There is wide consensus among scholars and practitioners that improved irrigation technologies increase farm productivity and improve resource use efficiency. However, there is also growing empirical evidence that efficiency improvements in irrigation water use may create rebound effects, i.e., they may trigger changes in farmers’ behavior that partly or fully offset the technical water savings expected under ceteris paribus conditions. In extreme cases, total water consumption may even increase. We studied the impacts of introducing water-saving irrigation technologies in Uzbekistan and used structured stakeholder interviews for an expert-based assessment of potential rebound effects. Our findings contribute to the understanding of impacts of technological and institutional responses to environmental and economic pressures in sustaining water resources. The study demonstrates that although the objective of increasing irrigation efficiency may be achieved, the actual water savings under Uzbek conditions are likely to be reduced due to rebound effects. Unless there are effective policy interventions, we expect rebound effects through an increase in water supply for crops that compensates for current shortages of irrigation water availability, an increase in irrigated area, a switch to more water-intensive crops, and overall economic growth. The findings of this paper provide a reference point for estimating the water-saving potential and for evaluating and adapting policies.

We review historical and contemporary literature on change in water-management institutions in post-socialist Uzbekistan, exploring the dynamics of change of formal institutions in irrigationwater management there by analyzing relationships between the perceptions and beliefs of policymakers, policy interventions they undertake, and the consequences that these seem to have on resource-use practices. We have mainly relied on the reviewed literature, but have also made use of expert interviews conducted by the authors during 2011-2016 in Uzbekistan. Our results indicate that Uzbek policymakers have learned much from the unanticipated and undesired consequences of earlier irrigation reforms, as their perceptions and beliefs have changed and developed over time. Yet, although policymakers' beliefs have been fostered by a newly emergent Integrated Water Resources Management approach-which has become a central, globally promoted paradigm-the beliefs and institutions inherited from the Soviet era, as well as informal practices in irrigation-water use, have also been acting to constrain the choices of politicians and economic entrepreneurs.

Recent global and regional assessments of the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) show that Nature’s Contributions to People (NCP) are under an alarming threat due to the continuing loss of biodiversity. These assessments call for increasing conservation efforts and a more sustainable use of biodiversity to enhance the chances of halting biodiversity loss and reversing current trends. One of the strategies to achieve change is to mainstream biodiversity into sectoral policies. Mainstreaming, a concept that can be traced back to the Brundtland report, promotes the integration of the environment into political, societal, and economic planning and decision-making. Based on the review of key studies undertaken during the regional assessment for Europe and Central Asia, we develop a stepwise approach to analyze the current status of mainstreaming of biodiversity and NCP. The approach can be used both for policy design purposes and diagnostic evaluations. It demonstrates that mainstreaming has the potential to improve the conservation and sustainable use of biodiversity as well as the sustained provision of NCP. However, based on the status of implementation across Europe and Central Asia, we conclude that mainstreaming needs to be pursued and implemented in a stronger and more systematic way. The results of our assessment provide important input to national strategies and policies but also to the ongoing process of the Conference of the Parties to the Convention on Biological Diversity while developing the post-2020 global biodiversity framework.

Increasing water and energy demand in agriculture due to changing climatic conditions and high resource consumption is widespread in Central Asia. Under these constraints, compounded by lack of irrigation water, farmers are opting to use drainage water for crop production, with negative consequences. Focusing on Uzbekistan, we evaluate the governance of farmer adoption of selected technological innovations (i.e., constructed wetlands and biogas) to improve crop productivity while providing water and energy savings. We build upon farmers’ expressed views of the strategic decisions they would take regarding constructed wetlands and biogas plants. We use institutional analysis to identify relevant action situations, highlight potential institutional complementarity between these situations, and indicate promising areas for policy intervention.

Our article reflects on the Kyrgyz experience of a transformation in pasture use and management, seeking to contribute to the literature on institutional change in post-socialist contexts. We employ the distributional theory of institutional change in order to understand gradual, informal de facto institutional change which emerged because of changes in formal institutions (laws) that changed the bargaining positions of actors involved. The study findings demonstrate the dynamics of change of interrelated formal institutions, power resources, informal institutions, and their distributional consequences. We observe that the enforcement of new pasture legislation introduced in 2009 gradually reducing bargaining asymmetry among actors, in the long run potentially favouring less powerful pasture users, who are herders providing herding services to their community. Evaluating the potential implications of formal institutional change for day-today pasture management and informal institutions, we expect changes to contribute to maintenance of pasture health in the medium to long term. However, traditionally powerful actors (individual herders) typically try to resist these changes and the shift to new informal institutions is therefore still highly contested.

Worldwide, groundwater is often poorly understood and misgoverned due to difficulties in monitoring and collective action organisation. Problems occur due to groundwater’s invisible nature, consequent poor groundwater understanding, and systemic institutional failures. In Central Asia, groundwater coordination is important at local as well as national levels, considering regional water competition since state transitions. Historic water overuse further emphasises a need for groundwater coordination between states. Information on aquifer status is often publicly unavailable and rarely shared, even between national governmental agencies. Considering the region’s arid climate and dependence on glacial melt for seasonal flows, protection of groundwater is vital to ensure water access amid pressures such as climate change. Groundwater has historically provided drinking water, with recent increased use as an alternative water source for the agriculture sector. Institutional failures in groundwater governance can be understood as “soft limits” to adaptation in the region, which governance capacity improvements could ameliorate. To understand the current status of Central Asian groundwater governance through an illustrative case of Uzbekistan, we consider its social-ecological system, associated problems (e.g., pollution, and overexploitation), and institutional context. This paper summarises findings specific to Uzbekistan from a systematic literature review on the subject in Central Asia, outlining governance challenges and opportunities. Informational governance is analysed and reveals a clear impact on groundwater use and outcomes. They include: i) uncertainty over status (i.e., quantity and quality); ii) governance complexities at various levels due to multiple knowledges; iii) power constellations and a lack of cooperation suggest increased uncertainty; iv) interest in information reform. Public data access and coordination across the region should better support collective action at local levels, reduce governance complexities, and reduce status quo hierarchies.