Table 3. Explanation of water area, fish, and Wood Stork Model I.


Forcing functions, or environmental /W
factors of importance to the system, AREA
are represented by circles. Both A
sun and water area vary seasonally. SUN
 S




Tanks are the symbols for stocks,
or storage, within the system. FISH
Flows of energy, water, or other F
materials are shown by connecting
lines. Arrows indicate a one-way
force. There is an energy cost
associated with all transactions.
The energy loss is accounted for
with heat sink on flow lines
and other symbols.