The harvest technology of several multispecies fisheries has been explained in the recent literature using dual-based models. These studies are useful for explaining rent dissipation, estimating input and output elasticities, as well as describing other aspects of fisherman behavior. Most of these analyses have assumed that inputs are fixed at...
Stock assessment techniques currently used in the United States are extremely costly to implement, involve significant data requirements, and are inaccessible to all but a few stock assessment scientists. A systematic decrease in fishery yields and the designation of several species as overfished on the west coast of the United...
Many of the tangible benefits of catch share programs (e.g., reducing overcapacity) are dependent on the trading of shares. Additional trading-related questions (such as whether landings will change port or be concentrated geographically) are also important to the overall evaluation of a fishery, but are often asked only during post-implementation...
Fishing activities within the Galapagos Marine Reserve (GMR) are restricted to small-scale levels by national law. The fishing sector has relied on just two fisheries, sea cucumber and spiny lobster, and a
strong Asian export market. Despite a series of input and output controls and a co-management scheme, stocks have...
The saltwater aquarium hobby has increased dramatically in the last decade due to improvements in the technologies and knowledge needed to sustain mini-reef ecosystems. With this increased demand comes increased pressure on natural reef ecosystems that supply the vast majority of the live organisms for the commercial market. To combat...
The 2002 World Summit on Sustainable Development saw governments
around the world undertake to maintain or restore stocks to levels that can
produce the maximum sustainable yield with the aim of achieving these
goals for depleted stocks on an urgent basis and where possible not later
than 2015. However, progress...
Ecological and economic tradeoffs of proposed management actions were assessed using the Ecopath with Ecosim (EwE) and Ecospace software. The model has 70 biomass pools (e.g., detritus, primary producers, invertebrates, fish, dolphins, sea birds), including multiple age-classes of key species. After mass-balancing, the model was driven using observed fishing mortality...
During the first three years (2007-2009) of the Gulf of Mexico red snapper IFQ program most quota lease trades were local, involving fishers that lived in the same communities. In 2010, the red snapper quota lease market changed as more IFQ participants began trading quota with fishers from different regions...
The role of discounting in determining the optimal harvest of natural resources has been extensively debated in the economic and natural resources literature. Differing approaches to discounting to address sustainability and intergenerational equity issues have the potential to significantly affect the allocation of resources between harvesting and conservation for this...
Scanner data that’s collected on consumer purchases falls into two main groups: point-of-sale scanner data and household-based scanner data. Point-of-sale scanner data can identify the products that are purchased, the quantity sold, and the price of the product. Household scanner data comes from a sample of survey participants that scan...