The plankton communities from peat bog pools: structure, temporal variation and environmental factors

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This is the first characterization of the structure and temporal variation of the plankton communities comprising the complete food web in five peat bog pools related to environmental factors over two consecutive ice-free periods in Tierra del Fuego (548S). Remarkably, picophytoplankton was composed...

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Autores principales: Quiroga, María Victoria, Unrein, Fernando, González Garraza, Gabriela, Küppers, Gabriela Cristina, Lombardo, Rubén, Marinone, María Cristina, Menu Marque, Silvina, Vinocur, Alicia, Mataloni, Gabriela
Formato: Articulo
Lenguaje:Inglés
Publicado: 2013
Materias:
Ciencias Naturales
peat bogs
food web
pools
plankton
Tierra del Fuego
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/85452
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-85452
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
peat bogs
food web
pools
plankton
Tierra del Fuego
spellingShingle Ciencias Naturales
peat bogs
food web
pools
plankton
Tierra del Fuego
Quiroga, María Victoria
Unrein, Fernando
González Garraza, Gabriela
Küppers, Gabriela Cristina
Lombardo, Rubén
Marinone, María Cristina
Menu Marque, Silvina
Vinocur, Alicia
Mataloni, Gabriela
The plankton communities from peat bog pools: structure, temporal variation and environmental factors
topic_facet Ciencias Naturales
peat bogs
food web
pools
plankton
Tierra del Fuego
description This is the first characterization of the structure and temporal variation of the plankton communities comprising the complete food web in five peat bog pools related to environmental factors over two consecutive ice-free periods in Tierra del Fuego (548S). Remarkably, picophytoplankton was composed solely of eukaryotic cells, surpassing the dominance expectations for these acidic water bodies, whereas testaceans were virtually absent, even as tychoplankters. Abundances of the different planktonic communities were slightly higher than those reported for Northern Hemisphere peat bogs and humic lakes. Mixotrophic nutrition prevailed among nano- and microphytoplankters, a strategy also common in humic lakes. The structures in spring of the planktonic communities were similar. In contrast, in late summer there were differences in the abundance and biomass of the different trophic compartments among small, shallow water bodies and large ones. These seem to be dictated by distinct pool size-driven patterns of water temperature variation. A general shift in the control of heterotrophic flagellates abundance in the pools occurred, changing from bottom-up regulation in spring to top-down control in late summer related to temperature-dependant variations in zooplankton abundance and composition. We hypothesize that changes in the trophic interactions affecting the entire food web occur over the open water period in these aquatic ecosystems, and that these are dictated by pool morphometry and related abiotic features.
format Articulo
Articulo
author Quiroga, María Victoria
Unrein, Fernando
González Garraza, Gabriela
Küppers, Gabriela Cristina
Lombardo, Rubén
Marinone, María Cristina
Menu Marque, Silvina
Vinocur, Alicia
Mataloni, Gabriela
author_facet Quiroga, María Victoria
Unrein, Fernando
González Garraza, Gabriela
Küppers, Gabriela Cristina
Lombardo, Rubén
Marinone, María Cristina
Menu Marque, Silvina
Vinocur, Alicia
Mataloni, Gabriela
author_sort Quiroga, María Victoria
title The plankton communities from peat bog pools: structure, temporal variation and environmental factors
title_short The plankton communities from peat bog pools: structure, temporal variation and environmental factors
title_full The plankton communities from peat bog pools: structure, temporal variation and environmental factors
title_fullStr The plankton communities from peat bog pools: structure, temporal variation and environmental factors
title_full_unstemmed The plankton communities from peat bog pools: structure, temporal variation and environmental factors
title_sort plankton communities from peat bog pools: structure, temporal variation and environmental factors
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/85452
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bdutipo_str Repositorios
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