Typology of lentic water bodies at Potter Peninsula (King George Island, Antarctica) based on physical-chemical characteristics and phytoplankton communities

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During austral summer 1995/1996, 26 ultraoligotrophic to hypereutrophic ponds and lakes on Potter Peninsula (King George Island, Antarctica) were characterized on the basis of abiotic factors and the phytoplankton community. The influence of vegetation and animal presence in the catchment, morphomet...

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Autores principales: Vinocur, A., Unrein, F.
Formato: JOUR
Materias:
classification
environmental factor
lentic environment
physicochemical property
phytoplankton
Antarctica
King George Island
South Shetland Islands
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_07224060_v23_n12_p858_Vinocur
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_07224060_v23_n12_p858_Vinocur2023-10-03T15:36:56Z Typology of lentic water bodies at Potter Peninsula (King George Island, Antarctica) based on physical-chemical characteristics and phytoplankton communities Vinocur, A. Unrein, F. classification environmental factor lentic environment physicochemical property phytoplankton Antarctica King George Island South Shetland Islands During austral summer 1995/1996, 26 ultraoligotrophic to hypereutrophic ponds and lakes on Potter Peninsula (King George Island, Antarctica) were characterized on the basis of abiotic factors and the phytoplankton community. The influence of vegetation and animal presence in the catchment, morphometric variables of the water bodies and their proximity to the sea on composition and abundance of phytoplankton was also considered. Results of a Principal Component Analysis show that the characteristics of each catchment strongly influenced the abiotic parameter accounting for the obtained lake and pond ordination. In particular, five groups of water bodies were clearly defined primarily based on nutrients and suspended solid concentrations, and to a lesser extent on pH and conductivity. These groups could be classified into two assemblages distributed along a phytoplankton biomass gradient, which is regulated by the light availability in one case and by nutrient concentrations in the other. Among 140 algal taxa registered, 3 were new records for Antarctica and 18 taxa were new records for Potter Peninsula. Bacillariophyceae was the dominant class in terms of species number and density. Chlorophyta and Cyanobacteria were subdominant. The tychoplanktonic habit was the best represented in almost all lakes. Fil:Vinocur, A. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_07224060_v23_n12_p858_Vinocur
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic classification
environmental factor
lentic environment
physicochemical property
phytoplankton
Antarctica
King George Island
South Shetland Islands
spellingShingle classification
environmental factor
lentic environment
physicochemical property
phytoplankton
Antarctica
King George Island
South Shetland Islands
Vinocur, A.
Unrein, F.
Typology of lentic water bodies at Potter Peninsula (King George Island, Antarctica) based on physical-chemical characteristics and phytoplankton communities
topic_facet classification
environmental factor
lentic environment
physicochemical property
phytoplankton
Antarctica
King George Island
South Shetland Islands
description During austral summer 1995/1996, 26 ultraoligotrophic to hypereutrophic ponds and lakes on Potter Peninsula (King George Island, Antarctica) were characterized on the basis of abiotic factors and the phytoplankton community. The influence of vegetation and animal presence in the catchment, morphometric variables of the water bodies and their proximity to the sea on composition and abundance of phytoplankton was also considered. Results of a Principal Component Analysis show that the characteristics of each catchment strongly influenced the abiotic parameter accounting for the obtained lake and pond ordination. In particular, five groups of water bodies were clearly defined primarily based on nutrients and suspended solid concentrations, and to a lesser extent on pH and conductivity. These groups could be classified into two assemblages distributed along a phytoplankton biomass gradient, which is regulated by the light availability in one case and by nutrient concentrations in the other. Among 140 algal taxa registered, 3 were new records for Antarctica and 18 taxa were new records for Potter Peninsula. Bacillariophyceae was the dominant class in terms of species number and density. Chlorophyta and Cyanobacteria were subdominant. The tychoplanktonic habit was the best represented in almost all lakes.
format JOUR
author Vinocur, A.
Unrein, F.
author_facet Vinocur, A.
Unrein, F.
author_sort Vinocur, A.
title Typology of lentic water bodies at Potter Peninsula (King George Island, Antarctica) based on physical-chemical characteristics and phytoplankton communities
title_short Typology of lentic water bodies at Potter Peninsula (King George Island, Antarctica) based on physical-chemical characteristics and phytoplankton communities
title_full Typology of lentic water bodies at Potter Peninsula (King George Island, Antarctica) based on physical-chemical characteristics and phytoplankton communities
title_fullStr Typology of lentic water bodies at Potter Peninsula (King George Island, Antarctica) based on physical-chemical characteristics and phytoplankton communities
title_full_unstemmed Typology of lentic water bodies at Potter Peninsula (King George Island, Antarctica) based on physical-chemical characteristics and phytoplankton communities
title_sort typology of lentic water bodies at potter peninsula (king george island, antarctica) based on physical-chemical characteristics and phytoplankton communities
url http://hdl.handle.net/20.500.12110/paper_07224060_v23_n12_p858_Vinocur
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AT unreinf typologyoflenticwaterbodiesatpotterpeninsulakinggeorgeislandantarcticabasedonphysicalchemicalcharacteristicsandphytoplanktoncommunities
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