TITLE:
Inventory and Analysis of Phytodiversity along an Altitudinal Gradient in the Southern Slope of the Mount of Tessala (Western Algeria)
AUTHORS:
Houria Ouici, Zoheir Mehdadi, Kouider Cherifi
KEYWORDS:
Mount of Tessala, Phytodiversity, Floristic Inventory, AFC, CHA
JOURNAL NAME:
Open Journal of Ecology,
Vol.5 No.11,
November
25,
2015
ABSTRACT: Our work
consists in inventorying and analyzing the phytodiversity along an altitudinal
gradient of the southern slope of the mount of Tessala (north-western Algeria).
For this purpose, we choose seven stations, inside each one of them floristic
statements are realized. The inventory carries out on the whole of the stations
made it possible to draw up a floristic list represented by 103 species,
distributed on 39 botanical families dominated by Asteraceae, Poaceae, Lamiaceae and Brasicasseae. The biological spectrum of these species reveals
the predominance of the hemicryptophytes and the therophytes, and on the
physiognomical level, the vegetation of our stations allows distinguishing from
the tree, shrubby, bushy and herbaceous formations. The processing data
obtained by the factorial analysis of correspondences (AFC) and by ascending
hierarchical classification (CHA) emphasize the existence of two groups of
stations. A first group of stations are located in altitude, less degraded,
more diversified and where in particular the phanerophyts dominate. A second
group of stations are located in low altitude, little diversified and where the
degradation of vegetable cover is important, resulting in the installation of the
hemicryptophyts and the therophyts.