We study optimal fishery management in an age-structured, bio-economic model where two age classes can be harvested independently. We show that the optimal amount of catch differs with age classes, and we derive conditions under which it is optimal to harvest only one age class. Our main policy...

The Klamath River, draining some 12,000 square miles in southern Oregon and northern California, was once the third largest salmon stream on the West Coast, the life force of Native Americans. The river runs 263 miles from headwaters in Oregon and flows through the Cascades to the Pacific Ocean...

The effects of six common forms of fisheries support are estimated using a bioeconomic model of the global fishery. The results show that all have the potential to provoke overfishing, to lead to fish stocks being overfished, to encourage illegal, unreported or unregulated (IUU) fishing and to...

Danube Delta has suffered damages of habitat and species loss caused by factors, including: construction of dams upstream have degraded obviously flooding regime; creation of agricultural and fishing enclosures which decreased the natural and original surfaces; extending artificial navigation...

While public investment in conservation such as the Conservation Reserve and Wetlands Reserve Programs have improved the environmental state of the lands, they have not provided an institutional means for production and profit expansion for the same acreage. This type of public investment places...

We characterize optimal fishery management in an age-structured, bio-economic model where two age groups are harvested with costly and imperfect selectivity. We show that a system of tradable fishing permits, each allowing to harvest a specific number of fish that differs with age group,...

The illegal exploitation of wild abalone in South Africa has been escalating since 1994, despite increased enforcement, leading to collapse in some sections of its range. South Africa banned all wild abalone fishing in 2008 but controversially reopened it in 2010. This paper formulates a...

Sustainable food policies strive for environmental, healthy, economically just, and humane food production. Their success has ignited legal debates about the Constitution. This is not new. Iconic constitutional law cases examine sustainable food, such as meat in the Slaughter-House Cases (1873),...

This paper examines how fisheries policies affect domestic versus foreign fishing efforts. In line with previous work, the paper finds that policies directly affecting fishing costs (e.g. fuel or input subsidies) are more likely to lead to overfishing than those based on income or fixed assets...

The aim of this paper is to explain under which circumstances using TACs as instrument to manage a fishery along with fishing periods may be interesting from a regulatory point of view. In order to do this, the deterministic analysis of Homans and Wilen (1997)and Anderson (2000) is extended to a...