We’ve just had a published in Journal of Applied Ecology that examines potential perverse incentives resulting from biodiversity offsetting. We outline some of the ways in which even best-practice offsetting could end up being bad for biodiversity, and discuss how to reduce the risks of perverse outcomes.
The paper is available here: http://onlinelibrary.wiley.com/doi/10.1111/1365-2664.12398/abstract