Influence of re-flooding on phytoplankton assemblages in a temperate wetland following prolonged drought

Wetlands can experience drying and flooding cycles which influence the dynamics of the phytoplankton assemblages. The aim of our study was to evaluate changes in the phytoplankton structure during a drought/flood period in a warm-temperate wetland. We hypothesized that fluctuations in water level an...

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Autores principales: Avigliano, L., Vinocur, A., Chaparro, G., Tell, G., Allende, L.
Formato: JOUR
Materias:
Biodiversity
Drought
Flood
Phytoplankton
Shallow lake
Wetland
community dynamics
community structure
drought
flooding
functional group
lake
macrophyte
phytoplankton
succession
temperate environment
wetland
Argentina
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_11295767_v73_n2_p45_Avigliano
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_11295767_v73_n2_p45_Avigliano
record_format dspace
spelling todo:paper_11295767_v73_n2_p45_Avigliano2023-10-03T16:07:47Z Influence of re-flooding on phytoplankton assemblages in a temperate wetland following prolonged drought Avigliano, L. Vinocur, A. Chaparro, G. Tell, G. Allende, L. Biodiversity Drought Flood Phytoplankton Shallow lake Wetland community dynamics community structure drought flooding functional group lake macrophyte phytoplankton succession temperate environment wetland Argentina Wetlands can experience drying and flooding cycles which influence the dynamics of the phytoplankton assemblages. The aim of our study was to evaluate changes in the phytoplankton structure during a drought/flood period in a warm-temperate wetland. We hypothesized that fluctuations in water level and development of macrophytes favour the development of fast-growing algae with adaptations to low light conditions. We studied algal and cyanobacterial colonization and succession in the nascent planktonic habitat in a wetland in the Southern Hemisphere (Argentina). We assessed changes in phytoplankton biovolume, chlorophyll a concentration (Chl a), richness, diversity, and evenness throughout a drought/flood period. Phytoplankton species were classified into ecological functional groups (FG). Multivariate analysis (RDA) showed that water level, conductivity and percentage macrophyte cover of the site surface (PCSS) explained the variability in the phytoplankton assemblage structure in terms of classes and FG. Particularly, FGs T and LM responded to the changes during the drought/flood cycle, probably due to light constraints and stability of the water column induced by the development of emergent and freefloating macrophytes. Our study expands the knowledge of phytoplankton species composition and ecological FG succession under freefloating macrophyte cover in a re-flooding episode. We conclude that water depth and development of macrophytes are the key factors in shaping phytoplankton species structure in a temporary wetland. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_11295767_v73_n2_p45_Avigliano
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Biodiversity
Drought
Flood
Phytoplankton
Shallow lake
Wetland
community dynamics
community structure
drought
flooding
functional group
lake
macrophyte
phytoplankton
succession
temperate environment
wetland
Argentina
spellingShingle Biodiversity
Drought
Flood
Phytoplankton
Shallow lake
Wetland
community dynamics
community structure
drought
flooding
functional group
lake
macrophyte
phytoplankton
succession
temperate environment
wetland
Argentina
Avigliano, L.
Vinocur, A.
Chaparro, G.
Tell, G.
Allende, L.
Influence of re-flooding on phytoplankton assemblages in a temperate wetland following prolonged drought
topic_facet Biodiversity
Drought
Flood
Phytoplankton
Shallow lake
Wetland
community dynamics
community structure
drought
flooding
functional group
lake
macrophyte
phytoplankton
succession
temperate environment
wetland
Argentina
description Wetlands can experience drying and flooding cycles which influence the dynamics of the phytoplankton assemblages. The aim of our study was to evaluate changes in the phytoplankton structure during a drought/flood period in a warm-temperate wetland. We hypothesized that fluctuations in water level and development of macrophytes favour the development of fast-growing algae with adaptations to low light conditions. We studied algal and cyanobacterial colonization and succession in the nascent planktonic habitat in a wetland in the Southern Hemisphere (Argentina). We assessed changes in phytoplankton biovolume, chlorophyll a concentration (Chl a), richness, diversity, and evenness throughout a drought/flood period. Phytoplankton species were classified into ecological functional groups (FG). Multivariate analysis (RDA) showed that water level, conductivity and percentage macrophyte cover of the site surface (PCSS) explained the variability in the phytoplankton assemblage structure in terms of classes and FG. Particularly, FGs T and LM responded to the changes during the drought/flood cycle, probably due to light constraints and stability of the water column induced by the development of emergent and freefloating macrophytes. Our study expands the knowledge of phytoplankton species composition and ecological FG succession under freefloating macrophyte cover in a re-flooding episode. We conclude that water depth and development of macrophytes are the key factors in shaping phytoplankton species structure in a temporary wetland.
format JOUR
author Avigliano, L.
Vinocur, A.
Chaparro, G.
Tell, G.
Allende, L.
author_facet Avigliano, L.
Vinocur, A.
Chaparro, G.
Tell, G.
Allende, L.
author_sort Avigliano, L.
title Influence of re-flooding on phytoplankton assemblages in a temperate wetland following prolonged drought
title_short Influence of re-flooding on phytoplankton assemblages in a temperate wetland following prolonged drought
title_full Influence of re-flooding on phytoplankton assemblages in a temperate wetland following prolonged drought
title_fullStr Influence of re-flooding on phytoplankton assemblages in a temperate wetland following prolonged drought
title_full_unstemmed Influence of re-flooding on phytoplankton assemblages in a temperate wetland following prolonged drought
title_sort influence of re-flooding on phytoplankton assemblages in a temperate wetland following prolonged drought
url http://hdl.handle.net/20.500.12110/paper_11295767_v73_n2_p45_Avigliano
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AT vinocura influenceofrefloodingonphytoplanktonassemblagesinatemperatewetlandfollowingprolongeddrought
AT chaparrog influenceofrefloodingonphytoplanktonassemblagesinatemperatewetlandfollowingprolongeddrought
AT tellg influenceofrefloodingonphytoplanktonassemblagesinatemperatewetlandfollowingprolongeddrought
AT allendel influenceofrefloodingonphytoplanktonassemblagesinatemperatewetlandfollowingprolongeddrought
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