LIVING FORAMINIFERA IN THE SHALLOW WATERS OF ADMIRALTY BAY: DISTRIBUTIONS AND ENVIRONMENTAL FACTORS

Abstract

Research Article| April 01, 2015 LIVING FORAMINIFERA IN THE SHALLOW WATERS OF ADMIRALTY BAY: DISTRIBUTIONS AND ENVIRONMENTAL FACTORS André Rosch Rodrigues; André Rosch Rodrigues * Instituto Oceanográfico - Universidade de São Paulo, Praça do Oceanográfico, 191, Cidade Universitária, São Paulo, SP, Brazil, 05508-900 * Correspondence author. E-mail: [e-mail] Search for other works by this author on: GSW Google Scholar Elisabete de Santis Braga; Elisabete de Santis Braga Instituto Oceanográfico - Universidade de São Paulo, Praça do Oceanográfico, 191, Cidade Universitária, São Paulo, SP, Brazil, 05508-900 Search for other works by this author on: GSW Google Scholar Beatriz Beck Eichler Beatriz Beck Eichler Instituto Oceanográfico - Universidade de São Paulo, Praça do Oceanográfico, 191, Cidade Universitária, São Paulo, SP, Brazil, 05508-900 Search for other works by this author on: GSW Google Scholar Journal of Foraminiferal Research (2015) 45 (2): 128–145. https://doi.org/10.2113/gsjfr.45.2.128 Article history received: 05 Mar 2014 accepted: 17 Nov 2014 first online: 03 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation André Rosch Rodrigues, Elisabete de Santis Braga, Beatriz Beck Eichler; LIVING FORAMINIFERA IN THE SHALLOW WATERS OF ADMIRALTY BAY: DISTRIBUTIONS AND ENVIRONMENTAL FACTORS. Journal of Foraminiferal Research 2015;; 45 (2): 128–145. doi: https://doi.org/10.2113/gsjfr.45.2.128 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyJournal of Foraminiferal Research Search Advanced Search Abstract The living foraminiferal fauna and associated environmental factors were examined using shallow-water sediment and bottom-water samples collected in the Admiralty Bay (King George Island, Antarctica) during the austral summer of 2004–05. Admiralty Bay has similar environmental characteristics to other Antarctic coastal areas, with bottom water rich in inorganic nutrients and heterogeneous bottom sediments with high concentrations of mud and sand. We found 45 foraminiferal species, including 28 agglutinated and 17 calcareous species. The dominant species were the calcareous Bolivina pseudopunctata and the agglutinated Pseudobolivina antarctica and Portatrochammina antarctica. Only the agglutinated Spiroplectammina biformis was found in all samples. Admiralty Bay contained a typical Antarctic foraminiferal fauna, mainly distinguishable by the type of bottom sediment. We detected two distinct assemblages: (a) from the entrance of the bay area with a main channel, we found an assemblage with relatively high species richness, abundance and diversity, and with abundant Bolivina pseudopunctata and Fursenkoina fusiformis; and (b) in the inner parts of the three inlets of the bay (Ezcurra, MacKellar, and Martel inlets), mud- and sulfur-rich sediments contained relatively few foraminifers dominated by a few species, mainly of Globocassidulina and Cassidulinoides. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.