Título:	Infuence of agriculture on surface water quality in three lentic environments in a conservation unit of Brazil
Autor(es):	Santos, Marcos José de Jesus Laranja, Ruth Elias de Paula
ORCID:	https://orcid.org/0000-0001-5549-0180 https://orcid.org/0000-0003-2702-0100
Afiliação do autor:	University of Brasília, Department of Geography National Water and Sanitation Agency University of Brasília, Department of Geography
Assunto:	Meio ambiente Agricultura Unidades de conservação - Distrito Federal (Brasil) Recursos hídricos - Distrito Federal (Brasil) Água - qualidade
Data de publicação:	21-Dez-2023
Editora:	Springer
Referência:	SANTOS, M. J. de Jesus; LARANJA, R. E. de Paula. Influence of agriculture on surface water quality in three lentic environments in a conservation unit of Brazil. International Journal of Environmental Science and Technology, v. 21, p. 4295-4306, 2024. DOI: https://doi.org/10.1007/s13762-023-05296-8. Disponível em: https://link.springer.com/article/10.1007/s13762-023-05296-8. Acesso em: 10 jul. 2024.
Abstract:	The use of agricultural inputs (AIs) without technical criteria can afect the quality of water sources and impact the biota present in these environments. This research sought to verify whether there was contamination in the surface water bodies of three lentic environments in a fully protected conservation unit in Brazil, called Estação Ecológica de Águas Emendadas (ESECAE), originating from agricultural activity near its perimeter. The ESECAE is the source of water bodies that fow into important hydrographic basins in Brazil and South America. Water quality parameters (WQPs) related to the use of AIs were selected and evaluated to assess compliance with regulatory provisions regarding the priority use of water at the study site. The analysis of the results revealed that in some situations, these parameters exceeded the normative limit in some samples and that, in general, the transport of contaminants originating from rainfall occurred. Total phosphorus (TP) values were high, exceeding regulatory concentration limits in multiple analyses. Consequently, eutrophication processes were verifed in these environments. The eutrophic environments favored the proliferation of aquatic macrophytes, such as the invasive species Hyparrhenia rufa. TP concentrations increased during the dry season in these environments. In this context, a process related to the dynamics of phosphorus in aquatic lentic environments under certain conditions was observed. In conclusion, this research highlights the importance of monitoring WQPs in diferent periods to better assess water quality and to understand contaminant dynamics.
Unidade Acadêmica:	Instituto de Ciências Humanas (ICH) Departamento de Geografia (ICH GEA)
Licença:	Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
DOI:	https://doi.org/10.1007/s13762-023-05296-8
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