Your search found 8 records
1 International Water Management Institute (IWMI). 2007. Water Figures Africa: news of IWMI’s work in Africa. Water Figures Africa: news of IWMI’s work in Africa, 1. 6p. [doi: https://doi.org/10.3910/2009.365]
River basin management ; Wetlands ; Public health ; Malaria / Ghana / Ethiopia / Accra / Koka Reservoir
(Location: IWMI HQ Call no: IWMI 630.7 G100 IWM Record No: H040154)
2 Lautze, J.; McCartney, Matthew; Kirshen, P.; Olana, D.; Jayasinghe, Gayathree; Spielman, A. 2007. Effect of a large dam on malaria risk: The Koka Reservoir in Ethiopia. Tropical Medicine and International Health, 12(8):982-989.
Malaria ; Risks ; Health hazards ; Analysis ; Dams ; Reservoirs ; Climate / Ethiopia / Rift Valley / Koka Reservoir
(Location: IWMI HQ Call no: IWMI 614.532 G136 LAU Record No: H040357)
3 Kibret, Solomon; McCartney, Matthew; Lautze, J. 2008. Mosquitoes and malaria in the vicinity of the Koka Reservoir, Ethiopia. In Humphreys, E.; Bayot, R. S.; van Brakel, M.; Gichuki, F.; Svendsen, M.; Wester, P.; Huber-Lee, A.; Cook, S. Douthwaite, B.; Hoanh, Chu Thai; Johnson, N.; Nguyen-Khoa, Sophie; Vidal, A.; MacIntyre, I.; MacIntyre, R. (Eds.). Fighting poverty through sustainable water use: proceedings of the CGIAR Challenge Program on Water and Food, 2nd International Forum on Water and Food, Addis Ababa, Ethiopia, 10-14 November 2008. Vol.1. Keynotes; Cross-cutting topics. Colombo, Sri Lanka: CGIAR Challenge Program on Water and Food. pp.34-37.
Malaria ; Anopheles culicifacies ; Mosquitoes ; Disease vectors ; Reservoirs ; Dams ; Villages ; Surveys / Ethiopia / Koka Reservoir / Awash River
(Location: IWMI HQ Call no: IWMI 333.91 G000 HUM Record No: H041678)
http://cgspace.cgiar.org/bitstream/handle/10568/3706/IFWF2_proceedings_Volume%20I.pdf?sequence=1
https://vlibrary.iwmi.org/pdf/H041678.pdf
https://vlibrary.iwmi.org/pdf/H041678.pdf
(7.964MB)
4 Kibret, S.; McCartney, Matthew; Lautze, Jonathan; Jayasinghe, G. 2009. Malaria transmission in the vicinity of impounded water: evidence from the Koka Reservoir, Ethiopia. Colombo, Sri Lanka: International Water Management Institute (IWMI). 39p. (IWMI Research Report 132) [doi: https://doi.org/10.3910/2009.129]
Malaria ; Waterborne diseases ; Disease vectors ; Habitats ; Disease control ; Entomology ; Epidemiology ; Surveys ; Dams ; Reservoirs ; Villages ; Case studies / Africa / Ethiopia / Koka Reservoir / Rift Valley / Awash River Basin
(Location: IWMI HQ Call no: IWMI 614.532 G100 KIB Record No: H042338)
(1.26 MB)
The construction of dams in Africa is often associated with adverse malaria impacts in surrounding communities. However, the degree and nature of these impacts are rarely quantified and the feasibility of manipulating reservoir water levels to control mosquito breeding has not been previously investigated in Africa. This report describes entomological and epidemiological studies conducted around the Koka Dam and Reservoir in Ethiopia. The research findings confirm the role of the reservoir in increasing malaria transmission and provide evidence that there is potential to use dam operation in integrated malaria control strategies.
5 Teklu, B. M.; Tekie, H.; McCartney, Matthew; Kibret, S. 2010. The effect of physical water quality and water level changes on the occurrence and density of Anopheles mosquito larvae around the shoreline of the Koka reservoir, central Ethiopia. Hydrology and Earth System Sciences, 14(12):2595-2603. [doi: https://doi.org/10.5194/hess-14-2595-2010]
Mosquitoes ; Anopheles ; Breeding places ; Reservoirs ; Malaria / Africa / Ethiopia / Koka Reservoir / Ejersa Village / Kuma Village
(Location: IWMI HQ Call no: e-copy only Record No: H043432)
http://www.hydrol-earth-syst-sci.net/14/2595/2010/hess-14-2595-2010.pdf
https://vlibrary.iwmi.org/pdf/H043432.pdf
https://vlibrary.iwmi.org/pdf/H043432.pdf
(0.52 MB)
Entomological studies to determine the effect of the physical characteristics of mosquito larval breeding water bodies and reservoir water level changes on the occurrence of Anopheles mosquito larvae were conducted in two villages at Koka reservoir in central Ethiopia between August and December 2007. Of the two study villages, Ejersa is located close to the reservoir, and Kuma is 5 km away from it. Data on the type, number and physical characteristics of Anopheles larval breeding habitat, species composition and densities of anopheles mosquitoes in and around the study villages were investigated and recorded. Meteorological and reservoir water level data were compared with availability of Anopheles larval breeding sites and densities. Entomological data, derived from weekly larval collections, showed that Anopheles pharoensis Theobald, Anopheles gambiae s.l. Giles, Anopheles coustani Laveran and Anopheles squamosus Theobald were breeding in the study area. The mean larval density of An. gambiae s.l. in this study was higher in slightly turbid and shallow aquatic habitat than in turbid and relatively deep aquatic habitat. The density of An. pharoensis in habitat with floating vegetation and with relatively shady conditions was significantly higher than that of less shaded aquatic habitat and greater emergent vegetation. There was also a positive correlation between the occurrence of Anopheles larvae with the water and daily minimum atmospheric temperature. Similarly at Ejersa, over the sampling period, there was a positive correlation between falling reservoir water levels and the number of positive breeding habitats. These results confirm that physical characteristics of the water bodies play an important role in the species composition, total Anopheles larval count, and the density of Anopheles mosquitoes. Suitable breeding habitat in the vicinity of the reservoir village was strongly associated with the reservoir. This is particularly important for An. pharoensis and An. gambiae s.l. which are important vectors of malaria in the area.
6 McCartney, Matthew; King, J. 2011. Use of decision support systems to improve dam planning and dam operation in Africa. [Report of the CGIAR Challenge Program on Water and Food project on Improved Planning of Large Dam Operation: Using Decision Support Systems to Optimize Benefits, Safeguard Health and Protect the Environment] Colombo, Sri Lanka: CGIAR Challenge Program on Water and Food (CPWF). 74p. (CPWF Research for Development (R4D) Series 2)
Dams ; Water management ; Decision support systems ; Decision making ; Environmental effects ; Social aspects ; Rivers ; Ecosystems ; Flow ; River basins ; Water quality ; Health hazards ; Vectorborne diseases ; Irrigation ; Electricity generation / Africa / Ghana / Nigeria / Ethiopia / Egypt / Lesotho / Zambia / Zimbabwe / Mali / Uganda / Sudan / Chara Chara Dam / Akosombo Dam / High Aswan Dam / Katse Dam / Kariba Dam / Manantali Dam / Nalubaale-Kiira Dam / Gariep and Van der Kloof Dam / Roseires Dam / Hadeji-Nguru Wetlands / Koka Reservoir / Upper Blue Nile
(Location: IWMI HQ Call no: e-copy only Record No: H043883)
https://cgspace.cgiar.org/bitstream/handle/10568/3623/R4D02_dss_sept4_web.pdf?sequence=8
https://vlibrary.iwmi.org/pdf/H043883.pdf
https://vlibrary.iwmi.org/pdf/H043883.pdf
(2.00 MB) (2.10 MB)
7 Reis, J.; Culver, T. B.; McCartney, Matthew; Lautze, Jonathan; Kibret, S. 2011. Water resources implications of integrating malaria control into the operation of an Ethiopian dam. Water Resources Research, 47(W09530):10p. [doi: https://doi.org/10.1029/2010WR01016]
Water resources ; Waterborne diseases ; Malaria ; Dams ; Reservoirs ; Simulation models ; Water power ; Energy generation ; Electricity generation ; Environmental flows ; Downstream ; Flooding ; Flood control ; Irrigation / Ethiopia / Awash River Basin / Koka Reservoir
(Location: IWMI HQ Call no: e-copy only Record No: H044345)
(0.70 MB)
This paper investigates the water resources implications of using a method of hydrological control to reduce malaria around the Koka reservoir in central Ethiopia. This method is based on recent ndings that malaria is transmitted from the shoreline of the Koka reservoir, and on a similar method that was used to control malaria some 80 yr ago in the United States. To assess the feasibility of implementing hydrological control at Koka, we considered the potential impact of the modi ed management regime on the bene ts derived from current uses of the reservoir water (i.e., hydropower, irrigation, ood control, water supply, and downstream environmental ows). We used the HEC-ResSim model to simulate lowering the reservoir by a rate designed to disrupt larval development, which is expected to reduce the abundance of adult mosquito vectors and therefore reduce malaria transmission during the season in which transmission of the disease peaks. A comparison was made of major reservoir uses with and without the malaria control measure. In the 26-yr simulation, application of the malaria control measure increased total average annual electricity generation from 87.6 GWh x y -1 to 92.2 GWh x y -1 (i.e., a 5.3% increase) but resulted in a small decline in rm power generation (i.e., guaranteed at 99.5% reliability) from 4.16 MW to 4.15 MW (i.e., a 0.2% decrease). Application of the malaria control measure did not impact the ability of the reservoir to meet downstream irrigation demand and reduced the number of days of downstream ooding from 28 to 24 d. These results indicate that targeted use of hydrological control for malaria vector management could be undertaken without sacri cing the key bene ts of reservoir operation.
8 Kibret, Solomon; Lautze, Jonathan; Boelee, Eline; McCartney, Matthew. 2012. How does an Ethiopian dam increase malaria?: entomological determinants around the Koka Reservoir. Tropical Medicine and International Health, 17(11):1320-1328. [doi: https://doi.org/10.1111/j.1365-3156.2012.03077.x]
(Location: IWMI HQ Call no: e-copy only Record No: H045057)
(0.21 MB)
Objectives: To identify entomological determinants of increased malaria transmission in the vicinity of the Koka reservoir in Central Ethiopia.Methods: Larval and adult mosquitoes were collected between August 2006 and December 2007 in villages close to (<1 km) and farther away from (>6 km) the Koka reservoir. Adult mosquitoes were tested for the source of blood meal and sporozoites.Results: In reservoir villages, shoreline puddles and seepage at the base of the dam were the most productive Anopheles-breeding habitats. In villages farther from the dam (control villages), rain pools were important breeding habitats. About five times more mature anopheline larvae and six times more adult anophelines were found in the villages near the reservoir. Anopheles arabiensis and Anopheles pharoensis were the most abundant species in the reservoir villages throughout the study period. The majority of adult and larval anophelines were collected during the peak malaria transmission season (September–October). Blood meal tests suggested that A. arabiensis fed on humans more commonly (74.6%) than A. pharoensis (62.3%). Plasmodium falciparum-infected A. arabiensis (0.97–1.32%) and A. pharoensis (0.47–0.70%) were present in the reservoir villages. No P. falciparum-infected anophelines were present in the control villages.Conclusions: The Koka reservoir contributes to increased numbers of productive Anopheles-breeding sites. This is the likely the cause for the greater abundance of malaria vectors and higher number of malaria cases evidenced in the reservoir villages. Complementing current malaria control strategies with source reduction interventions should be considered to reduce malaria in the vicinity of the reservoir.
Powered by DB/Text WebPublisher, from
