INTERANNUAL VARIATION OF MARSH FORAMINIFERAL ASSEMBLAGES (BOMBAY HOOK NATIONAL WILDLIFE REFUGE, SMYRNA, DE): DO FORAMINIFERAL ASSEMBLAGES HAVE A MEMORY?

Abstract

Research Article| April 01, 2002 INTERANNUAL VARIATION OF MARSH FORAMINIFERAL ASSEMBLAGES (BOMBAY HOOK NATIONAL WILDLIFE REFUGE, SMYRNA, DE): DO FORAMINIFERAL ASSEMBLAGES HAVE A MEMORY? Scott P. Hippensteel; Scott P. Hippensteel Department of Geology, University of Delaware, Newark, DE 19716 U.S.A. 1Present address: Department of Geography and Earth Sciences, 9201 University City Boulevard, University of North Carolina, Charlotte, NC 28223-0001. Search for other works by this author on: GSW Google Scholar Ronald E. Martin; Ronald E. Martin 2 Department of Geology, University of Delaware, Newark, DE 19716 U.S.A. 2Corresponding author: Phone: 302-831-6755; Fax: 302-831-4158; E-mail: Daddy@Strauss.Udel.Edu Search for other works by this author on: GSW Google Scholar Daria Nikitina; Daria Nikitina Department of Geology, University of Delaware, Newark, DE 19716 U.S.A. Search for other works by this author on: GSW Google Scholar James E. Pizzuto James E. Pizzuto Department of Geology, University of Delaware, Newark, DE 19716 U.S.A. Search for other works by this author on: GSW Google Scholar Author and Article Information Scott P. Hippensteel 1Present address: Department of Geography and Earth Sciences, 9201 University City Boulevard, University of North Carolina, Charlotte, NC 28223-0001. Department of Geology, University of Delaware, Newark, DE 19716 U.S.A. Ronald E. Martin 2 Department of Geology, University of Delaware, Newark, DE 19716 U.S.A. Daria Nikitina Department of Geology, University of Delaware, Newark, DE 19716 U.S.A. James E. Pizzuto Department of Geology, University of Delaware, Newark, DE 19716 U.S.A. 2Corresponding author: Phone: 302-831-6755; Fax: 302-831-4158; E-mail: Daddy@Strauss.Udel.Edu Publisher: Cushman Foundation for Foraminiferal Research Received: 12 Dec 2000 Accepted: 07 May 2001 First Online: 03 Mar 2017 Online ISSN: 1943-264X Print ISSN: 0096-1191 © 2002 Journal of Foraminiferal Research Journal of Foraminiferal Research (2002) 32 (2): 97–109. https://doi.org/10.2113/0320097 Article history Received: 12 Dec 2000 Accepted: 07 May 2001 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 Scott P. Hippensteel, Ronald E. Martin, Daria Nikitina, James E. Pizzuto; INTERANNUAL VARIATION OF MARSH FORAMINIFERAL ASSEMBLAGES (BOMBAY HOOK NATIONAL WILDLIFE REFUGE, SMYRNA, DE): DO FORAMINIFERAL ASSEMBLAGES HAVE A MEMORY?. Journal of Foraminiferal Research 2002;; 32 (2): 97–109. doi: https://doi.org/10.2113/0320097 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 Seasonal reproduction and preservation of foraminifera were monitored for three years at Bombay Hook National Wildlife Refuge (Smyrna, DE). Cluster analysis of “seasonally artificially time-averaged” (SATA) assemblages indicates that assemblages reflect the most recent test inputs, and that test inputs record subtle variations in porewater chemistry related to rates of sulfate reduction, pyrite oxidation, and vertical differentiation of geochemical gradients. Changes in geochemical gradients are caused by interannual variation of rainfall: more rainfall damps pyrite oxidation and weakens geochemical gradients, whereas less rainfall allows more pyrite oxidation and strengthens vertical gradients. Geochemical overprinting of assemblages related to rainfall tended to occur during the summer and early fall. Therefore, as assemblages pass into the historical layer, they may have a “memory” of the most recent test inputs and environmental conditions. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.