Your search found 4 records
1 Dumont, H. J. (Ed.) 2009. The Nile: origin, environments, limnology and human use. New York, NY, USA: Springer. 818p. (Monographiae Biologicae, Vol. 89)
River basins ; History ; Ecology ; Ecosystems ; Hydrology ; Natural resources ; Climate ; Limnology ; Biodiversity ; Water quality ; Water pollution ; Bacteria ; Viruses ; Lakes ; Plankton ; Zooplankton ; Phytoplankton ; Fish ; Fisheries ; Benthos ; Crustacea ; Mollusca ; Aquatic plants ; Aquatic insects ; Birds ; Water law / Africa / Ethiopia / Egypt / Sudan / Uyganda / Kenya / Nile River Basin / Rift Valley / Lake Tana / Blue Nile / White Nile / Lake Nasser / Lake Nubia / Lake Kyoga / Lake Victoria / Lake Albert / Lake Turkana / Lake Manzala / Chad Basin
(Location: IWMI HQ Call no: 577.64 G100 DUM Record No: H042456)
2 Nanteza, J.; de Linage, C. R.; Thomas, B. F.; Famiglietti, J. S. 2016. Monitoring groundwater storage changes in complex basement aquifers: an evaluation of the GRACE satellites over East Africa. Water Resources Research, 52(12):9542-9564. [doi: https://doi.org/10.1002/2016WR018846.]
Groundwater ; Water storage ; Monitoring ; Aquifers ; Satellite observation ; Surface water ; Soil moisture ; Water balance ; Models ; Lakes ; Wells ; Water use ; Hydroclimatology ; Climate change ; Precipitation ; Rain ; Estimation / East Africa / Kenya / Uganda / Tanzania / Burundi / Rwanda / Upper Nile Basin / Lake Victoria / Lake Tanganyika / Lake Malawi / Lake Turkana / Lake Albert / Lake Mweru / Lake Edward
(Location: IWMI HQ Call no: e-copy only Record No: H048049)
(3.24 MB)
Although the use of the Gravity Recovery and Climate Experiment (GRACE) satellites to monitor groundwater storage changes has become commonplace, our evaluation suggests that careful processing of the GRACE data is necessary to extract a representative signal especially in regions with significant surface water storage (i.e., lakes/reservoirs). In our study, we use cautiously processed data sets, including GRACE, lake altimetry, and model soil moisture, to reduce scaling factor bias and compare GRACE-derived groundwater storage changes to in situ groundwater observations over parts of East Africa. Over the period 2007–2010, a strong correlation between in situ groundwater storage changes and GRACE groundwater estimates (Spearman's = 0.6) is found. Piecewise trend analyses for the GRACE groundwater estimates reveal significant negative storage changes that are attributed to groundwater use and climate variability. Further analysis comparing groundwater and satellite precipitation data sets permits identification of regional groundwater characterization. For example, our results identify potentially permeable and/or shallow groundwater systems underlying Tanzania and deep and/or less permeable groundwater systems underlying the Upper Nile basin. Regional groundwater behaviors in the semiarid regions of Northern Kenya are attributed to hydraulic connections to recharge zones outside the subbasin boundary. Our results prove the utility of applying GRACE in monitoring groundwater resources in hydrologically complex regions that are undersampled and where policies limit data accessibility.
3 Junqueira, A. B.; Fernandez-Llamazares, A.; Torrents-Tico, M.; Haira, P. L.; Nasak, J. G.; Burgas, D.; Fraixedas, S.; Cabeza, M.; Reyes-Garcia, V. 2021. Interactions between climate change and infrastructure projects in changing water resources: an ethnobiological perspective from the Daasanach, Kenya. Journal of Ethnobiology, 41(3):331-348. [doi: https://doi.org/10.2993/0278-0771-41.3.331]
Climate change ; Infrastructure ; Water resources ; Ethnobiology ; Indigenous Peoples ; Local communities ; Local knowledge ; Environmental factors ; Socioeconomic aspects ; Livelihoods ; Dams / Kenya / Omo-Turkana Basin / Omo River / Lake Turkana
(Location: IWMI HQ Call no: e-copy only Record No: H050716)
https://bioone.org/journalArticle/Download?urlid=10.2993%2F0278-0771-41.3.331
https://vlibrary.iwmi.org/pdf/H050716.pdf
https://vlibrary.iwmi.org/pdf/H050716.pdf
(1.32 MB) (1.32 MB)
The fast and widespread environmental changes that have intensified in the last decades are bringing disproportionate impacts to Indigenous Peoples and Local Communities. Changes that affect water resources are particularly relevant for subsistence-based peoples, many of whom already suffer from constraints regarding reliable access to safe water. Particularly in areas where water is scarce, climate change is expected to amplify existing stresses in water availability, which are also exacerbated by multiple socioeconomic drivers. In this paper, we look into the local perceptions of environmental change expressed by the Daasanach people of northern Kenya, where the impacts of climate change overlap with those brought by large infrastructure projects recently established in the Omo River. We show that the Daasanach have rich and detailed understanding of changes in their environment, especially in relation to water resources. Daasanach understand observations of change in different elements of the social-ecological system as an outcome of complex interactions between climatic and non-climatic drivers of change. Our findings highlight the perceived synergistic effects of climate change and infrastructure projects in water resources, driving multiple and cascading impacts on biophysical elements and local livelihoods. Our results also demonstrate the potential of Local Ecological Knowledge in enhancing the understanding of complex social-ecological issues, such as the impacts of environmental change in local communities. To minimize and mitigate the social-ecological impacts of development projects, it is essential to consider potential synergies between climatic and socioeconomic factors and to ensure inclusive governance rooted in local understandings of environmental change.
4 Englezos, N.; Kartala, X.; Koundouri, P.; Tsionas, M.; Alamanos, A. 2023. A novel hydroeconomic - econometric approach for integrated transboundary water management under uncertainty. Environmental and Resource Economics, 84(4):975-1030. [doi: https://doi.org/10.1007/s10640-022-00744-4]
Transboundary waters ; Water management ; Water resources ; Econometrics ; Economic aspects ; Hydrology ; Uncertainty ; Climate change ; Water availability ; Stochastic processes ; River basins ; Water allocation ; Water power ; Water supply ; Water extraction ; Water demand ; Water use / Ethiopia / Kenya / Omo River / Lake Turkana
(Location: IWMI HQ Call no: e-copy only Record No: H051798)
https://link.springer.com/content/pdf/10.1007/s10640-022-00744-4.pdf?pdf=button
https://vlibrary.iwmi.org/pdf/H051798.pdf
https://vlibrary.iwmi.org/pdf/H051798.pdf
(4.20 MB) (4.20 MB)
The optimal management of scarce transboundary water resources among competitive users is expected to be challenged by the effects of climate change on water availability. The multiple economic and social implications, including conflicts between neighbouring countries, as well as competitive sectors within each country are difficult to estimate and predict, to inform policy-making. In this paper, this problem is approached as a stochastic multistage dynamic game: we develop and apply a novel framework for assessing and evaluating different international strategies regarding transboundary water resources use, under conditions of hydrological uncertainty. The Omo-Turkana transboundary basin in Africa is used as a case study application, since it increasingly faces the above challenges, including the international tension between Kenya and Ethiopia and each individual country’s multi-sectoral competition for water use. The mathematical framework combines a hydro-economic model (water balance, water costs and benefits), and an econometric model (production functions and water demand curves) which are tested under cooperative and non-cooperative conditions (Stackelberg “leader–follower” game). The results show the cross-country and cross-sectoral water use—economic trade-offs, the future water availability for every game case, the sector-specific production function estimations (including residential, agriculture, energy, mining, tourism sectors), with nonparametric treatment, allowing for technical inefficiency in production and autocorrelated Total Factor Productivity, providing thus a more realistic simulation. Cooperation between the two countries is the most beneficial case for future water availability and economic growth. The study presents a replicable, sophisticated modelling framework, for holistic transboundary water management.
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