Physiological control on carbon isotope fractionation in marine phytoplankton
Abstract ε p) in phytoplankton in response to changing CO2 concentrations. This interest is partly grounded in the use of fossil photosynthetic organism remains as a proxy for past atmospheric CO2 levels. Phytoplankton organic carbon is depleted in 13 C compared to its source because of kinetic fractionation by the enzyme RubisCO during photosynthetic carbon fixation, as well as through physiological pathways upstream of RubisCO. Moreover, other factors such as nutrient limitation, variations in light regime as well as phytoplankton culturing systems and inorganic carbon manipulation approaches may confound the influence of aquatic CO2 concentrations [CO2 ] on ε p ε p/2 ]) and test potential confounding factors. Culturing approaches and methods of carbonate chemistry manipulation were found to best explain the differences in ε p ε p in haptophytes. Extrapolating results from culturing experiments to natural environments and for proxy applications therefore require caution, and it should be carefully considered whether culture methods and experimental conditions are representative of natural environments.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Physiological control on carbon isotope fractionation in marine phytoplankton ; volume:19 ; number:13 ; year:2022 ; pages:3305-3315 ; extent:11
Biogeosciences ; 19, Heft 13 (2022), 3305-3315 (gesamt 11)
- Urheber
- DOI
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10.5194/bg-19-3305-2022
- URN
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urn:nbn:de:101:1-2022072105262293983204
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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15.08.2025, 07:34 MESZ
Datenpartner
Deutsche Nationalbibliothek. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.
Beteiligte
- Brandenburg, Karen M.
- Rost, Björn
- Van de Waal, Dedmer B.
- Hoins, Mirja
- Sluijs, Appy
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