Bloom forming cyanobacterial complexes co-occurring in a subtropical large reservoir: Validation of dominant eco-strategies

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In this study, we analyse the spatial distribution of cyanobacterial summer blooms in a large subtropical reservoir located in the Uruguay River, from 2007 to 2011; these extraordinary algal growth events are mainly represented by scum-forming and nitrogen-fixing eco-strategists of the Dolichospermu...

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Autores principales:	O'Farrell, I., Bordet, F., Chaparro, G.
Formato:	JOUR
Materias:	Blooms Cyanobacteria Eco-strategies Subtropical reservoir abundance algal bloom annual variation cyanobacterium ecophysiology growth rate hydrological cycle Landsat thematic mapper morphometry nitrogen fixation population density reservoir spatial distribution subtropical region temporal variation Uruguay River algae Microcystis
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00188158_v698_n1_p175_OFarrell
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_00188158_v698_n1_p175_OFarrell
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spelling	todo:paper_00188158_v698_n1_p175_OFarrell2023-10-03T14:16:06Z Bloom forming cyanobacterial complexes co-occurring in a subtropical large reservoir: Validation of dominant eco-strategies O'Farrell, I. Bordet, F. Chaparro, G. Blooms Cyanobacteria Eco-strategies Subtropical reservoir abundance algal bloom annual variation cyanobacterium ecophysiology growth rate hydrological cycle Landsat thematic mapper morphometry nitrogen fixation population density reservoir spatial distribution subtropical region temporal variation Uruguay River algae Cyanobacteria Microcystis In this study, we analyse the spatial distribution of cyanobacterial summer blooms in a large subtropical reservoir located in the Uruguay River, from 2007 to 2011; these extraordinary algal growth events are mainly represented by scum-forming and nitrogen-fixing eco-strategists of the Dolichospermum and Microcystis genera. The use of the eco-strategists approach, based on ecophysiological work and field observations, allowed us to explain the differences in the distribution pattern and temporal dynamics of both cyanobacterial complexes. Spatial differences were produced due to much higher and fluctuating cyanobacterial abundances at the right margin of the reservoir and at the littoral areas closer to the dam. Satellite imagery (LANDSAT 5 TM) clearly depicted the stronger algal development in the reservoir arms and in the section closer to the dam. The Microcystis spp. complex achieved higher density than the Dolichospermum spp. complex. We hypothesise that the hydrological cycle explains the inter-annual fluctuations of the intensity and frequency of cyanobacterial blooms, and that spatial differences in cyanobacterial presence between the reservoir arms, its margins and the main channel is mainly a response to morphometrical and hydrological characteristics. © 2012 Springer Science+Business Media B.V. Fil:O'Farrell, I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Chaparro, G. 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_00188158_v698_n1_p175_OFarrell
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Blooms Cyanobacteria Eco-strategies Subtropical reservoir abundance algal bloom annual variation cyanobacterium ecophysiology growth rate hydrological cycle Landsat thematic mapper morphometry nitrogen fixation population density reservoir spatial distribution subtropical region temporal variation Uruguay River algae Cyanobacteria Microcystis
spellingShingle	Blooms Cyanobacteria Eco-strategies Subtropical reservoir abundance algal bloom annual variation cyanobacterium ecophysiology growth rate hydrological cycle Landsat thematic mapper morphometry nitrogen fixation population density reservoir spatial distribution subtropical region temporal variation Uruguay River algae Cyanobacteria Microcystis O'Farrell, I. Bordet, F. Chaparro, G. Bloom forming cyanobacterial complexes co-occurring in a subtropical large reservoir: Validation of dominant eco-strategies
topic_facet	Blooms Cyanobacteria Eco-strategies Subtropical reservoir abundance algal bloom annual variation cyanobacterium ecophysiology growth rate hydrological cycle Landsat thematic mapper morphometry nitrogen fixation population density reservoir spatial distribution subtropical region temporal variation Uruguay River algae Cyanobacteria Microcystis
description	In this study, we analyse the spatial distribution of cyanobacterial summer blooms in a large subtropical reservoir located in the Uruguay River, from 2007 to 2011; these extraordinary algal growth events are mainly represented by scum-forming and nitrogen-fixing eco-strategists of the Dolichospermum and Microcystis genera. The use of the eco-strategists approach, based on ecophysiological work and field observations, allowed us to explain the differences in the distribution pattern and temporal dynamics of both cyanobacterial complexes. Spatial differences were produced due to much higher and fluctuating cyanobacterial abundances at the right margin of the reservoir and at the littoral areas closer to the dam. Satellite imagery (LANDSAT 5 TM) clearly depicted the stronger algal development in the reservoir arms and in the section closer to the dam. The Microcystis spp. complex achieved higher density than the Dolichospermum spp. complex. We hypothesise that the hydrological cycle explains the inter-annual fluctuations of the intensity and frequency of cyanobacterial blooms, and that spatial differences in cyanobacterial presence between the reservoir arms, its margins and the main channel is mainly a response to morphometrical and hydrological characteristics. © 2012 Springer Science+Business Media B.V.
format	JOUR
author	O'Farrell, I. Bordet, F. Chaparro, G.
author_facet	O'Farrell, I. Bordet, F. Chaparro, G.
author_sort	O'Farrell, I.
title	Bloom forming cyanobacterial complexes co-occurring in a subtropical large reservoir: Validation of dominant eco-strategies
title_short	Bloom forming cyanobacterial complexes co-occurring in a subtropical large reservoir: Validation of dominant eco-strategies
title_full	Bloom forming cyanobacterial complexes co-occurring in a subtropical large reservoir: Validation of dominant eco-strategies
title_fullStr	Bloom forming cyanobacterial complexes co-occurring in a subtropical large reservoir: Validation of dominant eco-strategies
title_full_unstemmed	Bloom forming cyanobacterial complexes co-occurring in a subtropical large reservoir: Validation of dominant eco-strategies
title_sort	bloom forming cyanobacterial complexes co-occurring in a subtropical large reservoir: validation of dominant eco-strategies
url	http://hdl.handle.net/20.500.12110/paper_00188158_v698_n1_p175_OFarrell
work_keys_str_mv	AT ofarrelli bloomformingcyanobacterialcomplexescooccurringinasubtropicallargereservoirvalidationofdominantecostrategies AT bordetf bloomformingcyanobacterialcomplexescooccurringinasubtropicallargereservoirvalidationofdominantecostrategies AT chaparrog bloomformingcyanobacterialcomplexescooccurringinasubtropicallargereservoirvalidationofdominantecostrategies
_version_	1807319979452792832

Bloom forming cyanobacterial complexes co-occurring in a subtropical large reservoir: Validation of dominant eco-strategies

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