Euglenoid morphospecies replacement along a hydraulic gradient of the Lower Paraná Basin (Argentina)

1. This study deals with the distribution of euglenoid morphospecies along the length of the Lower Paraná River floodplain. Six sites located in the Paraná River, Estevez stream and Montiel shallow lake were surveyed monthly from May 1995 to April 1996. 2. Eighty-eight infrageneric taxa were registe...

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Detalles Bibliográficos
Publicado: 2005
Materias:
Euglenoids
Floodplain
Hydraulic gradient
Limnology
Paraná River
ecotone
flagellate
hydraulic property
morphotype
species richness
Parana Basin
South America
Western Hemisphere
World
Euglena
Euglenida
Lepocinclis
Phacus longicauda
Strombomonas girardiana
Trachelomonas hispida
Trachelomonas similis
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00465070_v50_n4_p616_Tell
http://hdl.handle.net/20.500.12110/paper_00465070_v50_n4_p616_Tell
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00465070_v50_n4_p616_Tell
record_format dspace
spelling paper:paper_00465070_v50_n4_p616_Tell2023-06-08T15:05:29Z Euglenoid morphospecies replacement along a hydraulic gradient of the Lower Paraná Basin (Argentina) Euglenoids Floodplain Hydraulic gradient Limnology Paraná River ecotone flagellate hydraulic property morphotype species richness Parana Basin South America Western Hemisphere World Euglena Euglenida Lepocinclis Phacus longicauda Strombomonas girardiana Trachelomonas hispida Trachelomonas similis 1. This study deals with the distribution of euglenoid morphospecies along the length of the Lower Paraná River floodplain. Six sites located in the Paraná River, Estevez stream and Montiel shallow lake were surveyed monthly from May 1995 to April 1996. 2. Eighty-eight infrageneric taxa were registered though the total density percentage of euglenoids seldom exceeded 15% of total phytoplankton. The increasing species richness towards the lake is mostly the result of a high contribution of species of Trachelomonas and naked infrageneric taxa of Euglena, Lepocinclis and Phacus, while the distribution of Strombomonas species along the transect is fairly constant. 3. The richness of euglenoid morphospecies follows a pattern opposite to that found for the entire phytoplankton community. The distribution of euglenoids differs among the three habitats defined in this study: river, stream, shallow lake. These differences depend on the hydraulic condition of each habitat, as revealed by canonical correspondence analysis. 4. The degree of association with each type of aquatic habitat varied among the species and differed between water phases. Strombomonas fluviatilis was equally constant along the length of the ecotone, while S. girardiana and S. scabra were particularly associated with the Paraná River and P. longicauda, L. truncata, T. hispida and T. similis with the lake. 5. The flood pulse establishes a clear pattern both in species richness and abundance of euglenoids. The number of species recorded during high water was more than twice that recorded during low water. © 2005 Blackwell Publishing Ltd. 2005 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00465070_v50_n4_p616_Tell http://hdl.handle.net/20.500.12110/paper_00465070_v50_n4_p616_Tell
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Euglenoids
Floodplain
Hydraulic gradient
Limnology
Paraná River
ecotone
flagellate
hydraulic property
morphotype
species richness
Parana Basin
South America
Western Hemisphere
World
Euglena
Euglenida
Lepocinclis
Phacus longicauda
Strombomonas girardiana
Trachelomonas hispida
Trachelomonas similis
spellingShingle Euglenoids
Floodplain
Hydraulic gradient
Limnology
Paraná River
ecotone
flagellate
hydraulic property
morphotype
species richness
Parana Basin
South America
Western Hemisphere
World
Euglena
Euglenida
Lepocinclis
Phacus longicauda
Strombomonas girardiana
Trachelomonas hispida
Trachelomonas similis
Euglenoid morphospecies replacement along a hydraulic gradient of the Lower Paraná Basin (Argentina)
topic_facet Euglenoids
Floodplain
Hydraulic gradient
Limnology
Paraná River
ecotone
flagellate
hydraulic property
morphotype
species richness
Parana Basin
South America
Western Hemisphere
World
Euglena
Euglenida
Lepocinclis
Phacus longicauda
Strombomonas girardiana
Trachelomonas hispida
Trachelomonas similis
description 1. This study deals with the distribution of euglenoid morphospecies along the length of the Lower Paraná River floodplain. Six sites located in the Paraná River, Estevez stream and Montiel shallow lake were surveyed monthly from May 1995 to April 1996. 2. Eighty-eight infrageneric taxa were registered though the total density percentage of euglenoids seldom exceeded 15% of total phytoplankton. The increasing species richness towards the lake is mostly the result of a high contribution of species of Trachelomonas and naked infrageneric taxa of Euglena, Lepocinclis and Phacus, while the distribution of Strombomonas species along the transect is fairly constant. 3. The richness of euglenoid morphospecies follows a pattern opposite to that found for the entire phytoplankton community. The distribution of euglenoids differs among the three habitats defined in this study: river, stream, shallow lake. These differences depend on the hydraulic condition of each habitat, as revealed by canonical correspondence analysis. 4. The degree of association with each type of aquatic habitat varied among the species and differed between water phases. Strombomonas fluviatilis was equally constant along the length of the ecotone, while S. girardiana and S. scabra were particularly associated with the Paraná River and P. longicauda, L. truncata, T. hispida and T. similis with the lake. 5. The flood pulse establishes a clear pattern both in species richness and abundance of euglenoids. The number of species recorded during high water was more than twice that recorded during low water. © 2005 Blackwell Publishing Ltd.
title Euglenoid morphospecies replacement along a hydraulic gradient of the Lower Paraná Basin (Argentina)
title_short Euglenoid morphospecies replacement along a hydraulic gradient of the Lower Paraná Basin (Argentina)
title_full Euglenoid morphospecies replacement along a hydraulic gradient of the Lower Paraná Basin (Argentina)
title_fullStr Euglenoid morphospecies replacement along a hydraulic gradient of the Lower Paraná Basin (Argentina)
title_full_unstemmed Euglenoid morphospecies replacement along a hydraulic gradient of the Lower Paraná Basin (Argentina)
title_sort euglenoid morphospecies replacement along a hydraulic gradient of the lower paraná basin (argentina)
publishDate 2005
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00465070_v50_n4_p616_Tell
http://hdl.handle.net/20.500.12110/paper_00465070_v50_n4_p616_Tell
_version_ 1768545321403547648

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