Does artificial drawdown affect zooplankton structure in shallow lakes? A short-term study in a tropical reservoir
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s10750-017-3193-4 http://hdl.handle.net/11449/174515 |
Resumo: | Water level fluctuation by artificial drawdown is one management activity that has the potential to control macrophyte growth, but there is little knowledge of how this operational procedure affects other biotic components of the ecosystem. This study investigated zooplankton dynamics in response to artificial drawdown over a short timeframe (13 days) in a Brazilian reservoir, by examining the impact on zooplankton communities in two shallow lakes (Lake Pedra Branca-LPB, and Guaritá-LG) connected to a reservoir (Salto Grande) that undergo sudden and remarkable fluctuations in their water levels. Zooplankton communities were sampled in both lakes before (pre-drawdown), during (low water), and after (post-drawdown) the artificial drawdown procedure. In LPB, drawdown resulted in an increase in zooplankton density, and temporarily changed the community in association with an increase in water conductivity and presence of non-planktonic organisms during the low water phase. In LG, drawdown had no significant effect on zooplankton community between the phases before and during the drawdown event. The results from this study suggest that artificial drawdown over a short timeframe in reservoir systems do not negatively affect the overall density, richness, and diversity of zooplankton communities in marginal shallow lakes. |
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Repositório Institucional da UNESP |
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Does artificial drawdown affect zooplankton structure in shallow lakes? A short-term study in a tropical reservoirBiodiversityMicrocrustaceansRegulated riversRemedial measuresRotifersSubmerged plantsWater level fluctuation by artificial drawdown is one management activity that has the potential to control macrophyte growth, but there is little knowledge of how this operational procedure affects other biotic components of the ecosystem. This study investigated zooplankton dynamics in response to artificial drawdown over a short timeframe (13 days) in a Brazilian reservoir, by examining the impact on zooplankton communities in two shallow lakes (Lake Pedra Branca-LPB, and Guaritá-LG) connected to a reservoir (Salto Grande) that undergo sudden and remarkable fluctuations in their water levels. Zooplankton communities were sampled in both lakes before (pre-drawdown), during (low water), and after (post-drawdown) the artificial drawdown procedure. In LPB, drawdown resulted in an increase in zooplankton density, and temporarily changed the community in association with an increase in water conductivity and presence of non-planktonic organisms during the low water phase. In LG, drawdown had no significant effect on zooplankton community between the phases before and during the drawdown event. The results from this study suggest that artificial drawdown over a short timeframe in reservoir systems do not negatively affect the overall density, richness, and diversity of zooplankton communities in marginal shallow lakes.Departamento de Zoologia Universidade Estadual Paulista (UNESP), Distrito de Rubião Júnior s/nDepartamento de Zoologia Universidade Estadual Paulista (UNESP), Distrito de Rubião Júnior s/nUniversidade Estadual Paulista (Unesp)Portinho, Jorge Laço [UNESP]Nogueira, Marcos Gomes [UNESP]2018-12-11T17:11:31Z2018-12-11T17:11:31Z2017-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article303-318application/pdfhttp://dx.doi.org/10.1007/s10750-017-3193-4Hydrobiologia, v. 797, n. 1, p. 303-318, 2017.1573-51170018-8158http://hdl.handle.net/11449/17451510.1007/s10750-017-3193-42-s2.0-850184690562-s2.0-85018469056.pdf8695790056366967Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengHydrobiologia0,896info:eu-repo/semantics/openAccess2024-01-01T06:15:11Zoai:repositorio.unesp.br:11449/174515Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:49:23.236460Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Does artificial drawdown affect zooplankton structure in shallow lakes? A short-term study in a tropical reservoir |
title |
Does artificial drawdown affect zooplankton structure in shallow lakes? A short-term study in a tropical reservoir |
spellingShingle |
Does artificial drawdown affect zooplankton structure in shallow lakes? A short-term study in a tropical reservoir Portinho, Jorge Laço [UNESP] Biodiversity Microcrustaceans Regulated rivers Remedial measures Rotifers Submerged plants |
title_short |
Does artificial drawdown affect zooplankton structure in shallow lakes? A short-term study in a tropical reservoir |
title_full |
Does artificial drawdown affect zooplankton structure in shallow lakes? A short-term study in a tropical reservoir |
title_fullStr |
Does artificial drawdown affect zooplankton structure in shallow lakes? A short-term study in a tropical reservoir |
title_full_unstemmed |
Does artificial drawdown affect zooplankton structure in shallow lakes? A short-term study in a tropical reservoir |
title_sort |
Does artificial drawdown affect zooplankton structure in shallow lakes? A short-term study in a tropical reservoir |
author |
Portinho, Jorge Laço [UNESP] |
author_facet |
Portinho, Jorge Laço [UNESP] Nogueira, Marcos Gomes [UNESP] |
author_role |
author |
author2 |
Nogueira, Marcos Gomes [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Portinho, Jorge Laço [UNESP] Nogueira, Marcos Gomes [UNESP] |
dc.subject.por.fl_str_mv |
Biodiversity Microcrustaceans Regulated rivers Remedial measures Rotifers Submerged plants |
topic |
Biodiversity Microcrustaceans Regulated rivers Remedial measures Rotifers Submerged plants |
description |
Water level fluctuation by artificial drawdown is one management activity that has the potential to control macrophyte growth, but there is little knowledge of how this operational procedure affects other biotic components of the ecosystem. This study investigated zooplankton dynamics in response to artificial drawdown over a short timeframe (13 days) in a Brazilian reservoir, by examining the impact on zooplankton communities in two shallow lakes (Lake Pedra Branca-LPB, and Guaritá-LG) connected to a reservoir (Salto Grande) that undergo sudden and remarkable fluctuations in their water levels. Zooplankton communities were sampled in both lakes before (pre-drawdown), during (low water), and after (post-drawdown) the artificial drawdown procedure. In LPB, drawdown resulted in an increase in zooplankton density, and temporarily changed the community in association with an increase in water conductivity and presence of non-planktonic organisms during the low water phase. In LG, drawdown had no significant effect on zooplankton community between the phases before and during the drawdown event. The results from this study suggest that artificial drawdown over a short timeframe in reservoir systems do not negatively affect the overall density, richness, and diversity of zooplankton communities in marginal shallow lakes. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-08-01 2018-12-11T17:11:31Z 2018-12-11T17:11:31Z |
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://dx.doi.org/10.1007/s10750-017-3193-4 Hydrobiologia, v. 797, n. 1, p. 303-318, 2017. 1573-5117 0018-8158 http://hdl.handle.net/11449/174515 10.1007/s10750-017-3193-4 2-s2.0-85018469056 2-s2.0-85018469056.pdf 8695790056366967 |
url |
http://dx.doi.org/10.1007/s10750-017-3193-4 http://hdl.handle.net/11449/174515 |
identifier_str_mv |
Hydrobiologia, v. 797, n. 1, p. 303-318, 2017. 1573-5117 0018-8158 10.1007/s10750-017-3193-4 2-s2.0-85018469056 2-s2.0-85018469056.pdf 8695790056366967 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Hydrobiologia 0,896 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
303-318 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129362253316096 |