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The function calulates the catchment effort in the reef-fishy example of GOM dataset (Fenichel and Abbott, 2014).
effort(s,Z)
stock
parameter vector
catchment effort values
This effort function is adopted in GOM dataset.
GOM
Fenichel, Eli P. and Joshua K. Abbott. (2014) "Natural Capital: From Metaphor to Measurement." Journal of the Association of Environmental Economists. 1(1/2):1-27.