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Social Experiments on Human Interactions with Ecosystems: Agents, Values, and Policies in the Willamette Valley, Oregon. Biocomplexity in the Environment (NSF) Stanley V. Gregory, David W. Hulse, John P. Bolte, Courtland L. Smith, Michael Guzy, Chris Enright, Allan Branscomb,
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Social Experiments on Human Interactions with Ecosystems: Agents, Values, and Policies in the Willamette Valley, Oregon Biocomplexity in the Environment (NSF) Stanley V. Gregory, David W. Hulse, John P. Bolte, Courtland L. Smith, Michael Guzy, Chris Enright, Allan Branscomb, Linda Ashkenas, Randy Wildman Washington State University, Vancouver: April 11, 2006
Alternative Futuring Problem • Imagine yourself as a property owner, what would you do to restore salmon runs? • Situate yourself in the Puget-Willamette Lowland. • What is the role of policy (institutional structure) and values when choosing restoration actions?
Theory • Ecosystems – spatially-explicit, agent-based, multi-objective, scarcity-oriented, landscape futuring model • Evolutionary Ecology – landscape “evolution” (change) to reflect human values, evaluating alternative futures • Ethnoscientific/ideological/historical ecology – role of values in decision-making
Gallery Forests and Oak Savanna Willamette River Basin Planning Atlas, p. 82
McKenzie JCT Willamette River Basin Planning Atlas, p. 82
PNW-ERC change from 1990 initial conditions Willamette River Basin Planning Atlas, p. 128
Spatially-explicit McKenzie- Willamette Junction Springfield Eugene
Urban growth boundary in the vicinity of Eugene, Oregon
Agents Evaluative Models Inform Choose Outcomes Change Landscape Change Outcomes Autonomous Processes Policies
Evoland Framework Data Sources Evaluative Models Fish Abundance/Distributions Parcel Coverage Floodplain Habitat Policy Set(s) Small-Stream Macroinvertabrates Agent Descriptors Upslope Wildlife Habitat Evoland Parcel Market Values Autonomous Process Models Agricultural Land Supply Forest Land Supply Vegetative Succession Residential Land Supply Population Growth Conservation Set-Asides
EvoLand Agent Properties • Each agent makes decisions for an IDU (homogeneous tax lot and vegetation type) averaging 5000 m2. • Agents select policies that fit their values in adapting to scarcity. • Policies result in changes on the landscape to reduce scarcity regarding economic conditions and ecosystem health. • Scarcity metrics are updated with each iteration and agents make new decisions based on current scarcities and their values.
Evoland Agent Properties Adapted from Benenson and Torrens (2004:156)
Values Theory Integration • Theory of mind – developmental psychology, philosophy, sociology, linguistics(Malle et al. 2001; Conte and Castelfranchi 1995; Bratman 1987) • A general theory of action – sociology, developmental psychology, anthropology(Smelser 2001; Vaske et al. 2001; Rokeach 1973; Parsons and Shils 1951)
A general theory of action values attitudes action “… values are abstract concepts, but not so abstract that they cannot motivate behavior. Hence, an important theme of values research has been to assess how well one can predict specific behavior knowing something about a person’s values” (Karp 2001:3213).
A general theory of action (Parsons and Shils 1951) Systems Personality Social Cultural values attitudes action
A synthetic theory of action Systems personality social cultural economic biophysical Actor values attitudes behavior beliefs plan action norms desires goals intentions I
Complex theory of action Drivers Context = difficulty, time, expense Systems personality social cultural economic biophysical Actor values attitudes behavior beliefs plan action norms desires goals intentions I information/matter/energy
Inferring Values from Actions: Votes on 1998 Environmental Ballot Measures
Definition of value categories including descriptive terms and text examples.
EvoLand Policies River McMansion ? Court Smith photo Randy Wildman photo “Natural” River ?
EvoLand Urban Growth Problem • Initial Conditions • Conservation Scenario with UGBs, 50 years • conservation policies, pop growth within UGB • Development Scenario without UGBs, 50 years • development policies, expansion anywhere • Conservation and Development, 50 years • which has the most impact
McKenzie Study Area 7,091 hectares 36% Urban 9% Rural 18% Agriculture 5% Other Vegetation 13% Forest 19% Roads&Water 40,000 people Evaluative Models scaled -3 to +3 Economic = -1.8 Ecosystem Health = -1.5 Initial Conditions
Initial Conditions 50-Yr Conservation Run
36% Urban 9% Rural 18% Agriculture 5% Other Vegetation 13% Forest 19% Roads&Water 40,000 people Economic = -1.8 EcoHealth = -1.5 37% Urban 3% Rural 7% Agriculture 1% Other Vegetation 32% Forest 19% Roads&Water 82,300 (1.5%/yr inc) Economic = 0.3 EcoHealth = 2.1 Initial Conditions vs Conservation
50-Yr Development Run Initial Conditions
Development 60% Urban 9% Rural 4% Agriculture <1% Other Veg 8% Forest 19% Roads/Water 82,500 people Economic = 2.5 EcoHealth = -2.0 Conservation 37% Urban 3% Rural 7% Agriculture 1% Other Veg 32% Forest 19% Roads/Water 82,500 people Economic = 0.3 EcoHealth = 2.1 Initial Conditions • 36% Urban • 9% Rural • 18% Agriculture • 5% Other Veg • 13% Forest • 19% Roads/Water • 82,500 people • Economic = -1.8 • EcoHealth = -1.5
PNW-ERC EvoLand
UGB Futuring Conclusions • UGBs cannot protect both farms and fish • Without UGBs development eliminates farms and fish • Ecological change is slow relative to economic change • Substantial conversion to forest required to achieve benefits for fish • Will forestry may produce more income and fish protection than agriculture? • What incentives will product more forests?
Modeling Conclusions • EvoLand provides a generalized modeling structure • Agent-based modeling allows for investigation of a broader set of future alternatives • Can we assume economic and ecological scarcity are major driving forces for future policy selection? • Are values important? What mechanisms change agents’ values? • Does institutional structure (policies) play a larger role than values? Institutional structure comes from values? • How should the results of alternative futuring be validated?
EvoLandA modeling framework for the analysis of complex, coupled ecological/human systems http://evoland.bioe.orst.edu/ http://oregonstate.edu/instruct/anth/smith/ Support from the National Science Foundation, Biocomplexity in the Environment