Using a phytoplankton growth model to predict the fractionation of stable carbon isotopes

Baird, ME; Emsley, SM; Mcglade, JM

Using a phytoplankton growth model to predict the fractionation of stable carbon isotopes

Baird, ME

Emsley, SM Mcglade, JM

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Publication Type:: Journal Article
Citation:: Journal of Plankton Research, 2001, 23 (8), pp. 841 - 848
Issue Date:: 2001-10-02

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Field	Value	Language
dc.contributor.author	Baird, ME https://orcid.org/0000-0003-4955-2298	en_US
dc.contributor.author	Emsley, SM	en_US
dc.contributor.author	Mcglade, JM	en_US
dc.date.issued	2001-10-02	en_US
dc.identifier.citation	Journal of Plankton Research, 2001, 23 (8), pp. 841 - 848	en_US
dc.identifier.issn	0142-7873	en_US
dc.identifier.uri	http://hdl.handle.net/10453/13303
dc.description.abstract	In the preceding paper in this issue, a phytoplankton growth model based on an analogy with chemical kinetics (the CR model) was re-derived, and a comparison made with the growth rate of cultured phytoplankton assemblages extracted from temperate lakes. In this paper, further derivation of the CR model leads to the same model of carbon isotope fractionation used by Rau et al. (Mar. Ecol. Prog. Ser., 133, 275-285, 1996). Both the CR and Rau et al. models are compatible with the observation that isotope fractionation during phytoplankton growth, εp, is proportional to the growth rate, μ, divided by the extracellular carbon concentration, C. The CR model is then used to explain the observation that the initial slope of εp divided by μ/C is a negative linear function of the cellular carbon to surface area ratio of the phytoplankton cell. The CR model applies the same model framework to predict both phytoplankton growth and stable isotope fractionation. The ability of the CR model to predict two measurable phenomena increases its usefulness, and also our confidence in its predictive capabilities.	en_US
dc.relation.ispartof	Journal of Plankton Research	en_US
dc.subject.classification	Marine Biology & Hydrobiology	en_US
dc.title	Using a phytoplankton growth model to predict the fractionation of stable carbon isotopes	en_US
dc.type	Journal Article
utslib.citation.volume	8	en_US
utslib.citation.volume	23	en_US
utslib.for	0602 Ecology	en_US
utslib.for	0608 Zoology	en_US
utslib.for	0704 Fisheries Sciences	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
utslib.copyright.status	closed_access
pubs.issue	8	en_US
pubs.publication-status	Published	en_US
pubs.volume	23	en_US

Abstract:

In the preceding paper in this issue, a phytoplankton growth model based on an analogy with chemical kinetics (the CR model) was re-derived, and a comparison made with the growth rate of cultured phytoplankton assemblages extracted from temperate lakes. In this paper, further derivation of the CR model leads to the same model of carbon isotope fractionation used by Rau et al. (Mar. Ecol. Prog. Ser., 133, 275-285, 1996). Both the CR and Rau et al. models are compatible with the observation that isotope fractionation during phytoplankton growth, εp, is proportional to the growth rate, μ, divided by the extracellular carbon concentration, C. The CR model is then used to explain the observation that the initial slope of εp divided by μ/C is a negative linear function of the cellular carbon to surface area ratio of the phytoplankton cell. The CR model applies the same model framework to predict both phytoplankton growth and stable isotope fractionation. The ability of the CR model to predict two measurable phenomena increases its usefulness, and also our confidence in its predictive capabilities.

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http://hdl.handle.net/10453/13303