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This book offers an approach for multi-scale, integrated assessment of land use, water, energy, food, populations and environmental resources. The approach is based in resource accounting, providing insights through exploring the relationships between flows of goods, services, and materials, and the funds of natural, human, social, financial, physical, and economic capitals, at multiple scales. The text describes the conceptual, technical and applied aspects of the approach, using international case studies to illustrate the manner in which it can be applied and used to improve understanding of the interdependencies of land use, water, energy and food for decision making.

This paper explores the existing confusion around the conceptual definitions and interpretations of the term circular bioeconomy. The co-existence of diametrically opposite interpretations of the concept indicates lack of a serious discussion of its theoretical foundations. Two narratives on circular bioeconomy are explored in depth: (i) the new economic paradigm based on technological progress (the economics of technological promises) that seeks perpetual economic growth; (ii) an entropic (thermodynamic) narrative that reflects on the limits on economic growth imposed by nature. The latter narrative makes a distinction between primary, secondary and tertiary resource flows and helps to identify what can and cannot be re-circulated within the metabolic pattern of social-ecological systems. Adopting the biophysical view, it becomes clear that the industrial revolution represented a linearization of material and energy flows with the goal to overcome the low pace and density of biological transformations. The required level of productivity of production factors in contemporary developed economies (flows per hour of labor and per hectare of land use) is orders of magnitude larger than the pace and density of supply and sink capacity of natural processes. Relying on nature to 'close the loop' will simply slow down the economic process. ; This research was supported by the European Union's Horizon 2020 research and innovation programme under Grant Agreement No. 689669 (MAGIC) and the Spanish Ministry of Science, Innovation and Universities (MICINN) through the "María de Maeztu" program for Units of Excellence (MDM-2015-0552). This work reflects the author's view only; the funding agencies are not responsible for any use that may be made of the information it contains.

Recent years have seen an explosion of interest in the resource nexus. This has created the co-existence of different understandings and uses of the concept. In this regard, experiences in the EU H2020 project 'Moving towards adaptive governance in complexity: Informing nexus security' are consistent with findings reported in the literature: (i) The inconvenient message of the nexus is difficult to get across, it being incompatible with the currently dominant rosy narratives about sustainability. Indeed, from a historic perspective, the nexus can be seen as a revival of the ideological fight between cornucopians and neo-Malthusians; (ii) Silo structures in existing institutions are a problem for the governance of the nexus, and so is the resulting reductionist strategy of addressing and fixing one issue at the time; (iii) Scientific inquiry is currently not providing the quality inputs needed for a meaningful discussion of the resource nexus. Entanglement of resource flows is rooted in the complex metabolic pattern of social-ecological systems, the analysis of which requires a complex systems approach and relational analysis. Contemporary reductionist models simply make the nexus invisible to the analyst. ; The author's host institution, the Institute of Environmental Science and Technology (ICTA) of the Universitat Autònoma de Barcelona, has received financial support from the Spanish Ministry of Economy and Competitiveness through the "María de Maeztu" program for Units of Excellence (MDM-2015-0552).

The term "Jevons Paradox" flags the need to consider the different hierarchical scales at which a system under analysis changes its identity in response to an innovation. Accordingly, an analysis of the implications of the Jevons Paradox must abandon the realm of reductionism and deal with the complexity inherent in the issue of sustainability: when studying evolution and real change how can we define "what has to be sustained" in a system that continuously becomes something else? In an attempt to address this question this paper presents three theoretical concepts foreign to conventional scientific analysis: (i) complex adaptive systems—to address the peculiar characteristics of learning and self-producing systems; (ii) holons and holarchy—to explain the implications of the ambiguity found when observing the relation between functional and structural elements across different scales (steady-state vs. evolution); and (iii) Holling's adaptive cycle—to illustrate the existence of different phases in the evolutionary trajectory of a complex adaptive system interacting with its context in which either external or internal constraints can become limiting. These concepts are used to explain systemic drivers of the Jevons Paradox. Looking at society's thermodynamic foundations, sustainability is based on a dynamic balance of two contrasting principles regulating the evolution of complex adaptive systems: the minimum entropy production and the maximum energy flux. The co-existence of these two principles explains why in different situations innovation has to play a different role in the "sustainable development" of society: (i) when society is not subject to external biophysical constraints improvements in efficiency serve to increase the final consumption of society and expand its diversity of functions and structures; (ii) when the expansion of society is limited by external constraints improvements in efficiency should be used to avoid as much as possible the loss of the existing diversity. It is concluded that sustainability cannot be achieved by technological innovations alone, but requires a continuous process of institutional and behavioral adjustment.

We offer an interpretation of the concepts of integrity and quality of science based on semiotics. Science is a key component of the semiotic process in society, its role being the selection of representations of relevant events for guiding policy with the ultimate goal of preserving society's identity. The fitness of scientific information depends on the definition of its usefulness and relevance, and, therefore, on the identity of the 'self' of the semiotic process. Several distinct definitions of identity co-exist that are negotiated across levels (individuals, households, communities). Growing feelings of belonging to a post-truth world signal a failure in the preservation of the integrity of the semiotic process: scientific crises are coupled with social and political crises in an impredicative way. It is concluded that science should evolve from being a mere source of facts to a source of insights about how to deal with the tragedy of change. ; This research was supported by the European Union's Horizon 2020 research and innovation programme under Grant Agreement No. 689669 (MAGIC). The Institute of Environmental Science and Technology (ICTA) has received financial support from the Spanish Ministry of Science, Innovation and Universities, through the 'María de Maeztu' program for Units of Excellence (MDM-2015-0552). This work reflects the authors' view only; the funding agencies are not responsible for any use that may be made of the information it contains.

Unidad de excelencia María de Maeztu MdM-2015-0552 ; We offer an interpretation of the concepts of integrity and quality of science based on semiotics. Science is a key component of the semiotic process in society, its role being the selection of representations of relevant events for guiding policy with the ultimate goal of preserving society's identity. The fitness of scientific information depends on the definition of its usefulness and relevance, and, therefore, on the identity of the 'self' of the semiotic process. Several distinct definitions of identity co-exist that are negotiated across levels (individuals, households, communities). Growing feelings of belonging to a post-truth world signal a failure in the preservation of the integrity of the semiotic process: scientific crises are coupled with social and political crises in an impredicative way. It is concluded that science should evolve from being a mere source of facts to a source of insights about how to deal with the tragedy of change.