Tracing latitudinal gradient, river discharge and water masses along the subtropical South American coast using benthic Foraminifera assemblages
More than 30% of Buccella peruviana (D'Orbigny), Globocassidulina crassa porrecta (Earland & Heron-Allen), Cibicides mackannai (Galloway & Wissler) and C. refulgens (Montfort) indicate the presence of cold Sub Antarctic Shelf Water in winter, from 33.5 to 38.3º S, deeper than 100 m, in...
Published in: | Brazilian Journal of Biology |
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Language: | English |
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Instituto Internacional de Ecologia
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Online Access: | https://doi.org/10.1590/S1519-69842012000400010 https://doaj.org/article/92848ba5c5494ad2a97a23adf7b8c8b4 |
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ftdoajarticles:oai:doaj.org/article:92848ba5c5494ad2a97a23adf7b8c8b4 2023-05-15T13:48:44+02:00 Tracing latitudinal gradient, river discharge and water masses along the subtropical South American coast using benthic Foraminifera assemblages PPB Eichler AR Rodrigues BB Eichler ES Braga EJD Campos https://doi.org/10.1590/S1519-69842012000400010 https://doaj.org/article/92848ba5c5494ad2a97a23adf7b8c8b4 EN eng Instituto Internacional de Ecologia http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842012000400010&lng=en&tlng=en https://doaj.org/toc/1678-4375 1678-4375 doi:10.1590/S1519-69842012000400010 https://doaj.org/article/92848ba5c5494ad2a97a23adf7b8c8b4 Brazilian Journal of Biology, Vol 72, Iss 3 suppl, Pp 723-759 foraminifera diversity subantarctic and subtropical shelf water subtropical shelf front freshwater influence Science Q Biology (General) QH301-705.5 Zoology QL1-991 Botany QK1-989 article ftdoajarticles https://doi.org/10.1590/S1519-69842012000400010 2022-12-31T02:55:47Z More than 30% of Buccella peruviana (D'Orbigny), Globocassidulina crassa porrecta (Earland & Heron-Allen), Cibicides mackannai (Galloway & Wissler) and C. refulgens (Montfort) indicate the presence of cold Sub Antarctic Shelf Water in winter, from 33.5 to 38.3º S, deeper than 100 m, in the southern part of the study area. In summer, the abundance of this association decreases to less than 15% around 37.5-38.9º S where two species (Globocassidulina subglobosa (Brady), Uvigerina peregrina (Cushman) take over. G. subglobosa, U. peregrina, and Hanzawaia boueana (D'Orbigny) are found at 27-33º S in both seasons in less than 55 m deep in the northern part, and are linked with warm Subtropical Shelf Water and Tropical Water. Freshwater influence was signalized by high silicate concentration and by the presence of Pseudononion atlanticum (Cushman), Bolivina striatula (Cushman), Buliminella elegantissima (D'Orbigny), Bulimina elongata (D'Orbigny), Elphidium excavatum (Terquem), E. poeyanum (D'Orbigny), Ammobaculites exiguus (Cushman & Brönnimann), Arenoparrella mexicana (Kornfeld), Gaudryina exillis (Cushman & Brönnimann), Textularia earlandi (Parker) and thecamoebians in four sectors of the shelf. The presence of Bulimina marginata (D'Orbigny) between 34.1-32.8º S in the winter and 34.2-32.7º S in the summer indicates that the influence of the Subtropical Shelf Front on the sediment does not change seasonally, otherwise, the presence of Angulogerina angulosa (Williamson) in the winter, only in Mar del Plata (38.9º S), show that Malvinas currents are not influencing the sediment in the summer. Article in Journal/Newspaper Antarc* Antarctic Directory of Open Access Journals: DOAJ Articles Antarctic Williamson ENVELOPE(-65.383,-65.383,-67.717,-67.717) Brazilian Journal of Biology 72 3 suppl 723 759 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
foraminifera diversity subantarctic and subtropical shelf water subtropical shelf front freshwater influence Science Q Biology (General) QH301-705.5 Zoology QL1-991 Botany QK1-989 |
spellingShingle |
foraminifera diversity subantarctic and subtropical shelf water subtropical shelf front freshwater influence Science Q Biology (General) QH301-705.5 Zoology QL1-991 Botany QK1-989 PPB Eichler AR Rodrigues BB Eichler ES Braga EJD Campos Tracing latitudinal gradient, river discharge and water masses along the subtropical South American coast using benthic Foraminifera assemblages |
topic_facet |
foraminifera diversity subantarctic and subtropical shelf water subtropical shelf front freshwater influence Science Q Biology (General) QH301-705.5 Zoology QL1-991 Botany QK1-989 |
description |
More than 30% of Buccella peruviana (D'Orbigny), Globocassidulina crassa porrecta (Earland & Heron-Allen), Cibicides mackannai (Galloway & Wissler) and C. refulgens (Montfort) indicate the presence of cold Sub Antarctic Shelf Water in winter, from 33.5 to 38.3º S, deeper than 100 m, in the southern part of the study area. In summer, the abundance of this association decreases to less than 15% around 37.5-38.9º S where two species (Globocassidulina subglobosa (Brady), Uvigerina peregrina (Cushman) take over. G. subglobosa, U. peregrina, and Hanzawaia boueana (D'Orbigny) are found at 27-33º S in both seasons in less than 55 m deep in the northern part, and are linked with warm Subtropical Shelf Water and Tropical Water. Freshwater influence was signalized by high silicate concentration and by the presence of Pseudononion atlanticum (Cushman), Bolivina striatula (Cushman), Buliminella elegantissima (D'Orbigny), Bulimina elongata (D'Orbigny), Elphidium excavatum (Terquem), E. poeyanum (D'Orbigny), Ammobaculites exiguus (Cushman & Brönnimann), Arenoparrella mexicana (Kornfeld), Gaudryina exillis (Cushman & Brönnimann), Textularia earlandi (Parker) and thecamoebians in four sectors of the shelf. The presence of Bulimina marginata (D'Orbigny) between 34.1-32.8º S in the winter and 34.2-32.7º S in the summer indicates that the influence of the Subtropical Shelf Front on the sediment does not change seasonally, otherwise, the presence of Angulogerina angulosa (Williamson) in the winter, only in Mar del Plata (38.9º S), show that Malvinas currents are not influencing the sediment in the summer. |
format |
Article in Journal/Newspaper |
author |
PPB Eichler AR Rodrigues BB Eichler ES Braga EJD Campos |
author_facet |
PPB Eichler AR Rodrigues BB Eichler ES Braga EJD Campos |
author_sort |
PPB Eichler |
title |
Tracing latitudinal gradient, river discharge and water masses along the subtropical South American coast using benthic Foraminifera assemblages |
title_short |
Tracing latitudinal gradient, river discharge and water masses along the subtropical South American coast using benthic Foraminifera assemblages |
title_full |
Tracing latitudinal gradient, river discharge and water masses along the subtropical South American coast using benthic Foraminifera assemblages |
title_fullStr |
Tracing latitudinal gradient, river discharge and water masses along the subtropical South American coast using benthic Foraminifera assemblages |
title_full_unstemmed |
Tracing latitudinal gradient, river discharge and water masses along the subtropical South American coast using benthic Foraminifera assemblages |
title_sort |
tracing latitudinal gradient, river discharge and water masses along the subtropical south american coast using benthic foraminifera assemblages |
publisher |
Instituto Internacional de Ecologia |
url |
https://doi.org/10.1590/S1519-69842012000400010 https://doaj.org/article/92848ba5c5494ad2a97a23adf7b8c8b4 |
long_lat |
ENVELOPE(-65.383,-65.383,-67.717,-67.717) |
geographic |
Antarctic Williamson |
geographic_facet |
Antarctic Williamson |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Brazilian Journal of Biology, Vol 72, Iss 3 suppl, Pp 723-759 |
op_relation |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842012000400010&lng=en&tlng=en https://doaj.org/toc/1678-4375 1678-4375 doi:10.1590/S1519-69842012000400010 https://doaj.org/article/92848ba5c5494ad2a97a23adf7b8c8b4 |
op_doi |
https://doi.org/10.1590/S1519-69842012000400010 |
container_title |
Brazilian Journal of Biology |
container_volume |
72 |
container_issue |
3 suppl |
container_start_page |
723 |
op_container_end_page |
759 |
_version_ |
1766249627627028480 |