Measurement of capacity in marine fisheries is an important activity. An economic definition of capacity is the output level corresponding to the tangency between the long-run and short-run average cost curves. A technological-engineering definition is the maximum output per unit of time provided variable inputs are unrestricted. Although cost data...
This study examines productivity change in the Mid-Atlantic surfclam and ocean quahog fishery, which has been managed since 1990 using Individual Transferable Ouotas (ITQ). Productivity change is estimated through a Malmquist index from 1981-2008, capturing change before and after implementation of the quota system. We then decompose the index to...
The Untied States has embarked on a policy path of promoting catch share
programs to manage fisheries. These can include a range of programs, from
community based management arrangements to individual transferable
quota programs (ITQ's). The Mid-Atlantic Surfclam and Ocean Quahog
Fishery has the longest running U.S. ITQ program, which...
Productivity change after transition to an individual transferable quota (ITQ) management system is driven by exit of some vessels, entry of other vessels, and changes in productivity of existing vessels. Generally, it is thought that an ITQ system boosts productivity due to the exit of less productive vessels. However, ITQ...
Interest in ecosystem-based management or the ecosystem-based approach
to fisheries management has rapidly increased on a global basis. Most
options for ecosystem-based management have emphasized some type of
biological and natural conservation or non-use, and minimal attention has
been given to assessing the social and economic ramifications of
ecosystem-based management....
One pressing economic, societal and environmental issue affecting commercial fisheries is the production of undesirable outputs. In fisheries, undesirable outputs often arise because of economic or regulatory discarding of commercial species and/or the incidentally caught or ‘take’ of protected species, such as sea turtles and marine mammals. In fisheries, undesirable...
Cooperatives in the Rights-based Fisheries Management have the potential to overcome some of the limitations of Individual Transferrable Quotas. The New England groundfish sector management, a new regime under which fishermen can voluntarily form sectors with each sector constrained by a total allowable catch or Annual Catch Entitlement (ACE), is...
The objective of this dissertation is to enhance the monitoring of forest ecosystems through the utilization of remotely sensed data to address the exigencies posed by the Anthropocene. On a global scale, rising temperatures and fluctuating precipitation patterns have strained forests and produced shifts in natural disturbance regimes. Additionally, the...
Bacterial blight (Xanthomonas arboricola pv. corylina) (Xac) of hazelnut (Corylus avellana L.) was described first in Oregon in 1915 and is now recognized as a damaging disease of young hazelnut trees worldwide. Stressed hazelnut trees in conditions such as planting on marginal sites, and trees between 1 and 4-years-old are...
A proposed copper mine in Arizona has the potential to be the largest copper producing mine in North America. It is expected to produce over a billion pounds of copper per year, and individually produce more than half of the United State's demand for copper. The operation claims to be...