Les aides publiques dommageables à la biodiversité (Public Subsidies Harmful to Biodiversity)

The report provides an extremely detailed review of policies within France that have the effect of harming biodiversity, though does not rank these subsidies in terms of which are most damaging.  The report looks at a vast array of policies that encourage urban sprawl, over-exploitation of resources, and the introduction of exotic species, in the process triggering habitat loss.  The analysis also looks at subsidies to pollution.  Although the authors were able to quantify many specific subsidy items, they were not able to present an aggregate tally due to the complexity of some of the programs.  They do conclude, however, that subsidies are extremely high.

Update, June 2015:  An English translation of this report has recently been released, and can be accessed here.