Spatial-dynamics of hypoxia and fisheries: The case of Gulf of Mexico brown shrimp

Published

Journal Article

© 2014 MRE foundation, Inc. All rights reserved. We analyze the Gulf of Mexico brown shrimp fishery and the potential impacts of a large seasonal area of hypoxia (low dissolved oxygen) that coincides with the peak shrimp season. A spatial-dynamic bioeconomic simulation embeds three biological impacts on shrimp: mortality, growth, and aggregation on hypoxic edges. Hypoxia creates feedbacks in the bioeconomic system, altering catch and effort patterns. System changes propagate over space to affect areas that do not experience hypoxia. Areas that might otherwise be considered controls in a natural experiments framework are contaminated by the ecological disturbance through spatial sorting. Aggregate predictions from simulations are similar to empirical fishery data. Average shrimp size and total landings are negatively correlated, as are hypoxic severity and landings. Shrimp size and hypoxic severity are only weakly negatively correlated. Growth overfishing, which varies with recruitment success and ecological disturbances, is a key mediating effect.

Full Text

Duke Authors

Cited Authors

  • Smith, MD; Asche, F; Bennear, LS; Oglend, A

Published Date

  • January 1, 2014

Published In

Volume / Issue

  • 29 / 2

Start / End Page

  • 111 - 131

International Standard Serial Number (ISSN)

  • 0738-1360

Digital Object Identifier (DOI)

  • 10.1086/676826

Citation Source

  • Scopus