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(Article of periodic en Anglais - 2013)

Document title

Sarcopoterium spinosum from mosaic structure to matrix structure : Impact of calcrete (Nari) on vegetation in a Mediterranean semi-arid landscape

Authors(s) and Affiliation(s)

ACKERMANN O. (1) ; ZHEVELEV H.M. (2) ; SVORAY T. (3) ;
(1) The Inst. of Archaeology, Martin (Szusz) Dept. of land of Israel Studies and Archaeology, Bar Ilan Univ., Ramat Gan, ISRAEL
(2) Lab. of Geomorphology and Soil, Dept. of Geography and Environment, Bar-Ilan Univ., Ramat Gan, ISRAEL
(3) Dep. of Geography and Environmental Development, Ben Gurion Univ. of the Negev, Beer Sheva, ISRAEL

Abstract

Sarcopoterium spinosum L. (S.p.) is a common type of dwarf shrub in the eastern Mediterranean area. This study focuses on the semi-arid south-western Judean foothills (Shephelah) in Israel, characterized by a hilly landscape with variable coverage of hard calcrete rock outcrops (Nari) on chalk. A field study was conducted to measure visual surface coverage of 5 components : S.p., shrub (excluding S.p. and including other dwarf shrubs and trees), annuals, rock, and bare soil. The results show that rock, an abiotic component, plays an important role in this semi-arid landscape. Among the studied components, the relationship between rock and S.p. was found to be the strongest. As rock presence decreases, S.p. distribution increases. The threshold for S.p. dominance is rock coverage below 14%. The results show that the rock/S.p. ratio controls changes in the landscape structure varying from stable heterogenic mosaic to stable homogeneous S.p. matrix

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2013, vol. 101 [pp. 79-91]

Bibliographic references : 1 p.

Collation : 13 fig., 4 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2012.10.001

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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