Concerns about global environmental change challenge long term ecological research (LTER) to go beyond traditional disciplinary scientific research to produce knowledge that can guide society toward more sustainable development. Reporting the outcomes of a 2 d interdisciplinary workshop, this article proposes novel concepts to substantially expand LTER by including the human dimension. We feel that such an integration warrants the insertion of a new letter in the acronym, changing it from LTER to LTSER, "Long-Term Socioecological Research," with a focus on coupled socioecological systems. We discuss scientific challenges such as the necessity to link biophysical processes to governance and communication, the need to consider patterns and processes across several spatial and temporal scales, and the difficulties of combining data from in-situ measurements with statistical data, cadastral surveys, and soft knowledge from the humanities. We stress the importance of including prefossil fuel system baseline data as well as maintaining the often delicate balance between monitoring and predictive or explanatory modeling. Moreover, it is challenging to organize a continuous process of cross-fertilization between rich descriptive and causal-analytic local case studies and theory/modeling-oriented generalizations. Conceptual insights are used to derive conclusions for the design of infrastructures needed for long-term socioecological research.

Climate change can be addressed by mitigation (reducing the sources or enhancing the sinks of greenhouse gases) and adaptation (reducing the impacts of climate change). Mitigation and adaptation present two fundamentally dissimilar approaches whose differences are now well documented. Forest ecosystems play an important role in both adaptation and mitigation and there is a need to explore the linkages between these two options in order to understand their trade-offs and synergies. In forests, potential trade-offs can be observed between global ecosystem services, such as the carbon sequestration relevant for mitigation, and the local ecosystem services that are relevant for adaptation. In addition, mitigation projects can facilitate or hinder the adaptation of local people to climate change, whereas adaptation projects can affect ecosystems and their potential to sequester carbon. Linkages between adaptation and mitigation can also be observed in policies, but few climate change or forest policies have addressed these linkages in the forestry sector. This paper presents examples of linkages between adaptation and mitigation in Latin American forests. Through case studies, we investigate the approaches and reasons for integrating adaptation into mitigation projects or mitigation into OPEN ACCESSForests 2011, 2 432adaptation projects. We also analyze the opportunities for mainstreaming adaptation-mitigation linkages into forest or climate change policies.

A major challenge for many researchers and practitioners relates to how to recognize and address cross-scale dynamics in space and over time in order to design and implement effective governance arrangements. This editorial provides an overview of the concept of multi-level governance (MLG). In particular we highlight definitional issues, why the concept matters as well as more practical concerns related to the processes and structure of multi-level governance. It is increasingly clear that multi-level governance of forest resources involves complex interactions of state, private and civil society actors at various levels, and institutions linking higher levels of social and political organization. Local communities are increasingly connected to global networks and influences. This creates new opportunities to learn and address problems but may also introduce new pressures and risks. We conclude by stressing the need for a much complex approach to the varieties of MLG to better understand how policies work as instruments of governance and to organize communities within systems of power and authority.

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Pre-colonial patterns of trade in West Africa included exchanges of shea in periodic local and regional markets. The collection, processing and marketing of shea products in such markets continues to be predominantly by women to both meet subsistence needs, and exchange of surpluses. In the early part of the 20th century, the British colonial administration considered the possibilities of starting large-scale exports of shea kernels to Europe. Multiple colonial initiatives to develop the global trade were not successful due to a composite of factors. Contemporary patterns of production, trade and regulation are contrasted in the context of globalisation in the post-independence era. The government of Ghana has progressively reinforced its ambitions to expand the shea nut trade as part of the state's portfolio of major non-traditional agricultural export commodities. This policy is embedded within the (now) dominant orthodoxy of neo-liberalism, which privileges monetized production systems and private over public regulation. Historically and culturally-embedded patterns of shea production and trade by women in northern Ghana may now be challenged by the emergence of new processing technologies, the emergence of an oligopolistic global commodity chain and the anticipated continued growth in global demand for cocoa butter equivalents. Nevertheless, the cumulative impacts of increasing commercialisation and world market integration at the national and local level in Ghana, and other West African producer countries, are still unknown. There are risks, however, that this process may result in 368 Andrew Wardell and Niels Fold social differentiation, changes in household consumption patterns and loss of livelihoods, particularly for women. Acknowledgements:The authors would like to thank three anonymous referees for their valuable comments on an earlier draft. We would also like to thank the Danish Council for Development Research for financial assistance.