Stability of diatom composition in a variable lake environment: Lake Chascomús, Argentina

Water and surficial sediment samples of Lake Chascomús and its tributaries were analyzed in order to relate changes in diatom community structure to chemical variables. Over the course of 13 months of sampling, the lake exhibited major changes in water level (1.15-1.98m average depth), total dissolv...

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Autores principales:	Miretzky, P., Maidana, N.I., Fernández Cirelli, A.
Formato:	JOUR
Materias:	Chascomús Diatoms Hydrochemical composition Pampa lake Plankton community composition community structure diatom lacustrine deposit lake ecosystem Argentina algae Bacillariophyta Fragilaria Staurosira construens Synedra Synedra berolinensis
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_14398621_v3_n2_p77_Miretzky
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_14398621_v3_n2_p77_Miretzky
record_format	dspace
spelling	todo:paper_14398621_v3_n2_p77_Miretzky2023-10-03T16:16:21Z Stability of diatom composition in a variable lake environment: Lake Chascomús, Argentina Miretzky, P. Maidana, N.I. Fernández Cirelli, A. Chascomús Diatoms Hydrochemical composition Pampa lake Plankton community composition community structure diatom lacustrine deposit lake ecosystem Argentina algae Bacillariophyta Fragilaria Staurosira construens Synedra Synedra berolinensis Water and surficial sediment samples of Lake Chascomús and its tributaries were analyzed in order to relate changes in diatom community structure to chemical variables. Over the course of 13 months of sampling, the lake exhibited major changes in water level (1.15-1.98m average depth), total dissolved solids (821-1972 mg1-1), silica (0.098-8.22 mg1-1), and total algal biomass (21.4-145.9 μg Ch1 a 1-1). However, despite these large fluctuations, the diatom species composition was relatively stable. The dominant species in the water column was always Synedra berolinensis (68.9%-90.1% total frustules), with Fragilaria construens and F. brevistriata as subdominants. In the sediments the latter two species dominated the frustule counts. These results indicate an unusual floristic stability of this eutrophic ecosystem, with persistent dominance by broadly tolerant, generalist species. Fil:Miretzky, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Maidana, N.I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Fernández Cirelli, A. 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_14398621_v3_n2_p77_Miretzky
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Chascomús Diatoms Hydrochemical composition Pampa lake Plankton community composition community structure diatom lacustrine deposit lake ecosystem Argentina algae Bacillariophyta Fragilaria Staurosira construens Synedra Synedra berolinensis
spellingShingle	Chascomús Diatoms Hydrochemical composition Pampa lake Plankton community composition community structure diatom lacustrine deposit lake ecosystem Argentina algae Bacillariophyta Fragilaria Staurosira construens Synedra Synedra berolinensis Miretzky, P. Maidana, N.I. Fernández Cirelli, A. Stability of diatom composition in a variable lake environment: Lake Chascomús, Argentina
topic_facet	Chascomús Diatoms Hydrochemical composition Pampa lake Plankton community composition community structure diatom lacustrine deposit lake ecosystem Argentina algae Bacillariophyta Fragilaria Staurosira construens Synedra Synedra berolinensis
description	Water and surficial sediment samples of Lake Chascomús and its tributaries were analyzed in order to relate changes in diatom community structure to chemical variables. Over the course of 13 months of sampling, the lake exhibited major changes in water level (1.15-1.98m average depth), total dissolved solids (821-1972 mg1-1), silica (0.098-8.22 mg1-1), and total algal biomass (21.4-145.9 μg Ch1 a 1-1). However, despite these large fluctuations, the diatom species composition was relatively stable. The dominant species in the water column was always Synedra berolinensis (68.9%-90.1% total frustules), with Fragilaria construens and F. brevistriata as subdominants. In the sediments the latter two species dominated the frustule counts. These results indicate an unusual floristic stability of this eutrophic ecosystem, with persistent dominance by broadly tolerant, generalist species.
format	JOUR
author	Miretzky, P. Maidana, N.I. Fernández Cirelli, A.
author_facet	Miretzky, P. Maidana, N.I. Fernández Cirelli, A.
author_sort	Miretzky, P.
title	Stability of diatom composition in a variable lake environment: Lake Chascomús, Argentina
title_short	Stability of diatom composition in a variable lake environment: Lake Chascomús, Argentina
title_full	Stability of diatom composition in a variable lake environment: Lake Chascomús, Argentina
title_fullStr	Stability of diatom composition in a variable lake environment: Lake Chascomús, Argentina
title_full_unstemmed	Stability of diatom composition in a variable lake environment: Lake Chascomús, Argentina
title_sort	stability of diatom composition in a variable lake environment: lake chascomús, argentina
url	http://hdl.handle.net/20.500.12110/paper_14398621_v3_n2_p77_Miretzky
work_keys_str_mv	AT miretzkyp stabilityofdiatomcompositioninavariablelakeenvironmentlakechascomusargentina AT maidanani stabilityofdiatomcompositioninavariablelakeenvironmentlakechascomusargentina AT fernandezcirellia stabilityofdiatomcompositioninavariablelakeenvironmentlakechascomusargentina
_version_	1807319599766568960

Stability of diatom composition in a variable lake environment: Lake Chascomús, Argentina

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