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(Article of periodic en Anglais - 2012)

Document title

The effects of heavy winter rains and rare summer rains on biological soil crusts in the Negev Desert

Authors(s) and Affiliation(s)

KIDRON G.J. (1) ; BARINOVA S. (2) ; VONSHAK A. (3) ;
(1) Inst. of Earth Sciences, Hebrew Univ., Jerusalem, ISRAEL
(2) Inst. of Evolution, Univ., Haifa, ISRAEL
(3) Dep. of Dryland Biotechnologies. The Jacob Blaustein Inst. for Desert Research, Ben Gurion Univ. of the Negev, Sede Boqer, ISRAEL

Abstract

Biological soil crusts (BSCs) abound in the Hallamish dune field in the western Negev Desert, Israel. The aim of this paper is to examine crust responses to winter and summer rains, focusing particularly on its biomass components, chlorophyll and carbohydrate. In addition, species composition, during summer and winter was examined. Analysis took place during an exceptionally wet winter (1994/95 with 172 mm) and a summer rainstorm (12.5.93 with 9.7 mm). It is shown that : chlorophyll and carbohydrates of the BSCs increase 2–3-fold following winter rains; much higher species composition was monitored at the BSC during the winter; summer rain substantially deceased the chlorophyll content of the crusts; summer rains may alter species composition and biomass of BSCs

Source

Article of periodic

published at : Catena / ISSN 0341-8162

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

Millesime : 2012, vol. 95 [pp. 6-11]

Bibliographic references : 47 ref.

Collation : 6 fig., 2 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2012.02.021

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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