Abundance and diversity of tintinnids (planktonic ciliates) under contrasting levels of productivity in the Argentine Shelf and Drake Passage

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The relationship between the abundance and diversity of tintinnids and the concentration of chlorophyll a (Chla) was contrasted between neritic and oceanic waters of the SW Atlantic during autumn and summer. Chla and tintinnid abundance and biomass reached maximum values (17.53μgL -1, 2.76×10 3ind.L...

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Autores principales: Santoferrara, L.F., Alder, V.A.
Formato: JOUR
Materias:
Abundance
Biomass
Diversity
Species richness
SW atlantic
Tintinnid ciliates
abundance
biological production
biomass
chlorophyll a
ciliate
diversity index
marine ecosystem
species diversity
species richness
subtidal environment
Argentine Shelf
Atlantic Ocean
Drake Passage
Ciliophora
Tintinnida
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_13851101_v71_n_p25_Santoferrara
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_13851101_v71_n_p25_Santoferrara
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spelling todo:paper_13851101_v71_n_p25_Santoferrara2023-10-03T16:12:06Z Abundance and diversity of tintinnids (planktonic ciliates) under contrasting levels of productivity in the Argentine Shelf and Drake Passage Santoferrara, L.F. Alder, V.A. Abundance Biomass Diversity Species richness SW atlantic Tintinnid ciliates abundance biological production biomass chlorophyll a ciliate diversity index marine ecosystem species diversity species richness subtidal environment Argentine Shelf Atlantic Ocean Drake Passage Ciliophora Tintinnida The relationship between the abundance and diversity of tintinnids and the concentration of chlorophyll a (Chla) was contrasted between neritic and oceanic waters of the SW Atlantic during autumn and summer. Chla and tintinnid abundance and biomass reached maximum values (17.53μgL -1, 2.76×10 3ind.L -1, and 6.29μgCL -1, respectively) in shelf waters during summer, and their mean values generally differed by one order of magnitude between environments. Peaks in species richness (13) and Shannon diversity index (2.12) were found in the shelf-ocean boundary, but both variables showed nonsignificant differences between areas. Species richness correlated significantly with both Chla and abundance. Such relationships, which followed a negative linear or quadratic function in the shelf and a positive linear function in oceanic waters, are thought to reflect either the competitive dominance of one species or a relatively wide spectrum of tintinnid size-classes, respectively. © 2012 Elsevier B.V. Fil:Santoferrara, L.F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Alder, V.A. 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_13851101_v71_n_p25_Santoferrara
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
Biomass
Diversity
Species richness
SW atlantic
Tintinnid ciliates
abundance
biological production
biomass
chlorophyll a
ciliate
diversity index
marine ecosystem
species diversity
species richness
subtidal environment
Argentine Shelf
Atlantic Ocean
Drake Passage
Ciliophora
Tintinnida
spellingShingle Abundance
Biomass
Diversity
Species richness
SW atlantic
Tintinnid ciliates
abundance
biological production
biomass
chlorophyll a
ciliate
diversity index
marine ecosystem
species diversity
species richness
subtidal environment
Argentine Shelf
Atlantic Ocean
Drake Passage
Ciliophora
Tintinnida
Santoferrara, L.F.
Alder, V.A.
Abundance and diversity of tintinnids (planktonic ciliates) under contrasting levels of productivity in the Argentine Shelf and Drake Passage
topic_facet Abundance
Biomass
Diversity
Species richness
SW atlantic
Tintinnid ciliates
abundance
biological production
biomass
chlorophyll a
ciliate
diversity index
marine ecosystem
species diversity
species richness
subtidal environment
Argentine Shelf
Atlantic Ocean
Drake Passage
Ciliophora
Tintinnida
description The relationship between the abundance and diversity of tintinnids and the concentration of chlorophyll a (Chla) was contrasted between neritic and oceanic waters of the SW Atlantic during autumn and summer. Chla and tintinnid abundance and biomass reached maximum values (17.53μgL -1, 2.76×10 3ind.L -1, and 6.29μgCL -1, respectively) in shelf waters during summer, and their mean values generally differed by one order of magnitude between environments. Peaks in species richness (13) and Shannon diversity index (2.12) were found in the shelf-ocean boundary, but both variables showed nonsignificant differences between areas. Species richness correlated significantly with both Chla and abundance. Such relationships, which followed a negative linear or quadratic function in the shelf and a positive linear function in oceanic waters, are thought to reflect either the competitive dominance of one species or a relatively wide spectrum of tintinnid size-classes, respectively. © 2012 Elsevier B.V.
format JOUR
author Santoferrara, L.F.
Alder, V.A.
author_facet Santoferrara, L.F.
Alder, V.A.
author_sort Santoferrara, L.F.
title Abundance and diversity of tintinnids (planktonic ciliates) under contrasting levels of productivity in the Argentine Shelf and Drake Passage
title_short Abundance and diversity of tintinnids (planktonic ciliates) under contrasting levels of productivity in the Argentine Shelf and Drake Passage
title_full Abundance and diversity of tintinnids (planktonic ciliates) under contrasting levels of productivity in the Argentine Shelf and Drake Passage
title_fullStr Abundance and diversity of tintinnids (planktonic ciliates) under contrasting levels of productivity in the Argentine Shelf and Drake Passage
title_full_unstemmed Abundance and diversity of tintinnids (planktonic ciliates) under contrasting levels of productivity in the Argentine Shelf and Drake Passage
title_sort abundance and diversity of tintinnids (planktonic ciliates) under contrasting levels of productivity in the argentine shelf and drake passage
url http://hdl.handle.net/20.500.12110/paper_13851101_v71_n_p25_Santoferrara
work_keys_str_mv AT santoferraralf abundanceanddiversityoftintinnidsplanktonicciliatesundercontrastinglevelsofproductivityintheargentineshelfanddrakepassage
AT alderva abundanceanddiversityoftintinnidsplanktonicciliatesundercontrastinglevelsofproductivityintheargentineshelfanddrakepassage
_version_ 1807315287951802368

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