1. Why study GLOBAL WARMING? www.noaanews.noaa.gov/ stories/s412.htm

2. Photograph by Peter Essick

3. Species distributions are changing Some animals are moving toward the poles Some are moving up mountains Many are losing habitat, migration routes As Habitats Change

4. Plants and Disease Agricultural crops may be affected as local weather and seasons change Insect population explosions Invasive species Disease distributions: malaria, cholera, etc http://www.mindfully.org/Air/Global-Warming-Health20aug00b.GIF www.uaf.edu/.../2004/ ninilchik-beetles.html

5. Increased severe weather: droughts, floods, hurricanes http://magma.nationalgeographic.com/ngm/0409/feature3/zoom5.html

6. “More than a hundred million people worldwide live within three feet of mean sea level.” ~National Geographic fact http://www.ourbangla.com/bangladesh/pg/flood/FLOOD_JESSORE_17_8AP_JWH_s0.jpg

7. Causes: Greenhouse gases Burning fossil fuels Forest fires Volcanoes Deforestation www.ctv.ca/.../ 1038431872899_41?s_name=&no_ads=

8. www.unexplainable.net/.../ article_581.shtml

9. Collapsing ground from melting permafrost http://climchange.cr.usgs.gov/info/assessment/tok.jp eg Melting sea ice http://www.phenology.org.uk/standard/home/why/i mages/polalbearsicemelt.jpg http://www.ciel.org/Pictures/ice_arch.jpg

10. REDUCE CO 2 Emissions! Clean Electricity / Alternative EnergyClean Electricity / Alternative Energy Smart Transportation and Land UseSmart Transportation and Land Use Healthy Farms and ForestsHealthy Farms and Forests Promote Conservation / RestorationPromote Conservation / Restoration Make Greener ChoicesMake Greener Choices

11. So how do ecosystems respond to elevated CO 2 ? Study site: Cheyenne, WY Treatments: –Elevated CO 2 –Heating –Changing rainfall patterns CO 2 sink or source?

13. What is happening belowground?

14. CO 2 fluxes…. Responses to rainfall