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(Article of periodic en Anglais - 2010)

Document title

Water repellency and pore clogging at early successional stages of microbiotic crusts on inland dunes, Brandenburg, NE Germany

Authors(s) and Affiliation(s)

FISCHER T. (1) ; VESTE M. (2) ; WIEHE W. (1) ; LANGE P. (2) ;
(1) Brandenburg Univ. of Technology, Fac. of Environmental Sciences and Process Engineering, Central Analytical Lab., Cottbus, ALLEMAGNE
(2) Brandenburg Univ. of Technology, Research Center Landscape Development and Mining Landscapes, Cottbus, ALLEMAGNE

Abstract

Utilization of the mineral substrate at early stages of microbiotic crusts was investigated using scanning electron microscopy (SEM), water repellency indices were measured using the ethanol/water microinfiltrometer method, and steady state water flow was determined on the dry crusts and after 300, 600, 1200 and 1800 s of wetting, thus allowing to follow pore clogging through swelling of extracellular polymeric substances (EPS). The sampling site is located near Lieberose, Brandenburg. It was concluded that a new phase of crust succession was accompanied by easier wettability but slower infiltration. Transition from hydrophobicity to pore clogging as ruling mechanisms causing water run-off may occur during wetting of individual biological crusts, but also during crust succession over time

Source

Article of periodic

published at : Catena / ISSN 0341-8162

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

Millesime : 2010, vol. 80, no1 [pp. 47-52]

Bibliographic references : 0,5 p.

Collation : 8 fig., 1 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2009.08.009

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2010
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