|  | 
	
		| Papa A. Diop | 
	
		| Université de Rouen - CREAM EA 4702  and Université le Havre - EDEHN EA 7263 | 
	
		|  | 
	
		| 3, Avenue Pasteur | 
	
		|  | 
	
		|  | 
	
		| Rouen,  76000 | 
	
		| France | 
	
		|  | 
	
		| papaabdoulaye.diop@univ-rouen.fr | 
	
		|  | 
	
		|  | 
	
		|  | 
	
		|  | 
	
		|  | 
	
		|  | 
	
		|  | 
	
		| JEL Areas: Q2 : Renewable Resources and Conservation: General
 Q5 : Environmental Economics: General
 |