Stable Oxygen Isotope Composition Is Biased by Shell Calcification Intensity in Planktonic Foraminifera
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F20%3A10422875" target="_blank" >RIV/00216208:11310/20:10422875 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=dQ_AOdChqF" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=dQ_AOdChqF</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1029/2020PA003941" target="_blank" >10.1029/2020PA003941</a>
Alternative languages
Result language
angličtina
Original language name
Stable Oxygen Isotope Composition Is Biased by Shell Calcification Intensity in Planktonic Foraminifera
Original language description
Planktonic Foraminifera are widely used for environmental reconstructions through measurements of their shell's geochemical characteristics, including its stable oxygen and carbon isotope composition. Using these parameters as unbiased proxies requires a firm knowledge of all potential confounding factors influencing foraminiferal shell geochemistry. One such parameter is the shell calcification intensity (shell weight normalized for shell size) that may influence the shell delta O-18 value either bioenergetically (by reducing energy available and required for equilibrium isotope fractionation during faster calcification) or kinetically (by influencing calcification depth through the shell's density contrast with seawater). Specimens from the Globigerinoides ruber/elongatus complex from a sediment trap in the North Atlantic have been used to quantify the influence of shell calcification intensity on shell delta O-18 values. Shell calcification intensity was found to have a significant effect on the shell stable oxygen isotope composition in all species. Through model fitting, it is suggested that the effect size may be in a range of 1 parts per thousand to 2 parts per thousand (depending on species, depth migration, and local oceanographic conditions). We show that the confounding effect of shell calcification intensity on stable oxygen isotope composition can be of importance, depending on the anticipated precision of the derived reconstructions. A framework is provided to quantify this effect in future studies.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10505 - Geology
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Paleoceanography and Paleoclimatology
ISSN
2572-4517
e-ISSN
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Volume of the periodical
35
Issue of the periodical within the volume
11
Country of publishing house
US - UNITED STATES
Number of pages
20
Pages from-to
e2020PA003941
UT code for WoS article
000595926100007
EID of the result in the Scopus database
2-s2.0-85096453641