APPENDIX B
 TRIGONOMETRIC FUNCTIONS USED TO GENERATE
 SEASONALLY-VARYING WATER AREA AND SOLAR RADIATION
 IN MODELS I AND II OF WATER AREA, FISH, AND STORKS

 In Figure B-1 is a diagram of the sinewave function

for water area under the two conditions, primitive (un-

drained) and present (drained). Also given is the analog

patching diagram with potentiometers used to regulate

amplitude, frequency, and average indicated. Frequency was

the same for all conditions but amplitude- and mean were

adjusted to approximate nine drainage conditions, including

primitive and present. Values used to approximate the nine

conditions (c and j are the same) are given in Table B-1.

 Figure B-2 shows the cosine function used to generate

seasonally-varying solar radiation and includes the analog

patching diagram.