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- W2000777304 abstract "Research Article| April 01, 2006 HYPOXIA HOTSPOTS IN THE MISSISSIPPI BIGHT Charlotte A. Brunner; Charlotte A. Brunner 1Department of Marine Science, The University of Southern Mississippi, Stennis Space Center, MS 39529, USA. E-mail: charlotte.brunner@usm.edu Search for other works by this author on: GSW Google Scholar Jennifer M. Beall; Jennifer M. Beall 2Naval Research Laboratory, Stennis Space Center, MS 39529, and Department of Geology and Geophysics, University of New Orleans, New Orleans, LA 70148, USA. Current address: Coastal Management Division, Louisiana Department of Natural Resources, P.O. Box 44487, Baton Rouge, LA 70804-4487, USA. E-mail: jenniferb@dnr.state.la.us Search for other works by this author on: GSW Google Scholar Samuel J. Bentley; Samuel J. Bentley 3Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA 70803, USA. E-mail: sjb@lsu.edu Search for other works by this author on: GSW Google Scholar Yoko Furukawa Yoko Furukawa 4Naval Research Laboratory, Stennis Space Center, MS 39529, USA. E-mail: yfurukawa@nrlssc.navy.mil Search for other works by this author on: GSW Google Scholar Author and Article Information Charlotte A. Brunner 1Department of Marine Science, The University of Southern Mississippi, Stennis Space Center, MS 39529, USA. E-mail: charlotte.brunner@usm.edu Jennifer M. Beall 2Naval Research Laboratory, Stennis Space Center, MS 39529, and Department of Geology and Geophysics, University of New Orleans, New Orleans, LA 70148, USA. Current address: Coastal Management Division, Louisiana Department of Natural Resources, P.O. Box 44487, Baton Rouge, LA 70804-4487, USA. E-mail: jenniferb@dnr.state.la.us Samuel J. Bentley 3Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA 70803, USA. E-mail: sjb@lsu.edu Yoko Furukawa 4Naval Research Laboratory, Stennis Space Center, MS 39529, USA. E-mail: yfurukawa@nrlssc.navy.mil Publisher: Cushman Foundation for Foraminiferal Research Received: 12 Jan 2005 Accepted: 27 Nov 2005 First Online: 03 Mar 2017 Online ISSN: 1943-264X Print ISSN: 0096-1191 © 2006 Journal of Foraminiferal Research Journal of Foraminiferal Research (2006) 36 (2): 95–107. https://doi.org/10.2113/36.2.95 Article history Received: 12 Jan 2005 Accepted: 27 Nov 2005 First Online: 03 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Charlotte A. Brunner, Jennifer M. Beall, Samuel J. Bentley, Yoko Furukawa; HYPOXIA HOTSPOTS IN THE MISSISSIPPI BIGHT. Journal of Foraminiferal Research 2006;; 36 (2): 95–107. doi: https://doi.org/10.2113/36.2.95 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 proxies of hypoxia indicate apparent low oxygen to hypoxic conditions in several hotspots in the Mississippi Bight. The foraminiferal hypoxia proxies, the Ammonia to Elphidium (A/E) index and the Pseudononion-Epistominella-Buliminella (PEB) index, were tabulated from three sets of core tops collected in 1951–1956. Additionally, the oxygenation history of a site near the Balize delta was evaluated over the past one hundred years based on A/E and PEB indices and size distributions of pyrite framboids in a gravity core dated by 210Pb geochronology.The results from the 1950’s core-top collections show apparent, recurrent low-oxygen to hypoxic bottom water on the inner shelf at hotspot locales seaward of the Mississippi-Alabama barrier islands and the eastern distributaries of the Balize delta. Specifically, the A/E index exceeds 90% on the inner shelf seaward of Horn and Dauphin islands, both of the Mississippi-Alabama barrier islands, and a center between Pass à Loutre and Main Pass of the Balize delta. In partial support of these results are reports of present-day low oxygen to hypoxic concentrations in bottom waters associated with seasonally high surface chlorophyll a and seasonal strengthening of a brackish-water cap at these locales. In contrast, the PEB index in core tops suggests good oxygenation at mid-shelf depths >30 m. The PEB index, size distributions of framboidal pyrite, and other indicators in a gravity core 44 km northeast of Pass à Loutre indicate no clear change in conditions over the past century, constraining the seaward extent of the hotspot near the Balize delta. You do not have access to this content, please speak to your institutional administrator if you feel you should have access." @default.
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- W2000777304 title "HYPOXIA HOTSPOTS IN THE MISSISSIPPI BIGHT" @default.
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