QUANTIFICATION AND SIMULATION OF MODELS

 The expansion and contraction of wetlands in southwest

 Florida was simulated using topographic and hydrologic

 information and the monthly record of rainfall in the area

 for the 25-yr period from June 1950 through May 1975.

 Seasonally and annually varying surface water area was

 simulated under two conditions: the present (postdrainage)

 condition (1975), as if the present drainage works of the

 area existed for the entire 25-yr period; and the primitive

 (predrainage) condition (circa 1900), as if the area were

 in its pristine state for the entire 25-yr period. Results

 of the water model were used to develop sinewaves

 approximating the seasonal patterns of expanding and

 contracting water area. The sinewaves became the forcing

 functions of two simple analog models (Models I and II) of

 water area, fish, and Wood Storks. The 25-yr monthly

 digital output of the water model was used as the forcing

 function of a digital model of water area, fish, and Wood

 Storks (Model III) that incorporated the demographic

 structure of the Wood Stork population.

 The analog models were developed to test basic

characteristics of the model in response to different

averages and ranges of an oscillating forcing function

representing seasonal variation in water area. The digital

 250