Altitudinal and r
Altitudinal
and rocky habitats of the flora eastern and western sides of the Al Jabal Al
Akhdar in Libya
Abusaief, Huda. Mohamed Abd
Al Razik.1 Dakhil, Ansaf. Husien2, and Al-Mogasby
Abd Al Salam.3
1Agron. Fac. Agric., Omar Al-Mukhtar Univ. 2Bot.
Fac. Sci. Omar Al-Mukhtar Univ. 3Herbarium Fac. Sci. Benghazi
Univ. [email protected]
Abstract: The
study was conducted during 2010 and 2011 at two different areas Al-Mansora and
Jarjr-oma in Al Jabal Al Akhdar. The ecological surveys are necessary for an
adequate characterization of a plant community and change in different along altitudinal
gradient species in importance value, dominance and plant density. In Rocky
habitat increased number of species to 175 species in Al-Mansora when altitude
309.4 m asl and 153 species in Jarjr oma when altitude 1 m asl. However, altitude
in Rocky habitat of Al Mansora gave the highest number of
species than that of Jarjr oma percent 7 % although of increase altitude.
In Al Mansora habitat the importance value of the different association type 1
to 8, the values of species Thymus capitatus high
in all characteristics, following Cistus
parviflorus give highest presence during autumn season its species
unpalatable.Vegetation dendrogram of stands based on Dominance of the
species TWINSPAN classification four groups of Rocky habitat Al Mansora area,
dominant by Cistus parviflorus, Rhamnus lycioides, Thymus
capitatus andSarcopoterium spinosum.
In general, Rocky Coastal of Jarjr oma area gave highest the IV species Rhus tripartita,Sarcopoterium
spinosum, Arisarum vulgare and Suaeda vera, wherever,
dominance the indicator species Rhus
tripartita, Sarcopoterium spinosum, Juncus
acutus and Periploca angustifolia. The effect of
difference seasons on plant density of Rocky Coastal were annuals species such
as Mercurialis annua and Anagallis arvensis gave
the highest plant density 1.2 plant per m2 in autumn its
unpalatable species. However, species of Arisarum vulgarehad the
highest plant density than that of Mercurialis annua in
winter. Palatable species such as Hordeum marinum and Frankenia
hirsuta gave highest in spring, in summer season Sarcopoterium
spinosum, Rhus tripartita and Juncus acutus had
the highest plant density and its palatable species except Sarcopoterium
spinosum. Al Mansora Rocky habitat was soil texture in community Thymus
capitatus was silty lome while soil texture in community Sarcopoterium
spinosum and Cistus parviflorus was silty clay,
however, Rocky Coastal of Jarjr oma convergent community to clay
perecentage of Suaeda vera and Sarcopoterium spinosum both
44%, while Rhus tripartita 42%, silty clay loam in Sarcopoterium
spinosum. pH value a natural generally in all community. Electrical
conductivity community Suaeda vera have highest mean
value of 2.42 mmohs/cm.
[Abusaief, Huda. Mohamed Abd Al Razik, Dakhil,
Ansaf. Husien and Al-Mogasby Abd Al Salam. Altitudinal and rocky
habitats of the flora eastern and western sides of the Al Jabal Al Akhdar in
Libya. J Am Sci2013;9(6):101-127]. (ISSN: 1545-1003). http://www.jofamericanscience.org.
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Keyword: Altitudinal, Rocky habitat, Flora, Dominance, Density
and Important value Full Text 13
