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(Article of periodic en Anglais - 2011)

Document title

Bioturbation on a south-east Australian hillslope : estimating contributions to soil flux

Authors(s) and Affiliation(s)

RICHARDS P.J. (1) ; HOHENTHAL J.M. (2) ; HUMPHREYS G.S. (1) ;
(1) Dep. of Environment and Geography, Macquarie Univ., Sydney, AUSTRALIE
(2) Dep. of Geography, Univ., Turku, FINLANDE

Abstract

This study explored the direct flux of soil caused by Aphaenogaster ant mounding, vertebrate scraping and tree-throw on a wildfire-affected hillslope in south-east Australia. This included the development and an evaluation of methods for estimating the volume of soil displaced by tree-throw events. All 3 bioturbation types resulted in a net downslope flux, but any influence of hillslope angle on flux rates appeared to be overshadowed by environmental controls over the spatial extent of bioturbation. As a result, the highest flux rates occurred on the footslope and lower slope. Although direct biotic soil flux appears to be geomorphologically significant on this hillslope, such transport processes are probably subordinate to other impacts of bioturbation at this site such as the enhancement of infiltration following wildfire

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2011, vol. 36, no9 [pp. 1240-1253]

Bibliographic references : 1,5 p.

Collation : 11 fig., 6 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2149

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