Journal of Plankton Research, Vol 21, 85-126, Copyright © 1999 by Oxford University Press
M Baird and S Emsley
A plankton population model is developed from literature studies with
mechanistic descriptions of interactions of individual plankton cells.
Interactions considered include diffusion and convection of nutrients to
phytoplankton cell surfaces, light capture by phytoplankton pigment
assemblages, sinking rates of phytoplankton cells, and encounter rates of
predators and prey. Mechanistic formulations are based on individual
species characteristics, obtained from measurements in laboratory
experiments, and are functions of local fluid properties such as
small-scale turbulence and viscosity. Phytoplankton growth is modelled by
analogy to chemical kinetics, and is a function of intracellular nutrient
and energy reserves. Results from laboratory experiments on single-species
populations found in the literature are used to test the applicability of
the functional forms for quantifying interactions of populations of common
marine plankton species. These functional forms are then used to construct
a system of equations describing plankton population dynamics. Simulations
of plankton population dynamics at environmental conditions similar to the
oceanic mixed layer at Bermuda (32
ORIGINAL ARTICLES
Towards a mechanistic model of plankton population dynamics
Ecosystems Analysis and Management Group, Department of Biological Sciences, University of Warwick, Coventry CV4 7AL, UK
N,
65°W) and Ocean Weather Station (OWS) 'India' (59°N,
19°W) are performed, and compared to existing models and field data
sets.
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