The assessment of the economic and monetary value of the components of biodiversity is complex is still in its infancy. Attempts and evaluations of the direct and indirect economic value of ecosystems and some sites have nonetheless begun For example, the table below summarizes the direct and indirect value of biodiversity in Tunisia: (Million DT currents)
|Use values||Non-use values||totals|
|Direct use values||Indirect use values||Option and existence values||Economic value||Monetary return|
|Component||With extraction||Without extraction||Without extraction||Negative externalities|
|Fisheries and aquaculture||337||nd||nd||nd||-||337||337|
|Recreation and hunting and gathering||3,64||-||-||-||3,64||4,677|
The Know-how related to traditional biodiversity and its conservation has been relatively little attention Only fragmentary information or scattered were identified and are reminiscent of the traditional uses of certain products for food and medicinal purposes.
Traditional know-how has been mainly addressed to agrodiversity. Despite the lack of precise knowledge on this knowledge, the existence of local heirloom or local animal breeds is all demonstrations of the existence of traditional craftsmanship.