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Intro -- Title Page -- Dedication -- Chapter One: The Animal-mad Princess -- Chapter Two: Pets and Picnics -- Chapter Three: Feeding a Tiger -- Chapter Four: Big Cats and Little Cats -- Chapter Five: Lost and Found -- Chapter Six: The Great Curtain Climb -- Chapter Seven: A Kitten on the Loose -- Chapter Eight: A Leap in the Dark -- Chapter Nine: The Kitten and the King -- Copyright.

Nature and human society interact in complex ways with biodiversity underpinning the benefits that nature contributes to people (NCP) and human development often leading to significant losses in biodiversity through overexploitation and other drivers of change. These complex interactions result in large uncertainties that make it difficult for societies to resolve an appropriate course of collective action to adapt to or to mitigate change and to pursue sustainable livelihoods. Despite these uncertainties and complex interactions, it is important to understand the key interrelationships to develop effective management and policy strategies. However, social, economic and political conditions in the future may be very different from today. Scenarios and models provide means for exploring uncertainties about how different drivers of change might develop in the future and for considering how those changes might alter society's vulnerability and ability to take action. This improves understanding of the range of plausible futures in a region, alerts decision-makers to undesirable future impacts, and enables exploration of the effectiveness of policy options and management strategies. Here we develop an assessment of the range of plausible futures for Europe and Central Asia (ECA region) based on a review of exploratory scenarios. The consequences of these futures for nature, NCP and a good quality of life, as simulated by models taking account of uncertainties in projections of different drivers of change. We provide the foundation for understanding the key challenges that may be faced by society in moving towards a more sustainable future. In the assessment, we also describe what a sustainable future might look like by reviewing different visions of sustainable development and how these relate to the United Nations (UN), the Convention on Biological Diversity (CBD) and the long‐term EU agendas and sustainability objectives. Possible pathways for achieving such visions are then appraised based on a review of pathways and normative scenarios. This analysis provides an assessment of the alternative policy choices or management interventions that can be used by decision-makers to move towards meeting sustainability goals and thereby support a good quality of life for the people of ECA by mitigating biodiversity loss and promoting a balanced supply of NCP. The ECA assessment takes an integrated approach to assessing the relationship between nature and society and how they are influenced by natural and anthropogenic direct drivers as well as institutions and governance and other indirect drivers. Furthermore, it builds on the analysis presented in the previous chapters of the ECA report by finally forming the foundation to further develop options for governance, institutional arrangements, and private and public decision-making for implementing the future policy responses analysed in the scenario and modelling studies. ; peerReviewed

As the pressure to take action against global warming is growing in urgency, scenarios that incorporate multiple social, economic and environmental drivers become increasingly critical to support governments and other stakeholders in planning climate change mitigation or adaptation actions. This has led to the recent explosion of future scenario analyses at multiple scales, further accelerated since the development of the Intergovernmental Panel on Climate Change (IPCC) research community Shared Socioeconomic Pathways (SSPs) and Representative Concentration Pathways (RCPs). While RCPs have been widely applied to climate models to produce climate scenarios at multiple scales for investigating climate change impacts, adaptation and vulnerabilities (CCIAV), SSPs are only recently being scaled for different geographical and sectoral applications. This is seen in the UK where significant investment has produced the RCP-based UK Climate Projections (UKCP18), but no equivalent UK version of the SSPs exists. We address this need by developing a set of multi-driver qualitative and quantitative UK-SSPs, following a state-of-the-art scenario methodology that integrates national stakeholder knowledge on locally-relevant drivers and indicators with higher level information from European and global SSPs. This was achieved through an intensive participatory process that facilitated the combination of bottom-up and top-down approaches to develop a set of UK-specific SSPs that are locally comprehensive, yet consistent with the global and European SSPs. The resulting scenarios balance the importance of consistency and legitimacy, demonstrating that divergence is not necessarily the result of inconsistency, nor comes as a choice to contextualise narratives at the appropriate scale.

Impacts of socio-economic, political and climatic change on agricultural land systems are inherently uncertain. The role of regional and local-level actors is critical in developing effective policy responses that accommodate such uncertainty in a flexible and informed way across governance levels. This study identified potential regional challenges in arable land use systems, which may arise from climate and socio-economic change for two counties in western Hungary: Veszprém and Tolna. An empirically-grounded, agent-based model was developed from an extensive farmer household survey about local land use practices. The model was used to project future patterns of arable land use under four localised, stakeholder-driven scenarios of plausible future socio-economic and climate change. The results show strong differences in farmers' behaviour and current agricultural land use patterns between the two regions, highlighting the need to implement focused policy at the regional level. For instance, policy that encourages local food security may need to support improvements in the capacity of farmers to adapt to physical constraints in Veszprém and farmer access to social capital and environmental awareness in Tolna. It is further suggested that the two regions will experience different challenges to adaptation under possible future conditions (up to 2100). For example, Veszprém was projected to have increased fallow land under a scenario with high inequality, ineffective institutions and higher-end climate change, implying risks of land abandonment. By contrast, Tolna was projected to have a considerable decline in major cereals under a scenario assuming a de-globalising future with moderate climate change, inferring challenges to local food self-sufficiency. The study provides insight into how socio-economic and physical factors influence the selection of crop rotation plans by farmers in western Hungary and how farmer behaviour may affect future risks to agricultural land systems under environmental change.

Impacts of socio-economic, political and climatic change on agricultural land systems are inherently uncertain. The role of regional and local level actors is critical in developing effective policy responses that accommodate such uncertainty in a flexible and informed way across governance levels. This study identified potential regional challenges in arable land use systems, which may arise from climate and socio-economic change for two counties in western Hungary: Veszprém and Tolna. An empirically-grounded, agent-based model was developed from an extensive farmer household survey about local land use practices. The model was used to project future patterns of arable land use under four localised, stakeholder-driven scenarios of plausible future socio-economic and climate change. The results show strong differences in farmers' behaviour and current agricultural land use patterns between the two regions, highlighting the need to implement focused policy at the regional level. For instance, policy that encourages local food security may need to support improvements in the capacity of farmers to adapt to physical constraints in Veszprém and farmer access to social capital and environmental awareness in Tolna. It is further suggested that the two regions will experience different challenges to adaptation under possible future conditions (up to 2100). For example, Veszprém was projected to have increased fallow land under a scenario with high inequality, ineffective institutions and higher-end climate change, implying risks of land abandonment. By contrast, Tolna was projected to have a considerable decline in major cereals under a scenario assuming a de-globalising future with moderate climate change, inferring challenges to local food self-sufficiency. The study provides insight into how socio-economic and physical factors influence the selection of crop rotation plans by farmers in western Hungary and how farmer behaviour may affect future risks to agricultural land systems under environmental ...

As the pressure to take action against global warming is growing in urgency, scenarios that incorporate multiple social, economic and environmental drivers become increasingly critical to support governments and other stakeholders in planning climate change mitigation or adaptation actions. This has led to the recent explosion of future scenario analyses at multiple scales, further accelerated since the development of the Intergovernmental Panel on Climate Change (IPCC) research community Shared Socioeconomic Pathways (SSPs) and Representative Concentration Pathways (RCPs). While RCPs have been widely applied to climate models to produce climate scenarios at multiple scales for investigating climate change impacts, adaptation and vulnerabilities (CCIAV), SSPs are only recently being scaled for different geographical and sectoral applications. This is seen in the UK where significant investment has produced the RCP-based UK Climate Projections (UKCP18), but no equivalent UK version of the SSPs exists. We address this need by developing a set of multi-driver qualitative and quantitative UK-SSPs, following a state-of-the-art scenario methodology that integrates national stakeholder knowledge on locally-relevant drivers and indicators with higher level information from European and global SSPs. This was achieved through an intensive participatory process that facilitated the combination of bottom-up and top-down approaches to develop a set of UK-specific SSPs that are locally comprehensive, yet consistent with the global and European SSPs. The resulting scenarios balance the importance of consistency and legitimacy, demonstrating that divergence is not necessarily the result of inconsistency, nor comes as a choice to contextualise narratives at the appropriate scale.

Priorities for future sustainable development within Europe and Central Asia are formulated in visions by governments and societal actors. Integrated scenario and modelling studies enable the assessment of impacts on nature, nature's contributions to people, and a good quality of life resulting from these priorities, and help to co-design and codeliver appropriate pathways to sustainable futures (established but incomplete) (5.1.2, 5.4.2, 5.4.3, 5.5.2). Priorities for future sustainable development are captured in regional visions, which describe a future desired by society or parts of society in Europe and Central Asia. Matching these priorities to the Sustainable Development Goals and Aichi Biodiversity Targets revealed that regional priorities include sustainable economic growth in tandem with sustainable industrialization (Goal 8, Goal 9), sustainable agriculture, forestry, aquaculture and management of natural resources (Goal 15, Target 7), all promoted by sustainable consumption and production patterns (Goal 12, Target 4). Climate action and sustainable energy (Goal 13, Goal 7) are also priorities. Reduced inequalities (Goal 10), gender equality (Goal 5) and peace, justice and strong institutions (Goal 16), as well as representation of a diverse range of values, are less emphasized (established but incomplete) (5.1.2, 5.4.2, 5.4.3). Integrated assessments of future interactions between the priorities for sustainable development and nature and its contributions to people, which support proactive decisionmaking that anticipates change, mitigates undesirable trade-offs and fosters societal transformation in pursuit of a good quality of life, are rare due to the complexity of human and environment interdependencies (well established) (5.1.1, 5.3.1, 5.5.3, 5.5.4). Nevertheless, ignoring these complexities is likely to cause undesired trade-offs and to prevent the realization of synergies (5.3.1). Cross-sectoral and cross-scale integration of adaptation, mitigation and transformative actions and policies by multiple actors is key to the co-design and co-delivery of appropriate pathways to realize visions of future sustainable development (established but incomplete) (5.4.2, 5.4.3, 5.5.2, 5.5.3, 5.5.5, 5.5.6). The choices made by decision-makers and societal actors are expected to lead to large differences in future impacts on nature, nature's contributions to people, and good quality of life within Europe and Central Asia (established but incomplete) (5.2.3, 5.3.3, 5.3.4). More positive impacts are projected under futures that assume proactive decision-making on environmental issues and promote a more holistic approach to managing human and environmental systems which supports multifunctionality and multiple contributions from nature to people (established but incomplete) (5.2.3, 5.3.3, 5.3.4). Projecting historical trends into the future under a businessas- usual scenario results in stable trends in nature (e.g. reflected in biodiversity vulnerability indices), negative trends in nature's regulating contributions (e.g. regulation of climate or hazards and extreme events) and mixed trends in nature's material contributions (e.g. food production) (established but incomplete) (5.3.3, 5.6.1). Different assumptions about future trends in drivers lead to widely varying projected impacts on nature, nature's contributions to people and a good quality of life. Under economic optimism scenarios, where global developments are steered by economic growth and environmental problems are only dealt with when solutions are of economic interest, an increase in the provision of most of nature's material contributions to people (e.g. food and timber) is projected associated with a general decline in nature and its regulating contributions to people (e.g. air and water quality regulation) (established but incomplete) (5.3.3, 5.6.1). Under regional competition scenarios there is a growing gap between rich and poor, increasing problems with crime, violence and terrorism, and strong trade barriers. Consequently, its impacts are highly mixed with generally large declines in nature (e.g. habitat maintenance and creation) and the most negative impacts of all scenarios on nature's non-material contributions to people (e.g. learning and inspiration) and good quality of life indicators (e.g. health and well-being) (established but incomplete) (5.3.3, 5.6.1). Inequality scenarios, which assume increasing economic, political and social inequalities, where power becomes concentrated in a relatively small political and business elite who invest in green technology, result in negative impacts on nature's regulating contributions to people (established CHAPTER 5. CURRENT AND FUTURE INTERACTIONS BETWEEN NATURE AND SOCIETY 575 but incomplete), but mixed or unclear impacts on other indicators (inconclusive) (5.3.3, 5.6.1). Under global sustainable development scenarios, which are characterized by an increasingly proactive attitude of global policymakers towards environmental issues and a high level of regulation, positive impacts are projected for nature and its regulating contributions to people. Predominantly positive trends are also projected for nature's material contributions to people and good quality of life indicators, with some regional variation (established but incomplete) (5.3.3, 5.6.1). Under regional sustainability scenarios, which show increased concern for environmental and social sustainability and a shift toward local and regional decision-making, similar impacts are projected as for global sustainable development. Regional sustainability, however, leads to slightly fewer benefits for nature's regulating and material contributions to people (with decreases in food provision) than global sustainable development and more positive impacts on nature's non-material contributions to people and good quality of life, particularly traditional knowledge and supporting identities reflecting the local focus of the regional sustainability scenario (established but incomplete) (5.3.3, 5.6.1). Trade-offs between nature and different contributions from nature to people are projected under all plausible futures for Europe and Central Asia (established but incomplete) (5.3.3, 5.3.4). How these trade-offs are resolved depends on political and societal value judgements within each plausible future. In general, those futures where environmental issues are mainstreamed across sectors are more successful in mitigating undesirable cross-sector trade-offs, resulting in positive impacts across a broad range of indicators concerning nature, nature's contributions to people and good quality of life indicators (established but incomplete) (5.3.3, 5.6.1). Trade-offs between nature's material and regulating contributions to people are commonly projected in the economic optimism and regional competition scenarios, which tend to promote a limited number of nature's material contributions to people. For example, increases in food provision (generally associated with the expansion of agricultural land or the intensification of livestock production and fish captures) are often associated with decreases in the provision of nature's regulating contributions to people (e.g. prevention of soil erosion, regulation of water quality and quantity) and nature values. Similar trade-offs were projected between increases in timber provision and decreases in nature's regulating (e.g. carbon sequestration) and non-material (e.g. aesthetic value) contributions to people. Such trade-offs lead to strong positive effects in nature's contributions to people with market values and negative effects in nature's contributions to people without market values (established but incomplete) (5.3.3, 5.6.1). Trade-offs were also apparent under the sustainability scenario archetypes, particularly in relation to the use of land and water (e.g. effects of agricultural extensification – the opposite of agricultural intensification - or increases in bioenergy croplands on other land uses and biodiversity) (established but incomplete) (5.6.1). However, such scenarios proactively deal with such trade-offs through, for example, political choices aiming to maximize synergizes through mainstreaming and multifunctionality (global sustainable development) or through societal choices to live less resource-intensive lifestyles and, hence, reduce demand for nature's material contributions to people (regional sustainability). Impacts of plausible futures differ across the regions of Europe and Central Asia. Hence, regional and national decision-makers face different trade-offs between nature and its various contributions to people. Cooperation between countries opens up possibilities to mitigate undesirable crossscale impacts and to capitalize on opportunities (established but incomplete) (5.3.3). In Central Asia, significant water shortages are projected in the long-term. This affects farmers' choices between intensive crop production and more sustainable production with resulting impacts on nature's regulating contributions to people, such as water quality (established but incomplete) (5.3.3). Similar impacts on water stress are projected under future scenarios for Central Europe, including decreases in multiple contributions from nature to people from wetlands (established but incomplete) (5.3.3). Transboundary and integrated water management strategies that protect minimum water levels for the environment are projected to mitigate these negative impacts. In Eastern Europe, particularly Russia, trade-offs between wood extraction and carbon sequestration are projected. Sustainable forest management and reforestation of areas set aside from agricultural activities are suggested as having the potential to mitigate such trade-offs. Similarly, in mountain systems in Central and Western Europe and in marine systems in all subregions adaptive management strategies are projected to address the vulnerability of the majority of nature's contributions to people (established but incomplete) (5.3.3). In the European Union (EU), significant differences between northern and southern countries are projected. Most scenarios indicate increases in agricultural production for food, feed and bioenergy for northern European Union countries, while decreases in agricultural and timber production, as well as increases in water stress, are projected for southern European Union countries. The latter is projected to have considerable negative impacts on nature's non-material contributions to people, such as national heritage and tourism-related services dependent on local food production. Scenarios which included international coordination of adaptive measures across THE REGIONAL ASSESSMENT REPORT ON BIODIVERSITY AND ECOSYSTEM SERVICES FOR EUROPE AND CENTRAL ASIA 576 geographical areas were projected to have better capacity to cope with, or mitigate, undesirable cross-scale impacts (established but incomplete) (5.3.3). Future impacts of drivers of change on nature and its contributions to people in Europe and Central Asia are likely to be underestimated because scenario studies are dominated by a few individual drivers (e.g. climate change) and often omit other important drivers (e.g. pollution) that may adversely affect their impacts (well established) (5.2.2, 5.3.2). Scenario studies predominantly focus on single direct drivers and fail to capture interactions between drivers (well established) (5.2.2, 5.3.2). Climate change is the most represented single direct driver in scenarios of biodiversity and ecosystem change. By contrast other direct drivers, such as pollution and invasive alien species, which are known to have an adverse impact on nature and its contributions to people, are poorly represented in scenario studies (well established) (5.2.2). Single-driver scenarios fail to capture various dynamics such as feedbacks and synergies between and amongst indirect and direct drivers operating at different scales. Policy approaches that consider single drivers or single sectors are unlikely to successfully address environmental problems as they do not consider trade-offs between different drivers, impacts and responses. Integrated, multi-driver scenario studies offer a more realistic assessment of impacts to inform robust decision-making about future sustainable development pathways that avoid unintended consequences (established but incomplete) (5.2.1, 5.2.2, 5.2.4, 5.3.1, 5.3.3, 5.3.4, 5.4.4, 5.4.5, 5.5.5). Priorities for future sustainable development expressed by governments and other societal actors for Europe and Central Asia are more widely achieved under plausible futures that consider a diverse range of values (established but incomplete) (5.3.4, 5.5.4, 5.5.5, 5.6.1). Recognizing the different time frame of the scenarios of plausible futures (often 2050 or later) to those stated in the Sustainable Development Goals and Aichi Biodiversity Targets (2030 or 2020), continuing current trends under a business-as-usual scenario is estimated to lead to failure in achieving most of the Sustainable Development Goals (13 out of 17), but mixed effects on achieving the Aichi Biodiversity Targets (8 achieved). Economic optimism is estimated to have a mixed level of success in achieving the goals (8 achieved), but would fail to achieve the majority of the targets (16 out of 20), while regional competition fails to reach the majority of all goals and targets (15 and 19, respectively). The focus of these scenarios on instrumental values and individualistic perspectives, with little acknowledgement of relational or intrinsic values, means they are unlikely to offer effective sustainable solutions to environmental and social challenges (established but incomplete) (5.3.4, 5.6.1). In contrast, the sustainability scenarios (regional sustainability and global sustainable development) are estimated to achieve the majority of the Sustainable Development Goals and Aichi Biodiversity Targets. Such scenarios attempt to support nature and its multiple nature's contributions to people and aspects of a good quality of life. Thus, they represent a greater diversity of values, but often at the acceptance of lower, or more extensive, production of nature's material contributions to people (established but incomplete) (5.3.4, 5.6.1). Multiple alternative pathways exist to achieve the priorities for future sustainable development set by governments and societal actors within Europe and Central Asia and in particular for mitigating tradeoffs between nature and nature's contributions to people (established but incomplete) (5.5.2). The most promising pathways include long-term societal transformation through continuous education, knowledge sharing and participatory decisionmaking. Such pathways emphasize nature's regulating contributions to people and the importance of relational values in facilitating a holistic and systematic consideration of nature and nature´s contribution to people across sectors and scales (established but incomplete) (5.5.3, 5.5.4). Four types of pathways have been developed to address trade-offs between food, water, energy, climate and biodiversity at different scales (5.5.2). Green economy pathways focus on sustainable intensification and diversification of production activities coupled with the protection and restoration of nature. Low carbon transformation pathways focus on biofuel production, reforestation and forest management. Both types of pathways include actions related to technological innovation, land sparing or land sharing. Green economy and low carbon transformation pathways do not fully mitigate trade-offs between nature's material contributions to people, nature conservation, and nature's regulating and non-material contributions to people (established but incomplete) (5.5.2, 5.5.4). Ecotopian solutions pathways focus on radical social innovation to achieve local food and energy self-sufficiency and the production of multiple contributions from nature to people. They include actions on multifunctionality within individual land uses with connecting green infrastructure, urban design and food production (established but incomplete) (5.5.2, 5.5.4). Transition movements pathways emphasize a change towards relational values, promoting resource-sparing lifestyles, continuous education, new urban spatial structures and innovative forms of agriculture where different knowledge systems are combined with technological innovation. Transformation is achieved through local empowerment, participatory decision-making processes, community actions and voluntary agreements. As opposed to other pathways, transition movements CHAPTER 5. CURRENT AND FUTURE INTERACTIONS BETWEEN NATURE AND SOCIETY 577 pathways address all of the Sustainable Development Goals identified as being important in the Europe and Central Asia visions (5.1.2, 5.5.4), except Goal 7 (sustainable energy). The narrative offers the broadest set of actions targeting elements of nature, multiple contributions from nature to people (material, regulating and non-material) and multiple dimensions of a good quality of life (established but incomplete) (5.5.2, 5.5.4, 5.6.1). Different sets of actions and combinations of policy instruments are suggested by the different pathways. Joint instruments suggested across pathways give priority to participation, education and awareness raising, and often cross-scale integration and mainstreaming of environmental objectives across sectors (established but incomplete) (5.5.2, 5.5.3, 5.5.4, 5.5.6). The green economy and low carbon transformation pathways build towards sustainability without challenging the economic growth paradigm. They are implemented through combinations of top-down legal and regulatory instruments mixed with economic and financial instruments designed at regional (European Union) or national levels (Eastern Europe and Central Asia). Such pathways are often formulated at a sectoral level, and integration across sectoral pathways is critical. However, because green economy and low carbon transformation pathways do not fully mitigate trade-offs, they may not be sufficient alone to achieve sustainability (established but incomplete) (5.5.2, 5.5.4, 5.6.1). The trade-offs are better addressed by diverse local bottom-up transition movements or ecotopian solutions pathways (5.5.2). Such pathways reconsider fundamental values and lifestyles through sets of actions focusing on less resource-intensive lifestyles, education, knowledge sharing, good social relations and equity (e.g. food and dietary patterns, transport, energy and consumption patterns). Transition movements pathways also develop bottom-up transformative capabilities by combining rights-based instruments and customary norms (including indigenous and local knowledge) and social and information instruments (established but incomplete) (5.5.3, 5.5.4). The sets of actions proposed in the pathways are not mutually exclusive and can be combined. For example, actions from green economy and low carbon transformation pathways may pave the way towards more transformative transition movements pathways. Moreover, future transitions to sustainability may be fostered through cross-scale integration and mainstreaming of environmental issues into sectoral policies and decisions, along with nurturing diverse social, institutional and technological experiments (established but incomplete) (5.5.5). Participatory scenario, vision and pathway development is a powerful approach for knowledge co-production and has great potential for the explicit inclusion of indigenous and local knowledge (established but incomplete) (5.4.3, 5.5.1, 5.5.2, 5.5.6, 5.6.2). Many scenario, vision and pathways exercises include local stakeholders and their valuable knowledge and practices. However, the use of different knowledge systems, such as indigenous and local knowledge, was rarely explicitly mentioned in studies (5.6.2). Explicit examples that included indigenous and local knowledge (see Boxes 5.2, 5.6 and 5.10), show a clear added value from combining different forms of knowledge with technological innovations, and cultural diversity, norms and customary rights when pursuing goals of sustainable development (5.2.2, 5.5.2, 5.5.3, 5.5.6). Knowledge gaps and resulting uncertainties in exploring future interactions between nature and society are substantial because integrated assessments of future impacts on nature, nature's contributions to people and a good quality of life that take account of the complex interdependencies in human and environmental systems are rare (well established) (5.6.2). Very few studies were available for Central Asia and to a lesser extent for Eastern Europe (well established) (5.6.2). Less information was also available for marine systems than for terrestrial and freshwater systems (well established) (5.6.2). Few integrated scenario and modelling studies include indicators of nature's nonmaterial contributions to people and good quality of life (5.3.2, 5.5.1, 5.6.2) and therefore existing assessments of synergies and trade-offs are limited in the interactions and feedbacks they represent (well established) (5.3.2). No studies were found that assessed future flows of nature's contributions to people across countries, which would have been important to assess the impacts of the scenarios and pathways for Europe and Central Asia on other parts of the world (well established) (5.6.2). There is also a significant gap in the current literature in recognizing the diversity of values, with the focus being mainly on instrumental values (well established) (5.6.2). Finally, scenario and modelling studies include many uncertainties in their projections of the future resulting from input data, scenario assumptions, model structure and propagation of uncertainties across the integrated components of the systems, which should be borne in mind when interpreting their results (well established).

Scenarios are a useful tool to explore possible futures of social-ecological systems. The number of scenarios has increased dramatically over recent decades, with a large diversity in temporal and spatial scales, purposes, themes, development methods, and content. Scenario archetypes generically describe future developments and can be useful in meaningfully classifying scenarios, structuring and summarizing the overwhelming amount of information, and enabling scientific outputs to more effectively interface with decision-making frameworks. The Intergovernmental Platform for Biodiversity and Ecosystem Services (IPBES) faced this challenge and used scenario archetypes in its assessment of future interactions between nature and society. We describe the use of scenario archetypes in the IPBES Regional Assessment of Europe and Central Asia. Six scenario archetypes for the region are described in terms of their driver assumptions and impacts on nature (including biodiversity) and its contributions to people (including ecosystem services): Business-as-usual, economic optimism, regional competition, regional sustainability, global sustainable development, and inequality. The analysis shows that trade-offs between nature's contributions to people are projected under different scenario archetypes. However, the means of resolving these trade-offs depend on differing political and societal value judgements within each scenario archetype. Scenarios that include proactive decision making on environmental issues, environmental management approaches that support multifunctionality, and mainstreaming environmental issues across sectors, are generally more successful in mitigating tradeoffs than isolated environmental policies. Furthermore, those scenario archetypes that focus on achieving a balanced supply of nature's contributions to people and that incorporate a diversity of values are estimated to achieve more policy goals and targets, such as the UN Sustainable Development Goals and the Convention on Biological Diversity Aichi targets. The scenario archetypes approach is shown to be helpful in supporting science-policy dialogue for proactive decision making that anticipates change, mitigates undesirable trade-offs, and fosters societal transformation in pursuit of sustainable development ; The authors are grateful to the IPBES Europe and Central Asia Expert Group and Technical Support Unit for all their input support, and collaboration over the past three years. Paula Harrison and Ian Holman acknowledge financial support from the UK Department of Environment, Food and Rural Affairs and the EUfunded IMPRESSIONS project (Grant Agreement 603416). Martin Schlaepfer received support from ENVIROSPACE, University of Geneva. Antoine Guisan acknowledges additional funding from the University of Lausanne to support Anthony Sonrel's contribution to the assessment

Scenarios are a useful tool to explore possible futures of social-ecological systems. The number of scenarios has increased dramatically over recent decades, with a large diversity in temporal and spatial scales, purposes, themes, development methods, and content. Scenario archetypes generically describe future developments and can be useful in meaningfully classifying scenarios, structuring and summarizing the overwhelming amount of information, and enabling scientific outputs to more effectively interface with decision-making frameworks. The Intergovernmental Platform for Biodiversity and Ecosystem Services (IPBES) faced this challenge and used scenario archetypes in its assessment of future interactions between nature and society. We describe the use of scenario archetypes in the IPBES Regional Assessment of Europe and Central Asia. Six scenario archetypes for the region are described in terms of their driver assumptions and impacts on nature (including biodiversity) and its contributions to people (including ecosystem services): business-as-usual, economic optimism, regional competition, regional sustainability, global sustainable development, and inequality. The analysis shows that trade-offs between nature's contributions to people are projected under different scenario archetypes. However, the means of resolving these trade-offs depend on differing political and societal value judgements within each scenario archetype. Scenarios that include proactive decision making on environmental issues, environmental management approaches that support multifunctionality, and mainstreaming environmental issues across sectors, are generally more successful in mitigating tradeoffs than isolated environmental policies. Furthermore, those scenario archetypes that focus on achieving a balanced supply of nature's contributions to people and that incorporate a diversity of values are estimated to achieve more policy goals and targets, such as the UN Sustainable Development Goals and the Convention on Biological Diversity Aichi targets. The scenario archetypes approach is shown to be helpful in supporting science-policy dialogue for proactive decision making that anticipates change, mitigates undesirable trade-offs, and fosters societal transformation in pursuit of sustainable development.