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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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_09541020_v10_n2_p147_Tatian |
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todo:paper_09541020_v10_n2_p147_Tatian2023-10-03T15:51:35Z Ascidians (Tunicata, Ascidiacea) of Potter Cove, South Shetland Islands, Antarctica Tatian, M. Sahade, R.J. Doucet, M.E. Esnal, G.B. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09541020_v10_n2_p147_Tatian |
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Universidad de Buenos Aires |
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I-28 |
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R-134 |
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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 Tatian, M. Sahade, R.J. Doucet, M.E. Esnal, G.B. 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. |
| format |
JOUR |
| author |
Tatian, M. Sahade, R.J. Doucet, M.E. Esnal, G.B. |
| author_facet |
Tatian, M. Sahade, R.J. Doucet, M.E. Esnal, G.B. |
| author_sort |
Tatian, M. |
| 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 |
| url |
http://hdl.handle.net/20.500.12110/paper_09541020_v10_n2_p147_Tatian |
| work_keys_str_mv |
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