Debriefing fishbanks
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Debriefing Fishbanks. Fall 2009. Reflecting on the Game. Video – Fish Banks game Teams’ Performances What happened and why? Alternative strategies What can be done?. Summary of Ocean’s Behavior. 1 2 3 4 5 6 7 8 9 10. FISH. SHIPS. CATCH.

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Debriefing Fishbanks

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Debriefing Fishbanks

Fall 2009


Reflecting on the Game

  • Video – Fish Banks game

  • Teams’ Performances

    • What happened and why?

    • Alternative strategies

  • What can be done?


Summary of Ocean’s Behavior

1 2 3 4 5 6 7 8 9 10

FISH

SHIPS

CATCH


Typical Game Behavior

Fish

Catch

Ships

0 1 2 3 4 5 6 7

YEAR


Typical Game Behavior – Fleet


Typical Game Behavior – Catch


Typical Game Behavior – Fish Population


Aggressive Strategies

“Purchase many boats until average fish productivity starts to decline. When fish productivity goes down, fish other areas.”

“Increase fleet size as long as yields are stable.”

“Buy boats early in the game and then sell them toward the end. Catch as many fish as possible at the beginning of the period”


Conservative Strategies

“We want to keep our fleet at this constant level and disperse it so as not to deplete fish resources in the deep sea and coast. “


The Fisheries System: Fish


The Fisheries System: Catch


The Fisheries System: Investment

+,-


The Fisheries System Structure

+,-


Does fish depletion happen in real life?

• Pacific sardine fishery (late 40s)

• Peruvian anchovy fishery (early 70s)

• North Sea Herring (1970s)

• Georges Bank Cod fish (early 90s)

  • Pacific salmon fishery (2008)

  • Atlantic bluefin tuna (2008)

  • 2003 study suggests:

    • 29% of all fished species have collapsed; catch 90% below historic levels

    • Total world fish catch depleted by 2048


Dietary Importance of Fish Population

Source: "Assaulting the Seas: Rising Human Tide Overwhelms Oceans," The ZPG Reporter, July 1991.

At present, fish comprise 34 percent of the animal-

protein for the world's population; in developing

nations, more than 40 percent.


Other Importance of Fish Population

  • Export earnings for poor nations

  • Source of jobs and income

  • Foundation for the culture of many regions and towns

  • Support for a diverse ecosystem


Examples of Collapse

• Drinking too much alcohol

• Cutting too many trees

• Abusing trust and good will - phone marketing

• Relying on debt

• Building too many offices or residences

• Fabricating financial accounts

• Depleting ozone layer, ground water, agricultural soils


Fishbanks: Causes of collapse?

  • Misinformation issues

    • Difficulty to assess the evolution of the fish population

    • Assumptions of stability

    • What happened? We sent ships but there is no catch?

  • Delay in control response

    • Feasibility of a unilateral control measure?

    • Lack of trust?

  • Limited time horizon

    • 8 year game


  • Tragedy of the Commons

    • Popularized by Hardin (1968)

      The model:

    • Private gains hold social or ecological costs

    • Benefits gained by individual, costs borne by all

    • Incentive to put more cattle on the commons as long as personal gain is more than personal cost

    • Common-pool resources subject to ruin


    What can be done?

    • Partition the seas

    • Establish quotas

    • Farm fish

    • Change consumption preferences

    • Limit ship fleets, technology

    • Develop better methods for stock assessment

    • Change social values and economic incentives

    • Understand the role of technology


    Impact of Technology on Ship Effectiveness

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    Is self-regulation feasible?

    • Responsible care

    • ISO 14001, 14004

    • Global Reporting Initiative


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