Modelling the impact of sediment management on the trophic state of a tropical reservoir with high water storage variations
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Anais da Academia Brasileira de Ciências (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000100601 |
Resumo: | Abstract Eutrophication of lakes has affected society in many regions, particularly in water scarce environments where: i) low runoff reduces the self-purification potential of water bodies; ii) water supply relies on surface reservoirs, which are susceptible to nutrient enrichment. This work presents an assessment of the impact of the silted sediment management on the trophic status of a tropical surface reservoir with intense temporal variability of water storage. A complete mixing model describing the total phosphorus budget in the water and sediments was used, based on semi-empirical formulations. The sediment reuse as soil fertilizer has been proposed to increase productivity in small scale agriculture, which should also enhance the water quality by removing the nutrient-enriched sediment from lakes. Model application for a 40-years period indicate that sediment management may improve water quality, changing from poor to acceptable trophic state during roughly 10% of the time when the reservoir is not empty. |
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Anais da Academia Brasileira de Ciências (Online) |
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Modelling the impact of sediment management on the trophic state of a tropical reservoir with high water storage variationsWater-sediment interactionsediment reuseeutrophicationwater quality modellingtropical reservoirAbstract Eutrophication of lakes has affected society in many regions, particularly in water scarce environments where: i) low runoff reduces the self-purification potential of water bodies; ii) water supply relies on surface reservoirs, which are susceptible to nutrient enrichment. This work presents an assessment of the impact of the silted sediment management on the trophic status of a tropical surface reservoir with intense temporal variability of water storage. A complete mixing model describing the total phosphorus budget in the water and sediments was used, based on semi-empirical formulations. The sediment reuse as soil fertilizer has been proposed to increase productivity in small scale agriculture, which should also enhance the water quality by removing the nutrient-enriched sediment from lakes. Model application for a 40-years period indicate that sediment management may improve water quality, changing from poor to acceptable trophic state during roughly 10% of the time when the reservoir is not empty.Academia Brasileira de Ciências2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000100601Anais da Academia Brasileira de Ciências v.92 n.1 2020reponame:Anais da Academia Brasileira de Ciências (Online)instname:Academia Brasileira de Ciências (ABC)instacron:ABC10.1590/0001-3765202020181169info:eu-repo/semantics/openAccessLIRA,CAMILA C.SMEDEIROS,PEDRO H.A.NETO,IRAN E. LIMAeng2020-02-12T00:00:00Zoai:scielo:S0001-37652020000100601Revistahttp://www.scielo.br/aabchttps://old.scielo.br/oai/scielo-oai.php||aabc@abc.org.br1678-26900001-3765opendoar:2020-02-12T00:00Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)false |
dc.title.none.fl_str_mv |
Modelling the impact of sediment management on the trophic state of a tropical reservoir with high water storage variations |
title |
Modelling the impact of sediment management on the trophic state of a tropical reservoir with high water storage variations |
spellingShingle |
Modelling the impact of sediment management on the trophic state of a tropical reservoir with high water storage variations LIRA,CAMILA C.S Water-sediment interaction sediment reuse eutrophication water quality modelling tropical reservoir |
title_short |
Modelling the impact of sediment management on the trophic state of a tropical reservoir with high water storage variations |
title_full |
Modelling the impact of sediment management on the trophic state of a tropical reservoir with high water storage variations |
title_fullStr |
Modelling the impact of sediment management on the trophic state of a tropical reservoir with high water storage variations |
title_full_unstemmed |
Modelling the impact of sediment management on the trophic state of a tropical reservoir with high water storage variations |
title_sort |
Modelling the impact of sediment management on the trophic state of a tropical reservoir with high water storage variations |
author |
LIRA,CAMILA C.S |
author_facet |
LIRA,CAMILA C.S MEDEIROS,PEDRO H.A. NETO,IRAN E. LIMA |
author_role |
author |
author2 |
MEDEIROS,PEDRO H.A. NETO,IRAN E. LIMA |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
LIRA,CAMILA C.S MEDEIROS,PEDRO H.A. NETO,IRAN E. LIMA |
dc.subject.por.fl_str_mv |
Water-sediment interaction sediment reuse eutrophication water quality modelling tropical reservoir |
topic |
Water-sediment interaction sediment reuse eutrophication water quality modelling tropical reservoir |
description |
Abstract Eutrophication of lakes has affected society in many regions, particularly in water scarce environments where: i) low runoff reduces the self-purification potential of water bodies; ii) water supply relies on surface reservoirs, which are susceptible to nutrient enrichment. This work presents an assessment of the impact of the silted sediment management on the trophic status of a tropical surface reservoir with intense temporal variability of water storage. A complete mixing model describing the total phosphorus budget in the water and sediments was used, based on semi-empirical formulations. The sediment reuse as soil fertilizer has been proposed to increase productivity in small scale agriculture, which should also enhance the water quality by removing the nutrient-enriched sediment from lakes. Model application for a 40-years period indicate that sediment management may improve water quality, changing from poor to acceptable trophic state during roughly 10% of the time when the reservoir is not empty. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000100601 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000100601 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0001-3765202020181169 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Academia Brasileira de Ciências |
publisher.none.fl_str_mv |
Academia Brasileira de Ciências |
dc.source.none.fl_str_mv |
Anais da Academia Brasileira de Ciências v.92 n.1 2020 reponame:Anais da Academia Brasileira de Ciências (Online) instname:Academia Brasileira de Ciências (ABC) instacron:ABC |
instname_str |
Academia Brasileira de Ciências (ABC) |
instacron_str |
ABC |
institution |
ABC |
reponame_str |
Anais da Academia Brasileira de Ciências (Online) |
collection |
Anais da Academia Brasileira de Ciências (Online) |
repository.name.fl_str_mv |
Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC) |
repository.mail.fl_str_mv |
||aabc@abc.org.br |
_version_ |
1754302868185153536 |