Distribution patterns of chaetognata, polychaeta, pteropoda and salpidae off South Georgia and South Orkney Islands

The distribution pattern, frequency and density (ind./1000 m) of different mesozooplankton species from the South Georgia Islands, South Orkney Islands and the Weddell-Scotia Confluence were analyzed using data obtained in 1994. The maximum densities of the species found were: Eukrohnia hamata (5330...

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Autores principales: Crelier, A.M., Dadon, J.R., Isbert-Perlender, H.G., Nahabedian, D.E., Daponte, M.C.
Formato: JOUR
Materias:
Clio sulcata
Clione
Clione limacina
Eukrohnia hamata
Limacina helicina
Limacina retroversa
Pelagobia longicirrata
Polychaeta
Pteropoda
Sagitta gazellae
Salpa thompsoni
Salpidae
Spongiobranchaea australis
Tomopteris
Tomopteris planctonis
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_16798759_v58_n4_p287_Crelier
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_16798759_v58_n4_p287_Crelier2023-10-03T16:29:44Z Distribution patterns of chaetognata, polychaeta, pteropoda and salpidae off South Georgia and South Orkney Islands Crelier, A.M. Dadon, J.R. Isbert-Perlender, H.G. Nahabedian, D.E. Daponte, M.C. Clio sulcata Clione Clione limacina Eukrohnia hamata Limacina helicina Limacina retroversa Pelagobia longicirrata Polychaeta Pteropoda Sagitta gazellae Salpa thompsoni Salpidae Spongiobranchaea australis Tomopteris Tomopteris planctonis The distribution pattern, frequency and density (ind./1000 m) of different mesozooplankton species from the South Georgia Islands, South Orkney Islands and the Weddell-Scotia Confluence were analyzed using data obtained in 1994. The maximum densities of the species found were: Eukrohnia hamata (5330), Sagitta gazellae (1052), Clione limacina antarctica (450), Spongiobranchaea australis (375), Clio sulcata (100), Limacina helicina (4076 x 103), Limacina retroversa (71 x 104), Pelagobia longicirrata (29170), Rhynchonereella bongraini (117), Tomopteris carpenterii (26), Tomopteris planktonis (498), Tomopteris septentrionales (498) and Salpa thompsoni (189). Species density and frequency decreased from South Georgia to the South Orkney Islands, recording intermediate values at the Weddell-Scotia Confluence. Species density in the South Orkney area seemed to be limited by variations in temperature and salinity. The southern area around South Georgia showed the highest density of species, probably due to the influence of the Southern Front of the Antarctic Circumpolar Current. The presence of species characteristic of sub- Antarctic waters such as L. retroversa in the Confluence area could be related to the southward movements of eddies that originate in the Polar Front. Fil:Crelier, A.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Dadon, J.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Nahabedian, D.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Daponte, M.C. 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_16798759_v58_n4_p287_Crelier
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Clio sulcata
Clione
Clione limacina
Eukrohnia hamata
Limacina helicina
Limacina retroversa
Pelagobia longicirrata
Polychaeta
Pteropoda
Sagitta gazellae
Salpa thompsoni
Salpidae
Spongiobranchaea australis
Tomopteris
Tomopteris planctonis
spellingShingle Clio sulcata
Clione
Clione limacina
Eukrohnia hamata
Limacina helicina
Limacina retroversa
Pelagobia longicirrata
Polychaeta
Pteropoda
Sagitta gazellae
Salpa thompsoni
Salpidae
Spongiobranchaea australis
Tomopteris
Tomopteris planctonis
Crelier, A.M.
Dadon, J.R.
Isbert-Perlender, H.G.
Nahabedian, D.E.
Daponte, M.C.
Distribution patterns of chaetognata, polychaeta, pteropoda and salpidae off South Georgia and South Orkney Islands
topic_facet Clio sulcata
Clione
Clione limacina
Eukrohnia hamata
Limacina helicina
Limacina retroversa
Pelagobia longicirrata
Polychaeta
Pteropoda
Sagitta gazellae
Salpa thompsoni
Salpidae
Spongiobranchaea australis
Tomopteris
Tomopteris planctonis
description The distribution pattern, frequency and density (ind./1000 m) of different mesozooplankton species from the South Georgia Islands, South Orkney Islands and the Weddell-Scotia Confluence were analyzed using data obtained in 1994. The maximum densities of the species found were: Eukrohnia hamata (5330), Sagitta gazellae (1052), Clione limacina antarctica (450), Spongiobranchaea australis (375), Clio sulcata (100), Limacina helicina (4076 x 103), Limacina retroversa (71 x 104), Pelagobia longicirrata (29170), Rhynchonereella bongraini (117), Tomopteris carpenterii (26), Tomopteris planktonis (498), Tomopteris septentrionales (498) and Salpa thompsoni (189). Species density and frequency decreased from South Georgia to the South Orkney Islands, recording intermediate values at the Weddell-Scotia Confluence. Species density in the South Orkney area seemed to be limited by variations in temperature and salinity. The southern area around South Georgia showed the highest density of species, probably due to the influence of the Southern Front of the Antarctic Circumpolar Current. The presence of species characteristic of sub- Antarctic waters such as L. retroversa in the Confluence area could be related to the southward movements of eddies that originate in the Polar Front.
format JOUR
author Crelier, A.M.
Dadon, J.R.
Isbert-Perlender, H.G.
Nahabedian, D.E.
Daponte, M.C.
author_facet Crelier, A.M.
Dadon, J.R.
Isbert-Perlender, H.G.
Nahabedian, D.E.
Daponte, M.C.
author_sort Crelier, A.M.
title Distribution patterns of chaetognata, polychaeta, pteropoda and salpidae off South Georgia and South Orkney Islands
title_short Distribution patterns of chaetognata, polychaeta, pteropoda and salpidae off South Georgia and South Orkney Islands
title_full Distribution patterns of chaetognata, polychaeta, pteropoda and salpidae off South Georgia and South Orkney Islands
title_fullStr Distribution patterns of chaetognata, polychaeta, pteropoda and salpidae off South Georgia and South Orkney Islands
title_full_unstemmed Distribution patterns of chaetognata, polychaeta, pteropoda and salpidae off South Georgia and South Orkney Islands
title_sort distribution patterns of chaetognata, polychaeta, pteropoda and salpidae off south georgia and south orkney islands
url http://hdl.handle.net/20.500.12110/paper_16798759_v58_n4_p287_Crelier
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