(Article of periodic en Anglais - 2010)

Document title

Fine gravel controls hydrologic and erodibility responses to trampling disturbance for coarse-textured soils with weak cyanobacterial crusts

Authors(s) and Affiliation(s)

HERRICK J.E. (1) ; VAN ZEE J.W. (1) ; BELNAP J. (2) ; JOHANSEN J.R. (3) ; REMMENGA M. (4) ;
(1) USDA-ARS Jornada Experimental Range, Las Cruces, ETATS-UNIS
(2) USGS Southwest Biological Science Center, Moab, ETATS-UNIS
(3) Dep. of Biology, John Carroll Univ., Heights, ETATS-UNIS
(4) National Surveillance Unit Centers for Epidemiology and Animal Health, USDA/APHIS/VS, Fort Collins, ETATS-UNIS


The AA. compared short-term effects of lug-soled boot trampling disturbance on water infiltration and soil erodibility on coarse-textured soils covered by a mixture of fine gravel and coarse sand over weak cyanobacterially-dominated biological soil crusts. Trampling significantly reduced final infiltration rate and total infiltration and increased sediment generation from small rainfall simulation plots. Trampling had no effect on time to runoff or time to peak runoff. Trampling had similar effects at sites with both low and very low levels of cyanobacterial biomass, as indicated by chlorophyll a concentrations. The results of this study underscore the importance of carefully characterizing both soil physical and biological properties to understand how disturbance affects ecosystem processes


Article of periodic

published at : Catena / ISSN 0341-8162

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

Millesime : 2010, vol. 83, no2-3 [pp. 119-126]

Bibliographic references : 40 ref.

Collation : 4 fig., 5 tabl.



INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2010.08.007

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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