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DISTRIBUTION OF BENTHIC FORAMINIFERA IN COARSE SEDIMENTS, RIA DE VIGO, NW IBERIAN MARGIN

2004; Cushman Foundation for Foraminiferal Research; Volume: 34; Issue: 4 Linguagem: Inglês

10.2113/34.4.258

1943-264X

Paula Diz, Guillermo Francés, Susana Costas, Carlos Souto, Irene Alejo,

Paleontology and Stratigraphy of Fossils

Research Article| October 01, 2004 DISTRIBUTION OF BENTHIC FORAMINIFERA IN COARSE SEDIMENTS, RÍA DE VIGO, NW IBERIAN MARGIN Paula Diz; Paula Diz * 1Departamento de Xeociencias Mariñas e Ordenación do Territorio *E-mail: pauladiz@uvigo.es Search for other works by this author on: GSW Google Scholar Guillermo Francés; Guillermo Francés 1Departamento de Xeociencias Mariñas e Ordenación do Territorio Search for other works by this author on: GSW Google Scholar Susana Costas; Susana Costas 1Departamento de Xeociencias Mariñas e Ordenación do Territorio Search for other works by this author on: GSW Google Scholar Carlos Souto; Carlos Souto 2Departamento de Física da Terra, Universidad de Vigo. Facultad de Ciencias. Campus Lagoas-Marcosende, 36200 Vigo, Spain. Search for other works by this author on: GSW Google Scholar Irene Alejo Irene Alejo 1Departamento de Xeociencias Mariñas e Ordenación do Territorio Search for other works by this author on: GSW Google Scholar Author and Article Information Paula Diz * 1Departamento de Xeociencias Mariñas e Ordenación do Territorio Guillermo Francés 1Departamento de Xeociencias Mariñas e Ordenación do Territorio Susana Costas 1Departamento de Xeociencias Mariñas e Ordenación do Territorio Carlos Souto 2Departamento de Física da Terra, Universidad de Vigo. Facultad de Ciencias. Campus Lagoas-Marcosende, 36200 Vigo, Spain. Irene Alejo 1Departamento de Xeociencias Mariñas e Ordenación do Territorio *E-mail: pauladiz@uvigo.es Publisher: Cushman Foundation for Foraminiferal Research Received: 18 Jun 2003 Accepted: 10 Feb 2004 First Online: 03 Mar 2017 Online ISSN: 1943-264X Print ISSN: 0096-1191 © 2004 Journal of Foraminiferal Research Journal of Foraminiferal Research (2004) 34 (4): 258–275. https://doi.org/10.2113/34.4.258 Article history Received: 18 Jun 2003 Accepted: 10 Feb 2004 First Online: 03 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Paula Diz, Guillermo Francés, Susana Costas, Carlos Souto, Irene Alejo; DISTRIBUTION OF BENTHIC FORAMINIFERA IN COARSE SEDIMENTS, RÍA DE VIGO, NW IBERIAN MARGIN. Journal of Foraminiferal Research 2004;; 34 (4): 258–275. doi: https://doi.org/10.2113/34.4.258 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 distribution of live benthic foraminifera (>63 μm) in box core samples from coarse sediments of the Ría de Vigo (NW Iberian margin) is mainly related to food availability and bottom current range. Live benthic foraminifera are dominated by small forms (63–125 μm). Faunal densities and diversity values suggest that very coarse substrates provide a favorable settlement for live benthic foraminifera. It is suggested that microalgae or bacterial biofilms that colonize shell surfaces are the main food resource for foraminifera. During upwelling events, the food supply to the bottom increases and the environment is colonized by opportunistic species. Moderate- to low-velocity bottom currents favor such pathways. The upwelling not only enhances the density of benthic foraminifera, but also allows the arrival of new species from the shelf. Attached forms are related to relatively high-velocity bottom currents and free living forms to moderate- to low-velocity bottom currents. Live benthic foraminifera inhabit a wide range of sediment depths and are not restricted to the uppermost centimeter. Under relatively high-velocity bottom current regimes, the vertical distribution of live benthic foraminifera is controlled by current strength. In coarse sediments, attached forms commonly considered strict epifaunal, and inhabiting above the disturbance depth, are considered “pseudoepifauna.” Below the disturbance depth, the sediment is not affected by currents and a “true” infauna is recognized. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.