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
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/84113
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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) |
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openAccess |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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