To see what model looks like when run click here
This model is very much like the S Shaped Model with the exception that the decay and growth factors never achieve equilibrium. While exponential growth begins the model, it is gradually overwhelmed by the decay factor. The loss factor depends on a different resource, a resource needed by the growth factor to increase.
Hint: Set DT to 1.
Then build the model :
stock = 10
resource = 650
growth factor = .32
conversion = 1
consumption = stock * conversion
loss fraction = see diagram
outflow = stock * loss fraction
inflow = growth fraction * stock