Mechanical control of floating aquatic weed: Kainji Lake experience

Daddy, F. and Ladu, B.M.B. and Salzwedel, H. and Isa, A.U. (2003) Mechanical control of floating aquatic weed: Kainji Lake experience. In: 16th Annual Conference of the Fisheries Society of Nigeria (FISON) , 4-9 November 2001 ,Maiduguri, Nigeria, pp. 298-303.

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Abstract

The paper describes the uniqueness and invasiveness of water hyacinth (Eichhornia crassipes) on Lake Kainji (Nigeria). The mechanical blocking device design concept based on the Kainji Lake flooding regime is also highlighted. Water hyacinth coverage, that was over 23% at high water in level in 1994, was reduced to 0.75% in the same period in 2000. Although this feat cannot be wholly ascribed to mechanical control effort alone, the first year of the device's full operation more than 1.04 million kg of fresh weight of water hyacinth were trapped, collected and deposited in two separate dumping pits, each at about 1 km off the shoreline of either side of the Lake. On further analysis over a period of one year of uncleared inflow of water hyacinth indicated the effectiveness of the bloom. Recommendations are advanced for the use of such local but highly technical knowledge to control floating water hyacinth that is vastly taking over the intricate network of Nigerian water systems and within the West African sub-region

Item Type: Conference or Workshop Item
Title: Mechanical control of floating aquatic weed: Kainji Lake experience
Personal Creator/Author:
CreatorsEmail
Daddy, F.
Ladu, B.M.B.
Salzwedel, H.
Isa, A.U.
Page Range: pp. 298-303
Date: 2003
Event Title: 16th Annual Conference of the Fisheries Society of Nigeria (FISON)
Event Type: Conference
Event Location: Maiduguri, Nigeria
Event Dates: 4-9 November 2001
Issuing Agency: Fisheries Society of Nigeria
Uncontrolled Keywords: Nigeria, Lake Kainji; aquatic plants; pest control; plant control; vegetation cover; weeds; Eichhornia crassipes
Subjects: Ecology
Item ID: 3636
Depositing User: Ms Maria Kalentsits
Date Deposited: 07 Jul 2010 07:10
Last Modified: 29 Sep 2011 17:05
Related URLs:
URI: http://aquaticcommons.org/id/eprint/3636

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