Preliminary survey of water hyacinth in Lake Tana, Ethiopia

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Résumé

Investigation of water hyacinth was conducted from October 27, 2011 to November 3, 2011 by interdisciplinary expedition groups. A total of 24 sites were delineated using geographical positioning system (GPS) during investigation of water hyacinth incidence along the whole periphery of Lake Tana. Water hyacinth was started from Mitreha Abawarka kebele of Gondar zuria woreda specifically around at Netseba village with an estimated of 3 hectare area coverage. Highest infestation of the weed was observed at Megech River mouth with estimated area coverage of c. 80-100 hectare. Its infestation extends up to Dirma River mouth. Especial adaptation of water hyacinth on land based conditions at which soil moisture relatively high was observed around Tana woina kebele of Gondar zuria woreda adjacent lake shore side. The incidence and depth of water hyacinth infestation in Lake Tana is still at its infant stage, because except the North and to some extent North-east direction, the other parts of Lake Tana were devoid of the water hyacinth. Generally water hyacinth remains a major problem in Lake Tana where effective control programs are not in place as soon as possible.

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Preliminary survey of water hyacinth in Lake Tana, Ethiopia. (2023). Helix, 2(1). https://doi.org/10.59411/0rxfsy95
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Preliminary survey of water hyacinth in Lake Tana, Ethiopia. (2023). Helix, 2(1). https://doi.org/10.59411/0rxfsy95

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Références

Kateregga, E., and Sterner, T., (2007). Indicators for an invasive species: Water hyacinths.

Ecological indicators volume 7, issue 2Apr 2007.

LVEMP, (1996). Lake Victoria Environment Management Project (Kenya, Tanzania, Uganda).

Global Environment Facility (GEF) Project Document. Washington, DC: The World Bank

Ogutu-Ohwayo, R., Hecky, R.E., Cohen, A.S., and Kaufman, L., (1997). Human impacts on the

African Great Lakes. Env. Biol. Fish 50:117-131

Orach-Meza, F.L. (1996). Water hyacinth: its problems and the means of control in Uganda. In

Strategies for water hyacinth control. Food and Agriculture Organization of the United

Nations,Rome, Italy, pp. 105–112

Opande, G.O., Onyang, J.C., Wagai, S.O. (2004). “Lake Victoria: The water hyacinth (Echhornia

crassipes (MART), its socio-economic effects, control measures and resurgence in the

Winam gulf.” Limnologica 34: 105-109

Penfound, W. T., and Earle, T. T., (1948). The Biology of the Water Hyacinth. Ecological

Monographs 18:447–472

Phiri, G. (1997). An update on water hyacinth distribution and biological control. Water Hyacinth Newsletter, CAB International, 6 (Jun), 5.

Thompson, K. (1991). The options available in Uganda for water hyacinth control. In Thompson,

K., ed., The water hyacinth in Uganda: ecology, distribution, problems and strategies for

control. Food and Agriculture Organization of the United Nations, Rome, Italy.

TEP/UGA/9153/A. pp. 37–2.

Twongo, T., Bugenyi, F.W.B., and Wanda, F., (1995). The potential for further proliferation of

water hyacinth in lakes Victoria, Kyoga and Kwania and some urgent aspects for research.

Afr. J. Trop. Hydrobiol. Fish. 6:1-10.

Willoughby, N.G.; Watson, I.G.; Lauer, S.; Grant, I.F. (1993). Effects of water hyacinth on the

biodiversity and abundance of fish and invertebrates in Lake Victoria, Uganda. Natural

Resources Institute. Natural Resources Institute, London, UK. Publication No. 10066,

AO238. 27 pp.

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