Policy integration for adaptive water governance: Learning from Scotland's experience.

Highlights: [•] We strengthen theories on adaptive governance with policy integration theory. [•] Polycentric policy regimes can support adaptive IWRM. [•] Participatory processes help overcome limitations of polycentric governance. [•] Informal participatory processes may not be sufficient to ensure collaboration. [•] Statutory procedures may create inter-dependence and secure commitment for change. [ABSTRACT FROM AUTHOR]