Transdisciplinary research is urgently needed but has rarely been applied in sustainability science. Here, we present a case study for a transdisciplinary approach to identify tipping points in the Jordan River region, an area of severe conflicts and environmental problems. The aim was to identify and prioritize different ecological and social tipping points within a framework of transdisciplinary assessment, using the Jordan River Region as a case study. The methodology included an iterative process in which a multidisciplinary group of scientists and regional stakeholders evaluated emerging tipping points involving professionally facilitated workshops, a correlation analysis, and an anonymous ranking based on specific criteria (practical relevance, scientific novelty, transboundary elements, and feasibility of intervention). During the process, the similarities and differences in the perceptions of the potential case studies by stakeholders from the three countries (Israel, Palestine and Jordan) involved were analyzed. The results found key elements of the term tipping point (abrupt, difficult to predict, irreversible regime shift, difficult management), and showed local and regional differences in evaluating potential case studies, where degradation or desertification of rangelands emerged as a final case study of common concern. The lessons learnt show the potential and challenges of transboundary cooperation, and the possibility of the co-creation of research with stakeholders to build knowledge about the diversity of tipping points. The study concludes that common ground related to the sustainable management of natural resources exists even in highly contentious areas, and among highly different cultural, political, and socio-economic conditions. The approach presented here may thus inform practitioners in prioritizing areas of transboundary sustainability research in other regions.

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