Conflict Intensity in African Water Basins: Water Stress and the Effectiveness of Water Management Strategies

Author(s):  
Sarah Boyce

Access to cross-border water sources in the African regions of the Nile River, Zambezi River, and Lake Turkana Basins becomes less certain as global population, human consumption, and climate change increase. Uncertainty during periods of high demand for water in agro-dependent economies creates circumstances of water stress, where social stability is low as stakeholders compete over scarce water sources. Longstanding traditions of political power, such as colonial rule and the status of regional superpowers, reinforce the unequal resource distribution. All three regions encounter water stress in the form of floods or droughts. They rely on dam projects that modify water distribution and basin agreements that reallocate political power to manage stress. The basins vary, however, in conflict intensity and effectiveness of water management strategies. The Nile River Basin exhibits low-intensity conflict and has institutionalized collaborative management strategies; the Zambezi River Basin demonstrates medium-intensity conflict with theoretically collaborative initiatives that fall short in practice; the Lake Turkana Basin exemplifies high-intensity conflict, lacking collaborative agreements. In order to address the discrepancy in outcomes, this study asks: what factors contribute to the intensity of conflict surrounding water stress? And, to what extent are water management practices effective in promoting cooperation and preventing conflict? The study concludes that the most intense conflicts occur in rural localities, where social instability is high and resource distribution is uneven. Collaborative agreements and international involvement in water management initiatives increase social stability and decrease conflict intensity by institutionalizing equitable distribution of water in a changing environment. 

Author(s):  
Sarah Boyce

Access to cross-border water sources in the African regions of the Nile River, Zambezi River, and Lake Turkana Basins becomes less certain as global population, human consumption, and climate change increase. Uncertainty during periods of high demand for water in agro-dependent economies creates circumstances of water stress, where social stability is low as stakeholders compete over scarce water sources. Longstanding traditions of political power, such as colonial rule and the status of regional superpowers, reinforce the unequal resource distribution. All three regions encounter water stress in the form of floods or droughts. They rely on dam projects that modify water distribution and basin agreements that reallocate political power to manage stress. The basins vary, however, in conflict intensity and effectiveness of water management strategies. The Nile River Basin exhibits low-intensity conflict and has institutionalized collaborative management strategies; the Zambezi River Basin demonstrates medium-intensity conflict with theoretically collaborative initiatives that fall short in practice; the Lake Turkana Basin exemplifies high-intensity conflict, lacking collaborative agreements. In order to address the discrepancy in outcomes, this study asks: what factors contribute to the intensity of conflict surrounding water stress? And, to what extent are water management practices effective in promoting cooperation and preventing conflict? The study concludes that the most intense conflicts occur in rural localities, where social instability is high and resource distribution is uneven. Collaborative agreements and international involvement in water management initiatives increase social stability and decrease conflict intensity by institutionalizing equitable distribution of water in a changing environment. 


OENO One ◽  
2009 ◽  
Vol 43 (1) ◽  
pp. 13 ◽  
Author(s):  
Héctor Valdés-Gómez ◽  
Florian Celette ◽  
Iñaki García de Cortázar-Atauri ◽  
Francisco Jara-Rojas ◽  
Samuel Ortega-Farías ◽  
...  

<p style="text-align: justify;"><strong>Background and aims</strong>: Many models have been developed to evaluate crop growth and development, but few are capable of simulating grapevine systems. The present study was carried out to evaluate the ability of the STICS model to represent grapevine phenology, biomass production, yield and soil water content in two situations differing with respect to rainfall distribution and water management strategies.</p><p style="text-align: justify;"><strong>Methods and results</strong>: Simulations were performed for an irrigated vineyard in Chile and an irrigated and a non-irrigated vineyard in France. The crop model gave a good estimation of the main stages of grapevine phenology (less than six days difference between simulated and observed values). Soil water content was the best simulated variable (R2 = 0.99), whereas grapevine evapotranspiration observed only in Chile (R2 = 0.43) and leaf area index observed only in France (R2= 0.80) were the worst simulated variables. Biomass production, yield and their components were correctly simulated (within the 95 % Student confidence interval around the mean observed value). A comparison of the fraction of transpirable soil water and vine water potential measurements with the water stress indices calculated by the STICS model showed that the time and duration of the grapevine water stress period was correctly estimated.</p><p style="text-align: justify;"><strong>Conclusions</strong>: Therefore, the STICS model was reasonably successful in simulating vine growth and development, and identifying critical periods concerning the vine water status.</p><p style="text-align: justify;"><strong>Significance of the study</strong>: The STICS model can be used to evaluate various water management strategies and their impacts on grape production.</p>


Zootaxa ◽  
2011 ◽  
Vol 2976 (1) ◽  
pp. 1 ◽  
Author(s):  
ALAIN DE CHAMBRIER ◽  
TOMÁŠ SCHOLZ ◽  
ZUHEIR N. MAHMOUD ◽  
JEAN MARIAUX ◽  
MILOSLAV JIRKŮ

Proteocephalidean tapeworms parasitic in Synodontis spp. (Siluriformes: Mochokidae) in Africa are critically reviewed based on examination of their type specimens and extensive new material from Kenya and Sudan. Proteocephalus synodontis Woodland, 1925 and Proteocephalus membranacei Troncy, 1978 are considered to be valid and both species are redescribed. Proteocephalus synodontis differs from congeners parasitic in other African freshwater fishes, including P. membranacei, in the possession of an extraordinarily developed inner longitudinal musculature formed by massive bundles of muscle fibres. A considerable variability was found in the size (35–140 × 30–75 μm) and shape (from elongate, tear-shaped to spherical) of the apical organ, which was present in all specimens from the Nile River basin in the Sudan, but absent in all but two juvenile specimens from Lake Turkana in Kenya. A congruent low molecular variability was also observed and these slight morphological and genetic differences may indicate ongoing allopatric speciation of tapeworms from the two previously connected basins. Nevertheless, all tapeworms were identical in all other morphological and molecular characteristics and are considered conspecific. Proteocephalus largoproglottis Troncy, 1978 from Synodontis membranacea from Lake Chad is synonymized with P. membranacei described from the same host and locality. Proteocephalus synodontis and P. membranacei differ from each other in the development of the inner longitudinal musculature, shape of the scolex and presence of weakly developed, almost indistinguishable ventral osmoregulatory canals in the latter species.


2019 ◽  
Vol 11 (11) ◽  
pp. 53
Author(s):  
Lennon Kledson dos Santos Silva ◽  
Maria Claudjane Jerônimo Leite Alves ◽  
Renato Nunes Costa ◽  
Dayane Mércia Ribeiro Silva ◽  
Jania Claudia Camilo dos Santos ◽  
...  

Water availability is a critical point for dryland recovered on tropical regions of the world. This problem to become higher with the lacking information about the ecophysiologial behavior of the native plants on the initial growth stage under field conditions, mainly when these plants are submitted to different water availability levels. To address this question, we evaluated different water management strategies on the ecophysiological features of the five young native plants establishment in a degraded area located in the Caatinga, a dryland Brazilian forest. The water management strategies effects on native plants were checked by analyzing the photosynthesis rates, gas exchange and photochemistry efficiency in leaves of Crataeva tapia, Erythrina mulungu, Handroanthus impetiginosus, Tabebuia aurea and Ziziphus joazeiro. The experiment had four treatments (waterbox use, bovine manure, hydrogel, bovine manure plus hydrogel) and control. In the initial growth stage and under field conditions, the effects of water stress or water deficiency on the photosynthetic rates, gas exchange and chlorophyll fluorescence a of the T. aurea, H. impetiginosus, C. tapia and E. mulungu, exposed to waterbox and hydrogel, associated or not with bovine manure, were partially or totally mitigated. The Z. joazeiro species has the adaptive intrinsic characteristics that allow them to with stand the most stressful environmental conditions and this naturally allowed presenting greater water use efficiency and absence of damage to the photosynthetic apparatus and high Fv/Fm ratio. In general, the water management strategies studied have alleviated the effects of water stress, totally or partially, on the ecophysiological processes of young native plants under field conditions.


2017 ◽  
Vol 6 (4) ◽  
pp. 64-71
Author(s):  
Mohamed M. Abbas ◽  
Abdin M. A. Salih ◽  
Adil M. Elkider ◽  
Salih H. Hamid

1970 ◽  
Vol 7 (1) ◽  
pp. 135-141
Author(s):  
Debi Prasad Bhattarai

The need for water management on hydrological boundaries is mainly triggered by the growing competition for water or by the need to cooperate in an upstream downstream relation. For an institution operating on political boundaries, not coinciding with the boundaries of the river basin, it is very difficult to allocate or prioritise water or carry out flood control measures. A system of water management on political boundaries will induce the respective authorities to either monopolise the water supply sources within its area and to transfer the problem of flooding to downstream. In this article it is attempted to explore the major transboundary issues that need to be addressed in the whole Brahmaputra River basin. Sharing of resources, sharing of basic data and information and protection and preservation of ecosystem are identified as three major issues. In this context, controversial legal issues between the riparian nations in the past were also analysed which has triggered the scope for integrated approach to manage the Brahmaputra River basin. In the later part of the article, a critical analysis was made to understand the principles, approaches and instruments to address the above problems. Finally, some legal materials are presented which could be used as a basis for solving the major river basin issues.Key words: water management; diversifying water supply sources; water management strategies; NepalJournal of the Institute of Engineering, Vol. 7, No. 1, July 2009, pp. 135-141doi: 10.3126/jie.v7i1.2072


Water ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 190
Author(s):  
Nilo Lima-Quispe ◽  
Cláudia Coleoni ◽  
Wilford Rincón ◽  
Zulema Gutierrez ◽  
Freddy Zubieta ◽  
...  

River basin planning in Bolivia is a relatively new endeavor that is primed for innovation and learning. One important learning opportunity relates to connecting watershed planning to processes within other planning units (e.g., municipalities) that have water management implications. A second opportunity relates to integrating watershed management, with a focus on land-based interventions, and water resources management, with a focus on the use and control of surface and groundwater resources. Bolivia’s River Basin Policy and its primary planning instrument, the River Basin Master Plan (PDC in Spanish), provide the relevant innovation and learning context. Official guidance related to PDC development lacks explicit instructions related to the use of analytical tools, the definition of spatially and temporally dis-aggregated indicators to evaluate specific watershed and water management interventions, and a description of the exact way stakeholders engage in the evaluation process. This paper describes an effort to adapt the tenets of a novel planning support practice, Robust Decision Support (RDS), to the official guidelines of PDC development. The work enabled stakeholders to discern positive and negative interactions among water management interventions related to overall system performance, hydrologic risk management, and ecosystem functions; use indicators across varying spatial and temporal reference frames; and identify management strategies to improve outcomes and mitigate cross-regional or inter-sectorial conflicts.


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