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• 1. [Article] Geographic Concentration in the Northeast U.S. Sea Scallop Fishery

  New Bedford’s share of Atlantic sea scallops landings and revenues increased from 44% in 1996 to 67% in 2013. Explanations for industrial agglomerations often focus on the relative importance of natural ...

  Citation × Citation Citation Abstract Copy Title: Geographic Concentration in the Northeast U.S. Sea Scallop Fishery Author: Carr-Harris, Andrew, Speir, Cameron, Lee, Min-Yang New Bedford’s share of Atlantic sea scallops landings and revenues increased from 44% in 1996 to 67% in 2013. Explanations for industrial agglomerations often focus on the relative importance of natural advantage and economies of scale or scope. We use the absolute and relative Theil indices of disproportionality to examine changes in geographic concentration of landings in this fishery from 1996-2013. During this time, the scallop stock was rebuilt from an overfished condition, large areas of the ocean were closed to fishing, portions of those areas were re-opened to scallop fishing, and a formal rotational management program was put into place. The relative Theil index shows that the geographic distribution of sea scallop landings has grown increasingly similar to the geographic distribution of other federally managed fisheries during this time period, although there were 3 brief reversals of this trend. The absolute Theil indicates that the geographic distribution of landings was characterized by a relatively stable period through 1999, a period of accelerating divergence from the 1996 baseline, abrupt reversion to a new steady state from 2007-2012, and another abrupt change in 2013. Because the Theil disproportionality measures are aspatial, we conduct Exploratory Spatial Data Analysis (ESDA) to examine global and local indicators of spatial association such as hot spots, cold spots, and negative spatial autocorrelation. Title: Geographic Concentration in the Northeast U.S. Sea Scallop Fishery Author: Carr-Harris, Andrew, Speir, Cameron, Lee, Min-Yang New Bedford’s share of Atlantic sea scallops landings and revenues increased from 44% in 1996 to 67% in 2013. Explanations for industrial agglomerations often focus on the relative importance of natural advantage and economies of scale or scope. We use the absolute and relative Theil indices of disproportionality to examine changes in geographic concentration of landings in this fishery from 1996-2013. During this time, the scallop stock was rebuilt from an overfished condition, large areas of the ocean were closed to fishing, portions of those areas were re-opened to scallop fishing, and a formal rotational management program was put into place. The relative Theil index shows that the geographic distribution of sea scallop landings has grown increasingly similar to the geographic distribution of other federally managed fisheries during this time period, although there were 3 brief reversals of this trend. The absolute Theil indicates that the geographic distribution of landings was characterized by a relatively stable period through 1999, a period of accelerating divergence from the 1996 baseline, abrupt reversion to a new steady state from 2007-2012, and another abrupt change in 2013. Because the Theil disproportionality measures are aspatial, we conduct Exploratory Spatial Data Analysis (ESDA) to examine global and local indicators of spatial association such as hot spots, cold spots, and negative spatial autocorrelation. Close