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

doi:10.1029/2007GB002982

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

SAMS UHI

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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 language	English
Article number	n/a
Pages (from-to)	GB1010
Journal	Global Biogeochemical Cycles
Volume	22
Issue number	1
DOIs	https://doi.org/10.1029/2007GB002982
Publication status	Published - 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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@article{8cd0d51813a44ec5aa8d2aee24f4c754,

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

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 (",

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",

author = "Thomalla, {Sandy Jane} and Alex Poulton and Richard Sanders and Robert Turnewitsch and Holligan, {Patrick M.} and Mike Lucas",

note = "Description 3*: Regional variability in the mechanisms by which biominerals and particulate organic carbon (POC) become associated is important in determining the efficient POC export from the surface ocean and effective mineral-ballasting increases with depth. ",

year = "2008",

doi = "10.1029/2007GB002982",

language = "English",

volume = "22",

pages = "GB1010",

journal = "Global Biogeochemical Cycles",

issn = "0886-6236",

publisher = "Wiley-Blackwell",

number = "1",

}

TY - JOUR

T1 - Variable export fluxes and efficiencies for calcite, opal, and organic carbon in the Atlantic Ocean

T2 - A ballast effect in action?

AU - Thomalla, Sandy Jane

AU - Poulton, Alex

AU - Sanders, Richard

AU - Turnewitsch, Robert

AU - Holligan, Patrick M.

AU - Lucas, Mike

N1 - Description 3*: Regional variability in the mechanisms by which biominerals and particulate organic carbon (POC) become associated is important in determining the efficient POC export from the surface ocean and effective mineral-ballasting increases with depth.

PY - 2008

Y1 - 2008

N2 - 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 (

AB - 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 (

KW - Geosciences, Multidisciplinary

KW - Environmental Sciences

KW - EMILIANIA-HUXLEYI

KW - SEA

KW - Meteorology & Atmospheric Sciences

KW - DISSOLUTION

KW - NORTH-ATLANTIC

KW - TH-234

KW - SOUTHERN-OCEAN

KW - BIOGENIC SILICA

KW - COPEPOD GUTS

KW - IN-SITU

KW - PHYTOPLANKTON

U2 - 10.1029/2007GB002982

DO - 10.1029/2007GB002982

M3 - Article

SN - 0886-6236

VL - 22

SP - GB1010

JO - Global Biogeochemical Cycles

JF - Global Biogeochemical Cycles

IS - 1

M1 - n/a

ER -

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

Abstract

Keywords

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