Vertical distribution patterns of Radiolaria Polycystina (Protista) in the World Ocean: Living ranges, isothermal submersion and settling shells

A critical review of information from ∼7000 plankton, sediment trap and surface sediment samples from the World Ocean indicates that standing stock and species richness (i.e. number of species) of polycystine radiolarians are highest in the tropics and subtropics at 0-100 m (∼1100-1400 ind. m -3), d...

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Autor principal: Boltovskoy, Demetrio
Publicado: 2017
Materias:
abundance
diversity
isothermal submersion
plankton
Radiolaria Polycystina
sediment traps
vertical distribution
World Ocean
biomass
dissolution
global ocean
isotherm
radiolaria
range size
sediment trap
settling behavior
shell
silica
spatial variation
species diversity
species richness
submergence
Polycystinea
Protista
Radiolaria (protozoans)
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01427873_v39_n2_p330_Boltovskoy
http://hdl.handle.net/20.500.12110/paper_01427873_v39_n2_p330_Boltovskoy
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_01427873_v39_n2_p330_Boltovskoy
record_format dspace
spelling paper:paper_01427873_v39_n2_p330_Boltovskoy2025-07-30T17:51:03Z Vertical distribution patterns of Radiolaria Polycystina (Protista) in the World Ocean: Living ranges, isothermal submersion and settling shells Boltovskoy, Demetrio abundance diversity isothermal submersion plankton Radiolaria Polycystina sediment traps vertical distribution World Ocean abundance biomass dissolution global ocean isotherm plankton radiolaria range size sediment trap settling behavior shell silica spatial variation species diversity species richness submergence vertical distribution Polycystinea Protista Radiolaria (protozoans) A critical review of information from ∼7000 plankton, sediment trap and surface sediment samples from the World Ocean indicates that standing stock and species richness (i.e. number of species) of polycystine radiolarians are highest in the tropics and subtropics at 0-100 m (∼1100-1400 ind. m -3), dropping sharply below 400 m (<1 to ∼250 ind. m -3). Polewards of 45°N and 45°S, highest densities (∼200-500 ind. m -3) occur at 100-400 m. In contrast with plankton samples, sediment traps yield highest radiolarian accumulation rates at the deepest layers, probably because of higher biogenic silica dissolution rates in the shallower traps. Deeper plankton and sediment trap samples yield more species than shallower ones; in polar-subpolar areas, many of these species represent in situ living populations, but in the low latitudes, they are largely represented by dead, settling individuals and by colder water species that submerge under the warm surficial layers. Staining of the protoplasm with Rose Bengal does not allow adequate discrimination of subsurface resident populations from dead or nonviable organisms settling from above. The vertical heterogeneity of radiolarian assemblages has significant implications for biogeographic and paleoecological surveys. © The Author 2017. Published by Oxford University Press. Fil:Boltovskoy, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01427873_v39_n2_p330_Boltovskoy http://hdl.handle.net/20.500.12110/paper_01427873_v39_n2_p330_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 abundance
diversity
isothermal submersion
plankton
Radiolaria Polycystina
sediment traps
vertical distribution
World Ocean
abundance
biomass
dissolution
global ocean
isotherm
plankton
radiolaria
range size
sediment trap
settling behavior
shell
silica
spatial variation
species diversity
species richness
submergence
vertical distribution
Polycystinea
Protista
Radiolaria (protozoans)
spellingShingle abundance
diversity
isothermal submersion
plankton
Radiolaria Polycystina
sediment traps
vertical distribution
World Ocean
abundance
biomass
dissolution
global ocean
isotherm
plankton
radiolaria
range size
sediment trap
settling behavior
shell
silica
spatial variation
species diversity
species richness
submergence
vertical distribution
Polycystinea
Protista
Radiolaria (protozoans)
Boltovskoy, Demetrio
Vertical distribution patterns of Radiolaria Polycystina (Protista) in the World Ocean: Living ranges, isothermal submersion and settling shells
topic_facet abundance
diversity
isothermal submersion
plankton
Radiolaria Polycystina
sediment traps
vertical distribution
World Ocean
abundance
biomass
dissolution
global ocean
isotherm
plankton
radiolaria
range size
sediment trap
settling behavior
shell
silica
spatial variation
species diversity
species richness
submergence
vertical distribution
Polycystinea
Protista
Radiolaria (protozoans)
description A critical review of information from ∼7000 plankton, sediment trap and surface sediment samples from the World Ocean indicates that standing stock and species richness (i.e. number of species) of polycystine radiolarians are highest in the tropics and subtropics at 0-100 m (∼1100-1400 ind. m -3), dropping sharply below 400 m (<1 to ∼250 ind. m -3). Polewards of 45°N and 45°S, highest densities (∼200-500 ind. m -3) occur at 100-400 m. In contrast with plankton samples, sediment traps yield highest radiolarian accumulation rates at the deepest layers, probably because of higher biogenic silica dissolution rates in the shallower traps. Deeper plankton and sediment trap samples yield more species than shallower ones; in polar-subpolar areas, many of these species represent in situ living populations, but in the low latitudes, they are largely represented by dead, settling individuals and by colder water species that submerge under the warm surficial layers. Staining of the protoplasm with Rose Bengal does not allow adequate discrimination of subsurface resident populations from dead or nonviable organisms settling from above. The vertical heterogeneity of radiolarian assemblages has significant implications for biogeographic and paleoecological surveys. © The Author 2017. Published by Oxford University Press.
author Boltovskoy, Demetrio
author_facet Boltovskoy, Demetrio
author_sort Boltovskoy, Demetrio
title Vertical distribution patterns of Radiolaria Polycystina (Protista) in the World Ocean: Living ranges, isothermal submersion and settling shells
title_short Vertical distribution patterns of Radiolaria Polycystina (Protista) in the World Ocean: Living ranges, isothermal submersion and settling shells
title_full Vertical distribution patterns of Radiolaria Polycystina (Protista) in the World Ocean: Living ranges, isothermal submersion and settling shells
title_fullStr Vertical distribution patterns of Radiolaria Polycystina (Protista) in the World Ocean: Living ranges, isothermal submersion and settling shells
title_full_unstemmed Vertical distribution patterns of Radiolaria Polycystina (Protista) in the World Ocean: Living ranges, isothermal submersion and settling shells
title_sort vertical distribution patterns of radiolaria polycystina (protista) in the world ocean: living ranges, isothermal submersion and settling shells
publishDate 2017
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01427873_v39_n2_p330_Boltovskoy
http://hdl.handle.net/20.500.12110/paper_01427873_v39_n2_p330_Boltovskoy
work_keys_str_mv AT boltovskoydemetrio verticaldistributionpatternsofradiolariapolycystinaprotistaintheworldoceanlivingrangesisothermalsubmersionandsettlingshells
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