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Abstract: Debates on degrowth have mainly focused on theoretical issues, specially around the unsustainability of the current economic model based on growth. Along those lines some scholars have dealt with the opportunities and barriers to voluntary social action for degrowth at a general level. Notwithstanding the key importance of such debates, we argue that local strategies to move towards degrowth are still to be explored. Departing from the specific case of water, in this paper we interrogate the compatibility of non-conventional centralised and decentralised water supply technologies (desalination, reclaimed water reuse, greywater reuse and rainwater harvesting) with degrowth principles. Taking as a case study the Metropolitan Area of Barcelona (Spain), a social multi-criteria evaluation has been performed to explore the feasibility, desirability and acceptability of both models. The paper aims to explore the pros and cons of the different water alternatives in two different (and hypothetic) societies: one based on growth (business-as-usual) and one based on degrowth. The technical analysis reveals that rainwater harvesting and reclaimed water reuse are the most preferred alternatives from a degrowth perspective while reclaimed water reuse and desalination are the most preferred alternatives from a growth perspective. The social multi-criteria analysis also serves to unveil which social actors may favour or block the adoption of each alternative. Notwithstanding that most social groups see desalination as the least desired option, this is the hegemonic non-conventional source in Spain which evidences the prevalence of growth discourses in water management. Local decision-makers, city council managers and environmental groups clearly opt for the promotion of rainwater harvesting and as a result, they appear as potential allies to promote degrowth in water consumption. The social multi-criteria evaluation helps to elucidate the main challenges that need to be addressed in the pursuit of a more sustainable and equitable water management. [Copyright &y& Elsevier]

Abstract: There has been a growing literature on alternative food networks (AFNs); structures that reconfigure the systems of production, distribution and consumption of food. Part of this literature emphasises the local scale and the idea of proximity. In a world that is increasingly urban, AFNs at a local scale can be more easily developed by linking peri-urban farmlands and cities. However, agriculture in the rural–urban fringe struggles to survive in the face of urban pressures and sprawl; a process which undermines viable agricultural production in the city''s countryside. A widely used strategy to address these pressures has been farmland protection, undertaken in different ways depending on the legal framework of particular countries. This paper considers farmland conservation and AFNs development issues through a case-study of the Baix Llobregat Agricultural Park (BLAP) in metropolitan Barcelona. It concludes that AFNs in peri-urban areas are only possible if farmland preservation is guaranteed, and that the former does not come as a direct consequence of the latter. The specific conditions in which both can occur will be of interest for scholars as well as policy-makers and planners. [Copyright &y& Elsevier]

Abstract: Many urban areas suffer water scarcity but paradoxically, a local source of water such as rainwater is mostly treated as a risk rather than as a valuable resource. Scepticism regarding the use of rainwater harvesting technologies still prevails today, particularly in low precipitation areas. However, some regions such as the Metropolitan Area of Barcelona (MAB) have started to promote the use of rainwater through specific regulations and incentives. This paper aims to examine the use of rainwater harvesting in the two main types of buildings prevalent in the MAB by analysing users’ practices and perceptions, drinking water savings and economic costs. Despite low precipitation inputs and a high variability of precipitation, daily balances show that toilet flushing demand of a single family house can be practically met with a relatively small tank. Rooftop rainwater can also meet more than 60% of the landscape irrigation demand in both single and multi-family buildings. The main drawback is the long pay-back period that rainwater harvesting systems present today. Nevertheless, it is remarkable that in multi-family buildings residents usually take no notice of the costs associated with the system. In contrast, benefits for the whole society are usually much more appreciated. Users’ reactions and their level of satisfaction towards rainwater harvesting systems suggest that both regulations and subsidies are good strategies to advocate and expand rainwater harvesting technologies in residential areas. However, a multidirectional learning environment needs to be promoted to ensure a proper use of rainwater harvesting systems and risk minimisation. [Copyright &y& Elsevier]

Abstract: This paper provides an analysis of human mobility data in an urban area using the amount of available bikes in the stations of the community bicycle program Bicing in Barcelona. Based on data sampled from the operator’s website, it is possible to detect temporal and geographic mobility patterns within the city. These patterns are applied to predict the number of available bikes for any station some minutes/hours ahead. The predictions could be used to improve the bicycle program and the information given to the users via the Bicing website. [Copyright &y& Elsevier]