Smith, SL, Merico, Agostino, Hohn, Sönke and Brandt, G (2014) Sizing-up nutrient uptake kinetics: combining a physiological trade-off with size-scaling of phytoplankton traits. Marine Ecology Progress Series, 511 . pp. 33-39. DOI https://doi.org/10.3354/meps10903.

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Abstract

We present a new model for the kinetics of nutrient uptake by phytoplankton, which we derive by combining existing models: (1) a size-based modeling framework that accounts for the effects of extra-cellular diffusive limitation, and (2) a model of optimal resource allocation that maximizes uptake rate subject to a physiological trade-off. We show that the new model, unlike either of its pre-existing components, is able to reproduce the observed range of variation in the half-saturation constant for nitrate uptake as a function of both ambient nitrate concentration and cell size. Our results illustrate that the combination of mechanistic trait-based modeling and physiological trade-offs can greatly advance our understanding of plankton ecology.

Document Type: Article
Research affiliation: Theoretical Ecology and Modelling > Systems Ecology
Affiliations > Not ZMT
Refereed: Yes
Open Access Journal?: No
DOI etc.: https://doi.org/10.3354/meps10903
ISSN: 0171-8630
Date Deposited: 12 Aug 2019 17:49
Last Modified: 01 Oct 2020 12:59
URI: http://cris.leibniz-zmt.de/id/eprint/2585

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