Variable export fluxes and efficiencies for calcite, opal, and organic carbon in the Atlantic Ocean: A ballast effect in action?

Sandy Jane Thomalla, Alex Poulton, Richard Sanders, Robert Turnewitsch, Patrick M. Holligan, Mike Lucas

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Latitudinal variability in export fluxes and efficiencies (ThE) of calcite, opal, and particulate organic carbon (POC) were examined during a basin-scale Atlantic Ocean cruise. A clear relationship between integrated euphotic zone POC and calcite export combined with similarities in average ThE for calcite (0.26), opal (0.31), and POC (0.29) implies a potential association between biomineral and POC export. However, such similarity conceals substantial uncorrelated variability when ThE values are compared on regional scales, with ThE of POC often being much higher than that of calcite or opal. High-euphotic zone ThE for POC (0.3-0.4) relative to that found in deep sea sediment traps (
Original languageEnglish
Article numbern/a
Pages (from-to)GB1010
JournalGlobal Biogeochemical Cycles
Volume22
Issue number1
DOIs
Publication statusPublished - 2008

Keywords

  • Geosciences, Multidisciplinary
  • Environmental Sciences
  • EMILIANIA-HUXLEYI
  • SEA
  • Meteorology & Atmospheric Sciences
  • DISSOLUTION
  • NORTH-ATLANTIC
  • TH-234
  • SOUTHERN-OCEAN
  • BIOGENIC SILICA
  • COPEPOD GUTS
  • IN-SITU
  • PHYTOPLANKTON

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