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This paper discusses definitions that have been developed and used in the study of polycentric governance. It offers conceptual refinements with the aim of reducing fuzziness, showing challenges of operationalization and application to an empirical setting—in other words, analyzing governance arrangements through the polycentricity lens. One defining element of polycentricity is the presence of "multiple decision‐making centers." This paper shows that this multiplicity is specific to the good/problem in focus, the center's tasks/responsibilities, the level in focus and analytical system boundaries. Functional overlapping among those centers is required to consider centers forming one system in relation to a good. These specificities should be examined for comparisons on polycentricity influencing the functioning of systems. The paper applies those conceptual refinements to the implementation of the EU Water Framework Directive in Berlin and Hamburg. It characterizes the two cases in terms of their polycentricity. It compares their functioning so far and how the latter relates to interactions and social interrelations. The polycentricity lens illuminates important features and differences: given an overall multiplicity of centers and a similar rule setting in both cities, the differences in the distribution of responsibilities and social interrelations led to a faster but less integrated implementation in Hamburg than in Berlin. The application of the proposed refinements yields insights into further work to be done in favor of theory‐building on the functioning of polycentric governance systems. ; Peer Reviewed

Supranational governance is being challenged by politicians and citizens around the EU as over-centralized and undemocratic. This book is premised on the idea that polycentric governance, developed by Vincent and Elinor Ostrom, is a fruitful place to start for addressing this challenge. Assessing the presence of, and potential for, polycentric governance within the EU means approaching established principles and practices from a new perspective. While the debate on these issues is rich, longstanding and interdisciplinary, it has proven difficult to sidestep the 'renationalisation/federalisation' dichotomy. The aim of this volume is not to reject the EU's institutional structure but provide a different benchmark for the assessment of its functioning. Polycentric theory highlights the importance of multilevel horizontal relationships within the EU - between states, but also between many sub-state actors, all the way down to individuals. This helps us answer the question: how do we achieve self-governance in an interdependent world?

Supranational governance is being challenged by politicians and citizens around the EU as over-centralized and undemocratic. This book is premised on the idea that polycentric governance, developed by Vincent and Elinor Ostrom, is a fruitful place to start for addressing this challenge. Assessing the presence of, and potential for, polycentric governance within the EU means approaching established principles and practices from a new perspective. While the debate on these issues is rich, longstanding and interdisciplinary, it has proven difficult to sidestep the 'renationalisation/federalisation' dichotomy. The aim of this volume is not to reject the EU's institutional structure but provide a different benchmark for the assessment of its functioning. Polycentric theory highlights the importance of multilevel horizontal relationships within the EU - between states, but also between many sub-state actors, all the way down to individuals. This helps us answer the question: how do we achieve self-governance in an interdependent world?

Climate change governance is in a state of enormous flux. New and more dynamic forms of governing are appearing around the international climate regime centred on the United Nations Framework Convention on Climate Change (UNFCCC). They appear to be emerging spontaneously from the bottom up, producing a more dispersed pattern of governing, which Nobel Laureate Elinor Ostrom famously described as 'polycentric'. This book brings together contributions from some of the world's foremost experts to provide the first systematic test of the ability of polycentric thinking to explain and enhance societal attempts to govern climate change. It is ideal for researchers in public policy, international relations, environmental science, environmental management, politics, law and public administration. It will also be useful on advanced courses in climate policy and governance, and for practitioners seeking incisive summaries of developments in particular sub-areas and sectors. This title is also available as Open Access on Cambridge Core.

The spatial-economic structure of Greece is dominated by two metropolitan regions, Thessalonica and, above all, Athens. For about four decades government policy has been addressing the Greek urban system but has not always been consistent. The main problem though is the large gap between the rhetoric of the plans and the final effects of the plans' implementation.