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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
The decline of water hyacinth on Lake Victoria was due to biological control by Neochetina spp.
Aquatic Botany, Volume 87, No. 1, Year 2007
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Description
There has been some debate recently about the cause of the decline of water hyacinth on Lake Victoria. While much of this evidence points to classical biological control as the major factor, the El Niño associated weather pattern of the last quarter of 1997 and the first half of 1998 has confused the issue. We argue first that the reductions in water hyacinth on Lake Victoria were ultimately caused by the widespread and significant damage to plants by Neochetina spp., although this process was increased by the stormy weather associated with the El Niño event; second that increased waves and current on Lake Victoria caused by El Niño redistributed water hyacinth plants around the lake; and third that a major lake-wide resurgence of water hyacinth plants on Lake Victoria has not occurred and will not occur unless the weevil populations are disrupted. We conclude that the population crash of water hyacinth on Lake Victoria would not have occurred in the absence of the weevils, but that it may have been hastened by stormy weather associated with the El Niño event. © 2006 Elsevier B.V. All rights reserved.
Authors & Co-Authors
Wilson, John R.
South Africa, Stellenbosch
Stellenbosch University
Ajuonu, Obinna
Benin, Cotonou
International Institute of Tropical Agriculture Contonou
Center, Ted D.
United States, Fort Lauderdale
Usda Ars Invasive Plant Research Laboratory
Hill, M. P.
South Africa, Grahamstown
Rhodes University
Julien, Michael H.
Australia, Canberra
Csiro Entomology
Katagira, Francisca F.
Tanzania, Dar es Salaam
Ministry of Agriculture and Food Security
Neuenschwander, Peter
Benin, Cotonou
International Institute of Tropical Agriculture Contonou
Njoka, Stephen W.
Kenya, Nairobi
Kenya Agricultural Research Institute
Ogwang, James Apenyo
Uganda, Kampala
National Agricultural Research Organization
Reeder, Robert H.
United Kingdom, Wallingford
Cabi, United Kingdom
Van, Thai
United States, Fort Lauderdale
Usda Ars Invasive Plant Research Laboratory
Statistics
Citations: 101
Authors: 11
Affiliations: 9
Identifiers
Doi:
10.1016/j.aquabot.2006.06.006
Research Areas
Environmental
Study Design
Cross Sectional Study