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Reference Points for Vulnerable Fish Species Based on Bioeconomic Age-Structured Models: An Approach for Totoaba macdonaldi

Creator:: Rodríguez-García, Oswaldo Uriel, De Anda-Montañez, Juan Antonio, Valenzuela-Quiñonez, Fausto, Hernández-Flores, Alvaro, Salas-Márquez, Silvia, and María Da-Rocha, José
Abstract:: Management objectives of vulnerable fish species must focus on maintaining healthy population status. Hence, reference points should be constrained to ensure recruitment. We assessed bioeconomic reference points for the totoaba (Totoaba macdonaldi), an endemic fish to the Gulf of California, reaching lengths of 2 m and 25 years. Totoaba fishing...
Resource Type:: Presentation
Full Text:: Presentación de PowerPoint Reference points for vulnerable

FIPs: Their Growth and Performance 2006 to 2016

Creator:: Cannon, James, Sousa, Pedro, and Veiga, Pedro
Abstract:: Retailers and suppliers of seafood are concerned about assured supply and their broader reputation with consumers. In theory, these concerns align with efforts to manage fisheries sustainably and reduce their environmental and social impacts. Hence engaging seafood supply chains more actively in fisheries management should help improve the fisheries in...
Resource Type:: Presentation
Full Text:: * <0.01* n 26 18 17 10 14 FIP start FIP end (or current) s1 s2 s3 s4 s5 s1 s2 s3 s4 s5 18

Confidence of the Trembling Hand: Bayseian Learning with Data Poor Stocks

Creator:: Holzer, Jorge and Qu, Qian
Abstract:: Management of data-poor fisheries typically relies on setting an annual catch limit (ACL) using catch-based methods that are concerned with estimating a sustainable harvest and hinge on the logic that historic catches reflect a level of exploitation the stock can sustain. The resulting harvest control rules routinely set ACLs at...
Resource Type:: Presentation
Full Text:: set the OFL as the average (or median) catch over a reference period, and calculate the ACL according

A Gendered Analysis of the Differential Livelihood Impacts of a Closed Fishing Season on Resource Dependent Stakeholders in Tamil Nadu, India

Creator:: Salim, Shyam, Axelrod, Mark, and Novak Colwell, Julia
Abstract:: This research examines the gendered livelihood implications of fisheries management decisions through an exploration of a seasonal ban on fishing. The 45 day closed fishing season on the Eastern coast of India began in 2001 and applies to mechanized boats. While there is existing research on the impact of the...
Resource Type:: Presentation
Full Text:: Class Male with Network 0.78 (.45)* Reference group 0.40 (.55) Male without Network -0.24 (1.11

Flavouring Fish into Food Security - A Preliminary Assessment of the Integration of Fisheries and Aquaculture into Food and Nutrition Policy Frameworks of East and South Africa

Creator:: López Ríos, Javier and Kurien, John
Abstract:: Fish plays a leading role in nutrition and food security in several African countries, but in many cases this is not reflected in national policies for food security. This study, carried out in the framework of the FAO‑SmartFish Programme of the Indian Ocean Commission funded by the EU, makes a...
Resource Type:: Presentation
Full Text:: 9.0 5 Uganda 33.3 8.2 18 Zimbabwe 3.4 0.8 19 Eritrea 2.5 0.3 20 Ethiopia 1.0 0.1 Seychelles* 0,0

Cooperative Management of Trans-Boundary Fish Stocks: Implications for Tropical Tuna Management in the Pacific Island Region

Creator:: Tokunaga, Kanae
Abstract:: The trans-boundary migration of fish stocks creates spatial externalities, and hence, makes international cooperation beneficial. This study provides a model for the management of straddling and highly migratory fish stocks and examines the relationship between fish migrations and the benefits from cooperation. Previous studies on trans-boundary fish stock management have...
Resource Type:: Presentation
Full Text:: Consensus Building Methods for Ocean Use.” Western and Central Pacific Map Reference: Bell et al

A Management Bind: Evidence for Targeting Weak Stocks

Creator:: DePiper, Geret and Holzer, Jorge
Abstract:: The recent history of fisheries management in New England has seen substantial interannual variability in total allowable catches (TACs), with stocks deemed healthy in one year retroactively identified as overfished soon thereafter. Concurrently, avenues for and examples of coordination between fishermen are increasing in the region, as exemplified by the...
Resource Type:: Presentation
Full Text:: due to a lack of biological reference points associated with the empirical approach, but stock

Stock Proxies in Efficiency Analysis of Fisheries

Creator:: Duy, Nguyen Ngoc and Flaaten, Ola
Abstract:: This study proposes three methods for technical efficiency (TE) estimation using three different fish stock proxy measures while applying the stochastic production frontier (SPF) approach. We apply these methods to two Vietnamese offshore fisheries, gillnet and hand-line, for which measures of stock abundance are unavailable. Based on the assumption of...
Resource Type:: Presentation
Full Text:: methodology Efficiency estimation and SPF 18 19 DEA-based stock index Frontier year 2 Frontier year 2

Modelling a Small-Scale Sea Cucumber Fishery in Yucatan

Creator:: Hernández-Flores, Alvaro
Abstract:: The status of many sea cucumber fisheries in the world is overexploited. Some of the reasons are: an increase in demand from China, the distance of these fisheries to China, and the high rate of fisheries development. Most sea cucumber fisheries are small-scale with a simple management system. To overcome overexploitation,...
Resource Type:: Presentation
Full Text:: of fishing effort (E) per density band. The trajectory of density (D) intersects the reference point

Design Marine Protected Areas (MPAs) for Sea Cucumbers in the Coastal Waters of Sri Lanka

Creator:: Dissanayake, Chamari and Stefansson, Gunnar
Abstract:: This study attempts to design MPAs to manage sea cucumbers in the coastal waters of Sri Lanka. A bio-economic model developed by Stefansson and Rosenberg (2005) was used in this study. In model simulation, area between 080170 - 060 500 N and 810 250 - 820 was considered and this...
Resource Type:: Presentation
Full Text:: 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 5 10 15 20 251 Depth (m) (d

ScholarsArchive@OSU

Reference Points for Vulnerable Fish Species Based on Bioeconomic Age-Structured Models: An Approach for Totoaba macdonaldi

FIPs: Their Growth and Performance 2006 to 2016

Confidence of the Trembling Hand: Bayseian Learning with Data Poor Stocks

A Gendered Analysis of the Differential Livelihood Impacts of a Closed Fishing Season on Resource Dependent Stakeholders in Tamil Nadu, India

Flavouring Fish into Food Security - A Preliminary Assessment of the Integration of Fisheries and Aquaculture into Food and Nutrition Policy Frameworks of East and South Africa

Cooperative Management of Trans-Boundary Fish Stocks: Implications for Tropical Tuna Management in the Pacific Island Region

A Management Bind: Evidence for Targeting Weak Stocks

Stock Proxies in Efficiency Analysis of Fisheries

Modelling a Small-Scale Sea Cucumber Fishery in Yucatan

Design Marine Protected Areas (MPAs) for Sea Cucumbers in the Coastal Waters of Sri Lanka

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