Effect of spatial heterogeneity on zooplankton diversity: A multi-scale habitat approximation in a floodplain lake

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Environmental heterogeneity is an essential quality of ecosystems as it has important implications in community structure. Macrophytes are a main component of environmental heterogeneity in floodplain lakes, and their dynamics are highly influenced by water level changes. In this context, we analyse...

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Autores principales: Chaparro, G., Kandus, P., O'Farrell, I.
Formato: INPR
Lenguaje:English
Materias:
Diversity
Macrophytes
Remote sensing
Spatial patterns
Water level
Zooplankton
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_15351459_v_n_p_Chaparro
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_15351459_v_n_p_Chaparro
record_format dspace
spelling todo:paper_15351459_v_n_p_Chaparro2023-10-03T16:21:42Z Effect of spatial heterogeneity on zooplankton diversity: A multi-scale habitat approximation in a floodplain lake Chaparro, G. Kandus, P. O'Farrell, I. Diversity Macrophytes Remote sensing Spatial patterns Water level Zooplankton Environmental heterogeneity is an essential quality of ecosystems as it has important implications in community structure. Macrophytes are a main component of environmental heterogeneity in floodplain lakes, and their dynamics are highly influenced by water level changes. In this context, we analysed at different spatial scales the relationship among hydrological variations, environmental heterogeneity associated to macrophytes and zooplankton regional diversity (γ diversity) in a South American floodplain lake adjacent to the Paraná River, and we also compared the local zooplankton diversity (α diversity) among the different environments that comprised the lake heterogeneity. At very low waters, the environmental heterogeneity was reduced as the lake was mainly limited to open water areas with low zooplankton diversity. At high waters, the profuse vegetation development (emergent and free-floating), in mixed or homogeneous patches, determined a higher lake environmental heterogeneity with enhanced regional zooplankton diversity; littoral species increased over limnetic ones. Zooplankton α diversity was higher in environments with free-floating macrophytes than in those without these plants. The structural complexity in the water column provided by plant roots would be closely related to the enhanced diversity found under free-floating mats. This study contributes to the knowledge on the effects of strong water level variations on environmental heterogeneity, which is strongly associated to macrophytes and on zooplankton diversity, and highlights the role of free-floating plants as diversity hosts and 'key structures' in floodplain lakes. © 2013 John Wiley & Sons, Ltd. Fil:Chaparro, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Kandus, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:O'Farrell, I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. INPR English info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_15351459_v_n_p_Chaparro
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language English
orig_language_str_mv English
topic Diversity
Macrophytes
Remote sensing
Spatial patterns
Water level
Zooplankton
spellingShingle Diversity
Macrophytes
Remote sensing
Spatial patterns
Water level
Zooplankton
Chaparro, G.
Kandus, P.
O'Farrell, I.
Effect of spatial heterogeneity on zooplankton diversity: A multi-scale habitat approximation in a floodplain lake
topic_facet Diversity
Macrophytes
Remote sensing
Spatial patterns
Water level
Zooplankton
description Environmental heterogeneity is an essential quality of ecosystems as it has important implications in community structure. Macrophytes are a main component of environmental heterogeneity in floodplain lakes, and their dynamics are highly influenced by water level changes. In this context, we analysed at different spatial scales the relationship among hydrological variations, environmental heterogeneity associated to macrophytes and zooplankton regional diversity (γ diversity) in a South American floodplain lake adjacent to the Paraná River, and we also compared the local zooplankton diversity (α diversity) among the different environments that comprised the lake heterogeneity. At very low waters, the environmental heterogeneity was reduced as the lake was mainly limited to open water areas with low zooplankton diversity. At high waters, the profuse vegetation development (emergent and free-floating), in mixed or homogeneous patches, determined a higher lake environmental heterogeneity with enhanced regional zooplankton diversity; littoral species increased over limnetic ones. Zooplankton α diversity was higher in environments with free-floating macrophytes than in those without these plants. The structural complexity in the water column provided by plant roots would be closely related to the enhanced diversity found under free-floating mats. This study contributes to the knowledge on the effects of strong water level variations on environmental heterogeneity, which is strongly associated to macrophytes and on zooplankton diversity, and highlights the role of free-floating plants as diversity hosts and 'key structures' in floodplain lakes. © 2013 John Wiley & Sons, Ltd.
format INPR
author Chaparro, G.
Kandus, P.
O'Farrell, I.
author_facet Chaparro, G.
Kandus, P.
O'Farrell, I.
author_sort Chaparro, G.
title Effect of spatial heterogeneity on zooplankton diversity: A multi-scale habitat approximation in a floodplain lake
title_short Effect of spatial heterogeneity on zooplankton diversity: A multi-scale habitat approximation in a floodplain lake
title_full Effect of spatial heterogeneity on zooplankton diversity: A multi-scale habitat approximation in a floodplain lake
title_fullStr Effect of spatial heterogeneity on zooplankton diversity: A multi-scale habitat approximation in a floodplain lake
title_full_unstemmed Effect of spatial heterogeneity on zooplankton diversity: A multi-scale habitat approximation in a floodplain lake
title_sort effect of spatial heterogeneity on zooplankton diversity: a multi-scale habitat approximation in a floodplain lake
url http://hdl.handle.net/20.500.12110/paper_15351459_v_n_p_Chaparro
work_keys_str_mv AT chaparrog effectofspatialheterogeneityonzooplanktondiversityamultiscalehabitatapproximationinafloodplainlake
AT kandusp effectofspatialheterogeneityonzooplanktondiversityamultiscalehabitatapproximationinafloodplainlake
AT ofarrelli effectofspatialheterogeneityonzooplanktondiversityamultiscalehabitatapproximationinafloodplainlake
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