Appendix 4. Description of partial canonical analysis variables used in the database of 105 edible plant species. M: Matrices: 1 = Managements variables (Matrix Y), 2=Ecological Variables (Matrix X), 3=Socioeconomic variables (Matrix W).
M
Variable
Description
1
Ecological Status
Conditions of habitat of a plant species, wild=1, weed or ruderal =2, domesticated=3. To obtained a number each category was considered, e.i. a species plant weed (2) and wild(1), its value was: 2+1=3
Characteristics of the management, is a gradient of complexity, if it´s recollected (1), tolerated (2), promoted (3), protected (4) or cultivated (5). Each species plant was considered as a number. When a species plant had 2 o more categories those were summed, such as, tolerated (2) and promoted (3), the result was 2+3=5.
1
Categories of management types
Numbers of categories were summed, by example when a plant had two categories those were summed, such as recollected plus protected, two categories, were 2.
1
Management systems
Spatial system where a plant is present, since natural vegetation (1), secondary vegetation (2), agroforestal system (3), homegardens (4), intensive system (5). When a species plant had more than one categories those were summed, i.e. : natural vegetation (1), homegardens (4)= 1+4 =5.
1
Categories of management system
Number of categories were summed, by example when a plant had two categories, those were summed, such as present in homegarden plus agroforestal system, in total we have 2 categories
1
Origin
We considered as native plants those with natural populations in the arid and semiarid region of the Valley and in the “Sierra Negra” of Puebla. Plants species that come from other Mexican regions and other parts of the world were considered as introduced. Native was 2, introduced=1
1
Uses
Number of uses considered on database of Blancas et al 2010 and bibliographic information.When we obtained more than one value those were summed.
2
Percentage presence in plots
Number of plots where a species was present obtained through revision of its presence in 98 samples. Each cell value was divided between 98 and after we calculated its percentage.
6 types of vegetation of Valiente-Banuet 2000 were considered, plus agricultural. For each species plant was registered in how many types of vegetation are possible to find it and this number was divided between seven. After that, its percentage respect to total was calculated.