Presentation on theme: "Nicolas Gutierrez, Olaf Jensen, Michael Melnychuk, & Suresh Sethi with Trevor Branch and Daniel Schindler UW School of Aquatic and Fishery Sciences The."— Presentation transcript:
Nicolas Gutierrez, Olaf Jensen, Michael Melnychuk, & Suresh Sethi with Trevor Branch and Daniel Schindler UW School of Aquatic and Fishery Sciences The Global Fisheries Crisis: Ecological, Economic, and Social Dimensions
Outline 1.Status of global fisheries 2.Drivers of fishery development 3.Management options for sustainable fisheries: Catch Shares Co-Management
OLD TARGET NEW TARGET Impacts of fishing
Trends in fishery indicators
development year = catch first reaches 25% of max annual catch Fishery development No trend
Fishing deeper Fishing smaller Harvest better opportunities first
Fishing is a mature industry
Effects of catch share systems Essington 2010, PNAS
Exploitation under different management types Effort control (n=15) TAC only (n=71) TAC with catch shares (n=35) Frequency Europe South Africa Argentina New Zealand Australia US SE coast/Gulf of Mexico US NE coast Canada east coast Canada west coast US west coast US Alaska log of F : F msy ratio TAC with catch shares TAC only Effort control ± s.e.
Giving stakeholders a lasting stake Catch shares align incentives of individual fishermen with management goals Generally work with developed regulatory agencies At the community level, how might incentives of a group of resource users be aligned with management objectives ?
Institutional arrangement where responsibility for resource management is shared between the government and user groups Fisheries Co-Management Modified from Ostrom 2009 Science
Global Review Success Score (SS): Σ Outcomes = 8 ~ 50% with SS 6 n = 121 mean ± SE
Keys for co-management success
Conclusions Many fisheries are overfished or collapsed, but many are healthy or recovered. Pattern of profit-driven fishing evident at a global scale. Commercial fishing is now a mature industry. We can achieve sustainable fisheries with appropriate management including catch shares and co-management.
Acknowledgments Co-authors on Worm et al. 2009: Boris Worm, Ray Hilborn, Julia Baum, Trevor Branch, Jeremy Collie, Chris Costello, Mike Fogarty, Beth Fulton, Jeff Hutchings, Simon Jennings, Heike Lotze, Pamela Mace, Tim McClanahan, Coilin Minto, Steve Palumbi, Ana Parma, Dan Ricard, Andy Rosenberg, Reg Watson, Dirk Zeller Global fishery development data are from the Sea Around Us Project and the Fisheries Economics Research Unit of the University of British Columbia Funding: National Center for Ecological Analysis and Synthesis, Gordon and Betty Moore Foundation, Lenfest Oceans Program, David H. Smith Conservation Research Fellowship, National Science Foundation Graduate Research Fellowship