Calls for transformation, transformative research, and transformational impact are increasingly heard from governments, industry, and universities to recast a course towards sustainability. This paper retraces a social, qualitative, and interpretive research endeavor to contribute to broadening the conceptual base of transformation. Drawing on perspectives of practitioners involved in working with communities to bring about change in how land and water are managed, the objective of the research was to elicit a range of practice-based encounters of transformation to inform policy and theory. In identifying precursors and processes for change, the findings bring into view the often unseen internal and experiential dimensions of transformation. As such, the research provides insights on where transformation takes place, what the first step of transformation might look like, and what might be deemed transformational. The paper also builds on social practice theory to produce an explanatory model of transformational capacity that is enabled and constrained by structures, processes, understanding, and authority that impact on social practices of knowledge generation (including science) and land and water decision-making.

Knowledge brokers are often portrayed as neutral intermediaries that act as a necessary conduit between the spheres of science and policy. Conceived largely as a task in packaging, brokers are expected to link knowledge producers and users and objectively translate science into policy-useable knowledge. The research presented in this paper shows how brokering can be far more active and precarious. We present findings from semistructured interviews with practitioners working with community-based groups involved in collaborative water planning in New Zealand's South Island region of Canterbury. Working in a highly conflicted situation, our brokers had to navigate different knowledges and epistemic practices, highly divergent values and grapple with uncertainties to deliver recommendations for regional authorities to set water quality and quantity limits. Conceiving science and policy as interlinked, mutually constitutive and co-produced at multiple levels, rather than as separate domains, shows how the brokers of this study were not only bridging or blurring science policy boundaries to integrate and translate knowledges. They were also building boundaries between science and policy to foster credibility and legitimacy for themselves as scientists and the knowledge they were brokering. This research identifies further underexplored aspects of brokering expertise, namely, the multiple dimensions of brokering, transdisciplinary skills and expertise, 'absorptive' uncertainty management and knowledge translation practices.

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In this case study, we examine the role of science and scientists in community-led collaborative policy processes. We outline the shift from science-led linear policy processes to community-led science-informed policy processes. This case study illustrates how practice evolved to ensure that scientists provided reliable, credible, and salient evidence to help community decision-makers. From this experience, a set of principles for scientists working in these environments was created. These principles include scientists recognising their changing role, scientists sharing the burden of uncertainty, scientists speaking in the communities’ language, and scientists creating fit for purpose assessment frameworks.

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