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(Article of periodic en Anglais - 1998)

Document title

The role of biota in the initiation and growth of islands on the floodplain of the Okavango alluvial fan, Botswana

Authors(s) and Affiliation(s)

MCCARTHY T.S. ; ELLERY W.N. ; DANGERFIELD J.M. ;

Abstract

A group of islands of varying size on the floodplain of the Okavango alluvial fan, were studied to establish the processes which lead to the initiation and growth of islands. It was found that islands are initiated by the mound-building activities of the termite Macrotermes michaelseni. Shrubs and trees are able to colonize these mounds, which results in increased transpiration. As a result, precipitation of calcite and silica from the shallow ground water occurs preferentially beneath the mounds, resulting in vertical and especially lateral growth, causing island expansion

Source

Article of periodic

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

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

Millesime : 1998, vol. 23, no4 [pp. 291-316]

Bibliographic references : 36 ref.

Collation : Illustration ;

Language

Anglais

Localisation

Bureau de recherches géologiques et minières - Orléans

INIST-CNRS, Cote INIST : 17355

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 1998.
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