Abundance of zooplankton from different zones (pelagic and littoral) and time periods (morning and night) in two Amazonian meandering lakes
Autor(a) principal: | |
---|---|
Data de Publicação: | 2003 |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.4025/actascibiolsci.v25i2.2011 http://hdl.handle.net/11449/67341 |
Resumo: | The abundance of zooplankton in two lakes of Southwest Amazonia was studied for 10 months in different regions and at different periods of the day. The lakes were Lago Amapá, located at 10°02′36″S, 67°50′24″W, and Lago Pirapora, at 9°27′21″S, 67°31′39″. Both lakes are characterized as oxbow lakes. The aim of this study was to compare the pelagic and littoral regions, as well as to determine differences in the distribution of zooplankton in the water column in the morning and at night. Collections were made by filtering water through a 55μm zooplankton net into a 5L Van Dorn bottle, collecting 4L from the top and 5L from the middle and bottom layers, totaling 14L of water for each sampling location. In addition, physical and chemical parameters were measured, including transparency, temperature, pH, dissolved oxygen, electrical conductivity and turbidity. Anova (analysis of variance) and Tukey's test were used. There was no statistically significant difference between the regions studied, nor between the two time periods examined. The results of the Pearson correlation (p<0.05) demonstrated that the physical and chemical characteristics of the water correlated with the cladocerans Moina spp. (represented by M. minuta and M. reticulata) and Ceriodaphnia cornuta, and that Daphnia gessneri was associated with Chaoboridae. |
id |
UNSP_ae71a44b2a2e0259600a064f81933c80 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/67341 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Abundance of zooplankton from different zones (pelagic and littoral) and time periods (morning and night) in two Amazonian meandering lakesAbandoned meanderPelagic and littoral regionsZooplanktondissolved oxygenriver waterBrazillittoralnonhumanpelagic zoneriverseasonal variationwater samplingzooplanktonCeriodaphnia cornutaChaoboridaeDaphnia gessneriMoinaMoina minutaMoina reticulataThe abundance of zooplankton in two lakes of Southwest Amazonia was studied for 10 months in different regions and at different periods of the day. The lakes were Lago Amapá, located at 10°02′36″S, 67°50′24″W, and Lago Pirapora, at 9°27′21″S, 67°31′39″. Both lakes are characterized as oxbow lakes. The aim of this study was to compare the pelagic and littoral regions, as well as to determine differences in the distribution of zooplankton in the water column in the morning and at night. Collections were made by filtering water through a 55μm zooplankton net into a 5L Van Dorn bottle, collecting 4L from the top and 5L from the middle and bottom layers, totaling 14L of water for each sampling location. In addition, physical and chemical parameters were measured, including transparency, temperature, pH, dissolved oxygen, electrical conductivity and turbidity. Anova (analysis of variance) and Tukey's test were used. There was no statistically significant difference between the regions studied, nor between the two time periods examined. The results of the Pearson correlation (p<0.05) demonstrated that the physical and chemical characteristics of the water correlated with the cladocerans Moina spp. (represented by M. minuta and M. reticulata) and Ceriodaphnia cornuta, and that Daphnia gessneri was associated with Chaoboridae.Centro de Aquicultura, Av. Carlos Tonnani, Jaboticabal, São PauloUniversidade de São Paulo e Universidade do Acre Campus Universitário, Distrito Industrial, ParaUniversidade Estadual Paulista (Unesp)Keppeler, Erlei Cassiano2014-05-27T11:20:41Z2014-05-27T11:20:41Z2003-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article287-297application/pdfhttp://dx.doi.org/10.4025/actascibiolsci.v25i2.2011Acta Scientiarum - Biological Sciences, v. 25, n. 2, p. 287-297, 2003.1679-9283http://hdl.handle.net/11449/6734110.4025/actascibiolsci.v25i2.20112-s2.0-234444585612-s2.0-23444458561.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengActa Scientiarum: Biological Sciences0,208info:eu-repo/semantics/openAccess2023-10-17T06:06:43Zoai:repositorio.unesp.br:11449/67341Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-10-17T06:06:43Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Abundance of zooplankton from different zones (pelagic and littoral) and time periods (morning and night) in two Amazonian meandering lakes |
title |
Abundance of zooplankton from different zones (pelagic and littoral) and time periods (morning and night) in two Amazonian meandering lakes |
spellingShingle |
Abundance of zooplankton from different zones (pelagic and littoral) and time periods (morning and night) in two Amazonian meandering lakes Keppeler, Erlei Cassiano Abandoned meander Pelagic and littoral regions Zooplankton dissolved oxygen river water Brazil littoral nonhuman pelagic zone river seasonal variation water sampling zooplankton Ceriodaphnia cornuta Chaoboridae Daphnia gessneri Moina Moina minuta Moina reticulata |
title_short |
Abundance of zooplankton from different zones (pelagic and littoral) and time periods (morning and night) in two Amazonian meandering lakes |
title_full |
Abundance of zooplankton from different zones (pelagic and littoral) and time periods (morning and night) in two Amazonian meandering lakes |
title_fullStr |
Abundance of zooplankton from different zones (pelagic and littoral) and time periods (morning and night) in two Amazonian meandering lakes |
title_full_unstemmed |
Abundance of zooplankton from different zones (pelagic and littoral) and time periods (morning and night) in two Amazonian meandering lakes |
title_sort |
Abundance of zooplankton from different zones (pelagic and littoral) and time periods (morning and night) in two Amazonian meandering lakes |
author |
Keppeler, Erlei Cassiano |
author_facet |
Keppeler, Erlei Cassiano |
author_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Keppeler, Erlei Cassiano |
dc.subject.por.fl_str_mv |
Abandoned meander Pelagic and littoral regions Zooplankton dissolved oxygen river water Brazil littoral nonhuman pelagic zone river seasonal variation water sampling zooplankton Ceriodaphnia cornuta Chaoboridae Daphnia gessneri Moina Moina minuta Moina reticulata |
topic |
Abandoned meander Pelagic and littoral regions Zooplankton dissolved oxygen river water Brazil littoral nonhuman pelagic zone river seasonal variation water sampling zooplankton Ceriodaphnia cornuta Chaoboridae Daphnia gessneri Moina Moina minuta Moina reticulata |
description |
The abundance of zooplankton in two lakes of Southwest Amazonia was studied for 10 months in different regions and at different periods of the day. The lakes were Lago Amapá, located at 10°02′36″S, 67°50′24″W, and Lago Pirapora, at 9°27′21″S, 67°31′39″. Both lakes are characterized as oxbow lakes. The aim of this study was to compare the pelagic and littoral regions, as well as to determine differences in the distribution of zooplankton in the water column in the morning and at night. Collections were made by filtering water through a 55μm zooplankton net into a 5L Van Dorn bottle, collecting 4L from the top and 5L from the middle and bottom layers, totaling 14L of water for each sampling location. In addition, physical and chemical parameters were measured, including transparency, temperature, pH, dissolved oxygen, electrical conductivity and turbidity. Anova (analysis of variance) and Tukey's test were used. There was no statistically significant difference between the regions studied, nor between the two time periods examined. The results of the Pearson correlation (p<0.05) demonstrated that the physical and chemical characteristics of the water correlated with the cladocerans Moina spp. (represented by M. minuta and M. reticulata) and Ceriodaphnia cornuta, and that Daphnia gessneri was associated with Chaoboridae. |
publishDate |
2003 |
dc.date.none.fl_str_mv |
2003-07-01 2014-05-27T11:20:41Z 2014-05-27T11:20:41Z |
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/10.4025/actascibiolsci.v25i2.2011 Acta Scientiarum - Biological Sciences, v. 25, n. 2, p. 287-297, 2003. 1679-9283 http://hdl.handle.net/11449/67341 10.4025/actascibiolsci.v25i2.2011 2-s2.0-23444458561 2-s2.0-23444458561.pdf |
url |
http://dx.doi.org/10.4025/actascibiolsci.v25i2.2011 http://hdl.handle.net/11449/67341 |
identifier_str_mv |
Acta Scientiarum - Biological Sciences, v. 25, n. 2, p. 287-297, 2003. 1679-9283 10.4025/actascibiolsci.v25i2.2011 2-s2.0-23444458561 2-s2.0-23444458561.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Acta Scientiarum: Biological Sciences 0,208 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
287-297 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_ |
1803046034808504320 |