The social solidarity economy is an approach to the production and consumption of goods, services and knowledge that promises to address contemporary economic, social and environmental crises more effectively than business as usual. The paper employs the concept of commons ecologies to examine the practices, relationships and interactions among actors and organisations in the social solidarity economy, as well as between them and the mainstream economy, which shape the field and its degree of autonomy in relation to capitalism, through a process defined as boundary commoning. Such process shapes both local and regional commons ecologies, as well as the participation of local and regional actors in wider networks at national, international and global levels. The paper takes a case study‐based approach to identify practices, relationships and interactions of commons ecologies in relation to selected community‐led initiatives in the UK, Portugal, Brazil and Senegal. Each case study illuminates different qualities of local/regional commons ecologies and their forms of engagement with wider networks. Further, the paper shows that these cases demonstrate how the social solidarity economy may facilitate delivery of the Sustainable Development Goals in a distinctive way. In each case, SSE acts as a vehicle for expressing participants' values and principles consistent with those underlying the SDGs. Local implementation of SDGs is thus an in‐built feature of these commons ecologies. The participation of community‐led initiatives in international and global networks offers opportunities to learn from local level experiences and successes, potentially strengthening SDG implementation more generally.

This article explores the scope and limitations of Radical Environmentalism as a source of practices of "commoning". The application of the radical environmental "Healing Biotope" model in Tamera, an ecovillage located in southern Portugal, further expands the understanding of "commoning" as a social process, as well as of Radical Environmentalism as a cognitive framework. This article distinguishes between the technical and political dimensions of "commoning". It also identifies two structuring dimensions of Radical Environmentalism, hereby called integrative rationality and the experiential action research and learning methodology. These dimensions support the technical aspect of "commoning" in Tamera by promoting epistemic and methodological coherence between social and environmental technologies. Despite their contested scientific validity, they contribute to the sustainability of the project by promoting synergies between ecological regeneration and social governance. However, they have limited capacity to address the political dimension of "commoning", related with rank and socio-economic inequalities among members.

Most literature related to the study of processes of knowledge production within social movements neglects how power relations between participants rooted on structural inequalities shape such processes. It also underestimates how such inequalities and the very dynamics of movements intersect in the setting up of the 'boundaries' of 'insidership' and 'outsidership', as well as of the terms implicit in different forms of participation. This article makes a review of theoretical and methodological literature that is relevant to the study of processes of knowledge production within social movements. Based on that review, it proposes the concept of 'multi-level power dynamics' as a tool for future research on the way in which such processes are shaped by power relations between movement members endowed with, or experiencing a differentiated access to different forms of knowledge, as well as with actors within the state and networks promoting the diffusion of ideas and strategies. The importance of power dynamics intrinsic to processes of knowledge productionThis article is based on an understanding of processes of knowledge production within social movements as the intentional activities by which movements produce, process and diffuse information about their participants, their own socio-economic context and the ruling relations which structure their lives. Such processes include activities of collection, treatment and diffusion of information such as research, education and training and networking with the specific purpose of debating and diffusing knowledge. This concept includes educational and training initiatives, as well as exchange of information and deliberation within activist networks, as these activities imply a treatment of previously gathered knowledge, which very often implies the addition of new information. That is the case, for example, of critical education programs following the pedagogy of Paulo Freire, which rely heavily on information brought by the student on her or his experience and the context in which it is embedded.Social scientific research on processes of knowledge production by social movements has so far focused on four aspects: its content, the

This paper explores the actual and potential contributions of community-led initiatives (CLIs) to the Sustainable Development Goals (SDGs). As examples of selfdetermined practical action for sustainability and social justice, CLIs prefigure many of the intended outcomes of the SDGs. Existing evidence shows that CLIs are already contributing, at local scale, to almost all of the SDGs, and achieving particular success in bringing different goals into synergy. However, these achievements are based on ethics, guiding philosophies, issue framings, practical goals and ways of organising that differ significantly from those behind the formulation and delivery of the SDGs.Embracing those differences, and with them greater plurality and ongoing critical self-reflection, would allow the SDGs to transcend certain self-limiting contradictions, particularly concerning the role of economic growth. Such a shift in orientation is essential if the SDGs are to move from reinforcing to challenging the root causes of unsustainability and injustice.

This article sheds light on the exclusionary dynamics that emerge when the construction of commons-based alternative political ecologies does not take political economy considerations into account. It analyses the relationship between Tamera -Healing Biotope I, and the ecosystem, population and institutions of the region of southwestern Alentejo, Portugal, where this ecovillage is located. Tamera is based on a prefigurative process of "commoning", transplanted from Central European counter-culture, which created a "borderland" that spatially segregates and at the same time creates a point of contact between two contrasting cultural, ecological and socio-economic realities. However, maintaining the "borderland" granted the community access to the resources needed to develop its vision, while countering existing regulations, although eventually involving the state in the development of a new regulatory framework. Since the mid2000s, Tamera has been engaging in cultural dialogue with the local population, with the support of the municipality. The analysis raises the question of how to develop regulatory and financial instruments that support ecovillages in promoting inclusive strategies of economic sustainability, integrating them in placebased dynamics of regional development. The specificities of their biophysical and social processes must be taken into account, as well as their vocation as "testfields" for sustainability. Keywords: Regional political ecology, ecovillages, regional development, social exclusion, cultural dialogue, regulatory innovation, Portugal RésuméCet article traite de la dynamique d'exclusion qui peuvent émerger lors de la construction écologies politiques alternatives basées sur la gestion collective des biens communs ne tient pas compte des considérations d'économie politique. Il est basé sur l'étude de cas de la relation entre Tamera -Biotope guérison I, un écovillage situé dans la municipalité de Odemira (Portugal) et de l'écosystème, la population et les institutions de la région. La construction de Tamera est basée sur un processus de préfiguration « commoning » qui a été transplanté contre-culture en Europe centrale au sud-ouest de l'Alentejo. Ce processus a créé une « zone frontalière » qui sépare en même temps, crée un point de contact entre deux réalités culturelles, écologiques et socio-économiques contrastées. Cependant, cette « zone frontalière » a accordé l'accès communautaire aux ressources nécessaires pour développer leur point de vue, contrairement aux règlements en vigueur et impliquant l'Etat dans l'élaboration d'un nouveau cadre réglementaire. Depuis des années mi2000s, Tamera a fait la promotion d'un dialogue culturel avec la population locale, en comptant sur le soutien de la municipalité. L'analyse soulève la question de savoir comment élaborer des instruments réglementaires ResumenEste artículo aborda las dinámicas de exclusión que pueden emerger cuando la construcción de ecologías políticas alternativas basada en la gestión colectiva de bienes comunes no tie...