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Waterfowl and flood extent in the Hadejia-Nguru wetlands of north-east Nigeria

Published online by Cambridge University Press:  02 January 2001

Gert Polet
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Abstract

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The Hadejia-Nguru wetlands in north-east Nigeria are of international importance for resident and migratory Anatidae but the construction of large dams upstream seriously threatens their continued existence. An analysis of waterfowl census data collected over the period 1988 to 1998 inclusive demonstrated that the extent of flooding had no effect on the species richness of waterfowl but had a significant impact on total numbers. White-faced Whistling Duck Dendrocygna viduata and Garganey Anas querquedula in particular respond to changes in flood extent. The present practice of releasing water from upstream reservoirs should therefore be continued.

Type
Research Article
Information
Bird Conservation International , Volume 10 , Issue 3 , September 2000 , pp. 203 - 209
Copyright
© Copyright 2000 Bird Life International