In order to develop BiodiversityKnowledge, a Network of Knowledge working
at the European science–policy interface for biodiversity and ecosystem services, we
conducted three trial assessments. Their purpose was to test structure and processes of the
knowledge synthesis function and to produce knowledge syntheses. The trial assessments
covered conservation and management of kelp ecosystems, biological control of agricultural
pests, and conservation and multifunctional management of floodplains. Following
the BiodiversityKnowledge processes, we set up expert consultations, systematic reviews,
and collaborative adaptive management procedures in collaboration with requesters, policy
and decision-makers, stakeholders, and knowledge holders. Outputs included expert consultations,
systematic review protocols, a group model and a policy brief. Important lessons
learned were firstly that the scoping process, in which requesters and experts iteratively negotiate the scope, scale and synthesis methodology, is of paramount importance to
maximize the scientific credibility and policy relevance of the output. Secondly, selection
of a broad array of experts with diverse and complementary skills (including multidisciplinary
background and a broad geographical coverage) and participation of all relevant
stakeholders is crucial to ensure an adequate breath of expertise, better methodological
choices, and maximal uptake of outcomes: Thirdly, as the most important challenge was
expert and stakeholder engagement, a high visibility and reputation of BiodiversityKnowledge,
supported by an incentive system for participation, will be crucial to ensure
such engagement. We conclude that BiodiversityKnowledge has potential for a good
performance in delivering assessments, but it requires adequate funding, trust-building
among knowledge holders and stakeholders, and a proactive and robust interface with the
policy and decision making communityPeer reviewe