Phytoplankton in Antarctic lakes: biodiversity and main ecological features

Antarctica holds a great number of inland lakes whose characteristics vary from ultra-oligotrophic to hypereutrophic, and from freshwater to hypersaline. The harsh conditions in these ecosystems (extremely low temperatures, large annual variation in solar radiation, light limitation below the ice) a...

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Autores principales: Izaguirre, Irina, Allende, Luz, Schiaffino, M. Romina
Otros Autores: 0000-0001-7360-8103
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: Springer 2022
Materias:
Phytoplankton
Antarctic lakes
Extreme environments
Diversity and ecology
Acceso en línea:https://repositorio.unnoba.edu.ar:8080/xmlui/handle/23601/478
Aporte de:
Re DI Repositorio Digital UNNOBA de Universidad Nacional del Noroeste de la Provincia de Buenos Aires
id I103-R405-23601-478
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spelling I103-R405-23601-4782022-08-08T19:31:24Z Phytoplankton in Antarctic lakes: biodiversity and main ecological features Izaguirre, Irina Allende, Luz Schiaffino, M. Romina 0000-0001-7360-8103 0000-0001-9605-4828 0000-0002-9383-2003 Phytoplankton Antarctic lakes Extreme environments Diversity and ecology Antarctica holds a great number of inland lakes whose characteristics vary from ultra-oligotrophic to hypereutrophic, and from freshwater to hypersaline. The harsh conditions in these ecosystems (extremely low temperatures, large annual variation in solar radiation, light limitation below the ice) account for adaptive strategies of the selected phytoplankton species; some of them are mixotrophy, formation of resistant cysts, starch accumulation, pigment adaptation and motility. Algal richness is comparatively lower than in other parts of the world, although molecular studies are now revealing a biodiversity much higher than that previously based on morphological identifications. Many lakes are permanently stratified, such as perennially ice-covered or saline meromictic, whereas shallow lakes in coastal regions are usually ice-free in summer, accounting for contrasting patterns in their phytoplankton temporal dynamics. Simple and short food webs are characteristicof Antarctic lakes, where phytoplankton fraction > 2 µm is usually dominated by nanoflagellates. In this review, we provide an overview of the current knowledge about phytoplankton of Antarctic lakes, including information on biodiversity (morphologicalbased, functional and molecular), and the main ecological aspects (colonization, endemism, ecological strategies, temporal dynamics, biotic interactions). We compared ecosystems of different trophic status and from Continental and Maritime Antarctica, including own data from manipulative experiments. Fil: Izaguirre, Irina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. IEGEBA; Argentina. Fil: Allende, Luz. Universidad Nacional de General Sarmiento. Instituto del Conurbano. CONICET; Argentina. Fil: Schiaffino, M. Romina. Universidad Nacional del Noroeste de la Provincia de Buenos Aires. Departamento de Ciencias Básicas y Experimentales. Centro de Investigaciones y Transferencia del Noroeste de la Provincia de Buenos Aires (UNNOBA-UNSAdA-CONICET). Laboratorio de Limnología; Argentina. Con referato 2022-08-08T19:31:24Z 2022-08-08T19:31:24Z 2020-05-30 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion Izaguirre, I., Allende, L. & Romina Schiaffino, M. Phytoplankton in Antarctic lakes: biodiversity and main ecological features. Hydrobiologia (2020). https://doi.org/10.1007/s10750-020-04306-x 0018-8158 https://repositorio.unnoba.edu.ar:8080/xmlui/handle/23601/478 eng Agencia Nacional de Promociones Científicas y Técnicas/FONCYT/PICT 32732/CABA/ Análisis biogeográfico de la diversidad del picoplancton y del nanoplancton de lagos en una transecta Patagónico-Antártica. Spanish Project Mixantar/REN2002-11396-E/ANT. DOI 10.1007/s10750-020-04306-x info:eu-repo/semantics/closedAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ application/pdf application/pdf Springer Hydrobiologia
institution Universidad Nacional del Noroeste de la Provincia de Buenos Aires
institution_str I-103
repository_str R-405
collection Re DI Repositorio Digital UNNOBA
language Inglés
topic Phytoplankton
Antarctic lakes
Extreme environments
Diversity and ecology
spellingShingle Phytoplankton
Antarctic lakes
Extreme environments
Diversity and ecology
Izaguirre, Irina
Allende, Luz
Schiaffino, M. Romina
Phytoplankton in Antarctic lakes: biodiversity and main ecological features
topic_facet Phytoplankton
Antarctic lakes
Extreme environments
Diversity and ecology
description Antarctica holds a great number of inland lakes whose characteristics vary from ultra-oligotrophic to hypereutrophic, and from freshwater to hypersaline. The harsh conditions in these ecosystems (extremely low temperatures, large annual variation in solar radiation, light limitation below the ice) account for adaptive strategies of the selected phytoplankton species; some of them are mixotrophy, formation of resistant cysts, starch accumulation, pigment adaptation and motility. Algal richness is comparatively lower than in other parts of the world, although molecular studies are now revealing a biodiversity much higher than that previously based on morphological identifications. Many lakes are permanently stratified, such as perennially ice-covered or saline meromictic, whereas shallow lakes in coastal regions are usually ice-free in summer, accounting for contrasting patterns in their phytoplankton temporal dynamics. Simple and short food webs are characteristicof Antarctic lakes, where phytoplankton fraction > 2 µm is usually dominated by nanoflagellates. In this review, we provide an overview of the current knowledge about phytoplankton of Antarctic lakes, including information on biodiversity (morphologicalbased, functional and molecular), and the main ecological aspects (colonization, endemism, ecological strategies, temporal dynamics, biotic interactions). We compared ecosystems of different trophic status and from Continental and Maritime Antarctica, including own data from manipulative experiments.
author2 0000-0001-7360-8103
author_facet 0000-0001-7360-8103
Izaguirre, Irina
Allende, Luz
Schiaffino, M. Romina
format Artículo
Artículo
publishedVersion
Artículo
Artículo
publishedVersion
Artículo
Artículo
publishedVersion
author Izaguirre, Irina
Allende, Luz
Schiaffino, M. Romina
author_sort Izaguirre, Irina
title Phytoplankton in Antarctic lakes: biodiversity and main ecological features
title_short Phytoplankton in Antarctic lakes: biodiversity and main ecological features
title_full Phytoplankton in Antarctic lakes: biodiversity and main ecological features
title_fullStr Phytoplankton in Antarctic lakes: biodiversity and main ecological features
title_full_unstemmed Phytoplankton in Antarctic lakes: biodiversity and main ecological features
title_sort phytoplankton in antarctic lakes: biodiversity and main ecological features
publisher Springer
publishDate 2022
url https://repositorio.unnoba.edu.ar:8080/xmlui/handle/23601/478
work_keys_str_mv AT izaguirreirina phytoplanktoninantarcticlakesbiodiversityandmainecologicalfeatures
AT allendeluz phytoplanktoninantarcticlakesbiodiversityandmainecologicalfeatures
AT schiaffinomromina phytoplanktoninantarcticlakesbiodiversityandmainecologicalfeatures
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