1. Duke University Wetland Center, Nicholas School of Environment and Earth Sciences, Duke University, Box 90333, Durham, NC 27708, USA.
2. Development Alternatives, 7250 Woodmont Avenue, Bethesda, MD 20895, USA.
3. College of Science, University of Basra, Basra, Iraq-Basrah-Garmet Ali-P.O. Box 49, Iraq.
4. Iraq Foundation, 1012 14th Street N.W., Washington, DC 20005, USA.
5. International Resources Group, 1211 Connecticut Avenue N.W., Washington, DC 20036, USA.