Latitude-related shell patterns in radiolaria: Botryostrobus auritus/australis morphotypes in the equatorial to antarctic Pacific
Analyses of the size, porosity and shape of 366 specimens of Botryostrobus auritus/australis retrieved from 17 surface sediment samples distributed more or less evenly between the equator and 64° S in the western Pacific Ocean show that most shape-related features vary rather evenly from the tropics...
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ftunibueairesbd:paper:paper_03778398_v13_n4_p309_Boltovskoy 2023-05-15T13:51:25+02:00 Latitude-related shell patterns in radiolaria: Botryostrobus auritus/australis morphotypes in the equatorial to antarctic Pacific Boltovskoy, Demetrio Vrba, Ana Virginia 1989 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03778398_v13_n4_p309_Boltovskoy https://hdl.handle.net/20.500.12110/paper_03778398_v13_n4_p309_Boltovskoy unknown https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03778398_v13_n4_p309_Boltovskoy http://hdl.handle.net/20.500.12110/paper_03778398_v13_n4_p309_Boltovskoy Botryostrobus Auritus/Australis morphotypes latitude dependence Radiolaria shell patterns Pacific 1989 ftunibueairesbd https://doi.org/20.500.12110/paper_03778398_v13_n4_p309_Boltovskoy 2023-02-16T02:11:17Z Analyses of the size, porosity and shape of 366 specimens of Botryostrobus auritus/australis retrieved from 17 surface sediment samples distributed more or less evenly between the equator and 64° S in the western Pacific Ocean show that most shape-related features vary rather evenly from the tropics to the pole, suggesting a close relationship with surface temperature and/or salinity; the size and porosity of the shells, on the other hand, are more closely associated with primary productivity in the upper layers than with latitude. Most changes are smooth and stepwise, although for several characters there is an increase in the average rate of variation in the southernmost tropical to northern subantarctic areas, in coincidence with the zone of the species' maximum relative abundance. It is concluded that the morphologic differences studied are not consistent enough as to justify the division of B. auritus/australis into several distributionally more restricted taxa. On the other hand, the overlap for the ranges of most traits in the various climatic zones transected is of such magnitude that it restricts the potential usefulness of the shape, porosity and size patterns surveyed as ecologic or paleoecologic indicators. © 1989. Fil:Boltovskoy, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Vrba, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Other/Unknown Material Antarc* Antarctic Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires) Antarctic Argentina Pacific |
institution |
Open Polar |
collection |
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires) |
op_collection_id |
ftunibueairesbd |
language |
unknown |
topic |
Botryostrobus Auritus/Australis morphotypes latitude dependence Radiolaria shell patterns Pacific |
spellingShingle |
Botryostrobus Auritus/Australis morphotypes latitude dependence Radiolaria shell patterns Pacific Boltovskoy, Demetrio Vrba, Ana Virginia Latitude-related shell patterns in radiolaria: Botryostrobus auritus/australis morphotypes in the equatorial to antarctic Pacific |
topic_facet |
Botryostrobus Auritus/Australis morphotypes latitude dependence Radiolaria shell patterns Pacific |
description |
Analyses of the size, porosity and shape of 366 specimens of Botryostrobus auritus/australis retrieved from 17 surface sediment samples distributed more or less evenly between the equator and 64° S in the western Pacific Ocean show that most shape-related features vary rather evenly from the tropics to the pole, suggesting a close relationship with surface temperature and/or salinity; the size and porosity of the shells, on the other hand, are more closely associated with primary productivity in the upper layers than with latitude. Most changes are smooth and stepwise, although for several characters there is an increase in the average rate of variation in the southernmost tropical to northern subantarctic areas, in coincidence with the zone of the species' maximum relative abundance. It is concluded that the morphologic differences studied are not consistent enough as to justify the division of B. auritus/australis into several distributionally more restricted taxa. On the other hand, the overlap for the ranges of most traits in the various climatic zones transected is of such magnitude that it restricts the potential usefulness of the shape, porosity and size patterns surveyed as ecologic or paleoecologic indicators. © 1989. Fil:Boltovskoy, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Vrba, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. |
author |
Boltovskoy, Demetrio Vrba, Ana Virginia |
author_facet |
Boltovskoy, Demetrio Vrba, Ana Virginia |
author_sort |
Boltovskoy, Demetrio |
title |
Latitude-related shell patterns in radiolaria: Botryostrobus auritus/australis morphotypes in the equatorial to antarctic Pacific |
title_short |
Latitude-related shell patterns in radiolaria: Botryostrobus auritus/australis morphotypes in the equatorial to antarctic Pacific |
title_full |
Latitude-related shell patterns in radiolaria: Botryostrobus auritus/australis morphotypes in the equatorial to antarctic Pacific |
title_fullStr |
Latitude-related shell patterns in radiolaria: Botryostrobus auritus/australis morphotypes in the equatorial to antarctic Pacific |
title_full_unstemmed |
Latitude-related shell patterns in radiolaria: Botryostrobus auritus/australis morphotypes in the equatorial to antarctic Pacific |
title_sort |
latitude-related shell patterns in radiolaria: botryostrobus auritus/australis morphotypes in the equatorial to antarctic pacific |
publishDate |
1989 |
url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03778398_v13_n4_p309_Boltovskoy https://hdl.handle.net/20.500.12110/paper_03778398_v13_n4_p309_Boltovskoy |
geographic |
Antarctic Argentina Pacific |
geographic_facet |
Antarctic Argentina Pacific |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03778398_v13_n4_p309_Boltovskoy http://hdl.handle.net/20.500.12110/paper_03778398_v13_n4_p309_Boltovskoy |
op_doi |
https://doi.org/20.500.12110/paper_03778398_v13_n4_p309_Boltovskoy |
_version_ |
1766255261103685632 |