Dr. Thomas L. Crisman is a Jefferson Science Fellow, AAAS Fellow and Professor in the School of Geosciences, University of South Florida-Tampa. Dr. Crisman has investigated the ecology, management, restoration and conservation of freshwater wetlands, lakes and rivers in the subtropics and tropics for more than 44 years.  He has conducted  long term research programs in Florida, Latin America, Africa, the Middle East and the Balkans.  Recently, Dr. Crisman has been assessing water security issues in the Caribbean, Middle East and North Africa by applying interactions among ecosystems, human societies and the Nexus of water, energy and food. Dr. Crisman has been a Ford Foundation Travelling Scholar in Venezuela, a visiting scientist in Australia, an instructor for OTS in Costa Rica, a Fulbright Scholar in Greece and Turkey, and a visiting professor at universities in Uganda, Denmark, Finland, Greece, Turkey and  Zimbabwe. He chairs the International Board for the International Balkan Environment Center in Greece, has consulted with  UNDP/World Bank and InterAmerican Development Bank and was a board member of the United States-Israel Binational Science Foundation for twenty years. He has delivered nearly 300 presentations at scientific meetings throughout the world, and he has written 96 refereed publications, two books and 29 book chapters. Dr. Crisman received three degrees from Indiana University, then completed a postdoctoral period  at the University of Minnesota. Following 30 years at the University of Florida, Dr. Crisman joined University of South Florida in 2007.