Ascidians (Tunicata, Ascidiacea) of Potter Cove, South Shetland Islands, Antarctica

Certain physical factors, substrate type and ice action appear to be important determinants for ascidian distribution. Three different substrate types were sampled at depths between 0-30 m by SCUBA diving: soft bottoms, hard bottoms and moraine deposits. The species found were Aplidium radiatum, Syn...

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Autor principal:	Esnal, Graciela Beatriz
Publicado:	1998
Materias:	Antarctica Ascidiacea Distribution Diversity Ice action Substrate types community composition environmental factor ice spatial distribution substrate Antarctica, South Shetland Islands, Potter Cove Aplidium radiatum Ascidia challengeri Cnemidocarpa verrucosa Corella eumyota Dicarpa insinuosa Distaplia cylindrica Molgula enodis Molgula pedunculata Pyura bouvetensis Pyura discoveryi Pyura obesa Pyura setosa Styela wandeli Sycozoa gaimardi Sycozoa sigillinoides Synoicum adareanum Tylobranchion speciosum
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09541020_v10_n2_p147_Tatian http://hdl.handle.net/20.500.12110/paper_09541020_v10_n2_p147_Tatian
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_09541020_v10_n2_p147_Tatian
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spelling	paper:paper_09541020_v10_n2_p147_Tatian2023-06-08T15:55:42Z Ascidians (Tunicata, Ascidiacea) of Potter Cove, South Shetland Islands, Antarctica Esnal, Graciela Beatriz Antarctica Ascidiacea Distribution Diversity Ice action Substrate types community composition environmental factor ice spatial distribution substrate Antarctica, South Shetland Islands, Potter Cove Aplidium radiatum Ascidia challengeri Ascidiacea Cnemidocarpa verrucosa Corella eumyota Dicarpa insinuosa Distaplia cylindrica Molgula enodis Molgula pedunculata Pyura bouvetensis Pyura discoveryi Pyura obesa Pyura setosa Styela wandeli Sycozoa gaimardi Sycozoa sigillinoides Synoicum adareanum Tylobranchion speciosum Certain physical factors, substrate type and ice action appear to be important determinants for ascidian distribution. Three different substrate types were sampled at depths between 0-30 m by SCUBA diving: soft bottoms, hard bottoms and moraine deposits. The species found were Aplidium radiatum, Synoicum adareanum, Distaplia cylindrica, Sycozoa gaimardi, Sycozoa sigillinoides, Tylobranchion speciosum, Corella eumyota, Ascidia challengeri, Cnemidocarpa verrucosa, Styela wandeli, Dicarpa insinuosa, Pyura bouvetensis, Pyura discoveryi, Pyura obesa, Pyura setosa, Molgula enodis and Molgula pedunculata. Highest diversity and patchy distribution was found in less stringent environments, where epibiosis is a common phenomenon on stolidobranch ascidians. Differences in stalk development were found in the most abundant species Molgula pedunculata and Cnemidocarpa verrucosa. Ice action may be the main factor that determines the absence of ascidians above 15 m in all the stations sampled. Fil:Esnal, G.B. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1998 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09541020_v10_n2_p147_Tatian http://hdl.handle.net/20.500.12110/paper_09541020_v10_n2_p147_Tatian
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Antarctica Ascidiacea Distribution Diversity Ice action Substrate types community composition environmental factor ice spatial distribution substrate Antarctica, South Shetland Islands, Potter Cove Aplidium radiatum Ascidia challengeri Ascidiacea Cnemidocarpa verrucosa Corella eumyota Dicarpa insinuosa Distaplia cylindrica Molgula enodis Molgula pedunculata Pyura bouvetensis Pyura discoveryi Pyura obesa Pyura setosa Styela wandeli Sycozoa gaimardi Sycozoa sigillinoides Synoicum adareanum Tylobranchion speciosum
spellingShingle	Antarctica Ascidiacea Distribution Diversity Ice action Substrate types community composition environmental factor ice spatial distribution substrate Antarctica, South Shetland Islands, Potter Cove Aplidium radiatum Ascidia challengeri Ascidiacea Cnemidocarpa verrucosa Corella eumyota Dicarpa insinuosa Distaplia cylindrica Molgula enodis Molgula pedunculata Pyura bouvetensis Pyura discoveryi Pyura obesa Pyura setosa Styela wandeli Sycozoa gaimardi Sycozoa sigillinoides Synoicum adareanum Tylobranchion speciosum Esnal, Graciela Beatriz Ascidians (Tunicata, Ascidiacea) of Potter Cove, South Shetland Islands, Antarctica
topic_facet	Antarctica Ascidiacea Distribution Diversity Ice action Substrate types community composition environmental factor ice spatial distribution substrate Antarctica, South Shetland Islands, Potter Cove Aplidium radiatum Ascidia challengeri Ascidiacea Cnemidocarpa verrucosa Corella eumyota Dicarpa insinuosa Distaplia cylindrica Molgula enodis Molgula pedunculata Pyura bouvetensis Pyura discoveryi Pyura obesa Pyura setosa Styela wandeli Sycozoa gaimardi Sycozoa sigillinoides Synoicum adareanum Tylobranchion speciosum
description	Certain physical factors, substrate type and ice action appear to be important determinants for ascidian distribution. Three different substrate types were sampled at depths between 0-30 m by SCUBA diving: soft bottoms, hard bottoms and moraine deposits. The species found were Aplidium radiatum, Synoicum adareanum, Distaplia cylindrica, Sycozoa gaimardi, Sycozoa sigillinoides, Tylobranchion speciosum, Corella eumyota, Ascidia challengeri, Cnemidocarpa verrucosa, Styela wandeli, Dicarpa insinuosa, Pyura bouvetensis, Pyura discoveryi, Pyura obesa, Pyura setosa, Molgula enodis and Molgula pedunculata. Highest diversity and patchy distribution was found in less stringent environments, where epibiosis is a common phenomenon on stolidobranch ascidians. Differences in stalk development were found in the most abundant species Molgula pedunculata and Cnemidocarpa verrucosa. Ice action may be the main factor that determines the absence of ascidians above 15 m in all the stations sampled.
author	Esnal, Graciela Beatriz
author_facet	Esnal, Graciela Beatriz
author_sort	Esnal, Graciela Beatriz
title	Ascidians (Tunicata, Ascidiacea) of Potter Cove, South Shetland Islands, Antarctica
title_short	Ascidians (Tunicata, Ascidiacea) of Potter Cove, South Shetland Islands, Antarctica
title_full	Ascidians (Tunicata, Ascidiacea) of Potter Cove, South Shetland Islands, Antarctica
title_fullStr	Ascidians (Tunicata, Ascidiacea) of Potter Cove, South Shetland Islands, Antarctica
title_full_unstemmed	Ascidians (Tunicata, Ascidiacea) of Potter Cove, South Shetland Islands, Antarctica
title_sort	ascidians (tunicata, ascidiacea) of potter cove, south shetland islands, antarctica
publishDate	1998
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09541020_v10_n2_p147_Tatian http://hdl.handle.net/20.500.12110/paper_09541020_v10_n2_p147_Tatian
work_keys_str_mv	AT esnalgracielabeatriz ascidianstunicataascidiaceaofpottercovesouthshetlandislandsantarctica
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Ascidians (Tunicata, Ascidiacea) of Potter Cove, South Shetland Islands, Antarctica

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