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Journal articles on the topic 'Water quality – Botswana – Okavango Delta'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

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1

West, DT, JG van As, and LL van As. "Surface water quality in the Okavango Delta panhandle, Botswana." African Journal of Aquatic Science 40, no. 4 (2015): 359–72. http://dx.doi.org/10.2989/16085914.2015.1104288.

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2

Campbell, G., S. Johnson, T. Bakaya, H. Kumar, and J. Nsatsi. "Airborne geophysical mapping of aquifer water quality and structural controls in the Lower Okavango Delta, Botswana." South African Journal of Geology 109, no. 4 (2006): 475–94. http://dx.doi.org/10.2113/gssajg.109.4.475.

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3

Reiser, Fabienne, Joel E. Podgorski, Cedric Schmelzbach, et al. "Constraining helicopter electromagnetic models of the Okavango Delta with seismic-refraction and seismic-reflection data." GEOPHYSICS 79, no. 3 (2014): B123—B134. http://dx.doi.org/10.1190/geo2013-0278.1.

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Electrical resistivity models derived from exceptionally high-quality helicopter transient electromagnetic data recorded across the Okavango Delta in Botswana, one of the world’s great inland deltas or megafans, include three principal layers: (1) an upper heterogeneous layer of dry and water-saturated sand, (2) an intermediate electrically conductive layer that likely comprises saline-water-saturated sand and clay, and (3) a lower fan-shaped electrically resistive layer of freshwater-saturated sand/gravel and/or crystalline basement. If part of the lower layer comprises a freshwater aquifer,

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4

Hertkorn, Norbert, Mourad Harir, Kaelin M. Cawley, Philippe Schmitt-Kopplin, and Rudolf Jaffé. "Molecular characterization of dissolved organic matter from subtropical wetlands: a comparative study through the analysis of optical properties, NMR and FTICR/MS." Biogeosciences 13, no. 8 (2016): 2257–77. http://dx.doi.org/10.5194/bg-13-2257-2016.

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Abstract. Wetlands provide quintessential ecosystem services such as maintenance of water quality, water supply and biodiversity, among others; however, wetlands are also among the most threatened ecosystems worldwide. Natural dissolved organic matter (DOM) is an abundant and critical component in wetland biogeochemistry. This study describes the first detailed, comparative, molecular characterization of DOM in subtropical, pulsed, wetlands, namely the Everglades (USA), the Pantanal (Brazil) and the Okavango Delta (Botswana), using optical properties, high-field nuclear magnetic resonance (NMR

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5

Hertkorn, N., M. Harir, K. M. Cawley, P. Schmitt-Kopplin, and R. Jaffé. "Molecular characterization of dissolved organic matter from subtropical wetlands: a comparative study through the analysis of optical properties, NMR and FTICR/MS." Biogeosciences Discussions 12, no. 16 (2015): 13711–65. http://dx.doi.org/10.5194/bgd-12-13711-2015.

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Abstract. Wetlands provide quintessential ecosystem services such as maintenance of water quality, water supply and biodiversity, among others; however, wetlands are also among the most threatened ecosystems worldwide. They are usually characterized by high levels of natural dissolved organic matter (DOM), representing a critical component in wetland biogeochemistry. This study describes the first detailed, comparative, molecular characterization of DOM in sub-tropical, pulsed, wetlands, namely the Everglades (USA), the Pantanal (Brazil) and the Okavango Delta (Botswana), using optical propert

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6

Gondo, Reniko, Oluwatoyin Dare Kolawole, and Joseph E. Mbaiwa. "Institutions and water governance in the Okavango Delta, Botswana." Chinese Journal of Population Resources and Environment 17, no. 1 (2018): 67–78. http://dx.doi.org/10.1080/10042857.2018.1544752.

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7

Gondo, Reniko, Oluwatoyin Dare Kolawole, Joseph E. Mbaiwa, and Moseki R. Motsholapheko. "Stakeholders’ perceptions on water resources management in the Okavango Delta, Botswana." Transactions of the Royal Society of South Africa 74, no. 3 (2019): 283–96. http://dx.doi.org/10.1080/0035919x.2019.1658655.

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8

Gondo, Reniko, and Oluwatoyin D. Kolawole. "Sustainable Water Resources Management: Issues and Principles of Water Governance in the Okavango Delta, Botswana." International Journal of Rural Management 15, no. 2 (2019): 198–217. http://dx.doi.org/10.1177/0973005219865369.

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In the recent times, there is an increased awareness about the importance of water management as population growth, new technologies, increased food consumption, land use and economic activities, among others, continue to exacerbate competition among water users in their bid to access natural resources. Thus, water governance encompasses the allocation and management of aquatic resources within the context of a multilayered, competing demand for water resources. Employing a critical review of relevant literature and guided by the legal pluralism conceptual framework and situated within the Dub

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9

Wolski, P., and H. H. G. Savenije. "Dynamics of floodplain-island groundwater flow in the Okavango Delta, Botswana." Journal of Hydrology 320, no. 3-4 (2006): 283–301. http://dx.doi.org/10.1016/j.jhydrol.2005.07.027.

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10

Mogobe, Oarabile, Edwin Mosimanyana, Wellington R. L. Masamba, and Ketlhatlogile Mosepele. "Monitoring water quality of the Upper Okavango Delta." Biodiversity & Ecology 6 (April 14, 2018): 106–11. http://dx.doi.org/10.7809/b-e.00311.

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11

Gondo, Reniko, Oluwatoyin Dare Kolawole, Joseph E. Mbaiwa, and Moseki R. Motsholapheko. "Demographic and socio-economic factors influencing water governance in the Okavango Delta, Botswana." Scientific African 10 (November 2020): e00602. http://dx.doi.org/10.1016/j.sciaf.2020.e00602.

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12

Ramberg, Lars, Piotr Wolski, and Martin Krah. "Water balance and infiltration in a seasonal floodplain in the Okavango Delta, Botswana." Wetlands 26, no. 3 (2006): 677–90. http://dx.doi.org/10.1672/0277-5212(2006)26[677:wbaiia]2.0.co;2.

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13

Bartsch, Perry W., Thea M. Edwards, and John W. Brock. "Prevalence of Eight Phthalate Monoesters in Water from the Okavango Delta, Northern Botswana." Bulletin of Environmental Contamination and Toxicology 103, no. 2 (2019): 274–79. http://dx.doi.org/10.1007/s00128-019-02630-0.

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14

Gieske, A. "Modelling outflow from the Jao/Boro River system in the Okavango Delta, Botswana." Journal of Hydrology 193, no. 1-4 (1997): 214–39. http://dx.doi.org/10.1016/s0022-1694(96)03147-2.

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15

Gumbricht, T., P. Wolski, P. Frost, and T. S. McCarthy. "Forecasting the spatial extent of the annual flood in the Okavango delta, Botswana." Journal of Hydrology 290, no. 3-4 (2004): 178–91. http://dx.doi.org/10.1016/j.jhydrol.2003.11.010.

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16

Motsholapheko, Moseki R., Cornelis Vanderpost, and Donald L. Kgathi. "Rural livelihoods and household adaptation to desiccation in the Okavango Delta, Botswana." Journal of Water and Climate Change 3, no. 4 (2012): 300–316. http://dx.doi.org/10.2166/wcc.2012.048.

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Desiccation of river channels, resulting from low inflows, is among the major shocks affecting household livelihoods in the Okavango Delta, Botswana. Household coping and adaptive strategies against this shock are believed to be inadequate owing to changes in policy, land use and environmental conditions. This paper aims to improve knowledge on household capacity to adapt to desiccation in the Okavango Delta. It identifies and assesses the impacts of desiccation on rural livelihoods, the household strategies, and the impacts of institutional changes on household responses. Informed by the sust

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17

Milzow, Christian, Lesego Kgotlhang, Peter Bauer-Gottwein, Philipp Meier, and Wolfgang Kinzelbach. "Regional review: the hydrology of the Okavango Delta, Botswana—processes, data and modelling." Hydrogeology Journal 17, no. 6 (2009): 1297–328. http://dx.doi.org/10.1007/s10040-009-0436-0.

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18

SAWULA, G. "On-site preconcentration and trace metal ions determination in the Okavango Delta water system, Botswana." Talanta 64, no. 1 (2004): 80–86. http://dx.doi.org/10.1016/j.talanta.2003.11.048.

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19

Tsheboeng, Gaolathe, Mike Murray-Hudson, and Keotshephile Kashe. "Response of riparian plant communities to distance from surface water in the Okavango Delta, Botswana." African Journal of Ecology 55, no. 4 (2016): 402–10. http://dx.doi.org/10.1111/aje.12364.

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20

Huntsman-Mapila, P., T. Mapila, M. Letshwenyo, P. Wolski, and C. Hemond. "Characterization of arsenic occurrence in the water and sediments of the Okavango Delta, NW Botswana." Applied Geochemistry 21, no. 8 (2006): 1376–91. http://dx.doi.org/10.1016/j.apgeochem.2006.05.003.

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21

Ringrose, Susan. "Characterisation of riparian woodlands and their potential water loss in the distal Okavango Delta, Botswana." Applied Geography 23, no. 4 (2003): 281–302. http://dx.doi.org/10.1016/j.apgeog.2003.08.006.

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22

Kurugundla, C. N., B. Mathangwane, S. Sakuringwa, and G. Katorah. "Alien Invasive Aquatic Plant Species in Botswana: Historical Perspective and Management." Open Plant Science Journal 9, no. 1 (2016): 1–40. http://dx.doi.org/10.2174/1874294701609010001.

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Aquatic ecosystems in Botswana have been under threat by the aquatic alien invasive plant species viz., salvinia Salvinia molesta Mitchell, water lettuce Pistia stratiotes L., and water hyacinth Eichhornia crassipes (Mart.) Solms-Laub. While salvinia has been termed the major threat to the Botswana wetlands, water lettuce and water hyacinth are considered to be of minor importance. This review presents the species biology, distribution, historical spread, negative impacts, control achieved right from their discovery in the country by referring to their control and management in the world. Havi

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23

Bauer, Peter, George Thabeng, Fritz Stauffer, and Wolfgang Kinzelbach. "Estimation of the evapotranspiration rate from diurnal groundwater level fluctuations in the Okavango Delta, Botswana." Journal of Hydrology 288, no. 3-4 (2004): 344–55. http://dx.doi.org/10.1016/j.jhydrol.2003.10.011.

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24

Wolski, P., H. H. G. Savenije, M. Murray-Hudson, and T. Gumbricht. "Modelling of the flooding in the Okavango Delta, Botswana, using a hybrid reservoir-GIS model." Journal of Hydrology 331, no. 1-2 (2006): 58–72. http://dx.doi.org/10.1016/j.jhydrol.2006.04.040.

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25

Mackay, Anson W., Thomas Davidson, Piotr Wolski, et al. "Spatial and Seasonal Variability in Surface Water Chemistry in the Okavango Delta, Botswana: A Multivariate Approach." Wetlands 31, no. 5 (2011): 815–29. http://dx.doi.org/10.1007/s13157-011-0196-1.

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26

Gondwe, M. J., C. Helfter, M. Murray-Hudson, et al. "Methane flux measurements along a floodplain soil moisture gradient in the Okavango Delta, Botswana." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 379, no. 2210 (2021): 20200448. http://dx.doi.org/10.1098/rsta.2020.0448.

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Data-poor tropical wetlands constitute an important source of atmospheric CH 4 in the world. We studied CH 4 fluxes using closed chambers along a soil moisture gradient in a tropical seasonal swamp in the Okavango Delta, Botswana, the sixth largest tropical wetland in the world. The objective of the study was to assess net CH 4 fluxes and controlling environmental factors in the Delta's seasonal floodplains. Net CH 4 emissions from seasonal floodplains in the wetland were estimated at 0.072 ± 0.016 Tg a −1 . Microbial CH 4 oxidation of approximately 2.817 × 10 −3 ± 0.307 × 10 −3 Tg a −1 in adj

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27

Podgorski, Joel E., Wolfgang K. H. Kinzelbach, and Lesego Kgotlhang. "Using helicopter TEM to delineate fresh water and salt water zones in the aquifer beneath the Okavango Delta, Botswana." Advances in Water Resources 107 (September 2017): 265–79. http://dx.doi.org/10.1016/j.advwatres.2017.06.021.

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28

Akondi, Rawlings N., Eliot A. Atekwana, and Loago Molwalefhe. "Origin and chemical and isotopic evolution of dissolved inorganic carbon (DIC) in groundwater of the Okavango Delta, Botswana." Hydrological Sciences Journal 64, no. 1 (2019): 105–20. http://dx.doi.org/10.1080/02626667.2018.1560447.

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29

McCarthy, T. S. "Groundwater in the wetlands of the Okavango Delta, Botswana, and its contribution to the structure and function of the ecosystem." Journal of Hydrology 320, no. 3-4 (2006): 264–82. http://dx.doi.org/10.1016/j.jhydrol.2005.07.045.

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30

Spenceley, Anna, and Susan Snyman. "Can a wildlife tourism company influence conservation and the development of tourism in a specific destination?" Tourism and Hospitality Research 17, no. 1 (2016): 52–67. http://dx.doi.org/10.1177/1467358416634158.

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The evolution of tourism destinations is influenced by a range of factors including the policy and planning framework, the role of destination management organisations, and integration of tourism into the local and national economy. The aim of this paper is to describe how the private sector can influence destination development, by considering a luxury safari lodge (Mombo Camp) and its holding company (Okavango Wilderness Safaris) within the Okavango Delta of Botswana. Through a series of stakeholder interviews and literature review, the research found that Mombo had influenced the destinatio

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31

Wolski, P., and M. Murray-Hudson. "Flooding dynamics in a large low-gradient alluvial fan, the Okavango Delta, Botswana, from analysis and interpretation of a 30-year hydrometric record." Hydrology and Earth System Sciences Discussions 2, no. 5 (2005): 1865–92. http://dx.doi.org/10.5194/hessd-2-1865-2005.

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Abstract. The Okavango Delta is a flood-pulsed wetland, the resources of which support a large tourism industry and subsistence of the local population. In order to obtain an insight into the influence of various environmental factors on flood propagation and distribution in this system, an analysis was undertaken of a 30-year record of hydrometric data (discharges and water levels) from one of the Delta distributaries. The analysis revealed that water levels and discharges at any given channel site in the analysed distributary are influenced by a complex interplay of flood wave and local rain

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32

Gondo, Reniko, Oluwatoyin D. Kolawole, and Joseph E. Mbaiwa. "Dissonance in customary and statutory water management institutions: issues of cultural diversity in the management of water resources in the Okavango Delta, Botswana." Environment, Development and Sustainability 21, no. 3 (2018): 1091–109. http://dx.doi.org/10.1007/s10668-018-0093-3.

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33

Mladenov, Natalie, Piotr Wolski, Ganga M. Hettiarachchi, et al. "Abiotic and biotic factors influencing the mobility of arsenic in groundwater of a through-flow island in the Okavango Delta, Botswana." Journal of Hydrology 518 (October 2014): 326–41. http://dx.doi.org/10.1016/j.jhydrol.2013.09.026.

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34

Murray-Hudson, Michael, Piotr Wolski, and Susan Ringrose. "Scenarios of the impact of local and upstream changes in climate and water use on hydro-ecology in the Okavango Delta, Botswana." Journal of Hydrology 331, no. 1-2 (2006): 73–84. http://dx.doi.org/10.1016/j.jhydrol.2006.04.041.

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35

Wolski, P., and M. Murray-Hudson. "Flooding dynamics in a large low-gradient alluvial fan, the Okavango Delta, Botswana, from analysis and interpretation of a 30-year hydrometric record." Hydrology and Earth System Sciences 10, no. 1 (2006): 127–37. http://dx.doi.org/10.5194/hess-10-127-2006.

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Abstract. The Okavango Delta is a flood-pulsed wetland, which supports a large tourism industry and the subsistence of the local population through the provision of ecosystem services. In order to obtain insight into the influence of various environmental factors on flood propagation and distribution in this system, an analysis was undertaken of a 30-year record of hydrometric data (discharges and water levels) from one of the Delta distributaries. The analysis revealed that water levels and discharges at any given channel site in this distributary are influenced by a complex interplay of floo

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36

Masamba, Wellington R. L., and Dominic Mazvimavi. "Impact on water quality of land uses along Thamalakane-Boteti River: An outlet of the Okavango Delta." Physics and Chemistry of the Earth, Parts A/B/C 33, no. 8-13 (2008): 687–94. http://dx.doi.org/10.1016/j.pce.2008.06.035.

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37

LeFlore, Eric G., Todd K. Fuller, Mathata Tomeletso, Tiro C. Dimbindo, and Andrew B. Stein. "Human dimensions of human–lion conflict: a pre- and post-assessment of a lion conservation programme in the Okavango Delta, Botswana." Environmental Conservation 47, no. 3 (2020): 182–89. http://dx.doi.org/10.1017/s0376892920000120.

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SummaryHumans are contributing to large carnivore declines around the globe, and conservation interventions should focus on increasing local stakeholder tolerance of carnivores and be informed by both biological and social considerations. In the Okavango Delta (Botswana), we tested new conservation strategies alongside a pre-existing government compensation programme. The new strategies included the construction of predator-proof livestock enclosures, the establishment of an early warning system linked to GPS satellite lion collars, depredation event investigations and educational programmes.

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38

Fryirs, Kirstie A., Timothy J. Ralph, Zacchary T. Larkin, et al. "A nested hierarchical perspective to enhance interpretations and communication in fluvial geomorphology for use in water resources management: Lessons from the Okavango Delta, Botswana." Geographical Journal 184, no. 2 (2018): 192–207. http://dx.doi.org/10.1111/geoj.12250.

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39

Mantlana, K. B., A. Arneth, E. M. Veenendaal, et al. "Seasonal and inter-annual photosynthetic response of representative C4 species to soil water content and leaf nitrogen concentration across a tropical seasonal floodplain." Journal of Tropical Ecology 24, no. 2 (2008): 201–13. http://dx.doi.org/10.1017/s0266467408004859.

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AbstractWe examined the seasonal and inter-annual variation of leaf-level photosynthetic characteristics of three C4 perennial species, Cyperus articulatus, Panicum repens and Imperata cylindrica, and their response to environmental variables, to determine comparative physiological responses of plants representing particular microhabitats within a seasonal tropical floodplain in the Okavango River Delta, Botswana. Five measurement campaigns were carried out over a period of 2 y which covered two early rainy seasons, two late rainy seasons and one dry season. For all three species, light-satura

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40

Mmualefe, Lesego C., Nelson Torto, Philippa Huntsman-Mapila, and Bontle Mbongwe. "Supercritical fluid extraction of pesticides in sediment from the Okavango Delta, Botswana, and determination by gas chromatography with electron capture detection (GC-ECD) and mass spectrometry (GC-MS)." Water SA 34, no. 3 (2018): 405. http://dx.doi.org/10.4314/wsa.v34i3.180635.

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41

Steward, D. R., W. J. de Lange, X. Yang, S. L. Vasak, and T. N. Olsthoorn. "Groundwater ecohydrology: GIScience tools to forecast change and sustainability of global ecosystems, studies in Africa, Europe and North America." Hydrology and Earth System Sciences Discussions 6, no. 2 (2009): 2795–844. http://dx.doi.org/10.5194/hessd-6-2795-2009.

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Abstract. This study examines the interface between groundwater hydrology and ecology, and addresses a scientific grand challenge to develop a comprehensive, systematic understanding of continental water dynamics by linking the hydrosphere and biosphere. There exists a current lack of data interoperability between groundwater modeling tools due to differences in numerical techniques – Analytic Element Method (AEM), Finite Difference Method (FDM), and Finite Element Method (FEM) – which lend themselves well to either vector or raster data, and legacy input/output file formats that are not well

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42

Huchzermeyer, Karl D. A., and Benjamin C. W. Van der Waal. "Epizootic ulcerative syndrome: Exotic fish disease threatens Africa’s aquatic ecosystems." Journal of the South African Veterinary Association 83, no. 1 (2012). http://dx.doi.org/10.4102/jsava.v83i1.204.

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In late 2006 an unusual ulcerative condition in wild fish was reported for the first time in Africa from the Chobe and upper Zambezi Rivers in Botswana and Namibia. Concern increased with subsistence fishermen reporting large numbers of ulcerated fish in their catches. In April 2007 the condition was confirmed as an outbreak of epizootic ulcerative syndrome (EUS). The causative agent, Aphanomyces invadans, is a pathogenic water mould of fish that shows little host specificity. Ulcers follow infection of tissues by oomycete zoospores, resulting in a granulomatous inflammation associated with in

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43

Mmualefe, LC, and N. Torto. "Water quality in the Okavango Delta." Water SA 37, no. 3 (2011). http://dx.doi.org/10.4314/wsa.v37i3.68492.

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44

Maina, Irene W., Morlu G. F. Stevens, and Bareki S. Batlokwa. "Remediation of Boating and Jetty Pollutants from the Okavango Delta Surface Water Employing Valorized Tilapia ruweti Waste Material." Asian Journal of Applied Chemistry Research, January 16, 2020, 1–12. http://dx.doi.org/10.9734/ajacr/2019/v4i330115.

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Aims: To employ valorized waste materials from Tilapia ruweti scales for removal of heavy metals from areas with major boating activities and high numbers of jetties at the Okavango delta, Botswana. Study Design: Biowaste materials were Identified, valorized and then optimized for adsorption and removal of boating and jetty pollutants from profiled Okavango Delta surface water samples. Place and Duration of Study: Okavango Delta, Maun and Botswana International University of Science and Technology, Palapye, Botswana between March 2017 and September 2018. Methodology: Tilapia

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45

Bauer, Peter, Thomas Gumbricht, and Wolfgang Kinzelbach. "A regional coupled surface water/groundwater model of the Okavango Delta, Botswana." Water Resources Research 42, no. 4 (2006). http://dx.doi.org/10.1029/2005wr004234.

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46

Dauteuil, O., M. Jolivet, A. Dia, et al. "Trace Metal Enrichments in Water of the Okavango Delta (Botswana): Hydrological Consequences." Geochemistry, Geophysics, Geosystems 22, no. 5 (2021). http://dx.doi.org/10.1029/2021gc009856.

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47

"Modeling Dryness Severity Using Artificial Neural Network at the Okavango Delta, Botswana." Issue 3 18, no. 3 (2016): 463–81. http://dx.doi.org/10.30955/gnj.001731.

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<div> <p>Water balance studies in the Okavango Delta indicate that more than 90% of inflow into the Delta is lost through evaporation. This coupled with high climatic variability threatens the ecohydrology of the Delta. Trends indicate decreasing rainfall amounts and increasing temperature at the area of the Delta. The main aim of this study was therefore to investigate long term trends and variability in rain onset, cessation, number of rainy days and their impact on the dryness index at the Delta. The impact of the above variables is expressed through the standardized preci

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48

"A Hybrid Stochastic-ANN Approach for Flow Partitioning in the Okavango Delta of Botswana." Issue 1 16, no. 1 (2013): 68–79. http://dx.doi.org/10.30955/gnj.001206.

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<p>Since a spectrum of hydrological and geomorphological conditions produce flood pulse environment in a riverine or a deltaic system, it is essential to have the knowledge on spatial and temporal distributions of river flow and dependent processes for environmental flow requirements, ecosystem maintenance, water resources management, and hydrological forecasting among others. Such systems being complex as the exchange of flows between the main channel and the flood plains are not well understood, flow partitioning dynamics between the various channels on large water bodies are often dif

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49

Gondo, Reniko, and Oluwatoyin D. Kolawole. "Institutional factors engendering dissonance between customary and statutory institutions in water access in the Okavango Delta, Botswana." Sustainable Water Resources Management 6, no. 6 (2020). http://dx.doi.org/10.1007/s40899-020-00458-9.

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50

Tsheboeng, Gaolathe, Mphaphi Bonyongo, and Mike Murray-Hudson. "Environmental factors that influence species diversity of floodplain plant communities in different flooding phases in the Okavango Delta, Botswana." Bothalia, African Biodiversity & Conservation 50, Volume 50 No. 1 (2020). http://dx.doi.org/10.38201/btha.abc.v50.i1.3.

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Background and objectives: Species composition and distribution in seasonal floodplain plant communities are influenced by variation in flooding. However, the influence of intra-flooding variation phases on the diversity of seasonal floodplain plant communities has not been studied in the Okavango Delta. The objective of this study was to investigate environmental factors that influence species composition and distribution of seasonal floodplain communities before and after flooding. It was hypothesised that environmental factors that influence the species composition and distribution in seaso

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