Abyssal benthic foraminifera in the Polar Front Region (Pacific Sector): faunal composition, standing stock and size structure.
We have evaluated the quantitative composition of Rose Bengal-stained benthic foraminiferal assemblages of surface samples from two box cores (ANTA98-28 bc; ANTA01-01 bc) collected at the Polar Front in the Pacific sector of the Southern Ocean. Size structure, faunal composition and standing stock w...
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Online Access: | http://hdl.handle.net/11566/30868 https://doi.org/10.1080/02757540410001655387 |
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ftupmarcheiris:oai:iris.univpm.it:11566/30868 2024-04-21T07:50:36+00:00 Abyssal benthic foraminifera in the Polar Front Region (Pacific Sector): faunal composition, standing stock and size structure. SABBATINI, ANNA NEGRI, Alessandra MORIGI C. RAVAIOLI M. Sabbatini, Anna Morigi, C. Ravaioli, M. Negri, Alessandra 2004 http://hdl.handle.net/11566/30868 https://doi.org/10.1080/02757540410001655387 unknown info:eu-repo/semantics/altIdentifier/wos/WOS:000208520200012 volume:20 issue:1 firstpage:117 lastpage:129 numberofpages:13 journal:CHEMISTRY IN ECOLOGY http://hdl.handle.net/11566/30868 doi:10.1080/02757540410001655387 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-5044242764 abyssal plain benthic foraminifera community composition size distribution size structure info:eu-repo/semantics/article 2004 ftupmarcheiris https://doi.org/10.1080/02757540410001655387 2024-03-28T01:39:53Z We have evaluated the quantitative composition of Rose Bengal-stained benthic foraminiferal assemblages of surface samples from two box cores (ANTA98-28 bc; ANTA01-01 bc) collected at the Polar Front in the Pacific sector of the Southern Ocean. Size structure, faunal composition and standing stock were analysed for living (Rose Bengalstained) and dead foraminifera. The size fractions among 63-150, 150-250 and >250 μm were counted separately in order to study the foraminiferal size distribution and to compare our results with earlier Antarctic studies. The low organic carbon content of the sediment, and hence the limited food availability, is reflected by very low standing stocks and low diversity values. Calcareous taxa dominated dead foraminiferal assemblages that were more diverse than the stained assemblages. In the sediment samples of ANTA01-01 bc, the living fauna contained agglutinated taxa and soft-shelled monothalamous forms. Our data represent the southernmost record of benthic foraminiferal community (63° S) from the Polar Front region in the Pacific sector. These samples provide further evidence for the occurrence of meiofaunal foraminifera in extreme environments, like the Antarctic region, where the uncoupled annual variations in temperature and production cause strong effects on the structure of benthic communities. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Università Politecnica delle Marche: IRIS Chemistry and Ecology 20 sup1 S117 S129 |
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Open Polar |
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Università Politecnica delle Marche: IRIS |
op_collection_id |
ftupmarcheiris |
language |
unknown |
topic |
abyssal plain benthic foraminifera community composition size distribution size structure |
spellingShingle |
abyssal plain benthic foraminifera community composition size distribution size structure SABBATINI, ANNA NEGRI, Alessandra MORIGI C. RAVAIOLI M. Abyssal benthic foraminifera in the Polar Front Region (Pacific Sector): faunal composition, standing stock and size structure. |
topic_facet |
abyssal plain benthic foraminifera community composition size distribution size structure |
description |
We have evaluated the quantitative composition of Rose Bengal-stained benthic foraminiferal assemblages of surface samples from two box cores (ANTA98-28 bc; ANTA01-01 bc) collected at the Polar Front in the Pacific sector of the Southern Ocean. Size structure, faunal composition and standing stock were analysed for living (Rose Bengalstained) and dead foraminifera. The size fractions among 63-150, 150-250 and >250 μm were counted separately in order to study the foraminiferal size distribution and to compare our results with earlier Antarctic studies. The low organic carbon content of the sediment, and hence the limited food availability, is reflected by very low standing stocks and low diversity values. Calcareous taxa dominated dead foraminiferal assemblages that were more diverse than the stained assemblages. In the sediment samples of ANTA01-01 bc, the living fauna contained agglutinated taxa and soft-shelled monothalamous forms. Our data represent the southernmost record of benthic foraminiferal community (63° S) from the Polar Front region in the Pacific sector. These samples provide further evidence for the occurrence of meiofaunal foraminifera in extreme environments, like the Antarctic region, where the uncoupled annual variations in temperature and production cause strong effects on the structure of benthic communities. |
author2 |
Sabbatini, Anna Morigi, C. Ravaioli, M. Negri, Alessandra |
format |
Article in Journal/Newspaper |
author |
SABBATINI, ANNA NEGRI, Alessandra MORIGI C. RAVAIOLI M. |
author_facet |
SABBATINI, ANNA NEGRI, Alessandra MORIGI C. RAVAIOLI M. |
author_sort |
SABBATINI, ANNA |
title |
Abyssal benthic foraminifera in the Polar Front Region (Pacific Sector): faunal composition, standing stock and size structure. |
title_short |
Abyssal benthic foraminifera in the Polar Front Region (Pacific Sector): faunal composition, standing stock and size structure. |
title_full |
Abyssal benthic foraminifera in the Polar Front Region (Pacific Sector): faunal composition, standing stock and size structure. |
title_fullStr |
Abyssal benthic foraminifera in the Polar Front Region (Pacific Sector): faunal composition, standing stock and size structure. |
title_full_unstemmed |
Abyssal benthic foraminifera in the Polar Front Region (Pacific Sector): faunal composition, standing stock and size structure. |
title_sort |
abyssal benthic foraminifera in the polar front region (pacific sector): faunal composition, standing stock and size structure. |
publishDate |
2004 |
url |
http://hdl.handle.net/11566/30868 https://doi.org/10.1080/02757540410001655387 |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000208520200012 volume:20 issue:1 firstpage:117 lastpage:129 numberofpages:13 journal:CHEMISTRY IN ECOLOGY http://hdl.handle.net/11566/30868 doi:10.1080/02757540410001655387 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-5044242764 |
op_doi |
https://doi.org/10.1080/02757540410001655387 |
container_title |
Chemistry and Ecology |
container_volume |
20 |
container_issue |
sup1 |
container_start_page |
S117 |
op_container_end_page |
S129 |
_version_ |
1796934266109558784 |