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Bio-Economic Modeling and Data Availability in Fisheries Management: Stakeholder Meeting Insights

This conference report examines socio-economic aspects of fisheries management discussed during the DEEPFISHMAN stakeholder meeting held in Brussels on June 29-30, 2009. It emphasizes sustainability, profitability, employment, market dynamics, and management costs while highlighting the need for robust bio-economic models applicable to various case studies. The report identifies available data requirements, including stocks, harvest, costs, and revenues, while differentiating between macroeconomic and microeconomic data. Several case studies, from single species fisheries to artisanal fisheries, are analyzed to inform future management measures.

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Bio-Economic Modeling and Data Availability in Fisheries Management: Stakeholder Meeting Insights

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  1. DEEPFISHMANData and data availability Stakeholder’s meeting Bruxelles 29-30 June 2009 Institute of Economic Studies Gunnar Haraldsson

  2. Socio-economic aspects - What are we looking at? • Sustainability (long-term) • Profitability/Social benefits • Employment • Markets • Cost of management

  3. The data • Construct a general bio-economic model applicable to each case study for which there exist appropriate data. Data requirements • 1. Stocks • 2. Harvest • 3. Costs • 4. Revenue • 5. Various macroeconomic data • 6. Various microeconomic data

  4. Basic characteristics • The model should be • 1. Dynamic • 2. Stochastic • 3. Capable of incorporating various management regimes (which?)

  5. What data is ‘easily’ available • Macroeconomic data (economic and social data) • Unemployment rates • Wage developments • ...

  6. What data is not so easily available? • Microeconomic data • Cost data (fuel, labor, gear, effort indices) • Prices • Soft data • Institutional setting • Fisheries management measures (official/unofficial)

  7. Case studies • Case study 1 – Directed single species fisheries:- • Highly vulnerable - orange roughy in Namibian waters – NatMIRC • Highly vulnerable - orange roughy in ICES VI &VII – MI • Less vulnerable - blue ling (Molva dypterygia) in Vb,VI ,VII – Cefas  • Case study 2 – Mixed demersal fishery:- • French trawl fishery for roundnose grenadier (Coryphaenoides rupestris), black scabbardfish, deep-water sharks in Vb, VI and VII – IFREMER • Case study 3 – Artisanal fisheries : • Vulnerable : • -Fisheries for red (blackspot) seabream in the Gibraltar Strait and Bay of Biscay– IEO • -Fisheries for red (blackspot) seabream in the eastern Mediterranean– HCMR • Less vulnerable : • -Portuguese fishery for black scabbardfish in IX –IPIMAR • Case study 4 – Data rich stock – NE Atlantic redfish -IMR • Case study 5 – Data- rich stock - Greenland halibut stocks in the NAFO area – IEO

  8. Case studies • We can do a socio-economic description of each case • Bioeconomic modeling for selected cases • We rely heavily on receiving data from case study leaders and on collaboration with our colleagues in the scientific community • Stakeholder’s participation is very important

  9. An example: Comparison between actual and optimal harvest.

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