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(Article of periodic en Anglais - 2013)

Document title

A 700-year record on the effects of climate and human impact on the southern Cape coast inferred from lake sediments of Eilandvlei, Wilderness Embayment, South Africa

published at : Southern African geomorphology : looking back, moving forward

Authors(s) and Affiliation(s)

REINWARTH B. (1) ; FRANZ S. (1) ; BAADE J. (1) ; HABERZETTL T. (1) ; KASPER T. (1) ; DAUT G. (1) ; HELMSCHROT J. (2) ; KIRSTEN K.L. (3) ; QUICK L.J. (3) ; MEADOWS M.E. (3) ; MÄUSBACHER R. (1) ;
(1) Physische Geographie, Inst. für Geographie, Friedrich Schiller Univ., Jena, ALLEMAGNE
(2) Biozentrum Klein Flottbek & Botanischer Garten, Univ., Hamburg, ALLEMAGNE
(3) Dept. of Environmental & Geographical Science, Univ., Cape Town, AFRIQUE DU SUD

Abstract

The AA. present a lake sediment record spanning the last 670 years from Eilandvlei, a brackish coastal lake situated mid-way between Cape Town and Port Elizabeth. The results from geochemical and sedimentological analyses point to an increase in minerogenic sediment input from the catchment starting around AD 1400. Changes in the seasonal distribution of rainfall during the Little Ice Age may have altered river discharge and increased erosion rates and fluvial sediment transport in pre-colonial times. A rising mean lake level, possibly associated with an altered water balance or relative sea-level rise, may offer an explanation for the deposition of finer sediments. After AD 1450, reduced burial flux of elements associated with autochthonous sediment formation may have resulted from ecological changes in Eilandvlei. Then, increasing sediment and nutrient flux into Eilandvlei is highlighted following the arrival of European colonists and land use change

Source

Thematical fascicle

published at : Geografiska annaler. Series A. Physical geography / ISSN 0435-3676 / CODEN GAPGAP

Editor : Svenska sällskapet för antropologi och geografi, Stockholm - SUEDE (1965)

Millesime : 2013, vol. 95, no 4 [pp. 345-360]

Bibliographic references : 2 p.

Collation : fig., tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 2704 A

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1111/geoa.12015

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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