Spatial-dynamics of hypoxia and fisheries: The case of Gulf of Mexico brown shrimp
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© 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.
Published Version (Please cite this version)10.1086/676826
Publication InfoAsche, Frank; Bennear, Lori Snyder; Oglend, A; & Smith, Martin D (2014). Spatial-dynamics of hypoxia and fisheries: The case of Gulf of Mexico brown shrimp. Marine Resource Economics, 29(2). pp. 111-131. 10.1086/676826. Retrieved from http://hdl.handle.net/10161/13519.
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Juli Plant Grainger Associate Professor
My research focuses on evaluating environmental policies and improving methods and techniques for conducting these evaluations. While the field of policy evaluation is a broad one, my specific niche is in bringing rigorous quantitative methods to evaluate environmental policy innovations along four dimensions. (1) Evaluating the effectiveness of environmental policies and programs. This line of research uses statistical analysis to estimate the extent to which environmenta
Professor of Environmental Economics in the
Smith studies the economics of the oceans, including fisheries, marine ecosystems, seafood markets, and coastal climate adaptation. He has written on a range of policy-relevant topics, including economics of marine reserves, seasonal closures in fisheries, ecosystem-based management, catch shares, nutrient pollution, aquaculture, genetically modified foods, the global seafood trade, organic agriculture, coastal property markets, and coastal responses to climate change. He is best known for id
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