New cell-based model of photosynthesis and photo-acclimation: accumulation and mobilisation of energy reserves in phytoplankton
Ross, O.N.; Geider, R.J. (2009). New cell-based model of photosynthesis and photo-acclimation: accumulation and mobilisation of energy reserves in phytoplankton. Mar. Ecol. Prog. Ser. 383: 53-71. http://dx.doi.org/10.3354/meps07961
In: Marine Ecology Progress Series. Inter-Research: Oldendorf/Luhe. ISSN 0171-8630; e-ISSN 1616-1599, more
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| Keywords |
Aquatic communities > Plankton > Phytoplankton
Chemical reactions > Photochemical reactions > Photosynthesis
Modelling
Skeletonema costatum (Greville) Cleve, 1873 [WoRMS]
Marine/Coastal |
| Author keywords |
Phytoplankton; Photosynthesis; Photo-acclimation; Individual-based;Modelling |
| Abstract |
In this study, we present a new model of acclimation to light under nutrient-replete conditions based on the photo-acclimation model by Geider et al. (1998; Limnol Oceanogr 43:679-694). Rather than being solely carbon (C)-based, the new model employs the cell as the basic unit, which makes it more amenable for application in individual-based (Lagrangian) modelling approaches. The model differentiates between a functional C pool which also contains nitrogen (N) and an energy reserve pool which does not contain N. The cell-specific light-saturated photosynthetic rate is assumed to scale with the size of the functional pool, and the light-limited photosynthetic rate with the cellular chlorophyll content. Through the explicit inclusion of a C (energy) storage pool, an improved regulatory term for the by observations during a light-shift experiment on the diatom Skeletonema costatum. |
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