Calculating impacts of exogenous output changes: application of a social accounting matrix (SAM) model to Alaska fisheries

An integrated model for marine fishery management in the Pearl River Estuary: Linking socio-economic systems and ecosystems

“…Conversely, fishery economists try to evaluate the economics and distributional effects on fishing communities and related industries by linking regional economic models with marine fisheries. Regional economic impacts of fisheries have often been analysed using linear models [10], such as Input-Output (IO) models [11][12][13][14][15][16], the Social Accounting Matrix (SAM) [17][18][19][20][21][22], and non-linear models, such as the Computable General Equilibrium (CGE) model [23][24][25][26]. However, fishery regional economics models work in an isolated manner and do not allow the dynamic flow of feedback from the ecological system to the socio-economics system.…”

Net Economic Impacts of Recent Alaska Salmon Fishery Failures and Federal Relief

“…To overcome this weakness, some studies (e.g., Miller and Blair 2009:593-668;Tanjuakio et al 1996;Steinback 2004;Seung and Waters 2013;Seung 2014) use an "adjusted" demand-driven model to compute the economic impacts of an exogenous change in productive capacity; this model is adjusted in the sense that it is run with (1) changes in output being treated as final demand shocks and (2) regional purchase coefficients (RPCs) for all of the directly impacted industries being set equal to zero. The present study adopts this approach to calculate the impacts of the salmon fishery failures.…”

“…This section relies heavily on Seung and Waters (2013). The Alaska SAM model is presented mathematically in this section, and its conceptual structure is shown in Table A.1 in the appendix.…”

Ecosystem-based fisheries management in the Pearl River Delta: Applying a computable general equilibrium model

“…), the approach cannot capture the nonlinear interactions between socio-economic systems and ecosystems. Since the prices are fixed in a linear system, substitution of goods and services is not allowed [13]. Thus, the optimal fishing intensity for maximum social welfare cannot be obtained using the linear model.…”