Phanerophytes were the most abundant species and individuals ones, with 2 364 individuals, followed by hemicryptophytes (1 443 individuals), therophytes (265 individuals), geophytes (213 individuals) and chamaephytes
of Percentage Leaf size species classes Therophytes 31 39.74 Microphyll Megaphanerophytes 17 21.79 Mesophyll Nanophanerophytes 11 14.10 Nanophyll Cryptophytes 12 15.38 Macrophyll Hemicryptophytes 05 6.41 Leptophyll Chamaephytes
02 2.56 Megaphyll Aphyllous Life-form classes No.
The association is mostly composed of hemicryptophyte and chamaephytes
. Distribution: It spreads north and northeast of Golludag between 1700 and 2100 m.
As illustrated in Figure 1, the floral community in Tabuk region was dominated by therophytes and chamaephytes
. However, the phanerophytes constituted the lowest contribution.
Chi-Square tests indicated significant differences in the percentages of chamaephytes
, therophytes and phanerophytes species between the caatinga and the cerrado, and between the caatinga and the cerrado-caatinga transition areas.
A high proportion of phanerophytes and chamaephytes
, close to 30 and 15%, respectively, were also registered.
Hemicryptophytes life form, of temperate regions, Therophytes index arid areas and mountainous areas is Chamaephytes
In the investigated area cold conditions, low temperature, wind and biotic factors result in un-favorable conditions paving way for chamaephytes
. Saxina et al.
Life form analysis of these two sites indicated the presence of therophytes (Th), chamaephytes
(Ch), hemicryptophytes (H), geophytes (G) and phenerophytes (Ph).
The most frequent biological types in deserts and subdeserts (therophytes, many geophytes, hemicryptophytes, and some chamaephytes
) are species with passive strategies; only chamaephytes
and phanerophytes have to adopt active strategies to deal with the arid climate.
The life form spectra showed that therophyte was dominant group with 24 (66.67%) species followed by hemicryptophytes having 8 (22.22%) species, chamaephytes
3 (8.33%) species and geophytes with one (2.78%) species only (Fig.