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Journal articles on the topic 'River sediments – South Africa – Durban'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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1

Singh, Gulshan, Ayanda Sithebe, Abimbola M. Enitan, Sheena Kumari, Faizal Bux, and Thor Axel Stenström. "Comparison of droplet digital PCR and quantitative PCR for the detection of Salmonella and its application for river sediments." Journal of Water and Health 15, no. 4 (2017): 505–8. http://dx.doi.org/10.2166/wh.2017.259.

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Despite advances in microbial detection that quantitative polymerase chain reaction (qPCR) has led to, complex environmental samples, such as sediments, remain a challenge due to presence of PCR inhibitors. Aquatic sediments accumulate particle-bound microbial contaminants and thereby reflect a cumulative microbial load over time. The relatively new droplet digital PCR (ddPCR) has emerged as a direct quantitative method, highly tolerant to PCR inhibitors and relinquishing the necessity for calibration/standard curves. Information is virtually absent where ddPCR has been applied to detect patho

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Micallef, Aaron, Aggeliki Georgiopoulou, Andrew Green, and Vittorio Maselli. "Impact of sea-level fluctuations on the sedimentation patterns of the SE African margin: implications for slope instability." Geological Society, London, Special Publications 500, no. 1 (2019): 267–76. http://dx.doi.org/10.1144/sp500-2019-172.

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AbstractThe sheared-passive margin offshore Durban (South Africa) is characterized by a narrow continental shelf and steep slope hosting numerous submarine canyons. Supply of sediment to the margin is predominantly terrigenous, dominated by discharge from several short but fast-flowing rivers. International Ocean Discovery Program Expedition 361 provides a unique opportunity to investigate the role of sea-level fluctuations on the sedimentation patterns and slope instability along the South African margin. We analysed >300 sediment samples and downcore variations in P-wave, magnetic suscept

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3

Lin, Johnson, and Atheesha Singh. "Detection of human enteric viruses in Umgeni River, Durban, South Africa." Journal of Water and Health 13, no. 4 (2015): 1098–112. http://dx.doi.org/10.2166/wh.2015.238.

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The prevalence of adenovirus (AdV), rotaviruses (RV) and enteroviruses (EV) in Umgeni River waters of Durban, South Africa was assessed qualitatively and quantitatively during April 2011 to January 2012 using polymerase chain reaction (PCR)/reverse transcription-polymerase chain reaction (RT-PCR), nested PCR and quantitative PCR (qPCR), as well as nested integrated cell culture PCR (nested ICC-PCR). The phylogenetic analysis of the adenovirus and enterovirus amplicons was also performed. The nested PCR results effectively detected the presence of AdV and EV in all water samples. The results of

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4

Hyde, K. D., T. K. Goh, and T. D. Steinke. "Fungi on submerged wood in the Palmiet River, Durban, South Africa." South African Journal of Botany 64, no. 3 (1998): 151–62. http://dx.doi.org/10.1016/s0254-6299(15)30860-7.

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5

Marie, Veronna, and Johnson Lin. "Microbial indicators and environmental relationships in the Umhlangane River, Durban, South Africa." Open Life Sciences 13, no. 1 (2018): 385–95. http://dx.doi.org/10.1515/biol-2018-0047.

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AbstractThe use of rivers for recreational and domestic practices makes it imperative to scrutinize the water quality circulating within surrounding communities. The complexity of biological, physical and chemical constituents in water is constantly evolving. This study evaluated various microbial and physico-chemical parameters in a polluted river system over a 12-month period. Apart from an increase in chemical pollutants, elevated levels of E. coli, total (TC) and faecal (FC) coliforms, and Shigella species could be attributed to faecal contamination entering the catchment. Canonical corres

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Vogt, T., R. Pieters, and BK Newman. "PAHs, OCPs and PCBs in sediments from three catchments in Durban, South Africa." African Journal of Aquatic Science 43, no. 1 (2018): 35–49. http://dx.doi.org/10.2989/16085914.2018.1445616.

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7

Olaniran, Ademola O., Kovashnee Naicker, and Balakrishna Pillay. "Antibiotic resistance profiles of Escherichia coli isolates from river sources in Durban, South Africa." World Journal of Microbiology and Biotechnology 25, no. 10 (2009): 1743–49. http://dx.doi.org/10.1007/s11274-009-0071-x.

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8

Padayachee, Ashlyn L., Şerban Procheş, and John R. U. Wilson. "Prioritising potential incursions for contingency planning: pathways, species, and sites in Durban (eThekwini), South Africa as an example." NeoBiota 47 (June 19, 2019): 1–21. http://dx.doi.org/10.3897/neobiota.47.31959.

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Increased trade and travel have resulted in an increasing rate of introduction of biological organisms to new regions. Urban environments, such as cities, are hubs for human activities facilitating the introduction of alien species. Additionally, cities are susceptible to invading organisms as a result of the highly altered and transformed nature of these environments. Despite best efforts at prevention, new incursions of alien species will occur; therefore, prioritising incursion response efforts is essential. This study explores these ideas to identify priorities for strategic prevention pla

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9

Pheiffer, W., R. Pieters, JC van Dyk, and NJ Smit. "Metal contamination of sediments and fish from the Vaal River, South Africa." African Journal of Aquatic Science 39, no. 1 (2014): 117–21. http://dx.doi.org/10.2989/16085914.2013.854732.

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10

Olukunle, Olubiyi, Jonathan Okonkwo, Kebede Kefeni, and Mlindelwa Lupankwa. "Concentrations of Polybrominated Diphenyl Ethers in Sediments from Jukskei River, Gauteng, South Africa." Bulletin of Environmental Contamination and Toxicology 88, no. 3 (2011): 461–66. http://dx.doi.org/10.1007/s00128-011-0481-y.

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11

Kgabi, Dipuo P., and Abayneh A. Ambushe. "Speciation and bioavailability of mercury in sediments from Mokolo River, Limpopo Province, South Africa." Journal of Environmental Science and Health, Part A 56, no. 9 (2021): 973–83. http://dx.doi.org/10.1080/10934529.2021.1949918.

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12

Marie, Veronna, and Johnson Lin. "Viruses in the environment – presence and diversity of bacteriophage and enteric virus populations in the Umhlangane River, Durban, South Africa." Journal of Water and Health 15, no. 6 (2017): 966–81. http://dx.doi.org/10.2166/wh.2017.066.

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Abstract Due to the continued persistence of waterborne viral-associated infections, the presence of enteric viruses is a concern. Notwithstanding the health implications, viral diversity and abundance is an indicator of water quality declination in the environment. The aim of this study was to evaluate the presence of viruses (bacteriophage and enteric viruses) in a highly polluted, anthropogenic-influenced river system over a 6-month period at five sampling points. Cytopathic-based tissue culture assays revealed that the isolated viruses were infectious when tested on Hep-G2, HEK293 and Vero

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Chokwe, Tlou B., Jonathan O. Okonkwo, and Mutshinyalo S. Nwamadi. "Occurrence and distribution of tetrabromobisphenol A and its derivative in river sediments from Vaal River Catchment, South Africa." Emerging Contaminants 3, no. 3 (2017): 121–26. http://dx.doi.org/10.1016/j.emcon.2017.11.001.

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14

Zhao, B. "Environmental assessment of Durban Navigation Colliery discard dumps in the Klip River coalfield, Kwazulu-Natal Province of South Africa." Environmental Earth Sciences 67, no. 3 (2012): 743–57. http://dx.doi.org/10.1007/s12665-012-1533-2.

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15

Addo-Bediako, Abraham, and Karabo Malakane. "Preliminary Assessment of Chemical Elements in Sediments and Larvae of Gomphidae (Odonata) from the Blyde River of the Olifants River System, South Africa." International Journal of Environmental Research and Public Health 17, no. 21 (2020): 8135. http://dx.doi.org/10.3390/ijerph17218135.

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Benthic macroinvertebrates and sediments can act as good indicators of environmental quality. The aim of this study was to assess the accumulation of chemical elements in the Gomphidae (Odonata) collected in the Blyde River. Seven sites were sampled for river sediments assessment and five sites for larvae (naiads) of Gomphidae bioaccumulation analysis. The tissue samples were analysed using inductively coupled plasma optical emission spectrometry (ICP-OES). The results showed high levels of all of the tested elements except Cd in the sediment. The mean concentrations of As, Cu and Cr exceeded

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Edokpayi, Joshua N., John O. Odiyo, Elizabeth O. Popoola, and Titus A. M. Msagati. "Evaluation of temporary seasonal variation of heavy metals and their potential ecological risk in Nzhelele River, South Africa." Open Chemistry 15, no. 1 (2017): 272–82. http://dx.doi.org/10.1515/chem-2017-0033.

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AbstractSurface water is often used as alternative source of drinking water in many regions of the world where the potable water supply is erratic or not present. The concentration of heavy metals was assessed using an Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES). The impact of temporary seasonal variation on the contamination level was also assessed. Contamination factor (CF) and Hakanson’s potential ecological risk (Er and RI) indices were used to evaluate the toxicity levels of the metals in the sediments of the river. Higher concentrations of Fe, Mn, Pb, Cu and Zn wer

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Adeniji, A. O., O. O. Okoh, and A. I. Okoh. "Petroleum Hydrocarbon Fingerprints of Water and Sediment Samples of Buffalo River Estuary in the Eastern Cape Province, South Africa." Journal of Analytical Methods in Chemistry 2017 (2017): 1–13. http://dx.doi.org/10.1155/2017/2629365.

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Petroleum hydrocarbon status of the Buffalo River Estuary in East London, South Africa, was evaluated from January to May, 2016. Surface water and sediment samples were collected from five points in the estuary and extracted using standard methods. The extracts were subsequently analyzed by gas chromatography-flame ionization detection. Results showed that total petroleum hydrocarbon (TPH) varied from 7.65 to 477 μg/L in the water and 12.59 to 1,100 mg/kg in the sediments, with mean values of 146.50 ± 27.96 μg/L and 209.81 ± 63.82 mg/kg, respectively. Concentrations of TPH in the sediments cor

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18

Amos Sibeko, Pheko, Devrani Naicker, Phumlane Selby Mdluli, and Lawrence Mzukisi Madikizela. "Naproxen, ibuprofen, and diclofenac residues in river water, sediments and Eichhornia crassipes of Mbokodweni river in South Africa: An initial screening." Environmental Forensics 20, no. 2 (2019): 129–38. http://dx.doi.org/10.1080/15275922.2019.1597780.

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19

Matabane, Dithobolong L., Taddese W. Godeto, Richard M. Mampa, and Abayneh A. Ambushe. "Sequential Extraction and Risk Assessment of Potentially Toxic Elements in River Sediments." Minerals 11, no. 8 (2021): 874. http://dx.doi.org/10.3390/min11080874.

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In this study, the sequential extraction method was applied to extract selected potentially toxic elements (PTEs) (Cd, Cr, Cu, Fe, Ni, Pb and Zn) in river sediments collected from the Blood River situated in Seshego area, Limpopo Province, South Africa. The study aimed to assess a possible trend of mobilisation of these elements from sediment to water. The accuracy of the sequential extraction method was confirmed by analysing sediment-certified reference material, and quantitative percentage recoveries ranging from 86 to 119%, 81 to 111% and 77 to 119% were achieved for exchangeable, reducibl

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Snow, G. C., and J. B. Adams. "Relating microalgal spatial patterns to flow, mouth and nutrient status in the temporarily open/closed Mngazi estuary, South Africa." Marine and Freshwater Research 58, no. 11 (2007): 1032. http://dx.doi.org/10.1071/mf07016.

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The Mngazi estuary, a near pristine and wave-dominated estuary located on the subtropical east coast of South Africa, requires careful management to ensure that land use does not alter its ecological function. The present study investigated the quality and quantity of water in the estuary and related these to the microalgae. There was no evidence of a persistent elevated phytoplankton biomass in the region of the estuary where river water mixed with brackish estuarine water, even during periods when the estuary mouth was open. Nutrients that determined the microalgal distribution were likely t

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Almécija, Clara, Antonio Cobelo-García, Victor Wepener, and Ricardo Prego. "Platinum group elements in stream sediments of mining zones: The Hex River (Bushveld Igneous Complex, South Africa)." Journal of African Earth Sciences 129 (May 2017): 934–43. http://dx.doi.org/10.1016/j.jafrearsci.2017.02.002.

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22

Olukunle, O. I., I. V. Sibiya, O. J. Okonkwo, and A. O. Odusanya. "Influence of physicochemical and chemical parameters on polybrominated diphenyl ethers in selected landfill leachates, sediments and river sediments from Gauteng, South Africa." Environmental Science and Pollution Research 22, no. 3 (2014): 2145–54. http://dx.doi.org/10.1007/s11356-014-3443-1.

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23

Vogt, Tash, Rialet Pieters, John Giesy, and Brent K. Newman. "Biological toxicity estimates show involvement of a wider range of toxic compounds in sediments from Durban, South Africa than indicated from instrumental analyses." Marine Pollution Bulletin 138 (January 2019): 49–57. http://dx.doi.org/10.1016/j.marpolbul.2018.11.019.

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24

Abia, Akebe Luther King, Eunice Ubomba-Jaswa, and Maggy Ndombo Benteke Momba. "Riverbed Sediments as Reservoirs of MultipleVibrio choleraeVirulence-Associated Genes: A Potential Trigger for Cholera Outbreaks in Developing Countries." Journal of Environmental and Public Health 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/5646480.

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Africa remains the most cholera stricken continent in the world as many people lacking access to safe drinking water rely mostly on polluted rivers as their main water sources. However, studies in these countries investigating the presence ofVibrio choleraein aquatic environments have paid little attention to bed sediments. Also, information on the presence of virulence-associated genes (VAGs) in environmentalctx-negativeV. choleraestrains in this region is lacking. Thus, we investigated the presence ofV. choleraeVAGs in water and riverbed sediment of the Apies River, South Africa. Altogether,

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Moodley, Kavandren, Srinivasan Pillay, and Keshia Pather. "Spatiotemporal characterization of water chemistry and pollution sources of the Umhlatuzana, Umbilo and Amanzimnyama River catchments of Durban, KwaZulu-Natal, South Africa." Environmental Earth Sciences 74, no. 2 (2015): 1273–89. http://dx.doi.org/10.1007/s12665-015-4118-z.

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26

Chokwe, Tlou B., Makhosazane N. Magubane, Ovokeroye A. Abafe, Jonathan O. Okonkwo, and Innocentia V. Sibiya. "Levels, distributions, and ecological risk assessments of polybrominated diphenyl ethers and alternative flame retardants in river sediments from Vaal River, South Africa." Environmental Science and Pollution Research 26, no. 7 (2019): 7156–63. http://dx.doi.org/10.1007/s11356-018-04063-4.

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27

Heritage, G., S. Tooth, N. Entwistle, and D. Milan. "Long-term flood controls on semi-arid river form: evidence from the Sabie and Olifants rivers, eastern South Africa." Proceedings of the International Association of Hydrological Sciences 367 (March 3, 2015): 141–46. http://dx.doi.org/10.5194/piahs-367-141-2015.

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Abstract. Rivers in the Kruger National Park, eastern South Africa, are characterised by bedrock-influenced "macrochannels" containing variable alluvial thicknesses and riparian vegetation assemblages. Evidence from the Sabie and Olifants rivers suggests that flows up to moderate floods (<3500 m3 s−1) tend to result in net alluviation, with sediments gradually covering the underlying bedrock. More extreme floods strip alluvium and erode bedrock, effectively exerting the primary control over long-term river morphologic development. On the Olifants River, post-flood aerial LIDAR imagery revea

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Abia, Akebe Luther King, Eunice Ubomba-Jaswa, and Maggy Ndombo Benteke Momba. "Impact of seasonal variation on Escherichia coli concentrations in the riverbed sediments in the Apies River, South Africa." Science of The Total Environment 537 (December 2015): 462–69. http://dx.doi.org/10.1016/j.scitotenv.2015.07.132.

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Rogers, J., and AJ Rau. "Surficial sediments of the wave-dominated Orange River Delta and the adjacent continental margin off south-western Africa." African Journal of Marine Science 28, no. 3-4 (2006): 511–24. http://dx.doi.org/10.2989/18142320609504202.

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Baiyegunhi, Temitope Love, Kuiwu Liu, Oswald Gwavava, and Christopher Baiyegunhi. "Textural characteristics, mode of transportation and depositional environment of the Cretaceous sandstone in the Bredasdorp Basin, off the south coast of South Africa: Evidence from grain size analysis." Open Geosciences 12, no. 1 (2020): 1512–32. http://dx.doi.org/10.1515/geo-2020-0135.

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AbstractA total of 92 representative sandstone samples of the Bredasdorp Basin in boreholes E-AH1, E-AJ1, E-BA1, E-BB1 and E-D3 have been investigated for their grain size characteristics. Grain size textural parameters and their cross plots, linear discriminate functions (LDFs), C–M (C = first percentile and M = median) diagram and log–probability plots were calculated and interpreted to understand the mode of transportation and hydrodynamic conditions and also to unravel the depositional environments of the sediments. The grain size textural parameters revealed that the Bredasdorp sandstones

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Genthe, B., L. Ndlela, and T. Madlala. "Antimicrobial resistance screening and profiles: a glimpse from the South African perspective." Journal of Water and Health 18, no. 6 (2020): 925–36. http://dx.doi.org/10.2166/wh.2020.034.

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Abstract According to the Centre for Disease Dynamics Economics and Policy, South Africa represents a paradox of antibiotic management similar to other developing countries, with both overuse and underuse (resulting from lack of access) of antibiotics. In addition, wastewater reuse may contribute towards antibiotic resistance through selective pressure that increases resistance in native bacteria and on clinically relevant bacteria, increasing resistance profiles of the common pathogens. Sediments of surface water bodies and wastewater sludge provide a place where antibiotic resistance genes a

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Weldeab, S., J. B. W. Stuut, R. R. Schneider, and W. Siebel. "Holocene climate variability in the winter rainfall zone of South Africa." Climate of the Past 9, no. 5 (2013): 2347–64. http://dx.doi.org/10.5194/cp-9-2347-2013.

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Abstract. We established a multi-proxy time series comprising analyses of major elements in bulk sediments, Sr and Nd isotopes, grain size of terrigenous fraction, and δ18O and δ13C in tests of Neogloboquadrina pachyderma (sinistral) from a marine sediment sequence recovered off the Orange River. The records reveal coherent patterns of variability that reflect changes in wind strength, precipitation over the river catchments, and upwelling of cold and nutrient-rich coastal waters off western South Africa. The wettest episode of the Holocene in the winter rainfall zone (WRZ) of South Africa occ

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Weldeab, S., J. B. W. Stuut, R. R. Schneider, and W. Siebel. "Holocene climate variability in the Winter Rainfall Zone of South Africa." Climate of the Past Discussions 9, no. 3 (2013): 2309–56. http://dx.doi.org/10.5194/cpd-9-2309-2013.

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Abstract. We established a multi-proxy time series comprising analyses of major elements in bulk sediments, Sr and Nd isotopes and grain size of terrigenous fraction, and δ18O and δ13C in tests of Neogloboquadrina pachyderma (sinistral) from a marine sediment sequence recovered off the Orange River. The records reveal coherent patterns of variability that reflect changes in wind strength, precipitation over the river catchments, and upwelling of cold and nutrient-rich coastal waters off western South Africa. The wettest episode of the Holocene in the Winter Rainfall Zone (WRZ) of South Africa

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Weldeab, S., J. B. W. Stuut, R. R. Schneider, and W. Siebel. "Holocene climate variability in the winter rainfall zone of South Africa." Climate of the Past Discussions 8, no. 3 (2012): 2281–320. http://dx.doi.org/10.5194/cpd-8-2281-2012.

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Abstract. We established a multi-proxy time series comprising analyses of major elements in bulk sediments, Sr and Nd isotopes, grain size of terrigenous fraction, and δ18O and δ13C in tests of Neogloboquadrina pachyderma (sinistral) from a marine sediment sequence recovered off the Orange River. The records reveal coherent patterns of variability that reflect changes in wind strength, precipitation over the river catchments, and upwelling of cold and nutrient-rich coastal waters off Western South Africa. The wettest episode of the Holocene in the Winter Rainfall Zone (WRZ) of South Africa occ

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35

Ntloko, Phindiwe, Carolyn G. Palmer, Frank C. Akamagwuna, and Oghenekaro N. Odume. "Exploring Macroinvertebrates Ecological Preferences and Trait-Based Indicators of Suspended Fine Sediment Effects in the Tsitsa River and Its Tributaries, Eastern Cape, South Africa." Water 13, no. 6 (2021): 798. http://dx.doi.org/10.3390/w13060798.

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The taxonomy-based response pattern of macroinvertebrates to sediment stress is well established, with tolerant taxa increasing in impacted conditions, while sensitive taxa decrease along a deteriorating water quality gradient. However, the distribution patterns of traits in response to environmental stress gradient, including suspended sediments, remain unclear, particularly in Africa, where trait-based studies are under-explored. We examined the distribution patterns of macroinvertebrate traits along a suspended sediment stress gradient and identified tolerant and sensitive traits for suspen

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Bordy, Emese M., Devon A. Bowen, John Moore, Mark H. Garnett, and Harilaos Tsikos. "A Holocene “Frozen Accident”: Sediments of Extreme Paleofloods and Fires in the Bedrock-Confined Upper Huis River, Western Cape, South Africa." Journal of Sedimentary Research 88, no. 6 (2018): 696–716. http://dx.doi.org/10.2110/jsr.2018.29.

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Davids, Rashieda, Mathieu Rouget, Margaret Burger, Kirsten Mahood, Ntswaki Ditlhale, and Rob Slotow. "Civic Ecology Uplifts Low-Income Communities, Improves Ecosystem Services and Well-Being, and Strengthens Social Cohesion." Sustainability 13, no. 3 (2021): 1300. http://dx.doi.org/10.3390/su13031300.

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Ecosystem services enhance well-being and the livelihoods of disadvantaged communities. Civic ecology can enhance social–ecological systems; however, their contributions to ecosystem services are rarely measured. We analysed the outcomes of civic ecology interventions undertaken in Durban, South Africa, as part of the Wise Wayz Water Care programme (the case study). Using mixed methods (household and beneficiary (community members implementing interventions) surveys, interviews, field observations, and workshops), we identified ecosystem service use and values, as well as the benefits of six i

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Adeleke, Babatunde, Deborah Robertson-Andersson, and Gan Moodley. "Comparative analysis of trace metal levels in the crab Dotilla fenestrata, sediments and water in Durban Bay harbour, Richards Bay harbour and Mlalazi estuary, Kwazulu-Natal, South Africa." Heliyon 6, no. 8 (2020): e04725. http://dx.doi.org/10.1016/j.heliyon.2020.e04725.

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Hahn, Annette, Enno Schefuß, Sergio Andò, et al. "Southern Hemisphere anticyclonic circulation drives oceanic and climatic conditions in late Holocene southernmost Africa." Climate of the Past 13, no. 6 (2017): 649–65. http://dx.doi.org/10.5194/cp-13-649-2017.

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Abstract. Due to the high sensitivity of southern Africa to climate change, a reliable understanding of its hydrological system is crucial. Recent studies of the regional climatic system have revealed a highly complex interplay of forcing factors on precipitation regimes. This includes the influence of the tropical easterlies, the strength of the southern hemispheric westerlies as well as sea surface temperatures along the coast of the subcontinent. However, very few marine records have been available in order to study the coupling of marine and atmospheric circulation systems. Here we present

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Abia, Akebe Luther King, Eunice Ubomba-Jaswa, and Maggy Ndombo Benteke Momba. "Occurrence of diarrhoeagenic Escherichia coli virulence genes in water and bed sediments of a river used by communities in Gauteng, South Africa." Environmental Science and Pollution Research 23, no. 15 (2016): 15665–74. http://dx.doi.org/10.1007/s11356-016-6762-6.

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Dan, Solomon Felix, Su-Mei Liu, Bin Yang, Enobong Charles Udoh, Unyime Umoh, and Ita Ewa-Oboho. "Geochemical discrimination of bulk organic matter in surface sediments of the Cross River estuary system and adjacent shelf, South East Nigeria (West Africa)." Science of The Total Environment 678 (August 2019): 351–68. http://dx.doi.org/10.1016/j.scitotenv.2019.04.422.

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Abia, Akebe Luther King, Eunice Ubomba-Jaswa, Martella du Preez, and Maggy Ndombo Benteke Momba. "Riverbed sediments in the Apies River, South Africa: recommending the use of both Clostridium perfringens and Escherichia coli as indicators of faecal pollution." Journal of Soils and Sediments 15, no. 12 (2015): 2412–24. http://dx.doi.org/10.1007/s11368-015-1209-0.

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Gumbi, Bhekumuzi P., Brenda Moodley, Grace Birungi, and Patrick G. Ndungu. "Assessment of nonsteroidal anti-inflammatory drugs by ultrasonic-assisted extraction and GC-MS in Mgeni and Msunduzi river sediments, KwaZulu-Natal, South Africa." Environmental Science and Pollution Research 24, no. 24 (2017): 20015–28. http://dx.doi.org/10.1007/s11356-017-9653-6.

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de Necker, Lizaan, Tinyiko Neswiswi, Richard Greenfield, et al. "Long-Term Water Quality Patterns of a Flow Regulated Tropical Lowland River." Water 12, no. 1 (2019): 37. http://dx.doi.org/10.3390/w12010037.

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Floodplain ecosystems in Africa are under threat due to direct anthropogenic pressure and climate change. The lower Phongolo River and associated floodplain is South Africa’s largest inland floodplain ecosystem and has been regulated by the Pongolapoort Dam since the 1970s. The last controlled flood release from the dam occurred in December 2014, after which a severe drought occurred and only a base flow was released. The central aims of this study were to determine the historic and present water quality state of the middle and lower Phongolo River and assess the possible effects of the most r

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Abia, Akebe Luther King, Arghavan Alisoltani, Jitendra Keshri, and Eunice Ubomba-Jaswa. "Metagenomic analysis of the bacterial communities and their functional profiles in water and sediments of the Apies River, South Africa, as a function of land use." Science of The Total Environment 616-617 (March 2018): 326–34. http://dx.doi.org/10.1016/j.scitotenv.2017.10.322.

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Dan, Solomon Felix, Su-Mei Liu, and Bin Yang. "Geochemical fractionation, potential bioavailability and ecological risk of phosphorus in surface sediments of the Cross River estuary system and adjacent shelf, South East Nigeria (West Africa)." Journal of Marine Systems 201 (January 2020): 103244. http://dx.doi.org/10.1016/j.jmarsys.2019.103244.

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Lederman, Michael M. "Charlie van der Horst (1952-2019)." Pathogens and Immunity 4, no. 1 (2019): 161. http://dx.doi.org/10.20411/pai.v4i1.305.

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Charlie van der Horst, an emeritus professor at the University of North Carolina and a friend of Pathogens and Immunity, disappeared from sight on Friday, June 14 during a marathon swim in the Hudson River. His death was confirmed. Few who knew him would call him Charles as formality was not his strong-suit. Charlie was born in Holland to a Dutch father and a Polish Holocaust survivor mother. His family moved to the Buffalo, New York area and sent Charlie to school at Andover. He attended Duke University where he captained the varsity swim team in 1973-74. He remained a powerful swimmer, compe

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Watson, Andrew, Jodie Miller, Manfred Fink, Sven Kralisch, Melanie Fleischer, and Willem de Clercq. "Distributive rainfall–runoff modelling to understand runoff-to-baseflow proportioning and its impact on the determination of reserve requirements of the Verlorenvlei estuarine lake, west coast, South Africa." Hydrology and Earth System Sciences 23, no. 6 (2019): 2679–97. http://dx.doi.org/10.5194/hess-23-2679-2019.

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Abstract. River systems that support high biodiversity profiles are conservation priorities worldwide. Understanding river ecosystem thresholds to low-flow conditions is important for the conservation of these systems. While climatic variations are likely to impact the streamflow variability of many river courses into the future, understanding specific river flow dynamics with regard to streamflow variability and aquifer baseflow contributions is central to the implementation of protection strategies. While streamflow is a measurable quantity, baseflow has to be estimated or calculated through

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Milan, David, George Heritage, Neil Entwistle, and Stephen Tooth. "Morphodynamic simulation of sediment deposition patterns on a recently stripped bedrock anastomosed channel." Proceedings of the International Association of Hydrological Sciences 377 (April 16, 2018): 51–56. http://dx.doi.org/10.5194/piahs-377-51-2018.

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Abstract. Some mixed bedrock-alluvial dryland rivers are known to undergo cycles of alluvial building during low flow periods, punctuated by stripping events during rare high magnitude flows. We focus on the Olifants River, Kruger National Park, South Africa, and present 2-D morphodynamic simulations of hydraulics and sediment deposition patterns over an exposed bedrock anastomosed pavement. We examine the assumptions underlying a previous conceptual model, namely that sedimentation occurs preferentially on bedrock highs. Our modelling results and local field observations in fact show that sed

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Hughes, CJ, G. De Winnaar, RE Schulze, M. Mander, and GPW Jewitt. "Mapping of water-related ecosystem services in the uMngeni catchment using a daily time-step hydrological model for prioritisation of ecological infrastructure investment – Part 2: Outputs." Water SA 44, no. 4 October (2018). http://dx.doi.org/10.4314/wsa.v44i4.08.

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South Africa is a semi-arid country which frequently faces water shortages, and experienced a severe drought in the 2016 and 2017 rainfall seasons. Government is under pressure to continue to deliver clean water to the growing population at a high assurance of supply. Studies now show that the delivery of water may be sustained not only through built infrastructure such as dams and pipelines, but also through investment in ecological infrastructure (EI). Part 1 of this paper in 2 parts concentrated on the role of EI in delivering water-related ecosystem services, as well as the motivation for

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