Reconstructions of Upwelling, Productivity, and Photic Zone Depth in the Eastern Equatorial Pacific Ocean Using Planktonic Foraminiferal Stable Isotopes and Abundances

Research Article| April 01, 2000 RECONSTRUCTIONS OF UPWELLING, PRODUCTIVITY, AND PHOTIC ZONE DEPTH IN THE EASTERN EQUATORIAL PACIFIC OCEAN USING PLANKTONIC FORAMINIFERAL STABLE ISOTOPES AND ABUNDANCES Kristina L. Faul; Kristina L. Faul 1 Earth Sciences Department, University of California, Santa Cruz, CA 95064. K. L. Faul is correspondence author. Search for other works by this author on: GSW Google Scholar A. Christina Ravelo; A. Christina Ravelo 2 Ocean Sciences Department and Institute of Marine Sciences, University of California, Santa Cruz, CA 95064. Search for other works by this author on: GSW Google Scholar M. L. Delaney M. L. Delaney 2 Ocean Sciences Department and Institute of Marine Sciences, University of California, Santa Cruz, CA 95064. Search for other works by this author on: GSW Google Scholar Author and Article Information Kristina L. Faul 1 Earth Sciences Department, University of California, Santa Cruz, CA 95064. A. Christina Ravelo 2 Ocean Sciences Department and Institute of Marine Sciences, University of California, Santa Cruz, CA 95064. M. L. Delaney 2 Ocean Sciences Department and Institute of Marine Sciences, University of California, Santa Cruz, CA 95064. K. L. Faul is correspondence author. Publisher: Cushman Foundation for Foraminiferal Research Received: 18 Mar 1999 Accepted: 08 Dec 1999 First Online: 03 Mar 2017 Online ISSN: 1943-264X Print ISSN: 0096-1191 © 2000 Journal of Foraminiferal Research Journal of Foraminiferal Research (2000) 30 (2): 110–125. https://doi.org/10.2113/0300110 Article history Received: 18 Mar 1999 Accepted: 08 Dec 1999 First Online: 03 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Kristina L. Faul, A. Christina Ravelo, M. L. Delaney; RECONSTRUCTIONS OF UPWELLING, PRODUCTIVITY, AND PHOTIC ZONE DEPTH IN THE EASTERN EQUATORIAL PACIFIC OCEAN USING PLANKTONIC FORAMINIFERAL STABLE ISOTOPES AND ABUNDANCES. Journal of Foraminiferal Research 2000;; 30 (2): 110–125. doi: https://doi.org/10.2113/0300110 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 In the hydrographically complex eastern equatorial Pacific Ocean (EEP), the distinction between changes in productivity and changes in upwelling is important to the study of the causes and implications of changes in paleoproductivity during the Last Glacial Maximum (LGM). We studied seven EEP coretops representing a gradient of increasing primary productivity from west to east. Comparison of the coretop data indicates calcification depth and temperature for each planktonic foraminiferal species may change depending on the vertical position of hydrographic features such as the degree of stratification of the water column, as well as associated biological parameters such as the depths of the photic zone and the chlorophyll maximum. Because these biological parameters are related to primary productivity, calcification depth and temperature patterns for each species are somewhat different for high and low productivity regions in the EEP. We use the relationship between modern surface hydrography and coretop planktonic foraminiferal abundances and isotopic composition to interpret upwelling and productivity changes in the EEP over the last 20,000 years. While data indicate higher primary productivity and lower SSTs, they do not indicate that there was greater upwelling at the location of our site during the LGM relative to present. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.