Picoplankton abundance and cytometric group diversity along a trophic and latitudinal lake gradient

The picoplankton (PP) is responsible for major ecosystem functions in most aquatic environments. However, not much is known about the factors that regulate its total abundance and community structure. Using flow cytometry (FC) to detect particles based on their pigments and nucleic-acid content, we...

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Detalles Bibliográficos
Autores principales: Schiaffino, Maria Romina, Izaguirre, Irina, Unrein, Fernando
Publicado: 2013
Materias:
Bacteria
Flow cytometry
Latitudinal gradient
Patagonian water bodies
Picocyanobacteria
Picoeukaryotes
Picoplankton
Bacteria (microorganisms)
Gonia
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09483055_v68_n3_p231_Schiaffino
http://hdl.handle.net/20.500.12110/paper_09483055_v68_n3_p231_Schiaffino
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_09483055_v68_n3_p231_Schiaffino
record_format dspace
spelling paper:paper_09483055_v68_n3_p231_Schiaffino2023-06-08T15:54:03Z Picoplankton abundance and cytometric group diversity along a trophic and latitudinal lake gradient Schiaffino, Maria Romina Izaguirre, Irina Unrein, Fernando Bacteria Flow cytometry Latitudinal gradient Patagonian water bodies Picocyanobacteria Picoeukaryotes Picoplankton Bacteria (microorganisms) Gonia The picoplankton (PP) is responsible for major ecosystem functions in most aquatic environments. However, not much is known about the factors that regulate its total abundance and community structure. Using flow cytometry (FC) to detect particles based on their pigments and nucleic-acid content, we described and quantified the photosynthetic pico plankton (PPP) and the heterotrophic bacterioplankton (HB) populations (or groups) composing PP in 32 water bodies located along a trophic and latitudinal gradient in the Argentinean Pata gonia to determine flowcytometrically defined community structures. We set out to identify the environmental variables regulating total PP abundance, group structure and cytometric diversity. We identified a total of 28 different cytometric populations within the HB, 14 of phycoerythrin (PE)-rich picocyanobacteria (Pcy), 8 of phycocyanin (PC)-rich Pcy, and 41 of picoeukaryotes (Peuk) in the different water bodies, with average 3.9 HB and 4.6 PPP groups per water body. We found a strong influence of environmental factors and a less marked effect of latitude on PP structure. HB and PPP abundances decreased towards higher latitudes but their cytometric diversity did not, whereas HB, PCrich Pcy and Peuk abundances together with PPP diversities increased with higher values of chlorophyll a (chl a). The relative contribution of PE-rich Pcy to total Pcy decreased with chl a, whereas the relative contribution of PC-rich Pcy and the number of PC-rich cytometric populations increased with chl a values. Peuk prevailed over Pcy with increasing trophic status and light attenuation, whereas HB prevailed over PPP with increasing trophic status. Copyright © Inter-Research 2013. Fil:Schiaffino, M.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Izaguirre, I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Unrein, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09483055_v68_n3_p231_Schiaffino http://hdl.handle.net/20.500.12110/paper_09483055_v68_n3_p231_Schiaffino
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Bacteria
Flow cytometry
Latitudinal gradient
Patagonian water bodies
Picocyanobacteria
Picoeukaryotes
Picoplankton
Bacteria (microorganisms)
Gonia
spellingShingle Bacteria
Flow cytometry
Latitudinal gradient
Patagonian water bodies
Picocyanobacteria
Picoeukaryotes
Picoplankton
Bacteria (microorganisms)
Gonia
Schiaffino, Maria Romina
Izaguirre, Irina
Unrein, Fernando
Picoplankton abundance and cytometric group diversity along a trophic and latitudinal lake gradient
topic_facet Bacteria
Flow cytometry
Latitudinal gradient
Patagonian water bodies
Picocyanobacteria
Picoeukaryotes
Picoplankton
Bacteria (microorganisms)
Gonia
description The picoplankton (PP) is responsible for major ecosystem functions in most aquatic environments. However, not much is known about the factors that regulate its total abundance and community structure. Using flow cytometry (FC) to detect particles based on their pigments and nucleic-acid content, we described and quantified the photosynthetic pico plankton (PPP) and the heterotrophic bacterioplankton (HB) populations (or groups) composing PP in 32 water bodies located along a trophic and latitudinal gradient in the Argentinean Pata gonia to determine flowcytometrically defined community structures. We set out to identify the environmental variables regulating total PP abundance, group structure and cytometric diversity. We identified a total of 28 different cytometric populations within the HB, 14 of phycoerythrin (PE)-rich picocyanobacteria (Pcy), 8 of phycocyanin (PC)-rich Pcy, and 41 of picoeukaryotes (Peuk) in the different water bodies, with average 3.9 HB and 4.6 PPP groups per water body. We found a strong influence of environmental factors and a less marked effect of latitude on PP structure. HB and PPP abundances decreased towards higher latitudes but their cytometric diversity did not, whereas HB, PCrich Pcy and Peuk abundances together with PPP diversities increased with higher values of chlorophyll a (chl a). The relative contribution of PE-rich Pcy to total Pcy decreased with chl a, whereas the relative contribution of PC-rich Pcy and the number of PC-rich cytometric populations increased with chl a values. Peuk prevailed over Pcy with increasing trophic status and light attenuation, whereas HB prevailed over PPP with increasing trophic status. Copyright © Inter-Research 2013.
author Schiaffino, Maria Romina
Izaguirre, Irina
Unrein, Fernando
author_facet Schiaffino, Maria Romina
Izaguirre, Irina
Unrein, Fernando
author_sort Schiaffino, Maria Romina
title Picoplankton abundance and cytometric group diversity along a trophic and latitudinal lake gradient
title_short Picoplankton abundance and cytometric group diversity along a trophic and latitudinal lake gradient
title_full Picoplankton abundance and cytometric group diversity along a trophic and latitudinal lake gradient
title_fullStr Picoplankton abundance and cytometric group diversity along a trophic and latitudinal lake gradient
title_full_unstemmed Picoplankton abundance and cytometric group diversity along a trophic and latitudinal lake gradient
title_sort picoplankton abundance and cytometric group diversity along a trophic and latitudinal lake gradient
publishDate 2013
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09483055_v68_n3_p231_Schiaffino
http://hdl.handle.net/20.500.12110/paper_09483055_v68_n3_p231_Schiaffino
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AT izaguirreirina picoplanktonabundanceandcytometricgroupdiversityalongatrophicandlatitudinallakegradient
AT unreinfernando picoplanktonabundanceandcytometricgroupdiversityalongatrophicandlatitudinallakegradient
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