Determination of nitrate retention capacity of Kalahari sands using a permeameter: Case study of Mashare farm soil in the Okavango River basin

2018 ◽  
Vol 107 ◽  
pp. 19-24 ◽  
Author(s):  
Andrea Vushe ◽  
Herta Mbadhi
2016 ◽  
Vol 11 (31) ◽  
pp. 2871-2881 ◽  
Author(s):  
Vushe Andrea ◽  
von Landsberg Loffie ◽  
Groengroeft Alexander ◽  
A Mashauri Damas

2020 ◽  
Vol 12 (17) ◽  
pp. 7187
Author(s):  
Dariusz Młyński

This work aimed to quantify how the different parameters of the Snyder model influence the errors in design flows. The study was conducted for the Kamienica Nowojowska catchment (Poland). The analysis was carried out according to the following stages: determination of design precipitation, determination of design hyetograph, sensitivity analysis of the Snyder model, and quality assessment of the Snyder model. Based on the conducted research, it was found that the Snyder model did not show high sensitivity to the assumed precipitation distribution. The parameters depending on the retention capacity of the catchment had much greater impact on the obtained flow values. The verification of the model quality showed a significant disproportion in the calculated maximum flow values with the assumed return period.


2020 ◽  
Vol 08 (12) ◽  
pp. 94-107
Author(s):  
Chung N. Luong ◽  
Lan T. Ha ◽  
Thanh C. Pham ◽  
Hung X. Dinh ◽  
Thanh T. Hoang ◽  
...  

Water Policy ◽  
2007 ◽  
Vol 9 (S2) ◽  
pp. 149-167 ◽  
Author(s):  
P. S. vH. Heyns

The three riparian states that share the perennial flow of the Okavango watercourse system established the Permanent Okavango River Basin Water Commission (OKACOM) as a basis for managing that river's basin. The institution has a collective responsibility to advise the basin states about the best options for joint utilisation and protection of the basin. This complex task is compounded by the pristine nature of the ecosystems, the pressing development needs of all the basin states and international pressure to protect the unique Okavango Delta. The development of the basin for the benefit of the population requires an understanding of the potential of the natural resources to support identified development options. The Commission is responsible for ensuring good collective governance that meets the objectives and expectations of the sovereign basin states, while strengthening the levels of governance in each individual state. This case study examines the relevance of the trialogue hypothesis, which states that effective interactions between political, social and scientific processes are essential for good governance. The study has revealed that the close relationship between the political will to create a management institution, understanding the needs of civil society and facilitating the scientific investigations required for planning purposes supports the trialogue hypothesis of good environmental governance.


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