There is wide agreement that a nexus or integrated approach to managing and governing natural resources such as land, water, and energy can improve environmental, climate, human, and political security. However, few if any countries in the MENA region have made progress in implementing such an approach. There appear to be several constraints inhibiting the development and adoption of nexus approaches. These constraints include strong sectoral silos, insufficient incentives for integrated planning and policy making at all levels, and limited vision, knowledge, and practical experience to guide successful implementation. In turn, the limited implementation and hence lack of empirical evidence of a nexus approach, which could demonstrate its benefits, does little to strengthen political will for the development of adequate incentives, structures, and procedures. Against this backdrop, this paper presents five case studies which take an integrated approach, in three MENA countries, namely Jordan, Lebanon, and Morocco. Based on an analytical framework developed here, the paper analyses and compares the success factors for nexus implementation, and also for transfer and upscaling. The analysis emphasizes the need for appropriate framework conditions, targeted investments and pioneering actors, to make integrated approaches across sectors and levels work. With the evidence presented, the paper aims to set in motion a positive or virtuous cycle of generating more nexus evidence, improved framework conditions, further nexus implementation on the ground, and from that even more nexus evidence. Finally, the paper contributes to overcoming the repeated requests for better definition and conceptualization of the nexus, which often has slowed down adoption of the concept.

River basin management and decentralisation reforms are promoted worldwide for solving water pollution problems. In Mexico, governmental efforts have been made to operate wastewater treatment plants countrywide, but federal administrations have not achieved their intended outcomes. Acknowledging the role of governance in the implementation of wastewater treatment policy, this paper analyses three cases in central Mexico and addresses the question: How does the governance context affect the implementation of the wastewater treatment policy in central Mexico? A governance assessment tool is applied to answer the question. The assessment allows an understanding of the governance context and is paired with a comparative case study design. Data was collected through semi-structured interviews and documents reviews. The results indicate that the governance context mainly restricts the implementation of the wastewater treatment policy. In all subnational three cases, the river basin management and decentralisation reforms have not reached their objectives. By comparing the three cases, we found that the state level can play a relevant role to decrease fragmentation and to increase the coherence of the wastewater treatment policy. Therefore, strengthening the involvement of the state government and the improvement of mechanisms that limit political machinations can increase the supportiveness of the governance context.

Public participation (PP) is increasingly expected to enhance the effectiveness of water resources management. This is recognized in recent legislation such as the European Union Water Framework Directive. We identify five key constituents that affect the success of PP processes and which can be used as indicators thereof. These comprise: 1) the scope of the participants; 2) communication with the public; 3) capacity building; 4) timing; and 5) financing of participation. They are based on the management of resources—namely time, human and financial resources—and on further aspects that emerge from the utilization of these resources throughout the PP process. Drawing on existing case studies from the European Union and Canada, we demonstrate the applicability of our evaluative scheme. We find severe deficits in the PP cases that can all be attributed to the five key constituents. Although not representative, our analysis points to important challenges for water policy, particularly in the European multi-level context.

Armed conflict has the potential to disrupt water systems that are crucial to environmental and human wellbeing. Yet there is no comprehensive overview of scientific evidence on the impact of armed conflicts on water resources and their management. This paper assesses the relevant scientific evidence through a systematic literature review. We discern conceptual, empirical, and methodological approaches adopted in the reviewed publications and synthesize the overarching research results. Common research topics across the body of literature include the role of water resources in armed conflicts, either as a casualty or as a weapon used by conflict parties, and the implications of armed conflict on water resources management, such as basic service provision and water governance. The analysis also pinpoints the research field's focus on empirical studies based on a small number of cases, and highlights a lack of conceptual engagement with the notion of armed conflict. Future research on water resources and their management in conflict settings needs to be more transparent on conceptual frameworks and assumptions to facilitate knowledge integration across different studies.

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Collaboration is increasingly seen as an important aspect of successful water management, and yet it remains insufficiently understood. This paper examines how collaboration is influenced by the governance system that guides and organizes the related actions and interactions. Building upon an existing governance assessment tool, this paper provides the basis for predicting how supportive (or restrictive) a governance system will be towards collaboration, according to eight different governance system classes. The validity of this framework is reflected upon in case studies from five countries: Mexico, the Netherlands, Canada, Romania and Turkey. The collaborative processes in Mexico, Romania and Turkey are embedded in restrictive governance systems and show low levels of collaboration. The governance system in the Canadian case is assessed as neutral and shows a medium level of collaboration, whereas the governance system in the Netherlands shows high levels of collaboration and is assessed as supportive. The results are encouraging, as the case studies demonstrate the predicted influences of a governance system on collaboration. Yet, the case studies also highlight the potential importance of characteristics of the collaborative process and collaborating actors. Copyright © 2016 John Wiley & Sons, Ltd and ERP Environment