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Service Path Attribution Networks (SPANs): A Network Flow Approach to Ecosystem Service Assessment

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  • Gary W. Johnson

    (University of Vermont, USA)

  • Kenneth J. Bagstad

    (University of Vermont, USA)

  • Robert R. Snapp

    (University of Vermont, USA)

  • Ferdinando Villa

    (University of Vermont, USA)

Abstract

Ecosystem services are the effects on human well-being of the flow of benefits from ecosystems to people over given extents of space and time. The Service Path Attribution Network (SPAN) model provides a spatial framework for determining the topology and strength of these flows and identifies the human and ecological features which give rise to them. As an aid to decision-making, this approach discovers dependencies between provision and usage endpoints, spatial competition among users for scarce resources, and areas of highest likely impact on ecosystem service flows. Particularly novel is the model’s ability to quantify services provided by the absence of a flow. SPAN models have been developed for a number of services (scenic views, proximity to open space, carbon sequestration, flood mitigation, nutrient cycling, and avoided sedimentation/deposition), which vary in scale of effect, mechanism of provision and use, and type of flow. Results using real world data are shown for the US Puget Sound region.

Suggested Citation

  • Gary W. Johnson & Kenneth J. Bagstad & Robert R. Snapp & Ferdinando Villa, 2012. "Service Path Attribution Networks (SPANs): A Network Flow Approach to Ecosystem Service Assessment," International Journal of Agricultural and Environmental Information Systems (IJAEIS), IGI Global, vol. 3(2), pages 54-71, July.
    • Handle: RePEc:igg:jaeis0:v:3:y:2012:i:2:p:54-71
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    Cited by:

    1. Wenping Liu & Chenlu Dong & Weijuan Chen, 2017. "Mapping and Quantifying Spatial and Temporal Dynamics and Bundles of Travel Flows of Residents Visiting Urban Parks," Sustainability, MDPI, vol. 9(8), pages 1-15, July.
    2. Bagstad, Kenneth J. & Johnson, Gary W. & Voigt, Brian & Villa, Ferdinando, 2013. "Spatial dynamics of ecosystem service flows: A comprehensive approach to quantifying actual services," Ecosystem Services, Elsevier, vol. 4(C), pages 117-125.
    3. Bagstad, Kenneth J. & Semmens, Darius J. & Winthrop, Robert, 2013. "Comparing approaches to spatially explicit ecosystem service modeling: A case study from the San Pedro River, Arizona," Ecosystem Services, Elsevier, vol. 5(C), pages 40-50.
    4. Ferdinando Villa & Kenneth J Bagstad & Brian Voigt & Gary W Johnson & Rosimeiry Portela & Miroslav Honzák & David Batker, 2014. "A Methodology for Adaptable and Robust Ecosystem Services Assessment," PLOS ONE, Public Library of Science, vol. 9(3), pages 1-18, March.

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