008;Souza et al, 2016), and high evapotranspiration rates (Jha & Srivastava, 2018;Mutti et al, 2019), resulting in constant drought periods (Han et al, 2018;Habibi et al, 2018) and the susceptibility to desertification (Joseph et al, 2018;Barros et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Variability and spatial distribution of hydrodynamic properties in soil with preserved Caatinga

França

Coutinho

Prima

et al. 2021

RBRH

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The functions of soil water retention and hydraulic conductivity are indispensable for the characterization and modeling of the infiltration and water transfer processes in the vadose zone. In the case of the Brazilian semi-arid region, characterized by the scarcity of water resources, there is a lack of information on the hydrodynamic properties of the soil. Also, these properties have numerous factors of variability, requiring the characterization of their magnitude and distribution in space. This research presents an analysis of the infiltration process and the hydrodynamic properties of the soil under native Caatinga forest, observing its spatial distribution. This vegetation is typical of the Brazilian semi-arid region. One developed a 48-point grid in an area of approximately 875 m2, and applied on it the Beerkan methodology. The analyzes were performed based on the application of the BEST-Slope algorithm and statistical measures of the position, dispersion, and adherence tests. The results showed medium to high variability indices for the hydrodynamic properties, with random spatial distribution, despite the verification of a homogeneous texture in the area. Thus, it was found that the soil structure was predominant in the processes of water infiltration.

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“…An alternative to estimate the nutrient inputs in a hydrographic basin and in its surface aquatic environments can be through the identification and quantification of the main input pathways, to subsequently calculate the nitrogen and phosphorus emission factors of the natural sources (soil denudation and atmospheric deposition) and anthropic sources (agriculture, livestock and wastewater) (Trepel, 2016;De Paula Filho et al, 2019). The determination of N and P emission factors in regions that do not have details of the concentrations of these substances, as occurs in the Brazilian semiarid region, can be useful in assessing the sensitivity of aquatic systems to these nutrients inputs (De Paula Filho et al, 2015, 2019.…”

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confidence: 99%

Natural and anthropic inputs of nutrients in hydrographic basins of reservoirs in the Brazilian semiarid

Carvalho

Henry-Silva

2022

Acta Limnol. Bras.

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Aim Estimate the input of loads of N and P emitted by natural (atmospheric deposition and soil denudation) and anthropogenic (agriculture, livestock and sewage) factors for the hydrographic basins of two reservoirs in the Brazilian semiarid region (Mendubim and Umari). Methods In the present work, we use georeferenced data provided by official agencies, data presented in academic papers, field samples and laboratory analysis of emission factors in the estimates of nitrogen and phosphorus inputs in reservoir basins of Brazilian semiarid region. Results Soil denudation was identified as the main natural source of N and atmospheric deposition as the main source of P in both basins. Among the anthropogenic sources, the main source of N and P, for the two basins, was livestock. The total loads (natural and anthropogenic) of N (579.01 tonne. year-1) and P (136.35 tonne. year-1) received by the Umari basin was, respectively, 43.90% and 22.10% higher than those received by Mendubim, with a predominance of anthropogenic sources in both nitrogen and phosphorus emission. Conclusions The results showed the importance of monitoring human activities that can enhance nutrient inputs, such as nitrogen and phosphorus, in basins of the Brazilian semiarid region. The quantification of the emission factors analyzed here can be a tool in the development of strategies to mitigate the problems that high concentrations of N and P can bring to the quality and use of water in semiarid reservoirs.

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Land uses, Nitrogen and Phosphorus estimated fluxes in a Brazilian semi-arid watershed

Cited by 24 publications

References 28 publications

Water vulnerability to pesticide contamination in a Brazilian semiarid watershed

Water vulnerability to pesticide contamination in a Brazilian semiarid watershed

Variability and spatial distribution of hydrodynamic properties in soil with preserved Caatinga

Natural and anthropic inputs of nutrients in hydrographic basins of reservoirs in the Brazilian semiarid

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