Water Use Efficiency from Lethbridge, Alberta- Ameriflux site
http://cdiac.esd.ornl.gov/programs/ameriflux/leth.html#amer.ca01flan.01

 

Walnut River Watershed, Kansas mix grass
http://public.ornl.gov/ameriflux/Participants/Sites/Site_Info/siteInfo.cfm?KEYID=us.walnut_river.01Site Picture