Long-term study of bloom-forming cyanobacteria in a highly fluctuating vegetated floodplain lake: a morpho-functional approach

This study portrays the frequency and intensity of bloom-forming cyanobacteria in relation to highly changing environmental conditions in a floodplain lake from the Chaco-Pampean region and identifies the factors promoting the growth of different species along a 15-year period marked by important dr...

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Guardado en:
Detalles Bibliográficos
Publicado: 2015
Materias:
Blooms
Cyanobacteria
Floodplain shallow lake
Morpho-functional traits
Pampean plain
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v752_n1_p91_OFarrell
http://hdl.handle.net/20.500.12110/paper_00188158_v752_n1_p91_OFarrell
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00188158_v752_n1_p91_OFarrell
record_format dspace
spelling paper:paper_00188158_v752_n1_p91_OFarrell2023-06-08T14:39:59Z Long-term study of bloom-forming cyanobacteria in a highly fluctuating vegetated floodplain lake: a morpho-functional approach Blooms Cyanobacteria Floodplain shallow lake Morpho-functional traits Pampean plain This study portrays the frequency and intensity of bloom-forming cyanobacteria in relation to highly changing environmental conditions in a floodplain lake from the Chaco-Pampean region and identifies the factors promoting the growth of different species along a 15-year period marked by important drought and flood periods. Phytoplankton in Laguna Grande was increasingly dominated by cyanobacteria represented by eight bloom-forming species bearing different eco-physiological traits. The bloom development showed strong inter-annual variability in correspondence with the depth of the lake that was affected by local rainfall and the ENSO regional phenomenon. The water level of the lake strongly influenced the species composition, favoring non-heterocystous filaments in deep turbid waters and nitrogen fixing in very short well lit, nitrogen-depleted water columns. Species morphology, dimensions and occurrence of akinetes in the filaments also varied in relation to water level. We suggest that the akinete pool of the sediments played a key role on the occurrence of recurrent Anabaenopsis cf. elenkinii and Sphaerospermopsis cf. aphanizonemoides blooms. © 2014, Springer International Publishing Switzerland. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v752_n1_p91_OFarrell http://hdl.handle.net/20.500.12110/paper_00188158_v752_n1_p91_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
Floodplain shallow lake
Morpho-functional traits
Pampean plain
spellingShingle Blooms
Cyanobacteria
Floodplain shallow lake
Morpho-functional traits
Pampean plain
Long-term study of bloom-forming cyanobacteria in a highly fluctuating vegetated floodplain lake: a morpho-functional approach
topic_facet Blooms
Cyanobacteria
Floodplain shallow lake
Morpho-functional traits
Pampean plain
description This study portrays the frequency and intensity of bloom-forming cyanobacteria in relation to highly changing environmental conditions in a floodplain lake from the Chaco-Pampean region and identifies the factors promoting the growth of different species along a 15-year period marked by important drought and flood periods. Phytoplankton in Laguna Grande was increasingly dominated by cyanobacteria represented by eight bloom-forming species bearing different eco-physiological traits. The bloom development showed strong inter-annual variability in correspondence with the depth of the lake that was affected by local rainfall and the ENSO regional phenomenon. The water level of the lake strongly influenced the species composition, favoring non-heterocystous filaments in deep turbid waters and nitrogen fixing in very short well lit, nitrogen-depleted water columns. Species morphology, dimensions and occurrence of akinetes in the filaments also varied in relation to water level. We suggest that the akinete pool of the sediments played a key role on the occurrence of recurrent Anabaenopsis cf. elenkinii and Sphaerospermopsis cf. aphanizonemoides blooms. © 2014, Springer International Publishing Switzerland.
title Long-term study of bloom-forming cyanobacteria in a highly fluctuating vegetated floodplain lake: a morpho-functional approach
title_short Long-term study of bloom-forming cyanobacteria in a highly fluctuating vegetated floodplain lake: a morpho-functional approach
title_full Long-term study of bloom-forming cyanobacteria in a highly fluctuating vegetated floodplain lake: a morpho-functional approach
title_fullStr Long-term study of bloom-forming cyanobacteria in a highly fluctuating vegetated floodplain lake: a morpho-functional approach
title_full_unstemmed Long-term study of bloom-forming cyanobacteria in a highly fluctuating vegetated floodplain lake: a morpho-functional approach
title_sort long-term study of bloom-forming cyanobacteria in a highly fluctuating vegetated floodplain lake: a morpho-functional approach
publishDate 2015
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v752_n1_p91_OFarrell
http://hdl.handle.net/20.500.12110/paper_00188158_v752_n1_p91_OFarrell
_version_ 1768544806456262656

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