SPATIO-TEMPORAL DYNAMICS OF TOXIC CYANOBACTERIA IN AN ARTIFICIAL LAKE IN THE BRAZILIAN SEMI-ARID REGION
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Caatinga |
DOI: | 10.1590/1983-21252022v35n218rc |
Texto Completo: | https://periodicos.ufersa.edu.br/caatinga/article/view/10166 |
Resumo: | Intensification of the eutrophication process in surface water leads to an increase in the intensity and frequency of cyanobacterial blooms, compromising the availability of drinking water. Therefore, the aim of this study was to investigate the spatio-temporal dynamics of cyanobacteria and identify the most important nutrients for such dynamics in a semiarid artificial lake, the Orós reservoir, in north-eastern Brazil. Seventy-seven water samples were collected in 11 campaigns (six during the dry season and five during the rainy season) from seven points. The attributes under investigation were the Secchi transparency, turbidity, pH, apparent colour, electrical conductivity, total solids, total phosphorus, soluble orthophosphate content, total Kjeldahl nitrogen, ammonia content, nitrate content, and cyanobacteria dynamics, resulting in a total of 924 samples (number of campaigns × number of points × number of attributes). Principal component analysis and cluster analysis were used to investigate the significance and determinant attributes of the spatio-temporal dynamics of cyanobacteria. Of the 17 species of cyanobacteria identified, 10 accounted for 72.47% of the total accumulated variance. During the rainy season, four homogeneous groups of cyanobacteria formed, whereas during the dry season, only three groups formed. The greatest concentrations occurred during the dry season, notably for Aphanocapsa spp., Cylindrospermopsis sp., and Geitlerinema sp., which are potentially toxic and show a greater affinity to the physical attributes of water. Climate seasonality was decisive in the spatio-temporal dynamics of cyanobacteria, and high transparency values limited excessive proliferation of the dominant species. |
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Revista Caatinga |
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SPATIO-TEMPORAL DYNAMICS OF TOXIC CYANOBACTERIA IN AN ARTIFICIAL LAKE IN THE BRAZILIAN SEMI-ARID REGIONDINÂMICA ESPAÇO-TEMPORAL DE CIANOBACTÉRIAS TÓXICAS EM LAGO ARTIFICIAL NO SEMIÁRIDO BRASILEIROFitoplâncton. Qualidade de água. Sazonalidade. Análise multivariada.Phytoplankton. Water quality. Seasonality. Multivariate analysis.Intensification of the eutrophication process in surface water leads to an increase in the intensity and frequency of cyanobacterial blooms, compromising the availability of drinking water. Therefore, the aim of this study was to investigate the spatio-temporal dynamics of cyanobacteria and identify the most important nutrients for such dynamics in a semiarid artificial lake, the Orós reservoir, in north-eastern Brazil. Seventy-seven water samples were collected in 11 campaigns (six during the dry season and five during the rainy season) from seven points. The attributes under investigation were the Secchi transparency, turbidity, pH, apparent colour, electrical conductivity, total solids, total phosphorus, soluble orthophosphate content, total Kjeldahl nitrogen, ammonia content, nitrate content, and cyanobacteria dynamics, resulting in a total of 924 samples (number of campaigns × number of points × number of attributes). Principal component analysis and cluster analysis were used to investigate the significance and determinant attributes of the spatio-temporal dynamics of cyanobacteria. Of the 17 species of cyanobacteria identified, 10 accounted for 72.47% of the total accumulated variance. During the rainy season, four homogeneous groups of cyanobacteria formed, whereas during the dry season, only three groups formed. The greatest concentrations occurred during the dry season, notably for Aphanocapsa spp., Cylindrospermopsis sp., and Geitlerinema sp., which are potentially toxic and show a greater affinity to the physical attributes of water. Climate seasonality was decisive in the spatio-temporal dynamics of cyanobacteria, and high transparency values limited excessive proliferation of the dominant species.A intensificação do processo de eutrofização nas águas superficiais leva a um aumento da intensidade e frequência de florações de cianobactérias comprometendo a disponibilidade hídrica para o uso consuntivo. Deste modo, objetivou-se estudar a dinâmica espaço-temporal das cianobactérias e a identificação dos nutrientes de maior peso nessa dinâmica em lago artificial semiárido, reservatório Orós (Nordeste do Brasil). Foram analisadas 77 amostras de água em 11 campanhas (seis no período seco e seis no chuvoso) em sete pontos. Os atributos investigados foram: Transparência de Secchi, Turbidez, pH, Cor Aparente, Condutividade Elétrica, sólidos totais, fósforo total, ortofosfato solúvel, NTK, Amônia, Nitrato e Cianobactérias, totalizando 924 (número de campanhas × número de pontos × número de atributos). Para investigar a significância e os atributos determinantes da dinâmica espaço-temporal das cianobactérias empregou-se análise da componente principal e análise de agrupamento. Das 17 espécies de cianobactérias identificadas, 10 espécies explicaram 72,47% da variância total acumulada. Durante a estação chuvosa foram formados 4 grupos homogêneos de cianobactérias enquanto no período seco formaram-se apenas três grupos. As maiores concentrações ocorreram no período seco com destaque para as espécies Aphanocapsa spp, Cylindrospermopsis sp e Geitlerinema sp, que são potencialmente tóxicas, e mostraram uma maior afinidade aos atributos físicos. A sazonalidade climática foi determinante na dinâmica espaço-temporal das cianobactérias, e que os altos valores de transparência limitaram a proliferação excessiva das espécies dominantes. Universidade Federal Rural do Semi-Árido2022-04-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufersa.edu.br/caatinga/article/view/1016610.1590/1983-21252022v35n218rcREVISTA CAATINGA; Vol. 35 No. 2 (2022); 423-435Revista Caatinga; v. 35 n. 2 (2022); 423-4351983-21250100-316Xreponame:Revista Caatingainstname:Universidade Federal Rural do Semi-Árido (UFERSA)instacron:UFERSAenghttps://periodicos.ufersa.edu.br/caatinga/article/view/10166/10912Copyright (c) 2022 Revista Caatingainfo:eu-repo/semantics/openAccessLima, Francisco Josivan de OliveiraLopes, Fernando BezerraAndrade, Eunice Maia deRocha, Francisco Cleiton daMeireles, Ana Célia Maia2023-07-03T17:55:03Zoai:ojs.periodicos.ufersa.edu.br:article/10166Revistahttps://periodicos.ufersa.edu.br/index.php/caatinga/indexPUBhttps://periodicos.ufersa.edu.br/index.php/caatinga/oaipatricio@ufersa.edu.br|| caatinga@ufersa.edu.br1983-21250100-316Xopendoar:2024-04-29T09:46:55.626142Revista Caatinga - Universidade Federal Rural do Semi-Árido (UFERSA)true |
dc.title.none.fl_str_mv |
SPATIO-TEMPORAL DYNAMICS OF TOXIC CYANOBACTERIA IN AN ARTIFICIAL LAKE IN THE BRAZILIAN SEMI-ARID REGION DINÂMICA ESPAÇO-TEMPORAL DE CIANOBACTÉRIAS TÓXICAS EM LAGO ARTIFICIAL NO SEMIÁRIDO BRASILEIRO |
title |
SPATIO-TEMPORAL DYNAMICS OF TOXIC CYANOBACTERIA IN AN ARTIFICIAL LAKE IN THE BRAZILIAN SEMI-ARID REGION |
spellingShingle |
SPATIO-TEMPORAL DYNAMICS OF TOXIC CYANOBACTERIA IN AN ARTIFICIAL LAKE IN THE BRAZILIAN SEMI-ARID REGION SPATIO-TEMPORAL DYNAMICS OF TOXIC CYANOBACTERIA IN AN ARTIFICIAL LAKE IN THE BRAZILIAN SEMI-ARID REGION Lima, Francisco Josivan de Oliveira Fitoplâncton. Qualidade de água. Sazonalidade. Análise multivariada. Phytoplankton. Water quality. Seasonality. Multivariate analysis. Lima, Francisco Josivan de Oliveira Fitoplâncton. Qualidade de água. Sazonalidade. Análise multivariada. Phytoplankton. Water quality. Seasonality. Multivariate analysis. |
title_short |
SPATIO-TEMPORAL DYNAMICS OF TOXIC CYANOBACTERIA IN AN ARTIFICIAL LAKE IN THE BRAZILIAN SEMI-ARID REGION |
title_full |
SPATIO-TEMPORAL DYNAMICS OF TOXIC CYANOBACTERIA IN AN ARTIFICIAL LAKE IN THE BRAZILIAN SEMI-ARID REGION |
title_fullStr |
SPATIO-TEMPORAL DYNAMICS OF TOXIC CYANOBACTERIA IN AN ARTIFICIAL LAKE IN THE BRAZILIAN SEMI-ARID REGION SPATIO-TEMPORAL DYNAMICS OF TOXIC CYANOBACTERIA IN AN ARTIFICIAL LAKE IN THE BRAZILIAN SEMI-ARID REGION |
title_full_unstemmed |
SPATIO-TEMPORAL DYNAMICS OF TOXIC CYANOBACTERIA IN AN ARTIFICIAL LAKE IN THE BRAZILIAN SEMI-ARID REGION SPATIO-TEMPORAL DYNAMICS OF TOXIC CYANOBACTERIA IN AN ARTIFICIAL LAKE IN THE BRAZILIAN SEMI-ARID REGION |
title_sort |
SPATIO-TEMPORAL DYNAMICS OF TOXIC CYANOBACTERIA IN AN ARTIFICIAL LAKE IN THE BRAZILIAN SEMI-ARID REGION |
author |
Lima, Francisco Josivan de Oliveira |
author_facet |
Lima, Francisco Josivan de Oliveira Lima, Francisco Josivan de Oliveira Lopes, Fernando Bezerra Andrade, Eunice Maia de Rocha, Francisco Cleiton da Meireles, Ana Célia Maia Lopes, Fernando Bezerra Andrade, Eunice Maia de Rocha, Francisco Cleiton da Meireles, Ana Célia Maia |
author_role |
author |
author2 |
Lopes, Fernando Bezerra Andrade, Eunice Maia de Rocha, Francisco Cleiton da Meireles, Ana Célia Maia |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Lima, Francisco Josivan de Oliveira Lopes, Fernando Bezerra Andrade, Eunice Maia de Rocha, Francisco Cleiton da Meireles, Ana Célia Maia |
dc.subject.por.fl_str_mv |
Fitoplâncton. Qualidade de água. Sazonalidade. Análise multivariada. Phytoplankton. Water quality. Seasonality. Multivariate analysis. |
topic |
Fitoplâncton. Qualidade de água. Sazonalidade. Análise multivariada. Phytoplankton. Water quality. Seasonality. Multivariate analysis. |
description |
Intensification of the eutrophication process in surface water leads to an increase in the intensity and frequency of cyanobacterial blooms, compromising the availability of drinking water. Therefore, the aim of this study was to investigate the spatio-temporal dynamics of cyanobacteria and identify the most important nutrients for such dynamics in a semiarid artificial lake, the Orós reservoir, in north-eastern Brazil. Seventy-seven water samples were collected in 11 campaigns (six during the dry season and five during the rainy season) from seven points. The attributes under investigation were the Secchi transparency, turbidity, pH, apparent colour, electrical conductivity, total solids, total phosphorus, soluble orthophosphate content, total Kjeldahl nitrogen, ammonia content, nitrate content, and cyanobacteria dynamics, resulting in a total of 924 samples (number of campaigns × number of points × number of attributes). Principal component analysis and cluster analysis were used to investigate the significance and determinant attributes of the spatio-temporal dynamics of cyanobacteria. Of the 17 species of cyanobacteria identified, 10 accounted for 72.47% of the total accumulated variance. During the rainy season, four homogeneous groups of cyanobacteria formed, whereas during the dry season, only three groups formed. The greatest concentrations occurred during the dry season, notably for Aphanocapsa spp., Cylindrospermopsis sp., and Geitlerinema sp., which are potentially toxic and show a greater affinity to the physical attributes of water. Climate seasonality was decisive in the spatio-temporal dynamics of cyanobacteria, and high transparency values limited excessive proliferation of the dominant species. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-04-04 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.ufersa.edu.br/caatinga/article/view/10166 10.1590/1983-21252022v35n218rc |
url |
https://periodicos.ufersa.edu.br/caatinga/article/view/10166 |
identifier_str_mv |
10.1590/1983-21252022v35n218rc |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://periodicos.ufersa.edu.br/caatinga/article/view/10166/10912 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2022 Revista Caatinga info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2022 Revista Caatinga |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal Rural do Semi-Árido |
publisher.none.fl_str_mv |
Universidade Federal Rural do Semi-Árido |
dc.source.none.fl_str_mv |
REVISTA CAATINGA; Vol. 35 No. 2 (2022); 423-435 Revista Caatinga; v. 35 n. 2 (2022); 423-435 1983-2125 0100-316X reponame:Revista Caatinga instname:Universidade Federal Rural do Semi-Árido (UFERSA) instacron:UFERSA |
instname_str |
Universidade Federal Rural do Semi-Árido (UFERSA) |
instacron_str |
UFERSA |
institution |
UFERSA |
reponame_str |
Revista Caatinga |
collection |
Revista Caatinga |
repository.name.fl_str_mv |
Revista Caatinga - Universidade Federal Rural do Semi-Árido (UFERSA) |
repository.mail.fl_str_mv |
patricio@ufersa.edu.br|| caatinga@ufersa.edu.br |
_version_ |
1822181057120698368 |
dc.identifier.doi.none.fl_str_mv |
10.1590/1983-21252022v35n218rc |