Preprints
https://doi.org/10.5194/bg-2020-485
https://doi.org/10.5194/bg-2020-485

  23 Feb 2021

23 Feb 2021

Review status: this discussion paper is a preprint. It has been under review for the journal Biogeosciences (BG). The manuscript was not accepted for further review after discussion.

Influence of land use and occupation on the water quality of a microbasin in the southwestern Amazon

Alan Gomes Mendonça1, Josilena de Jesus Laureano1, Daíse da Silva Lopes3, Lindolaine Machado de Sousa3, Tiago de Oliveira Lima3, Ana Lúcia Denardin da Rosa1,3, Beatriz Machado Gomes1,3, Igor David da Costa1,2, and Elisabete Lourdes do Nascimento1,3 Alan Gomes Mendonça et al.
  • 1Professional Master's of the National Network for Water Management and Regulation of Water Resources, Federal University of Rondônia, Ji-Paraná, Brazil
  • 2Department of Exact, Biological and Earth Sciences, Federal Fluminense University, Santo Antônio de Pádua, Brazil
  • 3Department of Environmental and Sanitary Engineering, Federal University of Rondônia, Ji-Paraná, Brazil

Abstract. Water resource management in Brazil is constantly evolving, and greater knowledge about this resource allows better planning and more sustainable uses. In Brazil, the improvement of water resource management faces the difficulty of implementing the instruments of the National Water Resources Policy, such as classification of water bodies. Thus, to help improve the water management instruments in the country's northern region, the objective of the present study was to diagnose the influence of land use and occupation on the water quality of the Igarapé Nazaré microbasin. For this purpose, indirect methods of landscape analysis were applied based on the processing of remote sensing images in a GIS. For the water quality analysis, 10 collection points were selected in the watershed, with samples collected at each one in four periods (high water; HW/LW transition; low water; LW/HW transition). In the collected samples, 14 parameters were analyzed, namely: temperature, pH, electrical conductivity; turbidity; water transparency and depth; dissolved oxygen; chlorophyll a, ammonia, nitrite, nitrate, total phosphorus and dissolved phosphorus; total coliforms and E. coli. The spatial analysis showed that the microbasin has about 84 % anthropized territory, with emphasis on agriculture, and sources of pollution from industries, fish farming and domestic sewage. Parameter analyses showed high values of total phosphorus (0.005–27.55 mg.L−1), total coliforms (4,103–1,09,106 CFU) and E. coli (0–5.8,105 CFU), and low DO concentration (0.0–8.33 mg.L−1), below the official limit established in all periods analyzed The water quality of the Igarapé Nazaré microbasin was found to suffer strong anthropic interference, requiring improvement of the sanitary infrastructure of city of Ji-Paraná, for maintenance of the watershed in class 2.

Alan Gomes Mendonça et al.

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on bg-2020-485', Anonymous Referee #1, 02 Apr 2021
    • AC1: 'Reply on RC1', Alan Mendonça, 18 May 2021
  • RC2: 'Comment on bg-2020-485', Anonymous Referee #2, 27 Apr 2021
    • AC2: 'Reply on RC2', Alan Mendonça, 18 May 2021

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on bg-2020-485', Anonymous Referee #1, 02 Apr 2021
    • AC1: 'Reply on RC1', Alan Mendonça, 18 May 2021
  • RC2: 'Comment on bg-2020-485', Anonymous Referee #2, 27 Apr 2021
    • AC2: 'Reply on RC2', Alan Mendonça, 18 May 2021

Alan Gomes Mendonça et al.

Alan Gomes Mendonça et al.

Viewed

Total article views: 414 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
266 135 13 414 3 2
  • HTML: 266
  • PDF: 135
  • XML: 13
  • Total: 414
  • BibTeX: 3
  • EndNote: 2
Views and downloads (calculated since 23 Feb 2021)
Cumulative views and downloads (calculated since 23 Feb 2021)

Viewed (geographical distribution)

Total article views: 349 (including HTML, PDF, and XML) Thereof 349 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 26 Oct 2021
Download
Short summary
Aimed at improving the management of water resources in the Brazilian Amazon, studies providing relevant data and proposals are needed. This study through tools such as GIS and laboratory studies have provided data relevant to the framework of a watershed in southwestern Amazon. Different water quality parameters were analyzed relating them directly with the use of analysis and occupation of the basin, getting relevant results to improve the quality of water resources in the region.
Altmetrics