Table 1 Criteria used to define the values of vulnerability of Agave species according to socio-cultural, economic, ecological, and biological indicators

Useful part

Use of dead plant parts

0

Use of vegetative parts (leaves, fiber, spines)

1

Use of sap and reproductive parts (flower buds, inflorescences

2

Use of the entire plant

3

Management

Cultivated, domesticated, and introduced species (no wild populations occurring in the region)

0

Wild native species cultivated ex-situ by seeds

1

Wild native species cultivated ex situ through vegetative propagules

2

Wild native species tolerated and protected in situ in modified originally natural areas

3

Wild native species under simple gathering of vegetative parts (leaves) and vegetative sprouts.

4

Wild native species under simple gathering of reproductive parts (flowers and inflorescences) and entire individual plants before sexual reproduction

5

Demand in markets

Not interchanged in markets

0

Commercialized or bartered in markets

1

Ecological status

Cultivated introduced species

1

Wild and cultivated species

2

Only wild populations

3

Propagation

Seeds, caespitose and rhizomatous suckers and/or bulbils

1

Seeds and multiannual rhizomatous suckers

2

Seeds and low production of early rhizomatous suckers

3

Seeds and axilar suckers

4

Exclusively seeds

5

Distribution in regional vegetation types

Occurring in five or more vegetation types

1

Occurring in four regional vegetation types

2

Occurring in three regional vegetation types

3

Occurring in two regional vegetation types

4

Occurring in one single regional vegetation type

5

Distribution in other regions of Mexico

Cultivated broadly distributed species

0

Occurring in more than six states of Mexico

1

Occurring in two to five states of Mexico

2

Endemic to the region

3