Recent studies have analysed valuable compilations of data for the size-scaling of phytoplankton traits, but these cannot be employed directly in most large-scale modelling studies, which typically do not explicitly resolve the relevant trait values. Although some recent large-scale modelling studies resolve species composition and sorting within communities, most do not account for the observed flexible response of phytoplankton communities, such as the dynamic acclimation often observed in laboratory experiments. In order to derive a simple yet flexible model of phytoplankton growth that can be useful for a wide variety of ocean modelling applications, we combine two trade-offs, one for growth and the other for nutrient uptake, under the optimality assumption, i.e. that intracellular resources are dynamically allocated to maximize growth rate. This yields an explicit equation for growth as a function of nutrient concentration and daily averaged irradiance. We furthermore show how with this model effective Monod parameter values depend on both the underlying trait values and environmental conditions. We apply this new model to two contrasting time-series observation sites, including idealized simulations of size diversity. The flexible model responds differently compared with an inflexible control, suggesting that acclimation by individual species could impact models of plankton diversity.
Smith S.L., Pahlow M., Merico A., Acevedo-Trejos E., Sasai Y., Yoshikawa C., Sasaoka K., Fujiki T., Matsumoto K. and Honda M.C. (2016) Flexible phytoplankton functional type (FlexPFT) model: size-scaling of traits and optimal growth. Journal of Plankton Research 38(4): 977-992. 10.1093/plankt/fbv038
@article{Smith2016,
Title = {Flexible phytoplankton functional type (FlexPFT) model: size-scaling of traits and optimal growth},
Author = {Smith, S. Lan and Pahlow, Markus and Merico, Agostino and Acevedo-Trejos, Esteban and Sasai, Yoshikazu and Yoshikawa, Chisato and Sasaoka, Kosei and Fujiki, Tetsuichi and Matsumoto, Kazuhiko and Honda, Makio C.},
Editor = {},
Journal = {Journal of Plankton Research},
Year = {2016},
Pages = {977-992},
Volume = {38},
Doi = {10.1093/plankt/fbv038},
Abstract = {Recent studies have analysed valuable compilations of data for the size-scaling of phytoplankton traits, but these cannot be employed directly in most large-scale modelling studies, which typically do not explicitly resolve the relevant trait values. Although some recent large-scale modelling studies resolve species composition and sorting within communities, most do not account for the observed flexible response of phytoplankton communities, such as the dynamic acclimation often observed in laboratory experiments. In order to derive a simple yet flexible model of phytoplankton growth that can be useful for a wide variety of ocean modelling applications, we combine two trade-offs, one for growth and the other for nutrient uptake, under the optimality assumption, i.e. that intracellular resources are dynamically allocated to maximize growth rate. This yields an explicit equation for growth as a function of nutrient concentration and daily averaged irradiance. We furthermore show how with this model effective Monod parameter values depend on both the underlying trait values and environmental conditions. We apply this new model to two contrasting time-series observation sites, including idealized simulations of size diversity. The flexible model responds differently compared with an inflexible control, suggesting that acclimation by individual species could impact models of plankton diversity.},
}
TY - JOUR
AU - Smith, S. Lan
AU - Pahlow, Markus
AU - Merico, Agostino
AU - Acevedo-Trejos, Esteban
AU - Sasai, Yoshikazu
AU - Yoshikawa, Chisato
AU - Sasaoka, Kosei
AU - Fujiki, Tetsuichi
AU - Matsumoto, Kazuhiko
AU - Honda, Makio C.
TI - Flexible phytoplankton functional type (FlexPFT) model: size-scaling of traits and optimal growth
T2 - Journal of Plankton Research
PY - 2016
SP - 977-992
VL - 38
DO - 10.1093/plankt/fbv038
AB - Recent studies have analysed valuable compilations of data for the size-scaling of phytoplankton traits, but these cannot be employed directly in most large-scale modelling studies, which typically do not explicitly resolve the relevant trait values. Although some recent large-scale modelling studies resolve species composition and sorting within communities, most do not account for the observed flexible response of phytoplankton communities, such as the dynamic acclimation often observed in laboratory experiments. In order to derive a simple yet flexible model of phytoplankton growth that can be useful for a wide variety of ocean modelling applications, we combine two trade-offs, one for growth and the other for nutrient uptake, under the optimality assumption, i.e. that intracellular resources are dynamically allocated to maximize growth rate. This yields an explicit equation for growth as a function of nutrient concentration and daily averaged irradiance. We furthermore show how with this model effective Monod parameter values depend on both the underlying trait values and environmental conditions. We apply this new model to two contrasting time-series observation sites, including idealized simulations of size diversity. The flexible model responds differently compared with an inflexible control, suggesting that acclimation by individual species could impact models of plankton diversity.
ER -
