Table 2. Characteristics of the floristic diversity in the four villages studied in Mexico.

Village
No. fields/
no. plots
Field area (ha)
Morpho-species
Total no. species
No. spp./ha
Mean no.
spp./field
S. Lorenzo
18/120
0.35
149
86
46.3
74.8 (21.8)
T. Colorada
27/108
n.a.
234
92
66.5
55.0 (20.6)
S. Miguel
46/184
0.92
115
85
40.9
61.9 (17.8)
S. Fernando
20/158
1.10
216
174
48.2
128.4 (34.7)


Notes: No. fields/no. plots is a measure of the sampling effort in each village. Field area is the average size of a field in hectares. Morpho-species and total species are estimates of the cumulative richness, following either folk or scientific taxonomy. No. spp./ha represents the average number of species encountered in one hectare and was calculated by dividing the species number in a given field by the surface of that field. Mean no. spp./field represents the average number of species encountered in one field (and 1 SD).