The Biodiversity Impact Mitigation (BIM) hierarchy provides an overarching conservation framework for bycatch reduction, and more broadly for biodiversity conservation. This framework includes four steps, which are implemented sequentially to: (i) avoid and (ii) minimize impacts; (iii) rehabilitate/restore impacted biodiversity; and (iv), compensate such impacts, usually elsewhere. The first three steps...
The vaquita, a critically endangered marine mammal, is a bycatch to shrimp strawl and gillnet fisheries in the upper Gulf of California. Reducing vaquita bycatch, however, is complex. The fisheries are smaller-scale and major contributors of income and employment to coastal communities. Although tourism is increasingly important, fishing remains an...
This talk will introduce the special session on the Economics of Bycatch. It will provide an overview of the session. It will then discuss in general terms a variety of incentive-based approaches to managing bycatch that give vessels greater flexibility to devise cost-effective solutions of their own making. These include...
This document provides a summary of a Parallel Session presentation held at the IIFET 2016 Scotland conference in July 2016. The registration number and title of the session were 0302: Rethinking the Commons Problem: The Knowledge Externality and Technological Change. The session was organized by Dale Squires. The report includes...
Unilateral conservation of a transboundary resources, notably bycatch species, can lead to production, trade, and conservation leakages, losses in net benefits to society, and, paradoxically, increased rather than the intended decline biodiversity loss. A 2001 time-area closure of a key fishing area for the California-Oregon drift gillnet fleet harvesting swordfish...
Bigeye tunas are bycatch to skipjack tunas when tuna purse seine vessels set their nets on floating aggregator devices (FADs). Current approaches to managing bigeye in both the Eastern Pacific Ocean (EPO) and the Western and Central Pacific Ocean (WCPO) entail permanently closed areas, such as the “correlito” in the...
Joint production of multiple offsets and/or ecosystem services that enter in multiple markets complicates the standard interpretations of baselines, additionality, and the process of stacking. Intuitively, joint production means that the process of providing the multiple offsets and/or ecosystem services is interrelated, and nonjointness means that each offset or ecosystem...
The established of exclusive rights to fish is essential for tuna-Regional Fisheries Management Organizations to prevent overfishing, achieve sustainability, and to realize maximum economic benefits. Exclusive use or property rights may be based on catch, effort, or licenses, and similar systems can be used for bycatch. Unique issues arise compared...
Bycatch reduction policies, traditionally focused on command-and-control at-sea measures, can be reframed to a broader-based biodiversity conservation and ecosystem management strategy. More cost- and ecologically-effective bycatch mitigation measures may directly and more effectively increase impacted populations elsewhere in their geographic range or life cycle. At-sea bycatch reduction faces diminishing returns...
Stronger microeconomic foundations to dynamic renewable resource models lead to rethinking the commons problem. Specifications of technology consistent with microeconomics allow reinterpretating the market failure under open access for common resources, the dynamic economic optimum, and global commons issues in general. The market failure is broader and deeper than previously...