This study looks at the groundwater issues in the dry zone of Sri Lanka and shows how the use of remote sensing with high-resolution images can help in groundwater management. A new approach is developed for automatic extraction of the location of agrowells using high-spatial-resolution satellite...
Sood, Aditya
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Manthrithilake, Herath
,
Siddiqui, Salman
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Rajah, Ameer
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Pathmarajah, S.
,
[Managing shallow aquifers in the dry zone of Sri Lanka]
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Managing shallow aquifers in the dry zone of Sri Lanka
Reviving the Ganges Water Machine (GWM), coined 40 years ago, is the most opportune solution for mitigating the impacts of recurrent droughts and floods in the Ganges River Basin in South Asia. GWM create subsurface storage (SSS) by pumping more groundwater from the aquifers before the monsoon fo...
Surinaidu, L.
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Muthuwatta, Lal P.
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Amarasinghe, Upali A.
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Jain, S.K.
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Kumar, S.
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Singh, S.
,
[Reviving the Ganges water machine: accelerating surface water and groundwater interactions in the Ramganga sub-basin]
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Reviving the Ganges water machine: accelerating surface water and groundwater interactions in the Ramganga sub-basin
This study examines farmers perceptions of short- and long-term variability in climate, their ability to discern trends in climate and how the perceived trends converge with actual weather observations in five districts of Eastern Province in Kenya where the climate is semi-arid with high intra-...
Rao, K.P.C.
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Ndegwa WG
,
Kizito K
,
Oyoo A
,
[Climate variability and change: Farmer perceptions and understanding of intra-seasonal variability in rainfall and associated risk in semi-arid Kenya]
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Climate variability and change: Farmer perceptions and understanding of intra-seasonal variability in rainfall and associated risk in semi-arid Kenya
Trends in rainfall series were investigated at 16 stations in Ghana over the period 1960-2005. Time series were first de-correlated using an effective pre-whitening methodology and then submitted to the resampling-based Mann-Kendall test. Field significances were assessed using the regional avera...
Lacombe, Guillaume
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McCartney, Matthew P.
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Forkuor, Gerald
,
[Drying climate in Ghana over the period 1960-2005: evidence from the resampling-based Mann-Kendall test at local and regional levels.]
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Drying climate in Ghana over the period 1960-2005: evidence from the resampling-based Mann-Kendall test at local and regional levels.
Rural communities in sub-Saharan Africa commonly rely on shallow hand-dug wells and springs; consequently, shallow aquifers are an extremely important water source. Increased utilisation of shallow groundwater could help towards achieving multiple sustainable development goals (SDGs) by positivel...
Walker, D.
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Parkin, G.
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Gowing, J.
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Haile, Alemseged Tamiru
,
[Development of a hydrogeological conceptual model for shallow aquifers in the data scarce Upper Blue Nile Basin]
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Development of a hydrogeological conceptual model for shallow aquifers in the data scarce Upper Blue Nile Basin
1. Rainfall is the prime climatic factor underpinning the dynamics of African savanna ungulates,but no study has analysed its influence on the abundance of these ungulates at monthly to multiannual time scales.
2. We report relationships between rainfall and changes in age- and sex-structured ...
Ogutu, Joseph O.
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Peipho, H.P.
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Dublin, H.T.
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Bhola, N.
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Reid, Robin S.
,
[Rainfall influences on ungulate population abundance in the Mara-Serengeti ecosystem]
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Rainfall influences on ungulate population abundance in the Mara-Serengeti ecosystem
This article proposes strategy for agricultural technology development for semi-arid West Africa. The strategy evaluation consists of two aspects: a) a review of the successes in the region; and b) analysis with mathematical programming of the potential impacts and constraints to various new tech...
Sanders, J.H.
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Shapiro, Barry I.
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Ramaswamy, S.
,
[A strategy for technology development for semi-arid sub-Saharan Africa]
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A strategy for technology development for semi-arid sub-Saharan Africa
Agriculture is the mainstay of the country and also the major source of employment and income. About 85 percent of the population live in the rural areas and are primarily engaged in agriculture and related activities. Among the other agricultural sector, livestock production contributes about 30...
Bizuwork, A.
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Tadddesse, G.
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Sonder, Kai
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Peden, Donald G.
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Jobre, Y.
,
[Comparative assessment of forage and livestock density in Tekeze River Basin]
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Comparative assessment of forage and livestock density in Tekeze River Basin
Not only does livestock make an important contribution to rural incomes and export earnings in the Sahel, it is also kept as insurance against weather risk. Fluctuations in livestock prices can therefore trigger food entitlement failures. Using monthly price data from Niger, we show that livestoc...