374


Table C-6. Calculations of values for Model I of water area, fish
and storks (Model in Figure 10).



 STOCKS
 (F) Fish Biomass (estimated from field measurements, see Results Section)
 Minimum 0.01 g d w/m2
 Maximum 0.4 0.5 g d w/m2
 Average 0.2 g d w/m2

 (B) Bird Biomass (Hansen, pers. comm.; Kahl, 1964)

 Initial: (6000 breeding birds/area)(800 g/bird)a = 0.83 mg/m2
 5.8x109 m2/area

 Maximum: (6000 breeding birds + 6000 young)(875 g/bird)b
 5.8x109 m2/area

 = 1.81 mg/m2
 Average: 1.32 mg/m2

 (N) Bird Number (Hansen, pers.comm.)

 Initial: (6000 breeding birds/area) = 1.03 Pcbirds/m2
 5.8x109 m2/area

 Maximum: (12,000 adults & young/area) = 2.06 v birds/m2
 5.8x109 m2/area

 Average: 1.54 p birds/m2

 THRESHOLDS

 (n) Threshold on Bird Breeding

 (6000 birds/area)(896 g/bird)d (6000 birds/area)
 5.8x109 m2/area 5.8x109 m 2/area
 = 0.896 mg/v bird