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Browsing by Author "Pienaar, Harrison H"

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Assessing heavy metal pollution hazard in sediments of Lake Mariout, Egypt

Author: Abu El-Magd, SA ; Taha, TH ; Pienaar, Harrison H ; Breil, P ; Amer, RA ; Namour, PH Date: Apr 2021 The Cd, Cr, Cu, Ni, and Pb concentrations in the sediments of Lake Mariout were measured and estimated by statistical approaches using the contamination factor (CF), pollution load index (PLI), geo-accumulation index (Igeo), Nemerow index ... Read more
Assessing water resources availability in headwater sub-catchments of Pungwe River Basin in a changing climate

Author: Gumbo, AD ; Kapangaziwiri, Evison ; Chikoore, H ; Pienaar, Harrison H Date: Jun 2021 Study Region: The Pungwe River Basin, which is predominantly rural, is a transboundary river shared between Zimbabwe and Mozambique. The riparian communities along the river largely depend on the availability of streamflow for their livelihoods ... Read more
Assessing water use by Prosopis invasions and Vachellia karroo trees: Implications for groundwater recovery following alien plant removal in an arid catchment in South Africa

Author: Dzikiti, Sebinasi ; Ntshidi, Zanele ; Le Maitre, David C ; Bugan, Richard DH ; Mazvimavi, D ; Schachtschneider, K ; Jovanovic, Nebojsa ; Pienaar, Harrison H Date: Aug 2017 Prosopis spp., (or Mesquite), is a desert adapted woody weed which has invaded large parts of arid and semi-arid regions. It has a characteristic deep tap root, and forms dense impenetrable thickets along river banks, flood plains, and seasonal ... Read more
Comparison of two remote sensing models for estimating evapotranspiration: algorithm evaluation and application in seasonally arid ecosystems in South Africa

Author: Dzikiti, Sebinasi ; Jovanovic, Nebojsa ; Bugan, Richard DH ; Ramoelo, Abel ; Majozi, Nobuhle P ; Nickless, Alecia ; Cho, Moses A ; Le Maitre, David C ; Ntshidi, Zanele ; Pienaar, Harrison H Date: Sep 2019 Remote sensing tools are becoming increasingly important for providing spatial information on water use by different ecosystems. Despite significant advances in remote sensing based evapotranspiration (ET) models in recent years, important ... Read more
Contrasting water use patterns of two drought adapted native fruit tree species growing on nutrient poor sandy soils in northern KwaZulu-Natal

Author: Dzikiti, Sebinasi ; Ntuli, NR ; Nkosi, NN ; Ntshidi, Zanele ; Ncapai, L ; Gush, MB ; Mostert, THC ; Du Preez, R ; Mobea, NT ; Mpandeli, S ; Pienaar, Harrison H Date: Jul 2022 Natural forests are an important source of livelihood for various communities. Yet economically important fruit tree species endemic to sub Saharan Africa e.g. Sclerocaryea birrea (Marula) are critically endangered due to over-exploitation ... Read more
Estimating the water requirements of high yielding and young apple orchards in the winter rainfall areas of South Africa using a dual source evapotranspiration model

Author: Dzikiti, Sebinasi ; Volschenk, T ; Midgley, SJ ; Lötze, E ; Taylor, NJ ; Gush, Mark B ; Ntshidi, Zanele ; Zirebwa, SF ; Schmeisser, M ; Jarmain, C ; Steyn, WJ ; Pienaar, Harrison H Date: Jun 2018 Exceptionally high yielding (> 100 t ha-(sup1)) apple orchards (Malus domestica Borkh.) are becoming common in South Africa and elsewhere in the world. However, no accurate quantitative information currently exists on the water requirements ... Read more
Field quantification of the water footprint of an apple orchard, and extrapolation to watershed scale within a winter rainfall Mediterranean climate zone

Author: Gush, Mark B ; Dzikiti, Sebinasi ; Van der Laan, M ; Steyn, Maronel ; Manamathela, S ; Pienaar, Harrison H Date: Jun 2019 Field scale quantifications of the water footprints (WF) of crops, based on actual measurements, provide valuable and detailed information for on-farm water use management. However, watershed-based WF assessments are more appropriate for ... Read more
Implementation of groundwater protection measures, particularly resource-directed measures in South Africa: a review paper

Author: Pienaar, Harrison H ; Xu, Y ; Braune, E ; Cao, J ; Dzikiti, Sebinasi ; Jovanovic, NZ Date: Aug 2021 This review paper on groundwater protection measures in South Africa focuses on the actual implementation of groundwater protection measures, in particular, the resource-directed measures (RDM) as described in Chapter 3 of the National Water ... Read more
In vivo assessment of the hepatotoxicity of a new Nostoc isolate from the Nile River: Nostoc sp. strain NRI

Author: Abu-Serie, MM ; Nasser, N ; El-Wahab, AA ; Shehawy, R ; Pienaar, Harrison H ; Baddour, N ; Amer, R Date: Jan 2018 Nostoc sp. is one of the most widely distributed cyanobacterial genera that produce potentially protein phosphatase (PP) inhibitor; microcystins (MCs). MCs have posed a worldwide concern due to predominant hepatotoxicity to human health. We ... Read more
Model of forensic hydrography

Author: Kasum, J ; Pilic, M ; Jovanovic, Nebojsa ; Pienaar, Harrison H Date: Oct 2019 Forensic science plays a vital role in the work of judicial bodies. The contents, knowledge, and specialized expertise permit the identification of facts essential to law enforcement and judicial disputes. Hydrography is an applied science ... Read more
Securing water quality and quantity: Research and development perspective

Author: Pienaar, Harrison H Date: Oct 2012 In this talk the author focuses on the role of science in the context of ensuring current and future water security. Read more
Validation and verification of lawful water use in South Africa: An overview of the process in the KwaZulu-Natal Province

Author: Kapangaziwiri, Evison ; Mwenge Kahinda, Jean-Marc ; Dzikiti, Sebinasi ; Ramoelo, Abel ; Cho, Moses A ; Mathieu, Renaud SA ; Naidoo, Mogesh ; Seetal, Ashwin R ; Pienaar, Harrison H Date: Oct 2016 South Africa is a water-stressed country which has, over the years, strived to adopt a rational, just and equitable way to manage this limited resource. The National Water Act (Act No.36 of 1998) (NWA) provides the legal framework to achieve ... Read more

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Browsing by Author "Pienaar, Harrison H"

Browsing by Author "Pienaar, Harrison H"

Browse

All of ResearchSpace

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