Factors affecting the structure and maintenance of phytoplankton functional groups in a nutrient rich lowland river

Autores
Devercelli, M.; O'Farrell, I.
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The phytoplankton structure along the mainstem of the Lower Salado River (Argentina) was analysed in relation to the environmental variables and the influence exerted by the inflowing waters from the Paraná River (via El Vado Stream) and an adjacent floodplain shallow lake, between December 2003 and August 2004. Phytoplankton driving forces were explored using a functional approach. Small phytoplanktonic organisms with high metabolism and well adapted to live in mixed environments dominated (functional groups C, D, X1, X2), but the organic enrichment and slow flow also facilitated the thriving of Cyanobacteria (LO and minor contributions of H1, K, SN) and large Euglenophyta (W1, W2) inflowing from adjacent sites. The longitudinal and temporal changes in the phytoplankton structure depended on the prevailing hydrological conditions. Three scenarios were identified as regards the complex hydrological interactions of the Paraná and Salado Rivers: (i) the hydrological isolation period (low waters) when the Salado had a homogeneous longitudinal pattern and high phytoplankton development; (ii) the period of hydrological interactions with Salado River influence (high waters) when the homogeneous longitudinal pattern extended to the stream, and algal growth in the river was counteracted by dilution and enhancement of water velocity, and (iii) the period of hydrological interactions with Paraná System influence characterised by a longitudinal discontinuity with lower phytoplankton concentrations downriver the Paraná inflow due to dilution. There were no evidences that the lake contributed with algal biomass to the downriver plankton during the study period. © 2012 Elsevier GmbH.
Fil:Devercelli, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:O'Farrell, I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fuente
Limnologica 2013;43(2):67-78
Materia
Functional groups
Hydrological conditions
Physical factors
Potamoplankton
Rivers
alga
biomass
dominance
environmental effect
environmental factor
functional group
hydrological cycle
inflow
metabolism
phytoplankton
river flow
river water
temporal variation
Argentina
Buenos Aires [Argentina]
Salado River
algae
Cyanobacteria
Euglenida
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/2.5/ar
Repositorio
Biblioteca Digital (UBA-FCEN)
Institución
Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
OAI Identificador
paperaa:paper_00759511_v43_n2_p67_Devercelli

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oai_identifier_str paperaa:paper_00759511_v43_n2_p67_Devercelli
network_acronym_str BDUBAFCEN
repository_id_str 1896
network_name_str Biblioteca Digital (UBA-FCEN)
spelling Factors affecting the structure and maintenance of phytoplankton functional groups in a nutrient rich lowland riverDevercelli, M.O'Farrell, I.Functional groupsHydrological conditionsPhysical factorsPotamoplanktonRiversalgabiomassdominanceenvironmental effectenvironmental factorfunctional grouphydrological cycleinflowmetabolismphytoplanktonriver flowriver watertemporal variationArgentinaBuenos Aires [Argentina]Salado RiveralgaeCyanobacteriaEuglenidaThe phytoplankton structure along the mainstem of the Lower Salado River (Argentina) was analysed in relation to the environmental variables and the influence exerted by the inflowing waters from the Paraná River (via El Vado Stream) and an adjacent floodplain shallow lake, between December 2003 and August 2004. Phytoplankton driving forces were explored using a functional approach. Small phytoplanktonic organisms with high metabolism and well adapted to live in mixed environments dominated (functional groups C, D, X1, X2), but the organic enrichment and slow flow also facilitated the thriving of Cyanobacteria (LO and minor contributions of H1, K, SN) and large Euglenophyta (W1, W2) inflowing from adjacent sites. The longitudinal and temporal changes in the phytoplankton structure depended on the prevailing hydrological conditions. Three scenarios were identified as regards the complex hydrological interactions of the Paraná and Salado Rivers: (i) the hydrological isolation period (low waters) when the Salado had a homogeneous longitudinal pattern and high phytoplankton development; (ii) the period of hydrological interactions with Salado River influence (high waters) when the homogeneous longitudinal pattern extended to the stream, and algal growth in the river was counteracted by dilution and enhancement of water velocity, and (iii) the period of hydrological interactions with Paraná System influence characterised by a longitudinal discontinuity with lower phytoplankton concentrations downriver the Paraná inflow due to dilution. There were no evidences that the lake contributed with algal biomass to the downriver plankton during the study period. © 2012 Elsevier GmbH.Fil:Devercelli, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.Fil:O'Farrell, I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.2013info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12110/paper_00759511_v43_n2_p67_DevercelliLimnologica 2013;43(2):67-78reponame:Biblioteca Digital (UBA-FCEN)instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesinstacron:UBA-FCENenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/2.5/ar2025-09-29T13:43:09Zpaperaa:paper_00759511_v43_n2_p67_DevercelliInstitucionalhttps://digital.bl.fcen.uba.ar/Universidad públicaNo correspondehttps://digital.bl.fcen.uba.ar/cgi-bin/oaiserver.cgiana@bl.fcen.uba.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:18962025-09-29 13:43:10.337Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesfalse
dc.title.none.fl_str_mv Factors affecting the structure and maintenance of phytoplankton functional groups in a nutrient rich lowland river
title Factors affecting the structure and maintenance of phytoplankton functional groups in a nutrient rich lowland river
spellingShingle Factors affecting the structure and maintenance of phytoplankton functional groups in a nutrient rich lowland river
Devercelli, M.
Functional groups
Hydrological conditions
Physical factors
Potamoplankton
Rivers
alga
biomass
dominance
environmental effect
environmental factor
functional group
hydrological cycle
inflow
metabolism
phytoplankton
river flow
river water
temporal variation
Argentina
Buenos Aires [Argentina]
Salado River
algae
Cyanobacteria
Euglenida
title_short Factors affecting the structure and maintenance of phytoplankton functional groups in a nutrient rich lowland river
title_full Factors affecting the structure and maintenance of phytoplankton functional groups in a nutrient rich lowland river
title_fullStr Factors affecting the structure and maintenance of phytoplankton functional groups in a nutrient rich lowland river
title_full_unstemmed Factors affecting the structure and maintenance of phytoplankton functional groups in a nutrient rich lowland river
title_sort Factors affecting the structure and maintenance of phytoplankton functional groups in a nutrient rich lowland river
dc.creator.none.fl_str_mv Devercelli, M.
O'Farrell, I.
author Devercelli, M.
author_facet Devercelli, M.
O'Farrell, I.
author_role author
author2 O'Farrell, I.
author2_role author
dc.subject.none.fl_str_mv Functional groups
Hydrological conditions
Physical factors
Potamoplankton
Rivers
alga
biomass
dominance
environmental effect
environmental factor
functional group
hydrological cycle
inflow
metabolism
phytoplankton
river flow
river water
temporal variation
Argentina
Buenos Aires [Argentina]
Salado River
algae
Cyanobacteria
Euglenida
topic Functional groups
Hydrological conditions
Physical factors
Potamoplankton
Rivers
alga
biomass
dominance
environmental effect
environmental factor
functional group
hydrological cycle
inflow
metabolism
phytoplankton
river flow
river water
temporal variation
Argentina
Buenos Aires [Argentina]
Salado River
algae
Cyanobacteria
Euglenida
dc.description.none.fl_txt_mv The phytoplankton structure along the mainstem of the Lower Salado River (Argentina) was analysed in relation to the environmental variables and the influence exerted by the inflowing waters from the Paraná River (via El Vado Stream) and an adjacent floodplain shallow lake, between December 2003 and August 2004. Phytoplankton driving forces were explored using a functional approach. Small phytoplanktonic organisms with high metabolism and well adapted to live in mixed environments dominated (functional groups C, D, X1, X2), but the organic enrichment and slow flow also facilitated the thriving of Cyanobacteria (LO and minor contributions of H1, K, SN) and large Euglenophyta (W1, W2) inflowing from adjacent sites. The longitudinal and temporal changes in the phytoplankton structure depended on the prevailing hydrological conditions. Three scenarios were identified as regards the complex hydrological interactions of the Paraná and Salado Rivers: (i) the hydrological isolation period (low waters) when the Salado had a homogeneous longitudinal pattern and high phytoplankton development; (ii) the period of hydrological interactions with Salado River influence (high waters) when the homogeneous longitudinal pattern extended to the stream, and algal growth in the river was counteracted by dilution and enhancement of water velocity, and (iii) the period of hydrological interactions with Paraná System influence characterised by a longitudinal discontinuity with lower phytoplankton concentrations downriver the Paraná inflow due to dilution. There were no evidences that the lake contributed with algal biomass to the downriver plankton during the study period. © 2012 Elsevier GmbH.
Fil:Devercelli, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:O'Farrell, I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
description The phytoplankton structure along the mainstem of the Lower Salado River (Argentina) was analysed in relation to the environmental variables and the influence exerted by the inflowing waters from the Paraná River (via El Vado Stream) and an adjacent floodplain shallow lake, between December 2003 and August 2004. Phytoplankton driving forces were explored using a functional approach. Small phytoplanktonic organisms with high metabolism and well adapted to live in mixed environments dominated (functional groups C, D, X1, X2), but the organic enrichment and slow flow also facilitated the thriving of Cyanobacteria (LO and minor contributions of H1, K, SN) and large Euglenophyta (W1, W2) inflowing from adjacent sites. The longitudinal and temporal changes in the phytoplankton structure depended on the prevailing hydrological conditions. Three scenarios were identified as regards the complex hydrological interactions of the Paraná and Salado Rivers: (i) the hydrological isolation period (low waters) when the Salado had a homogeneous longitudinal pattern and high phytoplankton development; (ii) the period of hydrological interactions with Salado River influence (high waters) when the homogeneous longitudinal pattern extended to the stream, and algal growth in the river was counteracted by dilution and enhancement of water velocity, and (iii) the period of hydrological interactions with Paraná System influence characterised by a longitudinal discontinuity with lower phytoplankton concentrations downriver the Paraná inflow due to dilution. There were no evidences that the lake contributed with algal biomass to the downriver plankton during the study period. © 2012 Elsevier GmbH.
publishDate 2013
dc.date.none.fl_str_mv 2013
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12110/paper_00759511_v43_n2_p67_Devercelli
url http://hdl.handle.net/20.500.12110/paper_00759511_v43_n2_p67_Devercelli
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/2.5/ar
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/2.5/ar
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Limnologica 2013;43(2):67-78
reponame:Biblioteca Digital (UBA-FCEN)
instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron:UBA-FCEN
reponame_str Biblioteca Digital (UBA-FCEN)
collection Biblioteca Digital (UBA-FCEN)
instname_str Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron_str UBA-FCEN
institution UBA-FCEN
repository.name.fl_str_mv Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
repository.mail.fl_str_mv ana@bl.fcen.uba.ar
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