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FORAMINIFERAL ASSEMBLAGES IN A HYPERSALINE LAGOON, ARARUAMA (R.J.) BRAZIL

2001; Cushman Foundation for Foraminiferal Research; Volume: 31; Issue: 2 Linguagem: Inglês

10.2113/0310133

1943-264X

Jean-Pierre Debenay, Emmanuelle Geslin, Beatriz Beck Eichler, Wânia Duleba, Florence Sylvestre, Patrícia P.B. Eichler,

Aquatic Ecosystems and Phytoplankton Dynamics

Research Article| April 01, 2001 FORAMINIFERAL ASSEMBLAGES IN A HYPERSALINE LAGOON, ARARUAMA (R.J.) BRAZIL Jean-Pierre Debenay; Jean-Pierre Debenay 1EA 2644, Laboratoire de Géologie-Université d'Angers, 2 Bd La-voisier, 49045 Angers cedex, France and LEBIM (Laboratoire d'Etude des Bio-Indicateurs Marins), 85350 Ile d'Yeu, France. E-mail: debenay@univ-angers.fr Search for other works by this author on: GSW Google Scholar Emmanuelle Geslin; Emmanuelle Geslin 1EA 2644, Laboratoire de Géologie-Université d'Angers, 2 Bd La-voisier, 49045 Angers cedex, France and LEBIM (Laboratoire d'Etude des Bio-Indicateurs Marins), 85350 Ile d'Yeu, France. Search for other works by this author on: GSW Google Scholar Beatriz Beck Eichler; Beatriz Beck Eichler 2Instituto Oceanografico, USP, 05508-900 Praça do Oceanografico, 191, Sao Paulo, SP, Brazil. E-mail: bbeichle@usp.br Search for other works by this author on: GSW Google Scholar Wânia Duleba; Wânia Duleba 2Instituto Oceanografico, USP, 05508-900 Praça do Oceanografico, 191, Sao Paulo, SP, Brazil. E-mail: bbeichle@usp.br Search for other works by this author on: GSW Google Scholar Florence Sylvestre; Florence Sylvestre 1EA 2644, Laboratoire de Géologie-Université d'Angers, 2 Bd La-voisier, 49045 Angers cedex, France and LEBIM (Laboratoire d'Etude des Bio-Indicateurs Marins), 85350 Ile d'Yeu, France. Search for other works by this author on: GSW Google Scholar Patricia Eichler Patricia Eichler 2Instituto Oceanografico, USP, 05508-900 Praça do Oceanografico, 191, Sao Paulo, SP, Brazil. E-mail: bbeichle@usp.br Search for other works by this author on: GSW Google Scholar Author and Article Information Jean-Pierre Debenay 1EA 2644, Laboratoire de Géologie-Université d'Angers, 2 Bd La-voisier, 49045 Angers cedex, France and LEBIM (Laboratoire d'Etude des Bio-Indicateurs Marins), 85350 Ile d'Yeu, France. Emmanuelle Geslin 1EA 2644, Laboratoire de Géologie-Université d'Angers, 2 Bd La-voisier, 49045 Angers cedex, France and LEBIM (Laboratoire d'Etude des Bio-Indicateurs Marins), 85350 Ile d'Yeu, France. Beatriz Beck Eichler 2Instituto Oceanografico, USP, 05508-900 Praça do Oceanografico, 191, Sao Paulo, SP, Brazil. E-mail: bbeichle@usp.br Wânia Duleba 2Instituto Oceanografico, USP, 05508-900 Praça do Oceanografico, 191, Sao Paulo, SP, Brazil. E-mail: bbeichle@usp.br Florence Sylvestre 1EA 2644, Laboratoire de Géologie-Université d'Angers, 2 Bd La-voisier, 49045 Angers cedex, France and LEBIM (Laboratoire d'Etude des Bio-Indicateurs Marins), 85350 Ile d'Yeu, France. Patricia Eichler 2Instituto Oceanografico, USP, 05508-900 Praça do Oceanografico, 191, Sao Paulo, SP, Brazil. E-mail: bbeichle@usp.br E-mail: debenay@univ-angers.fr Publisher: Cushman Foundation for Foraminiferal Research First Online: 03 Mar 2017 Online ISSN: 1943-264X Print ISSN: 0096-1191 © 2001 Journal of Foraminiferal Research Journal of Foraminiferal Research (2001) 31 (2): 133–151. https://doi.org/10.2113/0310133 Article history 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 Jean-Pierre Debenay, Emmanuelle Geslin, Beatriz Beck Eichler, Wânia Duleba, Florence Sylvestre, Patricia Eichler; FORAMINIFERAL ASSEMBLAGES IN A HYPERSALINE LAGOON, ARARUAMA (R.J.) BRAZIL. Journal of Foraminiferal Research 2001;; 31 (2): 133–151. doi: https://doi.org/10.2113/0310133 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 Foraminiferal assemblages were studied in 93 samples collected in the lagoon of Araruama and in the adjacent area. The lagoon of Araruama is one of the largest hypersaline lagoons in the world, with a salinity range of 52–65 ‰. Historical reports show that the lagoon has been hypersaline since at least the 16th century. Foraminiferal assemblages are dominated by miliolids, mainly Triloculina oblonga, and rotaliids, with Ammonia tepida and the less abundant Cribroelphidium excavatum var. selseyense. Textulariids are almost absent. This assemblage is similar to those usually reported from hypersaline lagoons with sandy carbonate-rich sediments and from salt marshes. A high proportion of aberrant tests was observed. Anthropogenic stresses do not seem to be responsible for these morphological abnormalities, which are attributed to high salinity conditions and to changes of salinity. However, the higher proportion of Ammonia tepida in the more impacted northern part of the lagoon is probably due to human impact. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.