Comprend notamment Ulex europeus (-3.08) une chamephyte, Asparagus albus (-2.56) une hemicryptophyte, Scorpiurus muricatus (-2.77) une
therophyte. Le cote positif de l'axe regroupe les taxons des especes du matorral a caractere biologique diversifie, oo se melent Calycotome villosa (2.00), chamephyte Arisarum vulgare (1.83) geophyte, et deux
therophytes Anagallis arvensis (1.83) et Galium verum (1.81).
As a general pattern, it has been noted, within the first 10-20 years of grazing abandonment, the physiognomy of the fields is characterized by a phase of lower cover of
therophyte plants and little recovery of the perennial grass layer.
Therophyte and chamaephyte are the most dominant life forms in Tabuk region.
x Vitaceae Cissus bahiensis Lombardi x Vochysiaceae Vochysia thyrsoidea Phol Undetermined Undetermined 1 Undetermined 2 Undetermined 3 Undetermined 4 Undetermined 5 Undetermined 6 x Undetermined 7 x Undetermined 8 x Undetermined 9 x Undetermined 10 x 117 LF = Life form; Ch: chamaephyte; H: hemicryptophyte; Ph: phanerophyte; Th:
therophyte; Cr: cryptophyte; Su: "suculenta"; Ep: epiphyte; OPI: open cerrado (site I); OPII (site II): open cerrado II; ROC: rocky outcrop cerrado; TC: typical cerrado; CCT: cerrado-caatinga transition; CAA: caatinga.
Cha = chamaephyte; The =
therophyte; Hem = hemicryptophyte; Pha = phanerophyte; Cry = cryptophyte.
Therophyte was the most abundant life form consisted of 16 grass species (59.2%) followed by hemicryptophytes 09 species (33.3%) and phanerophytes 02 species (7.4%).
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.
During the long dry season, most species lose leaves (woody species) or die (
therophyte herbaceous) (Araujo et al., 2007; Sampaio, 1995).
(2005) Ph phanerophyte, Ch chamaephyte, He hemicryptophyte, Cr cryptophyte, Th
therophyte Fig.
In relation to the latter, it has been found mainly on river bar
therophyte communities of the Bidenti frondosae-Polygonetum lapathifolii provisional association (Campos, 2010), which are dominated by other Persicaria species, especially P.
Growth form (erect, semi-erect, or prostrate) and life form (trees, phanerophyte, chamaephyte, annual shrubs, perennial forbs, perennial grasses, biennial forbs,
therophyte, or climbers) were assigned following Ali and Jari [1] and Sankary[26].
Ch: Chamephyte; Cr: Criptophyte; H: Hemicriptophyte; Hy: Hydrophyte; Ph: Phanerophyte; Th:
Therophyte; Agr: Agriophyte; Arch: Archeophyte; Dia: Diaphyte; Epoe: Epoecophyte; Medit.