Highlighting the value of natural areas is a key element of legitimation for the constraints their protection imposes on certain activities. Travel cost method is used to value the recreational ...
Griffithsia barbata (Smith) C. Agardh et G. tenuis C. Agardh sont décrits d'après du matériel provenant principalement de Port-Cros (France, Méditerranée); l'écologie, la phénologie et la chorologie ...
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