Colonization and Succession of Zooplankton After a Drought: Influence of Hydrology and Free-Floating Plant Dynamics in a Floodplain Lake

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We analyzed zooplankton colonization and succession following a temporary drought in a vegetated lake from a floodplain wetland of the Lower Paraná River (Argentina). We took samples of zooplankton and phytoplankton at four habitats of the lake characterized by the presence-absence of emergent or fr...

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Autores principales: Chaparro, G., Fontanarrosa, M.S., O’Farrell, I.
Formato: JOUR
Materias:
Community composition
Disturbance
Habitat heterogeneity
Littoral and pelagic species
aquatic plant
colonization
community composition
drought stress
environmental disturbance
floodplain
lake ecosystem
phytoplankton
population dynamics
succession
water level
zooplankton
Parana River
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_02775212_v36_n1_p85_Chaparro
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_02775212_v36_n1_p85_Chaparro
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spelling todo:paper_02775212_v36_n1_p85_Chaparro2023-10-03T15:16:07Z Colonization and Succession of Zooplankton After a Drought: Influence of Hydrology and Free-Floating Plant Dynamics in a Floodplain Lake Chaparro, G. Fontanarrosa, M.S. O’Farrell, I. Community composition Disturbance Habitat heterogeneity Littoral and pelagic species aquatic plant colonization community composition drought stress environmental disturbance floodplain lake ecosystem phytoplankton population dynamics succession water level zooplankton Parana River We analyzed zooplankton colonization and succession following a temporary drought in a vegetated lake from a floodplain wetland of the Lower Paraná River (Argentina). We took samples of zooplankton and phytoplankton at four habitats of the lake characterized by the presence-absence of emergent or free-floating macrophytes along a 18-month period after the drought. Microzooplankton dominated along the study and macrozooplankton showed seasonal increments in cold seasons. Temporal patterns of broad taxonomic zooplankton groups were associated to hydrology-driven factors, like changes in water depth, conductivity and edible phytoplankton and seasonal changes and not related with free-floating plants. Nevertheless, spatial and temporal patterns of species composition were closely linked to the dynamics of free-floating plants. A clear shift from pelagic to littoral zooplankton taxa was registered when free-floating plants colonized. This study expands the knowledge on the composition and dynamics of zooplankton from floodplain lakes after the disturbance caused by a severe drought. Our results highlight the influence of water level fluctuations as drivers of zooplankton abundance and the joint effect of seasonal changes and free-floating plant dynamics on zooplankton species composition and richness. © 2015, Society of Wetland Scientists. Fil:Chaparro, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Fontanarrosa, M.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_02775212_v36_n1_p85_Chaparro
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Community composition
Disturbance
Habitat heterogeneity
Littoral and pelagic species
aquatic plant
colonization
community composition
drought stress
environmental disturbance
floodplain
lake ecosystem
phytoplankton
population dynamics
succession
water level
zooplankton
Parana River
spellingShingle Community composition
Disturbance
Habitat heterogeneity
Littoral and pelagic species
aquatic plant
colonization
community composition
drought stress
environmental disturbance
floodplain
lake ecosystem
phytoplankton
population dynamics
succession
water level
zooplankton
Parana River
Chaparro, G.
Fontanarrosa, M.S.
O’Farrell, I.
Colonization and Succession of Zooplankton After a Drought: Influence of Hydrology and Free-Floating Plant Dynamics in a Floodplain Lake
topic_facet Community composition
Disturbance
Habitat heterogeneity
Littoral and pelagic species
aquatic plant
colonization
community composition
drought stress
environmental disturbance
floodplain
lake ecosystem
phytoplankton
population dynamics
succession
water level
zooplankton
Parana River
description We analyzed zooplankton colonization and succession following a temporary drought in a vegetated lake from a floodplain wetland of the Lower Paraná River (Argentina). We took samples of zooplankton and phytoplankton at four habitats of the lake characterized by the presence-absence of emergent or free-floating macrophytes along a 18-month period after the drought. Microzooplankton dominated along the study and macrozooplankton showed seasonal increments in cold seasons. Temporal patterns of broad taxonomic zooplankton groups were associated to hydrology-driven factors, like changes in water depth, conductivity and edible phytoplankton and seasonal changes and not related with free-floating plants. Nevertheless, spatial and temporal patterns of species composition were closely linked to the dynamics of free-floating plants. A clear shift from pelagic to littoral zooplankton taxa was registered when free-floating plants colonized. This study expands the knowledge on the composition and dynamics of zooplankton from floodplain lakes after the disturbance caused by a severe drought. Our results highlight the influence of water level fluctuations as drivers of zooplankton abundance and the joint effect of seasonal changes and free-floating plant dynamics on zooplankton species composition and richness. © 2015, Society of Wetland Scientists.
format JOUR
author Chaparro, G.
Fontanarrosa, M.S.
O’Farrell, I.
author_facet Chaparro, G.
Fontanarrosa, M.S.
O’Farrell, I.
author_sort Chaparro, G.
title Colonization and Succession of Zooplankton After a Drought: Influence of Hydrology and Free-Floating Plant Dynamics in a Floodplain Lake
title_short Colonization and Succession of Zooplankton After a Drought: Influence of Hydrology and Free-Floating Plant Dynamics in a Floodplain Lake
title_full Colonization and Succession of Zooplankton After a Drought: Influence of Hydrology and Free-Floating Plant Dynamics in a Floodplain Lake
title_fullStr Colonization and Succession of Zooplankton After a Drought: Influence of Hydrology and Free-Floating Plant Dynamics in a Floodplain Lake
title_full_unstemmed Colonization and Succession of Zooplankton After a Drought: Influence of Hydrology and Free-Floating Plant Dynamics in a Floodplain Lake
title_sort colonization and succession of zooplankton after a drought: influence of hydrology and free-floating plant dynamics in a floodplain lake
url http://hdl.handle.net/20.500.12110/paper_02775212_v36_n1_p85_Chaparro
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AT fontanarrosams colonizationandsuccessionofzooplanktonafteradroughtinfluenceofhydrologyandfreefloatingplantdynamicsinafloodplainlake
AT ofarrelli colonizationandsuccessionofzooplanktonafteradroughtinfluenceofhydrologyandfreefloatingplantdynamicsinafloodplainlake
_version_ 1807315334047203328

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