Are Brazilian catchments gaining or losing water? The effective area of tropical catchments

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Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorFederal University of Mato Grosso do Sul-
Autor(es): dc.creatorSchwamback, Dimaghi-
Autor(es): dc.creatorGesualdo, Gabriela C.-
Autor(es): dc.creatorSone, Jullian S.-
Autor(es): dc.creatorKobayashi, Alex Naoki A.-
Autor(es): dc.creatorBertotto, Luis Eduardo-
Autor(es): dc.creatorGarcia, Maria Vitória S.-
Autor(es): dc.creatorAlmagro, André-
Autor(es): dc.creatorOliveira, Paulo Tarso S.-
Data de aceite: dc.date.accessioned2025-08-21T21:25:34Z-
Data de disponibilização: dc.date.available2025-08-21T21:25:34Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-03-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1002/hyp.14535-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/230653-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/230653-
Descrição: dc.descriptionSimilar to most countries, the Brazilian water resources management considers topographically delineated catchment as a territorial unit for policy implementation. Yet, previous studies have shown that catchments are not hydrologically isolated, and topographic limits often neglect the groundwater boundaries. Thus, studies on effective catchment areas are promising for shedding light on inter-catchment groundwater flow. Here, we investigated the deviation between the topographic and effective areas across Brazil. We applied the effective catchment area index (ECI) to 733 Brazilian catchments and identified the most influencing attributes on the ECI by using principal component and random forest analyses (PCA and RFA, respectively). Further analysis was carried out by contrasting the ECI values against the expected range of the Budyko curve, considering both topographic and effective catchment areas (classic and adjusted framework, respectively). We noted that nearly 32% of the Brazilian catchments presented more than 30% of difference between the effective area and its topographic boundaries. In general, the more arid biomes in Brazil—the Cerrado and Caatinga—are prone to have smaller effective areas while larger effective areas were mostly found in the Atlantic Forest biome, a humid tropical region with a higher mean elevation. Our findings indicate that the aridity index was the main driving factor and negatively correlated with ECI followed by mean slope, precipitation seasonality, and mean elevation. We highlight the potential of adopting a pooling of catchments based on their interconnectivity to minimize management costs while maximizing synergies and lessening trade-offs between ecosystem functioning and water transfer processes. Our results contribute to a better country-wide understanding of hydrological connectivity among catchments and highlight the need to consider the effective catchment area to overcome water-food-energy security challenges on multiple scales.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionDepartment of Hydraulics and Sanitation São Carlos School of Engineering University of São Paulo, SP-
Descrição: dc.descriptionDepartment of Civil and Environmental Engineering Bauru Engineering College São Paulo State University – UNESP, SP-
Descrição: dc.descriptionFaculty of Engineering Architecture and Urbanism and Geography Federal University of Mato Grosso do Sul, MS-
Descrição: dc.descriptionDepartment of Civil and Environmental Engineering Bauru Engineering College São Paulo State University – UNESP, SP-
Descrição: dc.descriptionCAPES: 001-
Descrição: dc.descriptionFAPESP: 2015/03806-1-
Descrição: dc.descriptionFAPESP: 2019/24292-7-
Descrição: dc.descriptionFAPESP: 2021/14016-2-
Descrição: dc.descriptionCNPq: 309752/2020-5-
Descrição: dc.descriptionCNPq: 441289/2017-7-
Idioma: dc.languageen-
Relação: dc.relationHydrological Processes-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjecthydrological connectivity-
Palavras-chave: dc.subjectphysiographic parameters-
Palavras-chave: dc.subjectwater resources management-
Título: dc.titleAre Brazilian catchments gaining or losing water? The effective area of tropical catchments-
Tipo de arquivo: dc.typelivro digital-
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