60
Algae and Nutrients: Uptake and Utilization of Limiting ...
ters, an attempt has been made to locate realistic parameter values for the
typical phytoplankton species in terms of the medians of parameter distributions assembled from an (admittedly incomplete) collection of literature
data (Tables AIO.I-AIO.4). The generalized phytoplankton model developed in this chapter will form the basis for elaborating a more complete
representation of pelagic nutrient cycles, where also the role of zooplankton as consumers of autotrophic biomass and regenerators of nutrients is
taken into consideration.
3.9 Symbols, Definitions, and Units
Symbol Definition
Dimension
a
Specific P uptake affinity
I (mg Cr' day"'
a'
Maximum specific P uptake affinity
I (mg cr' day"'
a~J
Maximal N uptake affinity in species i
I (mg Cr' day"'
a'p,!
Maximal P uptake affinity in species i
I (mg cr' day"'
a MJ
Specific uptake affinity for element R in species i
I (mg Cr' day"'
a~J
Maximal uptake affinity for element R in species i
I (mg Cr' day·'
a" MJ
Equilibrium uptake affinity for element R in species i
I (mg cr' day"'
rp
Chlorophyll:carbon ratio
(l1g chla) (mg Cr'
rp'
Chla:C ratio at maximum growth rate
(I1S chla) (mg cr'
K'
Monod half-saturation parameter
(Ilg P) r'
K'p.,
Monod parameter for P-limited growthin species i
(Ilg P) r'
K'N,;
Monod parameter for N-limited growth in species i
(Ilg N) r'
K'R.;
Monod parameter for R-limited growth in species i
(I1S R) r'
-K ..
Michaelis-Menten half-saturation parameter
(Ilg P) r'
P
Specific growth rate
day"
J.Io
Maintenance growth rate
day"
p'
Asymptotic growth rate at infinite P quota
day"'
p"
Maximum growth rate
day"
PP.,
P-limited growth rate in species i
day"
PN.I
N-limited growth rate in species i
day"'
PR.i
Element R-limited growth rate in species i
day"'
1·l'R,i
Asymptotic growth rate for R-limited growth in species i
day"
Q
Cellular P quota
(l1g P) (ms Cr'