Hydrology-driven seasonal changes in the phytoplankton of a subtropical river (Riacho Formosa, Argentina).

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The Riacho Formosa is one of many autochtonous watercourses running along the subtropical region of the Wet Chaco Plains and draining into Paraguay River. Their typical hydrological cycle is characterized by a late winter low phase and a high phase throughout the warm season. As part of a baseline c...

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Autores principales: Mataloni, Gabriela, Burdman, Luciana, Casa, Valeria, Gonzalez, Daniela, Masetti, María Clara
Formato: Artículo revista
Lenguaje:Inglés
Publicado: Sociedad Argentina de Botánica 2018
Materias:
Ecología del fitoplancton
Formosa
ríos subtropicales
estacionalidad hídrica.
Phytoplankton ecology
subtropical rivers
hydrological seasonality
Acceso en línea:https://revistas.unc.edu.ar/index.php/BSAB/article/view/20575
Aporte de:
Revistas de la UNC de Universidad Nacional de Córdoba
id I10-R10-article-20575
record_format ojs
spelling I10-R10-article-205752019-12-14T13:46:35Z Hydrology-driven seasonal changes in the phytoplankton of a subtropical river (Riacho Formosa, Argentina). Cambios estacionales dependientes de la hidrología en el fitoplancton de un río subtropical (Riacho Formosa, Argentina). Mataloni, Gabriela Burdman, Luciana Casa, Valeria Gonzalez, Daniela Masetti, María Clara Ecología del fitoplancton Formosa ríos subtropicales estacionalidad hídrica. Phytoplankton ecology Formosa subtropical rivers hydrological seasonality The Riacho Formosa is one of many autochtonous watercourses running along the subtropical region of the Wet Chaco Plains and draining into Paraguay River. Their typical hydrological cycle is characterized by a late winter low phase and a high phase throughout the warm season. As part of a baseline characterization, the composition and structure of the phytoplankton were studied in relation to river depth, water temperature, pH, conductivity and transparency through 4 seasonal samplings between June 2015 and March 2016. A rich phytoplankton community (338 taxa) was revealed in this study. A few species of Cryptophyceae and Euglenophyceae dominated the community, especially during low waters. A cluster analysis showed that community compositions were more dissimilar over time than along the watercourse, and were spatially more homogeneous during high waters. A canonical correspondence analysis showed that environmental features significantly explained 42.6% of the total variance of species data (p= 0.004). We conclude that phytoplankton responds to hydrological changes through a high species turnover, with dominance peaks of euryhaline, shadow adapted and organic matter exploiting taxa during low waters. Cambios estacionales dependientes de la hidrología en el fitoplancton de un río subtropical (Riacho Formosa, Argentina). El Riacho Formosa es uno de los numerosos cursos de agua que surcan el Chaco Húmedo y desembocan en el río Paraguay. El ciclo hidrológico típico de estos ríos se caracteriza por un estiaje al final del invierno y una creciente durante la época cálida. En una caracterización de línea de base se estudiaron la composición y estructura del fitoplancton en relación con la profundidad, temperatura del agua, pH, conductividad y transparencia mediante 4 muestreos estacionales, entre junio de 2015 y marzo de 2016. La comunidad del fitoplancton fue rica (338 taxa) y dominada por pocas especies de Cryptophyceae y Euglenophyceae, especialmente en aguas bajas. Un análisis de agrupamiento reveló una mayor variación temporal en la composición taxonómica que a lo largo del río, y una mayor homogeneidad espacial durante la fase de inundación. Según un análisis de correspondencia canónica, las variables ambientales explicaron el 42,6% de la varianza total (p= 0,004). Concluimos que el fitoplancton responde a los cambios hidrológicos a través de una alta tasa de recambio de especies, con dominancia de taxones eurihalinos, adaptados a la sombra y consumidores de materia orgánica durante el estiaje. Sociedad Argentina de Botánica 2018-07-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo original application/pdf https://revistas.unc.edu.ar/index.php/BSAB/article/view/20575 Boletín de la Sociedad Argentina de Botánica (Journal of the Argentine Botanical Society; Vol. 53 No. 2 (2018): June; 183-193 Boletín de la Sociedad Argentina de Botánica; Vol. 53 Núm. 2 (2018): Junio; 183-193 Boletín de la Sociedad Argentina de Botánica; v. 53 n. 2 (2018): Junio; 183-193 1851-2372 0373-580X 10.31055/1851.2372.v53.n2 eng https://revistas.unc.edu.ar/index.php/BSAB/article/view/20575/20247 Derechos de autor 2018 Boletín de la Sociedad Argentina de Botánica
institution Universidad Nacional de Córdoba
institution_str I-10
repository_str R-10
container_title_str Revistas de la UNC
language Inglés
format Artículo revista
topic Ecología del fitoplancton
Formosa
ríos subtropicales
estacionalidad hídrica.
Phytoplankton ecology
Formosa
subtropical rivers
hydrological seasonality
spellingShingle Ecología del fitoplancton
Formosa
ríos subtropicales
estacionalidad hídrica.
Phytoplankton ecology
Formosa
subtropical rivers
hydrological seasonality
Mataloni, Gabriela
Burdman, Luciana
Casa, Valeria
Gonzalez, Daniela
Masetti, María Clara
Hydrology-driven seasonal changes in the phytoplankton of a subtropical river (Riacho Formosa, Argentina).
topic_facet Ecología del fitoplancton
Formosa
ríos subtropicales
estacionalidad hídrica.
Phytoplankton ecology
Formosa
subtropical rivers
hydrological seasonality
author Mataloni, Gabriela
Burdman, Luciana
Casa, Valeria
Gonzalez, Daniela
Masetti, María Clara
author_facet Mataloni, Gabriela
Burdman, Luciana
Casa, Valeria
Gonzalez, Daniela
Masetti, María Clara
author_sort Mataloni, Gabriela
title Hydrology-driven seasonal changes in the phytoplankton of a subtropical river (Riacho Formosa, Argentina).
title_short Hydrology-driven seasonal changes in the phytoplankton of a subtropical river (Riacho Formosa, Argentina).
title_full Hydrology-driven seasonal changes in the phytoplankton of a subtropical river (Riacho Formosa, Argentina).
title_fullStr Hydrology-driven seasonal changes in the phytoplankton of a subtropical river (Riacho Formosa, Argentina).
title_full_unstemmed Hydrology-driven seasonal changes in the phytoplankton of a subtropical river (Riacho Formosa, Argentina).
title_sort hydrology-driven seasonal changes in the phytoplankton of a subtropical river (riacho formosa, argentina).
description The Riacho Formosa is one of many autochtonous watercourses running along the subtropical region of the Wet Chaco Plains and draining into Paraguay River. Their typical hydrological cycle is characterized by a late winter low phase and a high phase throughout the warm season. As part of a baseline characterization, the composition and structure of the phytoplankton were studied in relation to river depth, water temperature, pH, conductivity and transparency through 4 seasonal samplings between June 2015 and March 2016. A rich phytoplankton community (338 taxa) was revealed in this study. A few species of Cryptophyceae and Euglenophyceae dominated the community, especially during low waters. A cluster analysis showed that community compositions were more dissimilar over time than along the watercourse, and were spatially more homogeneous during high waters. A canonical correspondence analysis showed that environmental features significantly explained 42.6% of the total variance of species data (p= 0.004). We conclude that phytoplankton responds to hydrological changes through a high species turnover, with dominance peaks of euryhaline, shadow adapted and organic matter exploiting taxa during low waters.
publisher Sociedad Argentina de Botánica
publishDate 2018
url https://revistas.unc.edu.ar/index.php/BSAB/article/view/20575
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first_indexed 2022-08-20T01:21:00Z
last_indexed 2022-08-20T01:21:00Z
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