Spanning boundaries: Science–policy interaction in developing countries—The Zambian REDD+ process case

• Zambian science–policy interaction in REDD+ is not one-way transfer of knowledge.
• Research based evidence related to REDD+ plays a minor role in policy making.
• Recognition of boundary work is important in knowledge transactions.
• Unclear boundaries create problems for knowledge brokers.
• Rethinking the link between science and policy may strengthen their interaction.

The paper investigates science–policy interaction in forestry in developing countries. It uses the case of REDD+ in Zambia, and links theoretical considerations with practical strategies. Science–policy interaction in the case of REDD+ is analyzed through two theoretical frameworks: the Knowledge Transfer Model and the Transaction Model. Based on interviews and document analysis, the paper advances on how it is possible to improve evidence-based policy-making for the benefit of the environment in developing countries. It is found that re-thinking of science–policy interaction gives rise to new opportunities to strengthen the links between science and policy, and consideration is given to the question of what key strategies would best secure this linkage.