Bloom forming cyanobacterial complexes co-occurring in a subtropical large reservoir: Validation of dominant eco-strategies
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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2012
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v698_n1_p175_OFarrell http://hdl.handle.net/20.500.12110/paper_00188158_v698_n1_p175_OFarrell |
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paper:paper_00188158_v698_n1_p175_OFarrell2023-06-08T14:39:55Z Bloom forming cyanobacterial complexes co-occurring in a subtropical large reservoir: Validation of dominant eco-strategies O'Farrell, Inés Chaparro, Griselda Noemi 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. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v698_n1_p175_OFarrell 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, Inés Chaparro, Griselda Noemi 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. |
| author |
O'Farrell, Inés Chaparro, Griselda Noemi |
| author_facet |
O'Farrell, Inés Chaparro, Griselda Noemi |
| author_sort |
O'Farrell, Inés |
| 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 |
| publishDate |
2012 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v698_n1_p175_OFarrell http://hdl.handle.net/20.500.12110/paper_00188158_v698_n1_p175_OFarrell |
| work_keys_str_mv |
AT ofarrellines bloomformingcyanobacterialcomplexescooccurringinasubtropicallargereservoirvalidationofdominantecostrategies AT chaparrogriseldanoemi bloomformingcyanobacterialcomplexescooccurringinasubtropicallargereservoirvalidationofdominantecostrategies |
| _version_ |
1768544163045834752 |