Headwater Streams in Porous Landscapes – What’s the contributing area?

C Rhett Jackson, University of Georgia, Warnell School of Forestry and Natural Resources, Athens, GA, United States, Menberu B. Meles, Agricultural Research Services, USDA, Davis, United States, Enhao Du, Lawrence Berkeley National Laboratory, Berkeley, CA, United States, Natalie Griffiths, Oak Ridge National Laboratory, Climate Change Science Institute and Environmental Sciences Division, Oak Ridge, United States, Luisa Hopp, University of Bayreuth, Bayreuth, Germany, Julian Klaus, Luxembourg Institute of Science and Technology, Catchment and Eco-hydrology, Esch-sur-Alzette, Luxembourg, Jeffrey McDonnell, University of Saskatchewan, School of Environment and Sustainability, Global Institute for Water Security, Saskatoon, SK, Canada and Kellie B Vache, Oregon State University, Corvallis, OR, United States