Vol. 32 – 2006 - Ecologia Mediterranea
Vol. 32 – 2006 - Ecologia Mediterranea
Vol. 32 – 2006 - Ecologia Mediterranea
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MOHAMED TARHOUNI, AZAIEZ OULED BELGACEM, BELGACEM HENCHI, MOHAMED NEFFATI<br />
44<br />
Figure 4 <strong>–</strong> Percent cover of plants depending on the season drought and the distance from watering points<br />
combined at well 2. See Table 1 for ANOVA results. Values are means ± IC. a/b/c indicate<br />
differences for Hemicryptophyte plants and 1/2 for CRS plants.<br />
Figure 5 <strong>–</strong> Percent cover of plants depending on the season drought and<br />
the distance from watering points combined at well 3. See Table 1 for ANOVA results.<br />
Values are means ± IC. a/b indicate differences for Therophyte plants.<br />
Plant cover (%)<br />
35<br />
30<br />
25<br />
20<br />
15<br />
10<br />
5<br />
0<br />
Th Th Th Th Th Th Th Th<br />
250 m 500 m 1 km 2 km 250 m 500 m 1 km 2 km<br />
Fall String<br />
spring far from well 2 while it was the lowest<br />
close to well 2 in both the rainy and the dry<br />
season (Table 1; Figure 4). RS covers are not<br />
significantly influenced by distance from<br />
watering points. S cover increases significantly<br />
with increasing distance from watering<br />
point at well 1, while it increases and then<br />
becomes relatively stable at well 2.<br />
a<br />
Discussion<br />
ab<br />
The main results of this study show that<br />
Therophyte, arido-passive, RS and CRS<br />
plants are particularly adapted to drought as<br />
they increase greatly in the rainy season<br />
(spending the dry season as seeds, etc.).<br />
Chamaephyte, arido-active, S and CS plants<br />
are particularly sensitive to disturbance and<br />
thus not adapted to high trampling and grazing.<br />
Hemicryptophyte and CRS plants are<br />
also sensitive to disturbance but to a lesser<br />
extent than previous species.<br />
b<br />
ecologia mediterranea <strong>–</strong> <strong>Vol</strong>. <strong>32</strong> <strong>–</strong> <strong>2006</strong><br />
b