Microbial faecal pollution of river water in a watershed of tropical Ethiopian highlands is driven by diffuse pollution sources

Detalhes bibliográficos
Autor(a) principal: Mushi, Douglas
Data de Publicação: 2021
Outros Autores: Kebede, Geda, Linke, Rita B., Lakew, Aschalew, Hayes, Daniel S., Graf, Wolfram, Farnleitner, Andreas H.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.5/21856
Resumo: Journal of Water and Health
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spelling Microbial faecal pollution of river water in a watershed of tropical Ethiopian highlands is driven by diffuse pollution sourcescatchment landscapediffuse pollution sourcefaecal indicator bacteriafaecal taxationriverine watersoilJournal of Water and HealthTropical communities in the developing world depend heavily on riverine systems for their socioeconomic development. However, these resources are poorly protected from diffuse pollution, and there is a lack of quantitative information regarding the microbial pollution characteristics of riverine water, despite frequently reported gastrointestinal diseases. The aim of our study was to apply faecal taxation (i.e., faecal pellet counting in representative test areas to estimate the potential availability of diffuse pollution sources) in combination with a detailed microbiological faecal pollution analysis in a riverine environment to elucidate the importance of diffuse pollution. To realize this approach, ambient faecal pellets, a multiparametric data set for standard faecal indicator bacteria (SFIB), including Escherichia coli, Clostridium perfringens spores and enterococci from catchment soil and river water, and a number of riverine water physicochemical variables were analysed during a one-year cycle. We demonstrated that the abundance of ambient faecal pellets, which were consistently counted at reference sites in the catchment, was associated with faecal pollution in the river water. Water SFIB, dissolved oxygen, nutrients, conductivity and total suspended solids were strongly linked with the abundance of ambient faecal pellets in the river catchment, as demonstrated by principal component analysis (PCA). Elevated concentrations of SFIB in the riverine water in the absence of rainfall also suggested the direct input of faecal bacteria into the riverine water by livestock (e.g., during watering) and humans (e.g., during bathing). Statistical analyses further revealed that the microbiological water quality of the investigated riverine water was not influenced by SFIB potentially occurring in the soil. This study demonstrates the importance of diffuse faecal pollution sources as major drivers of the microbiological quality of riverine water in the Ethiopian highlands. In addition, the new successfully applied integrated approach could be very useful for developing predictive models, which would aid in forecasting riverine microbiological quality in tropical developing countriesIWA PublishingRepositório da Universidade de LisboaMushi, DouglasKebede, GedaLinke, Rita B.Lakew, AschalewHayes, Daniel S.Graf, WolframFarnleitner, Andreas H.2021-09-17T10:22:55Z20212021-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/21856engJournal of Water and Health Vol 19 No 4, 57510.2166/wh.2021.269info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-03-06T14:51:24Zoai:www.repository.utl.pt:10400.5/21856Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T17:06:24.173121Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Microbial faecal pollution of river water in a watershed of tropical Ethiopian highlands is driven by diffuse pollution sources
title Microbial faecal pollution of river water in a watershed of tropical Ethiopian highlands is driven by diffuse pollution sources
spellingShingle Microbial faecal pollution of river water in a watershed of tropical Ethiopian highlands is driven by diffuse pollution sources
Mushi, Douglas
catchment landscape
diffuse pollution source
faecal indicator bacteria
faecal taxation
riverine water
soil
title_short Microbial faecal pollution of river water in a watershed of tropical Ethiopian highlands is driven by diffuse pollution sources
title_full Microbial faecal pollution of river water in a watershed of tropical Ethiopian highlands is driven by diffuse pollution sources
title_fullStr Microbial faecal pollution of river water in a watershed of tropical Ethiopian highlands is driven by diffuse pollution sources
title_full_unstemmed Microbial faecal pollution of river water in a watershed of tropical Ethiopian highlands is driven by diffuse pollution sources
title_sort Microbial faecal pollution of river water in a watershed of tropical Ethiopian highlands is driven by diffuse pollution sources
author Mushi, Douglas
author_facet Mushi, Douglas
Kebede, Geda
Linke, Rita B.
Lakew, Aschalew
Hayes, Daniel S.
Graf, Wolfram
Farnleitner, Andreas H.
author_role author
author2 Kebede, Geda
Linke, Rita B.
Lakew, Aschalew
Hayes, Daniel S.
Graf, Wolfram
Farnleitner, Andreas H.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Mushi, Douglas
Kebede, Geda
Linke, Rita B.
Lakew, Aschalew
Hayes, Daniel S.
Graf, Wolfram
Farnleitner, Andreas H.
dc.subject.por.fl_str_mv catchment landscape
diffuse pollution source
faecal indicator bacteria
faecal taxation
riverine water
soil
topic catchment landscape
diffuse pollution source
faecal indicator bacteria
faecal taxation
riverine water
soil
description Journal of Water and Health
publishDate 2021
dc.date.none.fl_str_mv 2021-09-17T10:22:55Z
2021
2021-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.5/21856
url http://hdl.handle.net/10400.5/21856
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of Water and Health Vol 19 No 4, 575
10.2166/wh.2021.269
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv IWA Publishing
publisher.none.fl_str_mv IWA Publishing
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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