Table 1 Variables considered in the study and studies investigating these variables

Gender

Male/Female

-

[3,36,37,41]

Age

Age classes: 1 (7–13 yr); 2 (14–20 yr); 3 (21–30 yr); 4 (31–40 yr); 5 (>40 yr).

-

[17,24,41]

Age × Gender

Interaction factor

[7,11]

Refugee

Yes/No

Did the informant live in the local mountains as a refugee?

Not previously examined

Visit mountains

Yes/No

Does the informant visit the mountains in daily life?

In relation to occupation [17,41]

Work in the field

Yes/No

Does the informant plant, weed or harvest field crops?

In relation to occupation [17,41]

Place of residence

Arena Blanca/Pamuy

Where does the informant live?

[17,40]

Residence time

< or > than the average

How long has the informant lived in the area?

[41]

Main source of Knowledge

Grandparents; Parents; Other (school, self-taught)

From whom did the informant obtain knowledge of WEPs?

[19,23,24]

Distribution of the plant

Arena Blanca; Pamuy; Mountain; Milpa; Homegarden; Riverbank

Is the plant found nearby populated areas (Arena Blanca and/or Pamuy), in farmlands (milpa) or in other ecosystems (mountains, riverbank)?

[17,39,40]