Biological soil crusts cause subcritical water repellency in a sand dune ecosystem located along a rainfall gradient in the NW Negev desert, Israel

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

Externe Organisationen

  • Justus-Liebig-Universität Gießen
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Seiten (von - bis)133-140
Seitenumfang8
FachzeitschriftJournal of Hydrology and Hydromechanics
Jahrgang64
Ausgabenummer2
PublikationsstatusVeröffentlicht - 1 Juni 2016
Extern publiziertJa

Abstract

The biological soil crusts (BSCs) in the NW Negev cause local water redistribution by increasing surface runoff. The effects of pore clogging and swelling of organic and inorganic crust components were intensively investigated in earlier studies. However, the effect of water repellency (WR) was not addressed systematically yet. This study investigates subcritical WR of BSCs in three different study sites in the NW Negev. For this purpose, three common methods to determine soil WR were used: (i) the repellency index (RI) method (ii) the water drop penetration time (WDPT) test and (iii) the Wilhelmy plate method (WPM). Furthermore, the potential influence of WR on local water redistribution is discussed and the applied methods are compared. We found the BSC to be subcritically water repellent. The degree of WR may only affect water redistribution on a microscale and has little influence on the ecosystem as a whole. The RI method was clearly the most appropriate to use, whereas the WDPT and the WPM failed to detect subcritical WR.

ASJC Scopus Sachgebiete

Zitieren

Biological soil crusts cause subcritical water repellency in a sand dune ecosystem located along a rainfall gradient in the NW Negev desert, Israel. / Keck, Hannes; Felde, Vincent John Martin Noah Linus; Drahorad, Sylvie Laureen et al.
in: Journal of Hydrology and Hydromechanics, Jahrgang 64, Nr. 2, 01.06.2016, S. 133-140.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Download
@article{2118aea695984a61b4a083ff6521c901,
title = "Biological soil crusts cause subcritical water repellency in a sand dune ecosystem located along a rainfall gradient in the NW Negev desert, Israel",
abstract = "The biological soil crusts (BSCs) in the NW Negev cause local water redistribution by increasing surface runoff. The effects of pore clogging and swelling of organic and inorganic crust components were intensively investigated in earlier studies. However, the effect of water repellency (WR) was not addressed systematically yet. This study investigates subcritical WR of BSCs in three different study sites in the NW Negev. For this purpose, three common methods to determine soil WR were used: (i) the repellency index (RI) method (ii) the water drop penetration time (WDPT) test and (iii) the Wilhelmy plate method (WPM). Furthermore, the potential influence of WR on local water redistribution is discussed and the applied methods are compared. We found the BSC to be subcritically water repellent. The degree of WR may only affect water redistribution on a microscale and has little influence on the ecosystem as a whole. The RI method was clearly the most appropriate to use, whereas the WDPT and the WPM failed to detect subcritical WR.",
keywords = "Hydrophobicity, Infiltration, Reduced wettability, Surface runoff, Water repellency index",
author = "Hannes Keck and Felde, {Vincent John Martin Noah Linus} and Drahorad, {Sylvie Laureen} and Peter Felix-Henningsen",
note = "Publisher Copyright: {\textcopyright} 2016 Hannes Keck et al., published by De Gruyter Open.",
year = "2016",
month = jun,
day = "1",
doi = "10.1515/johh-2016-0001",
language = "English",
volume = "64",
pages = "133--140",
journal = "Journal of Hydrology and Hydromechanics",
issn = "0042-790X",
publisher = "De Gruyter Open Ltd.",
number = "2",

}

Download

TY - JOUR

T1 - Biological soil crusts cause subcritical water repellency in a sand dune ecosystem located along a rainfall gradient in the NW Negev desert, Israel

AU - Keck, Hannes

AU - Felde, Vincent John Martin Noah Linus

AU - Drahorad, Sylvie Laureen

AU - Felix-Henningsen, Peter

N1 - Publisher Copyright: © 2016 Hannes Keck et al., published by De Gruyter Open.

PY - 2016/6/1

Y1 - 2016/6/1

N2 - The biological soil crusts (BSCs) in the NW Negev cause local water redistribution by increasing surface runoff. The effects of pore clogging and swelling of organic and inorganic crust components were intensively investigated in earlier studies. However, the effect of water repellency (WR) was not addressed systematically yet. This study investigates subcritical WR of BSCs in three different study sites in the NW Negev. For this purpose, three common methods to determine soil WR were used: (i) the repellency index (RI) method (ii) the water drop penetration time (WDPT) test and (iii) the Wilhelmy plate method (WPM). Furthermore, the potential influence of WR on local water redistribution is discussed and the applied methods are compared. We found the BSC to be subcritically water repellent. The degree of WR may only affect water redistribution on a microscale and has little influence on the ecosystem as a whole. The RI method was clearly the most appropriate to use, whereas the WDPT and the WPM failed to detect subcritical WR.

AB - The biological soil crusts (BSCs) in the NW Negev cause local water redistribution by increasing surface runoff. The effects of pore clogging and swelling of organic and inorganic crust components were intensively investigated in earlier studies. However, the effect of water repellency (WR) was not addressed systematically yet. This study investigates subcritical WR of BSCs in three different study sites in the NW Negev. For this purpose, three common methods to determine soil WR were used: (i) the repellency index (RI) method (ii) the water drop penetration time (WDPT) test and (iii) the Wilhelmy plate method (WPM). Furthermore, the potential influence of WR on local water redistribution is discussed and the applied methods are compared. We found the BSC to be subcritically water repellent. The degree of WR may only affect water redistribution on a microscale and has little influence on the ecosystem as a whole. The RI method was clearly the most appropriate to use, whereas the WDPT and the WPM failed to detect subcritical WR.

KW - Hydrophobicity

KW - Infiltration

KW - Reduced wettability

KW - Surface runoff

KW - Water repellency index

UR - http://www.scopus.com/inward/record.url?scp=84970974459&partnerID=8YFLogxK

U2 - 10.1515/johh-2016-0001

DO - 10.1515/johh-2016-0001

M3 - Article

AN - SCOPUS:84970974459

VL - 64

SP - 133

EP - 140

JO - Journal of Hydrology and Hydromechanics

JF - Journal of Hydrology and Hydromechanics

SN - 0042-790X

IS - 2

ER -

Von denselben Autoren