Evidence of water surface and flow reduction in the main hydrographic basin of the Brazilian savannah (Cerrado biome): the Araguaia river

Teixeira, Alex dos Santos; Vieira, Ludgero Cardoso Galli; Souza, Carla Albuquerque de; Bernardi, José Vicente Elias; Monteiro, Lucas Cabrera

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Campo DC	Valor	Idioma
dc.contributor.author	Teixeira, Alex dos Santos	-
dc.contributor.author	Vieira, Ludgero Cardoso Galli	-
dc.contributor.author	Souza, Carla Albuquerque de	-
dc.contributor.author	Bernardi, José Vicente Elias	-
dc.contributor.author	Monteiro, Lucas Cabrera	-
dc.date.accessioned	2024-09-09T11:05:37Z	-
dc.date.available	2024-09-09T11:05:37Z	-
dc.date.issued	2024	-
dc.identifier.citation	TEIXEIRA, Alex dos Santos et al. Evidence of water surface and flow reduction in the main hydrographic basin of the Brazilian savannah (Cerrado biome): the Araguaia river. Hydrobiologia, [S. l.], v. 851, p. 2503-2518, 2024. DOI: https://doi.org/10.1007/s10750-024-05471-z	pt_BR
dc.identifier.uri	http://repositorio.unb.br/handle/10482/50311	-
dc.language.iso	eng	pt_BR
dc.publisher	Springer	pt_BR
dc.rights	Acesso Restrito	pt_BR
dc.title	Evidence of water surface and flow reduction in the main hydrographic basin of the Brazilian savannah (Cerrado biome): the Araguaia river	pt_BR
dc.type	Artigo	pt_BR
dc.subject.keyword	Fluxo de água	pt_BR
dc.subject.keyword	Desmatamento	pt_BR
dc.subject.keyword	Agricultura	pt_BR
dc.identifier.doi	https://doi.org/10.1007/s10750-024-05471-z	pt_BR
dc.relation.publisherversion	https://link.springer.com/article/10.1007/s10750-024-05471-z	pt_BR
dc.description.abstract1	Reconciling environmental conservation with growing demands for food, water, and energy is a global challenge. Brazil, a major agricultural producer, grapples with deforestation’s environmental costs. The Araguaia River basin, vital for Brazil’s economic growth, undergoes significant land use changes. Assessing data from 1987 to 2019, we studied annual water surface variations, considering deforestation, agriculture, livestock farming land, and central pivot irrigation, and historical water flow series from 1980 to 2020 from 21 monitoring stations. We observed notable reductions in flooded areas (angular coefficients from 130 a 2,276 ha/year) and water flow the entire basin (b = − 13.84; t = − 4.8; P < 0.001) and its regions (Upper Araguaia: b = − 3.32; t = − 4.5; P < 0.001; Middle Araguaia: b = − 8.70; t = − 4.8; P < 0.001; Lower Araguaia: b = − 45.49, t = − 4.7; P < 0.001) over recent years. Water flow reductions persist year-round, with a marked decrease during low water periods (F3,8 = 8.82; P = 0,006), aligning with heightened water demand for intensive agriculture. Tributaries and the main channel show similar reduction processes (t = 0.16; g.l. = 19; P = 0.873). Ensuring the basin’s ecological flow is imperative for the aquatic ecosystem’s minimum requirements.	pt_BR
dc.identifier.orcid	https://orcid.org/0000-0002-0205-8594	pt_BR
dc.contributor.affiliation	Universidade de Brasília, Faculdade UnB Planaltina, Programa de Pós-Graduação em Ciências Ambientais	pt_BR
dc.contributor.affiliation	Universidade de Brasília, Faculdade UnB Planaltina, Núcleo de Estudos e Pesquisas Ambientais e Limnológicas	pt_BR
dc.contributor.affiliation	Universidade de Brasília, Faculdade UnB Planaltina, Laboratório de Geoestatística e Geodésia	pt_BR
dc.contributor.affiliation	Universidade de Brasília, Instituto de Ciências Biológicas, Programa de Pós-Graduação em Ecologia	pt_BR
dc.description.unidade	Faculdade UnB Planaltina (FUP)	pt_BR
dc.description.unidade	Instituto de Ciências Biológicas (IB)	pt_BR
dc.description.ppg	Programa de Pós-Graduação em Ciências Ambientais	pt_BR
dc.description.ppg	Programa de Pós-Graduação em Ecologia	pt_BR
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