PEWI A dynamic landuse and ecosystem service tradeoffs assessment tool Why PEWI How agriculture can produce outcomes that society desires How we can learn Complex socialecological relationships ID: 321831
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People in Ecosystems/Watershed Integration (PEWI):
A dynamic land-use and ecosystem service tradeoffs assessment toolSlide2
Why PEWI?
How agriculture can produce outcomes that society desires
How we can learnComplex social-ecological relationshipsEcosystem service tradeoffsHow we can facilitate urban-rural dialogueSlide3
An analogy
The analogy of a sandbox is a great way to think about PEWIWhy a sandbox?Slide4
Friends and a sandboxSlide5
The right tools and a designSlide6
The finished product…untilSlide7
Create something newSlide8
What if there were a virtual “sandbox” to explore humans, land use, and ecosystem service in a watershed?Slide9
PEWI is that sandbox
Fun, simple, and accurateExplore land uses and ecosystem services without technical expertise or the costs of experimenting in the real worldSlide10
Introduce PEWI
Models how changes in land use and management result in tradeoffs in the levels of ecosystem services
outcomes in a fictional Iowa agricultural watershedSlide11
Introduce PEWI
Models how changes in land use and management result in tradeoffs in the levels of ecosystem services
outcomes in a fictional Iowa agricultural watershed4 concepts:Land use and managementWatershedTradeoffs
Ecosystem ServicesSlide12
1.
Land uses and managementSlide13
2. What is a watershed?
When water hits land, runoff
drains
to a stream, lake, or larger waterway.A watershed is the area of land where all of the water that is under it or drains off of it goes into the same place. Slide14
3. What are ecosystem services?
Ecosystem services are “the conditions and processes through which natural ecosystems, and the species that make them up, sustain and fulfil human
life” (Daily, 1997).Ecosystem services are “the benefits people obtain from ecosystems. These include provisioning services
such as food and water; regulating services such as flood and disease control; cultural services such as spiritual, recreational, and cultural benefits; and supporting services, such as nutrient cycling, that maintain the conditions for life on Earth” (UNEP, Millennium Assessment Reports).Slide15
Modified, with additions, from the Millennium Assessment Slide16
4. Tradeoffs among
ecosystem services
Adapted from Foley et al. (2005).Photos from Iowa DNR (left), USDA NRCS (middle), and Sarah Hirsh (right)Slide17
www.nrem.iastate.edu/pewiSlide18
PEWI land usesSlide19
PEWI physical feature mapsSlide20
Behind the scenes
7 modules in PE/WI 16 ES indicators
BiodiversityGame WildlifeCarbon SequestrationNitratePhosphorusErosion & SedimentationYieldSlide21
PEWI resultsSlide22
PEWI resultsSlide23
User designsSlide24
Compare two designsSlide25
Check PEWI out onlinePEWI Companion Website
http://www.nrem.iastate.edu/pewiPEWI App
http://www.nrem.iastate.edu/pewi/appIowa State University Project LeadersProf. Lisa Schulte
Moore lschulte@iastate.eduProf. John Tyndall
jtyndall@iastate.eduCarrie Chennault carriemc@iastate.edu