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The Global South is facing severe challenges in ensuring livelihood security due to climate change impacts, environmental degradation and population growth as well as changing lifestyles. These complex problems cannot be solely solved by single scientific disciplines – they require transdisciplinary research (TDR). Stakeholders from civil society, the corporate sector, government and science need to pool their knowledge to find solutions for sustainable transformations. In Namibia, we have been involved in TDR projects on water supply, and sanitation services as well as livestock management in rangeland systems. In this paper, we review two TDR projects that differ in multiple ways and hence allow us to carve out structural differences and critically discuss research outcomes, lessons learned and the challenge of North–South collaborations. Our review builds upon published and unpublished project documents as well as expert interviews with Namibian and German researchers who were involved in the projects. Our results show that TDR can be put into practice in different ways, depending on the research focus and the period available. The TDR phases of problem framing, inter- and transdisciplinary integration were implemented with different tools and foci points. We discuss the role of project length and funding conditions for project success and outcome generation. In addition, we critically consider the role of Namibian and German researchers in these international collaborations. The conclusions we draw touch upon the points of preparatory research funding, the equal acknowledgement of Global South contributions to joint research projects and the explicit handling of TDR components in project work. Significance: • The current social-ecological challenges are complex and require TDR as a mode of knowledge coproduction, particularly in a development context. • Inter- and transdisciplinary integration are critical processes for a project to be successful and require the allocation of adequate time and monetary resources. • Longer-term projects with a funded preparatory research phase constitute a structural model for TDR as project outcomes can evolve over time. • Global South researchers carry a hidden burden in international collaborations that has to be adequately acknowledged upfront in project planning and final products.
Rain- and floodwater harvesting (RFWH) technologies and water reuse are ideal and generalpurpose technologies to improve water security and to contribute to climate adaptation – in particular for semi-arid regions. These technologies are part of a multi-resources mix within an integrated water resources management (IWRM). They create capacities to buffer water fluctuations and alleviate water scarcity. In this way, they reduce the pressure on existing resources, and can stimulate local economies. However, in order to be sustainable, these technologies need to be adapted to the local context – through suitable design, adapted operation requirements, and a back-up by training users and operators accordingly.
Despite various policy and management responses, biodiversity continues to decline worldwide. We must redouble our efforts to halt biodiversity loss. The current lack of policy action can be partly linked to an insufficient knowledge base regarding the conservation and sustainable use of biodiversity. Biodiversity research needs to incorporate both social and ecological factors to gain a deeper understanding of the interrelations between society and nature that affect biodiversity. A transdisciplinary research approach is crucial to fulfilling these requirements. It aims to produce new insights by integrating scientific and nonscientific knowledge. Several measures need to be taken to strengthen transdisciplinary social-ecological biodiversity research: Within the science community: firstly, scientists themselves must promote transdisciplinarity; secondly, the reward system for scientists must be brought into line with transdisciplinary research processes; and thirdly, academic training needs to advocate transdisciplinarity. As for research policies, research funding priorities need to be linked to large scale biodiversity policy frameworks, and funding for transdisciplinary social-ecological research on biodiversity must be increased significantly.