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Vegetation dynamics under variable conditions in the famous sandy steppe of southern Tunisia

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Title Vegetation dynamics under variable conditions in the famous sandy steppe of southern Tunisia
 
Creator Attia, Wassim
 
Contributor Tarhouni, Mohamed
Ouled Belgacem, Azaiez
Gammar, Omar
Khatteli, Houcine
 
Subject sandy stepps
 
Description During last decades, the natural vegetation cover in
southern Tunisia, mainly dominated by dwarf and sparse
shrub, was continuously disturbed under various human
activities especially on sandy soil (easily eroded). The
ecological characteristics (soil structure and texture, vegetation,
topography…) of sandy steppes, with Rhanterium
suaveolens Desf., enhanced their sharp decline. This study
aims to investigate the vegetation status of two R. suaveolens
steppes (R: protected; r: degraded) under different
conditions in five sites belonging to southern Tunisia using
the quadrat point method and some ecological indicators.
Main results show that vegetation cover is related to
climatic conditions. Plant density is mainly affected by
rainfall and human activities. The annual and perennial
density and cover are high during the rainy season (spring)
compared with the dry one (fall). The degraded steppes (r)
are mainly dominated by annual plants but the protected
steppes (R) contain more perennials. This work can be very
useful for the sustainable sandy steppes management under
different stress and human disturbances in dry area. It
presents a great national and international importance
(economic, social, nature conservation…) such as job
creation and limiting rural exodus.
 
Date 2013-11-30
2017-01-05T19:42:26Z
2017-01-05T19:42:26Z
 
Type Journal Article
 
Identifier https://mel.cgiar.org/reporting/download/hash/1fX18cYt
Wassim Attia, Mohamed Tarhouni, Azaiez Ouled Belgacem, Omar Gammar, Houcine Khatteli. (30/11/2013). Vegetation dynamics under variable conditions in the famous sandy steppe of southern Tunisia. African Journal of Ecology, 53, pp. 16-24.
https://hdl.handle.net/20.500.11766/5278
Limited access
 
Language en
 
Rights CC-BY-NC-4.0
 
Format PDF
 
Publisher Wiley
 
Source African Journal of Ecology ;53,(2013) Pagination 16,24