MICROHABITAT SELECTION OF BENTHIC FORAMINIFERA IN SEDIMENTS OFF THE RHONE RIVER MOUTH (NW MEDITERRANEAN)
2010; Cushman Foundation for Foraminiferal Research; Volume: 40; Issue: 3 Linguagem: Inglês
10.2113/gsjfr.40.3.231
ISSN1943-264X
AutoresMeryem Mojtahid, Frans Jorissen, Bruno Lansard, Christophe Fontanier,
Tópico(s)Aquatic Ecosystems and Phytoplankton Dynamics
ResumoResearch Article| July 01, 2010 MICROHABITAT SELECTION OF BENTHIC FORAMINIFERA IN SEDIMENTS OFF THE RHÔNE RIVER MOUTH (NW MEDITERRANEAN) Meryem Mojtahid; Meryem Mojtahid 5 1Laboratory of Recent and Fossil Bio-Indicators (BIAF), UPRES EA 2644, University of Angers 2, Boulevard Lavoisier, 49045 Angers Cedex, France, and Laboratoire d'Etude des Bio-Indicateurs Marins (LEBIM), Ker Chalon, 85350 Ile D'Yeu, France 3Present address: National Oceanography Centre, Southampton, Waterfront Campus, European way, Southampton SO14 3ZH, UK. 5Correspondence author. E-mail: meryem.mojtahid@univ-angers.fr Search for other works by this author on: GSW Google Scholar Franciscus Jorissen; Franciscus Jorissen 1Laboratory of Recent and Fossil Bio-Indicators (BIAF), UPRES EA 2644, University of Angers 2, Boulevard Lavoisier, 49045 Angers Cedex, France, and Laboratoire d'Etude des Bio-Indicateurs Marins (LEBIM), Ker Chalon, 85350 Ile D'Yeu, France Search for other works by this author on: GSW Google Scholar Bruno Lansard; Bruno Lansard 2Laboratoire des Sciences du Climat et de l'Environnement (LSCE), UMR CEA-CNRS 1572 and Institut Pierre Simon Laplace (IPSL), Avenue de la terrasse, F-91198, Gif sur Yvette, France 4Present address: Earth & Planetary Sciences, McGill University, 3450 University Street, Montreal, Quebec H3A 2A7, Canada Search for other works by this author on: GSW Google Scholar Christophe Fontanier Christophe Fontanier 1Laboratory of Recent and Fossil Bio-Indicators (BIAF), UPRES EA 2644, University of Angers 2, Boulevard Lavoisier, 49045 Angers Cedex, France, and Laboratoire d'Etude des Bio-Indicateurs Marins (LEBIM), Ker Chalon, 85350 Ile D'Yeu, France Search for other works by this author on: GSW Google Scholar Author and Article Information Meryem Mojtahid 3Present address: National Oceanography Centre, Southampton, Waterfront Campus, European way, Southampton SO14 3ZH, UK. 5 1Laboratory of Recent and Fossil Bio-Indicators (BIAF), UPRES EA 2644, University of Angers 2, Boulevard Lavoisier, 49045 Angers Cedex, France, and Laboratoire d'Etude des Bio-Indicateurs Marins (LEBIM), Ker Chalon, 85350 Ile D'Yeu, France Franciscus Jorissen 1Laboratory of Recent and Fossil Bio-Indicators (BIAF), UPRES EA 2644, University of Angers 2, Boulevard Lavoisier, 49045 Angers Cedex, France, and Laboratoire d'Etude des Bio-Indicateurs Marins (LEBIM), Ker Chalon, 85350 Ile D'Yeu, France Bruno Lansard 4Present address: Earth & Planetary Sciences, McGill University, 3450 University Street, Montreal, Quebec H3A 2A7, Canada 2Laboratoire des Sciences du Climat et de l'Environnement (LSCE), UMR CEA-CNRS 1572 and Institut Pierre Simon Laplace (IPSL), Avenue de la terrasse, F-91198, Gif sur Yvette, France Christophe Fontanier 1Laboratory of Recent and Fossil Bio-Indicators (BIAF), UPRES EA 2644, University of Angers 2, Boulevard Lavoisier, 49045 Angers Cedex, France, and Laboratoire d'Etude des Bio-Indicateurs Marins (LEBIM), Ker Chalon, 85350 Ile D'Yeu, France 5Correspondence author. E-mail: meryem.mojtahid@univ-angers.fr Publisher: Cushman Foundation for Foraminiferal Research Received: 21 Jan 2009 Accepted: 31 Jul 2009 First Online: 03 Mar 2017 Online ISSN: 1943-264X Print ISSN: 0096-1191 © 2010 Journal of Foraminiferal Research Journal of Foraminiferal Research (2010) 40 (3): 231–246. https://doi.org/10.2113/gsjfr.40.3.231 Article history Received: 21 Jan 2009 Accepted: 31 Jul 2009 First Online: 03 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Meryem Mojtahid, Franciscus Jorissen, Bruno Lansard, Christophe Fontanier; MICROHABITAT SELECTION OF BENTHIC FORAMINIFERA IN SEDIMENTS OFF THE RHÔNE RIVER MOUTH (NW MEDITERRANEAN). Journal of Foraminiferal Research 2010;; 40 (3): 231–246. doi: https://doi.org/10.2113/gsjfr.40.3.231 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 microhabitats and the composition of living benthic foraminiferal faunas in the sediments deposited off the Rhône River mouth are directly influenced by the Rhône River input. In this shallow-water environment (20–98 m water depth), the vertical distribution of the species is not well defined, probably due to the low penetration of oxygen into the sediment. We show the existence of two types of species: "predominantly superficial" taxa showing a density maximum in the topmost sediment layer, and "potentially/ predominantly infaunal taxa" that are also frequent in the topmost sediment, but which show considerable densities in anoxic deeper sediment layers as well. In the area that is strongly influenced by river input (near the river mouth and in the southwestern direction, following the river plume), the fauna is composed mostly of "potentially/predominantly infaunal" species adapted to a higher contribution of terrestrial organic matter, generally of lower quality, and to the low penetration of oxygen into the sediment. This fauna is composed of species tolerant to strong environmental stress (e.g., Nonionella turgida, Nonion scaphum, Rectuvigerina phlegeri, and Valvulineria bradyana). The stations less influenced by fluvial input (located south and east of the river mouth) are composed of species that colonize oxygenated interstices in the upper centimeter of sediment. The dominant species are mainly "predominantly superficial" taxa (e.g., Cassidulina carinata, Bulimina aculeata), which are known to react quickly to provisions of labile organic matter. The correlation between these two types of faunas and the two prevalent environmental factors suggests that the vertical distribution of living foraminifera in front of the Rhône River mouth is primarily controlled by the quality of the organic matter and less by the quantity of the organic matter and depth of oxygen penetration into the sediment. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
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