Skip to main content
Skip to main content

COAPS Virtual Library (Publications)

Search within Results:
Display Options:

Select All    Deselect All
 |   | 
Details
   print
  Record Links
Author (up) Krause, J.W.; Stukel, M.R.; Taylor, A.G.; Taniguchi, D.A.A.; De Verneil, A.; Landry, M.R. url  doi
openurl 
  Title Net biogenic silica production and the contribution of diatoms to new production and organic matter export in the Costa Rica Dome ecosystem Type $loc['typeJournal Article']
  Year 2016 Publication Journal of Plankton Research Abbreviated Journal J Plankton Res  
  Volume 38 Issue 2 Pages 216-229  
  Keywords biogenic silica production; diatom; new production; vertical flux  
  Abstract We determined the net rate of biogenic silica (bSiO2) production and estimated the diatom contribution to new production and organic matter export in the Costa Rica Dome during summer 2010. The shallow thermocline significantly reduces bSiO2 dissolution rates below the mixed layer, leading to significant enhancement of bSiO2 relative to organic matter (silicate-pump condition). This may explain why deep export of bSiO2 in this region is elevated by an order of magnitude relative to comparable systems. Diatom carbon, relative to autotrophic carbon, was low (<3%); however, the contribution of diatoms to new production averaged 3 and 13% using independent approaches. The 4-old discrepancy between methods may be explained by a low average C:Si ratio ( approximately 1.4) for the net produced diatom C relative to the net produced bSiO2. We speculate that this low production ratio is not the result of reduced C, but may arise from a significant contribution of non-diatom silicifying organisms to bSiO2 production. The contribution of diatoms to organic matter export was minor (5.7%). These results, and those of the broader project, suggest substantial food-web transformation of diatom organic matter in the euphotic zone, which creates enriched bSiO2 relative to organic matter within the exported material.  
  Address Scripps Institution of Oceanography , 9500 Gilman Dr., La Jolla, CA 92093-0227 , USA  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0142-7873 ISBN Medium  
  Area Expedition Conference  
  Funding PMID:27275026; PMCID:PMC4889982 Approved $loc['no']  
  Call Number COAPS @ mfield @ Serial 105  
Permanent link to this record
Select All    Deselect All
 |   | 
Details
   print

Save Citations:
Export Records:

2000 Levy Avenue
Building A, Suite 292
Tallahassee, FL 32306-2741
Phone: (850) 644-4581
Fax: (850) 644-4841
contact@coaps.fsu.edu

© 2020 Center for Ocean-Atmospheric Prediction Studies (COAPS), Florida State University

Center for Ocean-Atmospheric Prediction Studies (COAPS)