The consequences of misrepresenting feedbacks in coupled human and environmental models

Feedbacks between the ecosystem and economy are important to consider when measuring impacts from a disturbance but often omitted general equilibrium bioeconomic models. These models usually focus on how humans respond ecological change, do not that in adapting changed conditions, can further affect ecosystem. We present framework couples regional computable model with an Ecopath Ecosim food web bidirectional feedbacks two systems. Our uniquely represents comprehensive mapping of entire economy, including recreational commercial fishing, harvest quotas, fish biomass economic system. simulate potential Asian carp invasion Lake Erie's without When there large variations projected levels many target species, differences up 80 percentage points. Results demonstrate need reflect ecosystem; omission these this case may appear be economically trivial yet have consequences. • Bidirectional important. Ignoring leads inaccurate projections. Computable is combined model.