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Multicriteria Evaluation of Coastal Zone Sites

Multicriteria Evaluation of Coastal Zone Sites. Yanlai Zhao, Systems Science Dan Lane and Wojtek Michalowski, School of Management University of Ottawa Rob Stephenson and Fred Page, Department of Fisheries and Oceans, St. Andrews Biological Station. Background.

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Multicriteria Evaluation of Coastal Zone Sites

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  1. Multicriteria Evaluation of Coastal Zone Sites Yanlai Zhao, Systems Science Dan Lane and Wojtek Michalowski, School of Management University of Ottawa Rob Stephenson and Fred Page, Department of Fisheries and Oceans, St. Andrews Biological Station 4th World Fisheries Congress

  2. Background • Procedure needed for the systemic evaluation of coastal zone sites • Compare alternative policies/sites and impacts affecting the coastal zone • Develop procedures for multicriteria valuation involving different perspectives of many participants • Bay of Fundy and aquaculture 4th World Fisheries Congress

  3. Grand Manan Application • Identify key ecosystem components and interactions due to coastal resources and activities • Select general sites of interest for evaluation by all participants • Define specific scale of analysis and evaluation appropriate to decision making • Apply information to support policy decision making 4th World Fisheries Congress

  4. Grand Manan System Components Biological/Ecosystem Resources Socioeconomic Activities Herring Weirs Lobster Scallop urchin drags Lobster traps Herring: Day/Night Fish Farm Sites Habitat Scallops Urchins Toxicology Rockweed Salt Marshes Chemical A Benthic Structures Chemical B Current Flow Chemical C 4th World Fisheries Congress

  5. AHP Model of Site Evaluation Problem Goal and Ecosystem Components Attributes (Top-down) Ecosystem Goal (1) Site Attributes (Bottom-up) Resources, Habitat, Toxicology, Activities Herring, Scallops, Lobster, Urchins Salt Marshes, Rockweed Chemicals Weirs, Traps, Drags Subelement detail Site Options: GIS Evaluations (participant independent) (2) 4th World Fisheries Congress

  6. (1) Hierarchical problem formulation:Participant Dependent/SiteIndependent Level 1: Goal Ecosystem Goal Level 2: Ecosystem components Resources Habitat Toxicology Activities Resources A,B,C,D Habitat X,Y,Z ToxicologyChemicalsR,S,T Activities K,L,M, N Level 3: Component Elements 4th World Fisheries Congress

  7. (2) Site Evaluation viz Hierarchy:(participant independent)

  8. (1)+(2) Synthesis:Decision Analysis and Rankings Goal Resources, Habitat, Toxicology, Activities Herring, Scallops, Lobster, Urchins Salt Marshes, Rockweed Chemicals Weirs, Traps, Drags Local subelements Site Evaluation Participants Perspectives Site Options: GIS Evaluations (participant independent) 4th World Fisheries Congress

  9. Conclusions • Modelling presentation assists in easy exploration of different ecosystem options • Evaluation prototype leads to asking the right questions re valuation • Multicriteria decision making presents need for consensus • Results provide decision support involving multiple participants in an uncertain, complex environment 4th World Fisheries Congress

  10. Synthesis Results • AHP Model framework using Expert Choice same for all participants • Ranked results for evaluating same sites by participant • Evidence of consensus/negotiation requirements for decision support 4th World Fisheries Congress

  11. Modelling Process • MapInfo GIS with VB.NET interface • Data overlay process for site inventory • Site selection procedure • Preparation for AHP multicriteria evaluation • Ranking of sites by participants 4th World Fisheries Congress

  12. Governance Structure • Jurisdiction: Federal versus Provincial issues • Not-in-my-backyard syndrome • Commercial expansionary perspectives • Multiple participants: scientists, managers, industry, environmentalists, communities 4th World Fisheries Congress

  13. Valuation • Common scale defined for valuation across components • Attributes of interacting model components translated to functional form • Multicriteria analyses applied to predefined problem hierarchy • Ideal ranking comparison for site evaluation by the participants 4th World Fisheries Congress

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