IGB

Connexion

(Article of periodic en Anglais - 2011)

Document title

The effects of wildfires on the magnetic properties of soils in the Everglades

Authors(s) and Affiliation(s)

CLEMENT B.M. (1) ; JAVIER J. (2) ; SAH J.P. (3) ; ROSS M.S. (2 3) ;
(1) Integrated Ocean Drilling Program and Dep. of Geology and Geophysics, Texas A&M Univ., College Station, ETATS-UNIS
(2) Dep. of Earth & Environment, Florida International Univ., Miami, ETATS-UNIS
(3) Southeast Environmental Research Center, Florida International Univ., Miami, ETATS-UNIS

Abstract

The AA. present results of a rock-magnetic study of soils that were affected by wildfires that burned portions of the Everglades in the Spring of 2008. Soils at sites that were extensively burned exhibit a pronounced surface magnetic enhancement effect. The increase in magnetization results from an increased abundance of a low-coercivity phase (maghemite) that occurs at the expense of the abundance of a high-coercivity phase (goethite). These results indicate that fire-induced heating caused goethite in the surface soils to convert into a more magnetic, low-coercivity phase, such as maghemite. Goethite is an excellent adsorber of phosphorus, and therefore the AA. hypothesize that the destruction of goethite as a result of burning may have important implications for phosphorus cycling in the Everglades ecosystem

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, no4 [pp. 460-466]

Bibliographic references : 1 p.

Collation : 5 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2060

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
Refdoc record number (ud4) : 24422322 : Permanent link - XML version
Powered by Pxxo