From: Traditional knowledge of wild edible plants used in the northwest of the Iberian Peninsula (Spain and Portugal): a comparative study
Survey sites
Informants
Localities
Surface (Km2)
Population
Campoo
107
42
1012
23000
Caurel
39
19
100
1200
Picos de Europa
131
67
1920
19900
Piloña
94
51
283
8600
Montesinho
90
30
734
7427
Sanabria
44
20
2120
15000