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Economics & Social Sciences Research Program

Identifying Channels of Economic Impacts: An Inter-regional Structural Path Analysis for Alaska Fisheries

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Much of the labor income generated in many Alaska industries flows out of the state because a large share of workers in many Alaska industries, including fishing, are nonresidents.  Additionally, a large amount of capital used in Alaska seafood industries is owned by nonresidents, and much of the capital income from these industries leaks to other states.  Many of the goods and services used by consumers and seafood and non-seafood industries in Alaska are imported from other states.  Therefore, there are additional impacts from exogenous shocks to fisheries or other industries in Alaska affecting those other states that are not captured in a single-region economic impact model.

Several previous studies have used an inter-regional or multi-regional economic impact model such as a social accounting matrix (SAM) model to capture these additional impacts of Alaska fisheries and calculated the inter- or multi-regional multipliers.  However, the multipliers from this model measure only total economic impacts, failing to provide fishery managers with the information on how and along what channels these total economic impacts are generated and transmitted throughout the regions.  A structural path analysis (SPA) is a useful tool to investigate the channels through which the initial policy shocks or exogenous shocks to a sector (origin) are transmitted to, and generate effects on, other sectors (destination sectors) of an economy. 

Our present study extends a previous study where an SPA was conducted for a single region of Alaska  and conducts an inter-regional structural path analysis (IRSPA) for Alaska and the rest of United States within an inter-regional SAM framework.  Results from the IRSPA will provide fishery managers with detailed information on the channels of economic impacts generated between the two regions.

By Chang Seung

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