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Coupled Human and Natural Systems (CHANS)

Coupled Human and Natural Systems (CHANS). Integrated systems in which humans and natural components interact. Liu et al. 2007 Sciecne. Diagram modified from http://www.nsf.gov/pubs/2007/nsf07598/nsf07598.htm. Examples of CHANS. Social-Ecological Systems Human-Environmental Systems

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Coupled Human and Natural Systems (CHANS)

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  1. Coupled Human and Natural Systems(CHANS) Integrated systems in which humans and natural components interact. Liu et al. 2007 Sciecne Diagram modified from http://www.nsf.gov/pubs/2007/nsf07598/nsf07598.htm

  2. Examples of CHANS • Social-Ecological Systems • Human-Environmental Systems • Society-Nature Systems • Population-Environment Systems • Ecological-Economic Systems • Social-Economic-Natural Complex Systems

  3. Complexity of Coupled Human and Natural SystemsJianguo Liu, Thomas Dietz, Stephen Carpenter, Marina Alberti, Carl Folke, Emilio Moran, Alice Pell, Peter Deadman, Timothy Kratz, Jane Lubchenco, Elinor Ostrom, Zhiyun Ouyang, William Provencher, Charles Redman, Stephen Schneider, William Taylor • Reciprocal Effects • Feedback Loops • Nonlinearity • Thresholds • Surprises • Legacy Effects • Time Lags • Resilience • Heterogeneity Liu et al 2007 Science

  4. Example Questions to Address • How do different aspects of complexity vary and interact across space, over time, and at different organizational levels? • How do human decisions affect CHANS complexity? • How does CHANS complexity affect human decisions?

  5. Status of CHANS Research • Interest in CHANS research is growing rapidly around the world. • Need more solid and comprehensive theoretical foundations • Go beyond traditional disciplinary theories • Need more powerful research tools • Agent-based models

  6. Need and Opportunities for CHANS Research • Better understanding of global challenges • More informative for management, conservation, policy, and other arenas. • Funding agencies • The U.S. National Science Foundation (Dynamics of Coupled Natural and Human Systems Program)

  7. International Network of Research on Coupled Human and Natural Systems (CHANS-Net.org)Sponsored by The National Science FoundationCoordinatorsJianguo (Jack) Liu and Bill McConnell

  8. Objectives of CHANS-Net • Promote communication and collaboration across the CHANS community. • Generate and disseminate comparative and synthesis scholarship on CHANS. • Expand and diversify the CHANS community.

  9. CHANS Events at 2011 AAAS • Friday, February 18 8:30 - 11:30 am Convention Center, 140B • Mapping and Disentangling Human Decisions in Complex Human-Nature Systems 1:30 - 4:30 pm Convention Center, 140B • Telecoupling of Human and Natural Systems • Saturday, February 19 10:00 - 11:30 am Convention Center, 146B • Resource use and Ecological Resilience in a Tropical Socio-Ecological system 1:00 - 5:00 pm Convention Center, Exhibit Hall D • Student Poster Competition • Sunday, February 20 8:30 - 11:30 am Convention Center, 140B • The Challenge of Measuring Sustainability 1:00 - 5:00 pm Convention Center, Exhibit Hall D • General Poster Competition 1:30 - 4:30 pm Convention Center, 146B • Modeling Across Millennia: Interdisciplinary Paths to Ancient Socionatural Systems • Monday, February 21 9:45 - 11:15 am Convention Center, 156 • Social Networks and Sustainability

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