Here’s a Ted talk from 2010 about paying people NOT to kill wildlife. I sympathize (somewhat) with the goal of conservation, but environmentalists know nothing about economic incentive.
Greg Stone talks about ANTI-fishing licenses:
Well, their is now evidence of what you might determine rationally. Paying people not to do something is a recipe for disaster:
A renegade band of Solomon Islanders is responsible for the slaughter this week of about 900 bottlenose dolphins, says a group that was paying for the killing to stop.
Fanalei villagers on Malaita said the American Earth Island Institute had promised last April to pay them S$2.4 million (NZ$400,000) over two years not to kill dolphins, but villagers claim they had only received 700,000.
The Solomon Star said the killing was in retaliation for the underpayment. 
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