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

Title data

Suchodoletz, Hans von ; Glaser, Bruno ; Thrippleton, Timothy ; Broder, Tanja ; Zang, Ulrich ; Eigenmann, Rafael ; Kopp, Benjamin ; Reichert, Martin ; Zöller, Ludwig:
The influence of Saharan dust deposits on La Palma soil properties (Canary Islands, Spain).
In: Catena. Vol. 103 (April 2013) . - pp. 44-52.
ISSN 0341-8162
DOI: https://doi.org/10.1016/j.catena.2011.07.005

Abstract in another language

The significance of Saharandustdeposits for ecosystems has been demonstrated in several studies, showing its influence on pedogenesis and soil chemical and physical parameters by the addition of nutrient elements. This contribution is especially important for volcanic soils poor in plant-available phosphorous as those of the island of LaPalma (Canary Islands, Spain). Thus, this study investigates the spatial distribution of Saharandust on the island, 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 Saharandust. Quartz was identified and quantified using X-ray diffractometry. The influence of Saharandust 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. A positive correlation of quartz content with the proportion of the grain size fraction 0.5–10 μm demonstrates an influence on soil physical properties, apparently influencing available water capacity. Furthermore, our data suggest an increasing content of plant-available phosphorous with a rising amount of Saharandust in the soils. Thus, the input of Saharandust influences soil fertility of LaPalma and is an important factor regarding the fragility of the LaPalma ecosystems.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER107546
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Junior Professorship Biogeographical Modelling
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 03 May 2015 08:56
Last Modified: 03 May 2015 08:56
URI: https://eref.uni-bayreuth.de/id/eprint/12627