Chapter 5 . Applications 0' Adaptive Agents
83
Tab. 5.2. EDE and ER applied for 7-day-ahead predictions of Microcystis in Fig.
5.4.
dNdt = A(t) * ( PHOT - RESP ) - A(t) >I< ( COP + CLAD ) * 0.0001 -
A(t) * (e 15 )
PHOT = [a I b * T) * ( 0.025 * LI ( c + 0.025 * L »
* (PI A(t) I( d I X + P I X + d I A(t) + PI A(t»)]
X
= 5.76 * A(t) 1\ 0.41
RESP = [( 0.057 I b * T ) + 0.3 * PHOT]
where A =
Microcystis biomass p,g/l,
PHOT=photosynthesis,
RESP=respiration,
L=photosynthetic active light, P=P04-P phosphate, X=auxiliary tenn,
COP=biomass of crustacea copepoda mg/l, CLAD=biomass of crustacea
cladocera mg/l, T = water temperature,
a to e = constant parameters evolved to optimal values or functions
IF P >= 126 AND P <= 81.7 p,g/l
THEN Microcystis = 500,000 cells/mI
ELSE IFpH >= 9.72 THEN Microcystis = 500,000 cells/ml
EXCEPT IF T <= 19.5 "C AND T >= 5.67 °C
THEN Microcystis = 3,000 cells/ml
ELSE IF NIP >= 47.2 AND NIP <= 55.2
THEN Microcystis = 0 cells/ml
ELSE IF S >= 95.5 cm THEN Microcystis = 3.5 cells/ml
EXCEPT IF T >= 5.67 "C AND T <= 15.7 °C
THEN Microcystis = 0 cells/mI
OR IF N >= 1,110 p,g/l THEN Microcystis = 0 cells/mI
IF P >= 15.6 p,gli AND P <= 116 p,gli THEN
Microcystis = 100,000 cells/mI
EXCEPT IF T >= 26.7 "C THEN Microcystis = 500,000 cells/ml
EXCEPT IF S <= 160cm then Microcystis = 100,000 cells/mI
ELSE IF N >= 757 p,g/l AND N <= 1,690 p,~1
THEN Microcystis = 0 cells
EXCEPT IF T >= 15.7 "C AND T <= 26.7 °C
THEN Microcystis = 3,000 cells/mI
EXCEPT IF P <= 15.6 p,gli THEN Microcystis = 0 cells/ml
ELSEIFT>= 15.7 AND T<= 26.7°C
THEN Microcystis = 100,000 cells/ml
EXCEPT IF S <= 160 cm AND S >= 74.4 cm
THEN Microcystis = 0 cells/ml
ELSE IF T >= 5.67 °C AND T <= 15.7 °C
THEN Microcystis = 3,000 cells/mI
ELSE Microcystis = 100,000 cells/mI.
where S = Secchi Depth, T = water temperature, N = N03-N Nitrate