Food availability and gut contents in the ascidian Cnemidocarpa verrucosa at Potter Cove, Antarctica
A high seasonality characterizes Antarctic environments, and generates marked differences in availability and composition of food for benthic filter feeders. During a year-round period at Potter Cove, Antarctica, algal pigment concentration (chlorophyll a) and organic matter were measured in water c...
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ftunibueairesbd:paper:paper_07224060_v25_n1_p58_Tatian 2023-05-15T13:51:25+02:00 Food availability and gut contents in the ascidian Cnemidocarpa verrucosa at Potter Cove, Antarctica Esnal, Graciela Beatriz 2002 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07224060_v25_n1_p58_Tatian https://hdl.handle.net/20.500.12110/paper_07224060_v25_n1_p58_Tatian unknown https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07224060_v25_n1_p58_Tatian http://hdl.handle.net/20.500.12110/paper_07224060_v25_n1_p58_Tatian filter feeder food availability organic matter stomach content zoobenthos Antarctica algae Ascidia Ascidiacea Cnemidocarpa Cnemidocarpa verrucosa Invertebrata 2002 ftunibueairesbd https://doi.org/20.500.12110/paper_07224060_v25_n1_p58_Tatian 2023-02-16T02:15:15Z A high seasonality characterizes Antarctic environments, and generates marked differences in availability and composition of food for benthic filter feeders. During a year-round period at Potter Cove, Antarctica, algal pigment concentration (chlorophyll a) and organic matter were measured in water column and sediment samples. Chemical composition of gut contents of the ascidian Cnemidocarpa verrucosa was also analyzed. Despite the low standing stock, capture and absorption of organic matter were detected year-round, suggesting intake of other particles besides microalgae. The mechanism that provides food to the ascidians and epibenthic communities may be related to the supply of allochtonous particles, bottom resuspension events, and microbial community dynamics. Sea-ice cycles may affect food availability in terms of water-column mixing and benthic resuspension. The scarce primary production and the high amount of sedimented material are not limiting conditions in Potter Cove, which presents a rich ascidian community. Fil:Esnal, G.B. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Other/Unknown Material Antarc* Antarctic Antarctica Sea ice Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires) Antarctic Argentina Potter Cove |
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 |
filter feeder food availability organic matter stomach content zoobenthos Antarctica algae Ascidia Ascidiacea Cnemidocarpa Cnemidocarpa verrucosa Invertebrata |
spellingShingle |
filter feeder food availability organic matter stomach content zoobenthos Antarctica algae Ascidia Ascidiacea Cnemidocarpa Cnemidocarpa verrucosa Invertebrata Esnal, Graciela Beatriz Food availability and gut contents in the ascidian Cnemidocarpa verrucosa at Potter Cove, Antarctica |
topic_facet |
filter feeder food availability organic matter stomach content zoobenthos Antarctica algae Ascidia Ascidiacea Cnemidocarpa Cnemidocarpa verrucosa Invertebrata |
description |
A high seasonality characterizes Antarctic environments, and generates marked differences in availability and composition of food for benthic filter feeders. During a year-round period at Potter Cove, Antarctica, algal pigment concentration (chlorophyll a) and organic matter were measured in water column and sediment samples. Chemical composition of gut contents of the ascidian Cnemidocarpa verrucosa was also analyzed. Despite the low standing stock, capture and absorption of organic matter were detected year-round, suggesting intake of other particles besides microalgae. The mechanism that provides food to the ascidians and epibenthic communities may be related to the supply of allochtonous particles, bottom resuspension events, and microbial community dynamics. Sea-ice cycles may affect food availability in terms of water-column mixing and benthic resuspension. The scarce primary production and the high amount of sedimented material are not limiting conditions in Potter Cove, which presents a rich ascidian community. Fil:Esnal, G.B. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. |
author |
Esnal, Graciela Beatriz |
author_facet |
Esnal, Graciela Beatriz |
author_sort |
Esnal, Graciela Beatriz |
title |
Food availability and gut contents in the ascidian Cnemidocarpa verrucosa at Potter Cove, Antarctica |
title_short |
Food availability and gut contents in the ascidian Cnemidocarpa verrucosa at Potter Cove, Antarctica |
title_full |
Food availability and gut contents in the ascidian Cnemidocarpa verrucosa at Potter Cove, Antarctica |
title_fullStr |
Food availability and gut contents in the ascidian Cnemidocarpa verrucosa at Potter Cove, Antarctica |
title_full_unstemmed |
Food availability and gut contents in the ascidian Cnemidocarpa verrucosa at Potter Cove, Antarctica |
title_sort |
food availability and gut contents in the ascidian cnemidocarpa verrucosa at potter cove, antarctica |
publishDate |
2002 |
url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07224060_v25_n1_p58_Tatian https://hdl.handle.net/20.500.12110/paper_07224060_v25_n1_p58_Tatian |
geographic |
Antarctic Argentina Potter Cove |
geographic_facet |
Antarctic Argentina Potter Cove |
genre |
Antarc* Antarctic Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Sea ice |
op_relation |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07224060_v25_n1_p58_Tatian http://hdl.handle.net/20.500.12110/paper_07224060_v25_n1_p58_Tatian |
op_doi |
https://doi.org/20.500.12110/paper_07224060_v25_n1_p58_Tatian |
_version_ |
1766255270789382144 |