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Ideal Free Distributions of Mobile Pastoralists in Multiple Seasonal Grazing Areas
Institution:1. Associate Professor, Department of Anthropology, Ohio State University, Columbus, OH 43210, USA;2. Associate Professor, Departments of Evolution, Ecology and Organismal Biology and Mathematics, Ohio State University, Columbus, OH 43210, USA;4. Graduate Student, City and Regional Planning, Ohio State University, Columbus, OH 43210, USA;3. Program Coordinator, Sustainable Forest Management in the Congo Basin, German Development Organization (GTZ), Yaoundé, Cameroon;1. Research Ecologist US Department of Agriculture–Agricultural Research Service, Rangeland Resources Research Unit, Cheyenne, WY 82009, and Fort Collins, CO 80526, USA;2. Research Leader and Rangeland Scientist, US Department of Agriculture–Agricultural Research Service, Rangeland Resources Research Unit, Cheyenne, WY 82009, and Fort Collins, CO 80526, USA;3. Professor Emeritus, Department of Biology and Natural Resource Ecology Laboratory, Colorado State University, Fort Collins, CO 80523, USA;1. Museum of Vertebrate Zoology, University of California, Berkeley, CA 94720, USA;2. Department of Integrative Biology, University of California, Berkeley, CA 94720, USA;3. Department of Psychology, University of California, Berkeley, CA 94720, USA;1. Research Ecologist (Postdoctoral), USDA–Agricultural Research Service, Eastern Oregon Agricultural Research Center, Burns, OR 97720, USA;2. Professor, Department of Plant and Wildlife Sciences, Brigham Young University, Provo, UT 84602, USA;3. Associate Professor, Department of Plant and Wildlife Sciences, Brigham Young University, Provo, UT 84602, USA;4. Associate Professor, Geography Department, Brigham Young University, Provo, UT 84602, USA;5. Professor, Department of Rangeland Ecology and Management, University of Idaho, Moscow, ID 83844, USA
Abstract:The pastoral system in the Far North Region of Cameroon is best described as an open system in which mobile pastoralists have open access to common-pool grazing resources. We hypothesized that there is a self-organizing management system of open access to common-pool grazing resources and predicted that we would find an Ideal Free Distribution (IFD) of mobile pastoralists within seasonal grazing areas. In this paper we used mobility data and remote sensing data from two seasonal grazing areas at the end of the dry season in three consecutive years to evaluate that hypothesis. We found evidence of an IFD in the two seasonal grazing areas of the Logone Floodplain and the Lake Maga area. These findings offer further support for our hypothesis that there is a complex adaptive system in which pastoralists distribute themselves effectively over available grazing resources.
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