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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Autores principales:	Boltovskoy, Demetrio, Vrba, Ana Virginia
Publicado:	1989
Materias:	Botryostrobus Auritus/Australis morphotypes latitude dependence Radiolaria shell patterns Pacific
Acceso en línea:	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
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_03778398_v13_n4_p309_Boltovskoy
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spelling	paper:paper_03778398_v13_n4_p309_Boltovskoy2023-06-08T15:39:01Z Latitude-related shell patterns in radiolaria: Botryostrobus auritus/australis morphotypes in the equatorial to antarctic Pacific Boltovskoy, Demetrio Vrba, Ana Virginia Botryostrobus Auritus/Australis morphotypes latitude dependence Radiolaria shell patterns 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 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. 1989 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
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
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.
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 http://hdl.handle.net/20.500.12110/paper_03778398_v13_n4_p309_Boltovskoy
work_keys_str_mv	AT boltovskoydemetrio latituderelatedshellpatternsinradiolariabotryostrobusauritusaustralismorphotypesintheequatorialtoantarcticpacific AT vrbaanavirginia latituderelatedshellpatternsinradiolariabotryostrobusauritusaustralismorphotypesintheequatorialtoantarcticpacific
_version_	1768544184020500480

Latitude-related shell patterns in radiolaria: Botryostrobus auritus/australis morphotypes in the equatorial to antarctic Pacific

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