Economic impacts of Papahānaumokuākea Marine National Monument expansion on the Hawaii longline fishery

The expansion of the Papahānaumokuākea Marine National Monument (PMNM) in 2016 led to significant economic impacts on Hawaii's longline fishery. Specifically, catch per unit effort (CPUE) decreased by 7%, while revenue per trip dropped by 9%, amounting to a loss of $3.5 million over the first 16 months post-expansion. The study used difference-in-differences models with fixed effects to assess these impacts on vessels that previously fished extensively within the Monument Expanded Area (MEA). The findings suggest that fishers, displaced from traditional grounds, are still adapting to new fishing areas, leading to reduced efficiency and productivity.

Chan, H. L. (2020). Economic impacts of Papahānaumokuākea Marine National Monument expansion on the Hawaii longline fishery. Marine Policy, 115, 103869. https://doi.org/10.1016/j.marpol.2020.103869