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(Article of periodic en Anglais - 2013)

Document title

The influence of Saharan dust deposits on La Palma soil properties (Canary Islands, Spain)

published at : Long-term degradation of fragile landscape systems

Authors(s) and Affiliation(s)

VON SUCHODOLETZ H. (1) ; GLASER B. (2) ; THRIPPLETON T. (3) ; BRODER T. (3) ; ZANG U. (3) ; EIGENMANN R. (3) ; KOPP B. (3) ; REICHERT M. (3) ; LUDWIG Z. (3) ;
(1) Institute of Geography, Univ., Leipzig, ALLEMAGNE
(2) Martin-Luther-Univ. Halle-Wittenberg, Soil Biogeochemistry, Halle, ALLEMAGNE
(3) Dep. of Geosciences, Univ., Bayreuth, ALLEMAGNE

Abstract

This study investigates the spatial distribution of Saharan dust on the island of La Palma, and determines its influence on soil properties and thus on the ecosystem of the island. Since silt-sized quartz is not autochthonously formed on the island, it served as a reliable indicator for Saharan dust. Quartz was identified and quantified using X-ray diffractometry. The influence of Saharan dust additions on soil properties was assessed by texture analyses and analyses of plant-available phosphorous, an element strongly limiting plant-growth on the island due to its fixation in the structure of amorphous volcanic clay. A luff–lee-effect revealed significant influence on dust distribution, whereas small geomorphologic structures as hollows and mounds hardly influenced the dust distribution pattern. Thus, the input of Saharan dust influences soil fertility of La Palma and is an important factor regarding the fragility of the La Palma ecosystems

Source

Thematical fascicle

published at : Catena / ISSN 0341-8162

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

Millesime : 2013, vol. 103 [pp. 44-52]

Bibliographic references : 1 p.

Collation : fig., tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2011.07.005

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