Effect of environmental variables on epiphyton in a pampean lake with stable turbid- and clear-water states

Autores
Cano, María Gabriela; Casco, María Adela; Claps, María Cristina
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In the present study, we examined the variation in composition and biomass of epi-phyton growing on the bulrush Schoenoplectus californicus in a pampean lake that passed through a turbid- and a clear-water period within an annual cycle. Monthly sampling was performed year-round at the center and periphery of a bulrush stand. We measured the physicochem-ical parameters in the water column using standardized field and laboratory methods. The epiphy-ton was sampled by sectioning bulrush stems into segments for pigment analysis, abundance measurements, and biovolume quantification. Two different types of communities were observed during the annual cycle. In the turbid-water period, epiphyton biomass and diversity remained low despite sufficient levels of phosphates. An abrupt increase in epiphyton biomass, along with structural changes in the community, occurred after an improvement in water transparency, suggesting that the epiphyton was strongly dependent on underwater light conditions. Differences in epiphyton composition and biomass between the center and the periphery of the bulrush stand were negligible. We conclude that the availability of colonizing surface is not a relevant driver for the colonization and growth of these epiphyton assemblages. The epiphyton in pampean lakes may remain stable and resilient for relatively long periods, even when confronted with environmental perturbations, and changes in these communities will only occur in relation to radical alterations in light and nutrient availability.
Facultad de Ciencias Naturales y Museo
Materia
Biología
Algal epiphyton
Argentina
Bulrush
Community resilience
Light climate
Pampean lakes
Total phosphorus
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/84113

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repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Effect of environmental variables on epiphyton in a pampean lake with stable turbid- and clear-water statesCano, María GabrielaCasco, María AdelaClaps, María CristinaBiologíaAlgal epiphytonArgentinaBulrushCommunity resilienceLight climatePampean lakesTotal phosphorusIn the present study, we examined the variation in composition and biomass of epi-phyton growing on the bulrush Schoenoplectus californicus in a pampean lake that passed through a turbid- and a clear-water period within an annual cycle. Monthly sampling was performed year-round at the center and periphery of a bulrush stand. We measured the physicochem-ical parameters in the water column using standardized field and laboratory methods. The epiphy-ton was sampled by sectioning bulrush stems into segments for pigment analysis, abundance measurements, and biovolume quantification. Two different types of communities were observed during the annual cycle. In the turbid-water period, epiphyton biomass and diversity remained low despite sufficient levels of phosphates. An abrupt increase in epiphyton biomass, along with structural changes in the community, occurred after an improvement in water transparency, suggesting that the epiphyton was strongly dependent on underwater light conditions. Differences in epiphyton composition and biomass between the center and the periphery of the bulrush stand were negligible. We conclude that the availability of colonizing surface is not a relevant driver for the colonization and growth of these epiphyton assemblages. The epiphyton in pampean lakes may remain stable and resilient for relatively long periods, even when confronted with environmental perturbations, and changes in these communities will only occur in relation to radical alterations in light and nutrient availability.Facultad de Ciencias Naturales y Museo2012info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf47-59http://sedici.unlp.edu.ar/handle/10915/84113enginfo:eu-repo/semantics/altIdentifier/issn/1864-7782info:eu-repo/semantics/altIdentifier/doi/10.3354/ab00409info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-03T10:48:20Zoai:sedici.unlp.edu.ar:10915/84113Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 10:48:20.433SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Effect of environmental variables on epiphyton in a pampean lake with stable turbid- and clear-water states
title Effect of environmental variables on epiphyton in a pampean lake with stable turbid- and clear-water states
spellingShingle Effect of environmental variables on epiphyton in a pampean lake with stable turbid- and clear-water states
Cano, María Gabriela
Biología
Algal epiphyton
Argentina
Bulrush
Community resilience
Light climate
Pampean lakes
Total phosphorus
title_short Effect of environmental variables on epiphyton in a pampean lake with stable turbid- and clear-water states
title_full Effect of environmental variables on epiphyton in a pampean lake with stable turbid- and clear-water states
title_fullStr Effect of environmental variables on epiphyton in a pampean lake with stable turbid- and clear-water states
title_full_unstemmed Effect of environmental variables on epiphyton in a pampean lake with stable turbid- and clear-water states
title_sort Effect of environmental variables on epiphyton in a pampean lake with stable turbid- and clear-water states
dc.creator.none.fl_str_mv Cano, María Gabriela
Casco, María Adela
Claps, María Cristina
author Cano, María Gabriela
author_facet Cano, María Gabriela
Casco, María Adela
Claps, María Cristina
author_role author
author2 Casco, María Adela
Claps, María Cristina
author2_role author
author
dc.subject.none.fl_str_mv Biología
Algal epiphyton
Argentina
Bulrush
Community resilience
Light climate
Pampean lakes
Total phosphorus
topic Biología
Algal epiphyton
Argentina
Bulrush
Community resilience
Light climate
Pampean lakes
Total phosphorus
dc.description.none.fl_txt_mv In the present study, we examined the variation in composition and biomass of epi-phyton growing on the bulrush Schoenoplectus californicus in a pampean lake that passed through a turbid- and a clear-water period within an annual cycle. Monthly sampling was performed year-round at the center and periphery of a bulrush stand. We measured the physicochem-ical parameters in the water column using standardized field and laboratory methods. The epiphy-ton was sampled by sectioning bulrush stems into segments for pigment analysis, abundance measurements, and biovolume quantification. Two different types of communities were observed during the annual cycle. In the turbid-water period, epiphyton biomass and diversity remained low despite sufficient levels of phosphates. An abrupt increase in epiphyton biomass, along with structural changes in the community, occurred after an improvement in water transparency, suggesting that the epiphyton was strongly dependent on underwater light conditions. Differences in epiphyton composition and biomass between the center and the periphery of the bulrush stand were negligible. We conclude that the availability of colonizing surface is not a relevant driver for the colonization and growth of these epiphyton assemblages. The epiphyton in pampean lakes may remain stable and resilient for relatively long periods, even when confronted with environmental perturbations, and changes in these communities will only occur in relation to radical alterations in light and nutrient availability.
Facultad de Ciencias Naturales y Museo
description In the present study, we examined the variation in composition and biomass of epi-phyton growing on the bulrush Schoenoplectus californicus in a pampean lake that passed through a turbid- and a clear-water period within an annual cycle. Monthly sampling was performed year-round at the center and periphery of a bulrush stand. We measured the physicochem-ical parameters in the water column using standardized field and laboratory methods. The epiphy-ton was sampled by sectioning bulrush stems into segments for pigment analysis, abundance measurements, and biovolume quantification. Two different types of communities were observed during the annual cycle. In the turbid-water period, epiphyton biomass and diversity remained low despite sufficient levels of phosphates. An abrupt increase in epiphyton biomass, along with structural changes in the community, occurred after an improvement in water transparency, suggesting that the epiphyton was strongly dependent on underwater light conditions. Differences in epiphyton composition and biomass between the center and the periphery of the bulrush stand were negligible. We conclude that the availability of colonizing surface is not a relevant driver for the colonization and growth of these epiphyton assemblages. The epiphyton in pampean lakes may remain stable and resilient for relatively long periods, even when confronted with environmental perturbations, and changes in these communities will only occur in relation to radical alterations in light and nutrient availability.
publishDate 2012
dc.date.none.fl_str_mv 2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/84113
url http://sedici.unlp.edu.ar/handle/10915/84113
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1864-7782
info:eu-repo/semantics/altIdentifier/doi/10.3354/ab00409
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
47-59
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instname:Universidad Nacional de La Plata
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
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