Natural resources are structured by both formal and informal institutions. To what extent could both formal and informal rules combine to either promote or negatively affect natural resources? In the paper below, the author provides evidence to demonstrate that formal-informal institutional mix could a double-edged sword that stimulates or thwarts natural resource management efforts.
"Institutional assessment in natural resource governance: A conceptual overview"
http://www.sciencedirect.com/science/article/pii/S1389934116301654