The Oxygen Deficit in Jurumirim Reservoir (Paranapanema River, São Paulo, Brazil)

Detalhes bibliográficos
Autor(a) principal: Henry, Raoul
Data de Publicação: 1992
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.3739/rikusui.53.379
http://hdl.handle.net/11449/230875
Resumo: Oxygen actual and relative deficits in Jurumirim Reservoir were computed from the temperature and dissolved oxygen profiles determined in a study from March 1988 to March 1989. The reservoir presented an isothermy from June to September and a thermal stratification from October to March. Thermocline was always located at the 1/3 deeper zone of the water column. Clinograde oxygen profiles were observed during the thermal stratification period. Water in the reservoir was always well oxygenated until 20m depth along the year. At the bottom (25m depth), O2content decreased significantly during the thermal stratification period. Thus, the deficits were higher at the bottom. Total oxygen actual and relative deficits for all the reservoir ranged from 0.03 to 0.72 mg • cm-2and from 0.013 to 0.032 mg • cm-2• day”1, respectively. Using other trophic status indices such as Secchi disk transparency and chlorophyll-a concentration as well as the oxygen deficits, Jurumirim Reservoir can be categorized in the oligotrophic class. © 1992, The Japanese Society of Limnology. All rights reserved.
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spelling The Oxygen Deficit in Jurumirim Reservoir (Paranapanema River, São Paulo, Brazil)chlorophyll-aoxygen deficitthermal structuretropical reservoirwater transparencyOxygen actual and relative deficits in Jurumirim Reservoir were computed from the temperature and dissolved oxygen profiles determined in a study from March 1988 to March 1989. The reservoir presented an isothermy from June to September and a thermal stratification from October to March. Thermocline was always located at the 1/3 deeper zone of the water column. Clinograde oxygen profiles were observed during the thermal stratification period. Water in the reservoir was always well oxygenated until 20m depth along the year. At the bottom (25m depth), O2content decreased significantly during the thermal stratification period. Thus, the deficits were higher at the bottom. Total oxygen actual and relative deficits for all the reservoir ranged from 0.03 to 0.72 mg • cm-2and from 0.013 to 0.032 mg • cm-2• day”1, respectively. Using other trophic status indices such as Secchi disk transparency and chlorophyll-a concentration as well as the oxygen deficits, Jurumirim Reservoir can be categorized in the oligotrophic class. © 1992, The Japanese Society of Limnology. All rights reserved.Department of Zoology Institute of Biosciences, UNESP, C. P. 502, 18610, BotucatuUniversidade Estadual Paulista (UNESP)Henry, Raoul2022-04-29T08:42:26Z2022-04-29T08:42:26Z1992-02-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article379-384http://dx.doi.org/10.3739/rikusui.53.379Japanese Journal of Limnology (Rikusuigaku Zasshi), v. 53, n. 4, p. 379-384, 1992.1882-48970021-5104http://hdl.handle.net/11449/23087510.3739/rikusui.53.3792-s2.0-0027027866Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJapanese Journal of Limnology (Rikusuigaku Zasshi)info:eu-repo/semantics/openAccess2022-04-29T08:42:26Zoai:repositorio.unesp.br:11449/230875Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:25:19.396653Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv The Oxygen Deficit in Jurumirim Reservoir (Paranapanema River, São Paulo, Brazil)
title The Oxygen Deficit in Jurumirim Reservoir (Paranapanema River, São Paulo, Brazil)
spellingShingle The Oxygen Deficit in Jurumirim Reservoir (Paranapanema River, São Paulo, Brazil)
Henry, Raoul
chlorophyll-a
oxygen deficit
thermal structure
tropical reservoir
water transparency
title_short The Oxygen Deficit in Jurumirim Reservoir (Paranapanema River, São Paulo, Brazil)
title_full The Oxygen Deficit in Jurumirim Reservoir (Paranapanema River, São Paulo, Brazil)
title_fullStr The Oxygen Deficit in Jurumirim Reservoir (Paranapanema River, São Paulo, Brazil)
title_full_unstemmed The Oxygen Deficit in Jurumirim Reservoir (Paranapanema River, São Paulo, Brazil)
title_sort The Oxygen Deficit in Jurumirim Reservoir (Paranapanema River, São Paulo, Brazil)
author Henry, Raoul
author_facet Henry, Raoul
author_role author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
dc.contributor.author.fl_str_mv Henry, Raoul
dc.subject.por.fl_str_mv chlorophyll-a
oxygen deficit
thermal structure
tropical reservoir
water transparency
topic chlorophyll-a
oxygen deficit
thermal structure
tropical reservoir
water transparency
description Oxygen actual and relative deficits in Jurumirim Reservoir were computed from the temperature and dissolved oxygen profiles determined in a study from March 1988 to March 1989. The reservoir presented an isothermy from June to September and a thermal stratification from October to March. Thermocline was always located at the 1/3 deeper zone of the water column. Clinograde oxygen profiles were observed during the thermal stratification period. Water in the reservoir was always well oxygenated until 20m depth along the year. At the bottom (25m depth), O2content decreased significantly during the thermal stratification period. Thus, the deficits were higher at the bottom. Total oxygen actual and relative deficits for all the reservoir ranged from 0.03 to 0.72 mg • cm-2and from 0.013 to 0.032 mg • cm-2• day”1, respectively. Using other trophic status indices such as Secchi disk transparency and chlorophyll-a concentration as well as the oxygen deficits, Jurumirim Reservoir can be categorized in the oligotrophic class. © 1992, The Japanese Society of Limnology. All rights reserved.
publishDate 1992
dc.date.none.fl_str_mv 1992-02-01
2022-04-29T08:42:26Z
2022-04-29T08:42:26Z
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/10.3739/rikusui.53.379
Japanese Journal of Limnology (Rikusuigaku Zasshi), v. 53, n. 4, p. 379-384, 1992.
1882-4897
0021-5104
http://hdl.handle.net/11449/230875
10.3739/rikusui.53.379
2-s2.0-0027027866
url http://dx.doi.org/10.3739/rikusui.53.379
http://hdl.handle.net/11449/230875
identifier_str_mv Japanese Journal of Limnology (Rikusuigaku Zasshi), v. 53, n. 4, p. 379-384, 1992.
1882-4897
0021-5104
10.3739/rikusui.53.379
2-s2.0-0027027866
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Japanese Journal of Limnology (Rikusuigaku Zasshi)
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 379-384
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_ 1808128648478195712