${session.getAttribute("locale")} 5 The invasion autecology of Iris pseudacorus L. (Iridaceae) in South Africa Wed 31 Aug 2022 16:22:50 SAST ]]> The diversity and dry season habitat associations of fish communities in the Kabompo River Basin, Upper Zambezi, Zambia Wed 31 Aug 2022 15:12:45 SAST ]]> A multispectral and machine learning approach to early stress classification in plants Wed 31 Aug 2022 12:31:44 SAST ]]> Praying mantis Wed 28 Sep 2022 15:26:49 SAST ]]> Gray Wed 28 Sep 2022 15:05:48 SAST ]]> Therapy drop-out: a descriptive case study of an imperfect sand-play therapy process with an aggressive 12 year old boy Wed 28 Sep 2022 12:41:34 SAST ]]> The regulation of privacy on cloud computing services in terms of the Protection of Personal Information Act 4 of 2013 Wed 28 Sep 2022 10:25:53 SAST ]]> The impact of urban gardening on household food security: evidence from Makhanda East, Eastern Cape Province, South Africa Wed 27 Jul 2022 14:16:56 SAST ]]> A framework for the economic valuation of wetland rehabilitation: case studies from South Africa Wed 27 Jul 2022 10:32:49 SAST ]]> The prevalence of insufficient iodine intake in pregnancy in Africa: Protocol for a systematic review and meta-analysis Wed 23 Jun 2021 12:38:41 SAST ]]> Comparison of a novel HPLC method and conventional protein assays for the quantitation of insulin aspart in Novorapid® Wed 21 Sep 2022 19:37:22 SAST ]]> Pharmacists’ attitudes and perception of using pictograms as a communication tool in practice Wed 21 Sep 2022 19:25:02 SAST ]]> A retrospective study of antimicrobial prescribing practices in paediatric patients at the Mahalapye District Hospital, Central Botswana Wed 21 Sep 2022 19:18:02 SAST ]]> An epistemic justice account of students’ experiences of feedback Wed 21 Sep 2022 19:03:08 SAST ]]> Towards the Common Good: An expansive post-abyssal (Re)stor(y)ing of the epistemic cultures of the citizen sciences Wed 21 Sep 2022 19:01:18 SAST ]]> The use of smartphones and visualisation processes for conceptual understanding of mensuration: a case study of the Mathcitymap Project in Namibia Wed 21 Sep 2022 18:35:58 SAST ]]> An investigation of how a visual teaching approach can possibly address issues of mathematics anxiety at a selected school in the Oshikoto region of Namibia Wed 21 Sep 2022 18:28:43 SAST ]]> The characterization of GTP Cyclohydrolase I and 6-Pyruvoyl Tetrahydropterin Synthase enzymes as potential anti-malarial drug targets Wed 20 Jul 2022 10:18:38 SAST ]]> Influence of argon ion implantation on the thermoluminescence properties of aluminium oxide Wed 20 Jul 2022 09:15:38 SAST ]]> Large and multi scale mechanistic modeling of Diels-Alder reactions Wed 20 Jul 2022 09:01:32 SAST ]]> A novel o/w microemulsion fixed dose combination of efavirenz, emtricitabine and tenofovir disoproxil fumarate: development and characterisation Wed 20 Apr 2022 08:42:45 SAST ]]> Motives and barriers to the implementation of renewable energy sources in South African tertiary institutions Wed 14 Sep 2022 15:55:15 SAST ]]> A conceptual IT governance framework to guide the development of interoperable health information systems Wed 14 Sep 2022 14:24:22 SAST ]]> Bond market integration in the Common Monetary Area (CMA) Wed 14 Sep 2022 14:24:19 SAST ]]> Exchange rate volatility and the returns on diversified South African investment portfolios Wed 14 Sep 2022 14:24:14 SAST ]]> The quality of higher education and its influence on graduate employability and employer perception Wed 14 Sep 2022 14:24:13 SAST ]]> The role of a national system of innovation in facilitating development in South Africa from a comparative BRICS perspective Wed 14 Sep 2022 14:17:20 SAST ]]> VIVA Comrade Moss Wed 12 May 2021 17:26:09 SAST ]]> The challenges and opportunities in ESG integration in investment activities for private equity firms/funds in South Africa Wed 07 Sep 2022 13:34:48 SAST ]]> The effectiveness of networking and collaboration in creative hubs: a case of Hub@Goethe Wed 07 Sep 2022 13:07:02 SAST ]]> Understanding trance states from the perspective of South African traditional healers - in relation to psychosis Tue 27 Sep 2022 18:30:58 SAST ]]> Service dogs for Autism Spectrum Disorder: the experiences of caregivers in South Africa Tue 27 Sep 2022 18:30:00 SAST ]]> Diski 9 Nine and Other Stories (and Things) Tue 27 Sep 2022 18:28:50 SAST ]]> The mountain’s calling Tue 27 Sep 2022 18:27:24 SAST ]]> Pink Concrete Tue 27 Sep 2022 17:48:39 SAST ]]> Cloning, expression, partial characterisation and application of a recombinant GH10 xylanase, XT6, from Geobacillus stearothermophilus T6 as an additive to chicken feeds Tue 27 Sep 2022 17:40:05 SAST ]]> Assessing the density and distribution of spotted hyaenas (Crocuta crocuta) in Hluhluwe–iMfolozi Park, KwaZulu-Natal, South Africa Tue 27 Sep 2022 17:32:51 SAST ]]> Academic or ‘zoombie’? Characterizing sleep quality, work and lifestyle behaviours among a cohort of South African academic staff during the Covid-19 pandemic Tue 27 Sep 2022 16:36:49 SAST ]]> An investigation into the force-EMG relationship for static and dynamic exertions Tue 27 Sep 2022 12:52:51 SAST ]]> Thicket expansion in a vachellia karroo-dominated landscape and its effect on herbaceous communities 65%) occurred in more recent decades. Canopy cover of ~ 50% was found to be rare in each decade. This suggests that ~50% canopy cover maybe a transient, unstable state. The period with the highest rate of canopy cover increase was 2002-2013, and this increase coincided with a high mean annual rainfall 10 years prior to 2002 and a high mean annual rainfall in most years between the 20022013 period. The period between 2002 and 2013 also had the highest number of sites transitioning from lower to higher tree canopy cover classes, indicating that rainfall may have been a factor driving bush encroachment during the past several decades. An increase in canopy cover (a decrease in light transmittance) was accompanied by changes in woody species composition during thicket formation. The low canopy cover (high light transmittance) sites were dominated by Vachellia karroo and Scutia myrtina trees, while high tree cover sites had fewer V. karroo and S. myrtina trees and were rather characterised by an abundance of thicket tree species. Species proportion, NMDS and dendrogram plots indicated that sites with a light transmittance range between 50-100% had similar tree species compositions, different from sites with light transmittances <50%. An increase in tree density was strongly correlated to an increase in canopy cover (from 2019 satellite imagery), density of trees > 3m, maximum height reached by trees, diversity of trees, total canopy volume, total canopy area and leaf area index (LAI), and a decrease in light transmittance. A structural equation model (SEM) was used to explore the relationships between canopy characteristics (maximum canopy area, canopy volume, tree diversity, density of trees, density of trees >3m, individual trees and maximum canopy height), aerial canopy cover in 2019, and light transmittance. The model explained 73% of the variation in light transmittance, mostly via the direct effect of canopy characteristics. Canopy characteristics had a strong influence on both aerial cover in 2019 and directly on light transmittance, but canopy cover in 2019 had a weak influence on light transmittance. The herbaceous layer was rich and dominated by C4 grasses such as Eragrostis plana, Sporobolus fimbriatus, Themeda triandra and Digitaria eriantha) and forbs including Hibiscus aethiopicus, Helichrysum dregeanum, Helichrysum nudifolium and Gerbera viridifolia at low canopy cover sites with high light transmittance. In contrast, high tree cover sites had fewer herbaceous species in general. Grass and forb species characteristic of these sites high canopy cover sites were Panicum maximum, Loudetia flavida, Pellaea viridis and Cyperus spp. Different sites with low light transmittance (<50%) had similar herbaceous species composition. Basal cover, richness, abundance and diversity of herbaceous plants decreased significantly with an increase in tree density, density of trees >3 m, canopy volume, canopy area, canopy cover, LAI, and increased significantly with increasing light transmittance. Most grasses had their highest densities at LAI <0.5, which was estimated to correspond to ~75% light transmittance and ~38% canopy cover and then started to decline thereafter. Herbaceous species basal cover was also highest at LAI <0.5. An SEM model indicated that herbaceous diversity, basal cover and richness responded both to light availability and to the structure of the woody vegetation directly (R2 = 0.53). While the effect of light transmittance on herbaceous communities was strong (0.41), there was little difference between the effect of light transmittance and canopy characteristics (-0.35) on herbaceous communities. Two possible threshold points, relating to two types of transitions in vegetation structure, could be deduced from this study. The first threshold occurred at canopy cover ~ 40% (LAI < ~ 0.5, light transmittance ~ 75%), at which point many of the common herbaceous species, including the dominant C4 grasses, began to decline in abundance while the composition remained characteristic of the savanna state. A canopy cover of less than ~ 40% at a site provides a suitable state for a high abundance of grass and forb species which help maintain an open system by facilitating fires. The second threshold marked a compositional shift between savanna and closed-canopy vegetation states. Savanna species (trees, grasses and forbs) dominated at high light transmittances (>50%) and were significantly reduced at low light transmittances (< 50%), indicating a possible species composition threshold at ~50% light transmittance at which a savanna state switches to a thicket (LAI ~ 1 and canopy cover ~70%). This point indicated the point where there was a significant difference in both tree and herbaceous plant compositions, with a marked reduction in the occurrence of C4 grasses at light transmittance <50%. Fire is supressed when the C4 grass layer is lost, and further thicket encroachment will take place causing complete canopy closure. Land managers in this system should start becoming concerned about a reduction in grass biomass when canopy cover reaches about 40% and would have to reduce tree cover before the threshold of 50% light transmittance (70% canopy cover from aerial photos) is reached to maintain a savanna system.]]> Tue 27 Sep 2022 11:00:55 SAST ]]> Molecular characterization of microbial communities in the Sundays and Swartkops estuaries impacted by anthropogenic activities Tue 27 Sep 2022 09:15:51 SAST ]]> Statistical and Mathematical Learning: an application to fraud detection and prevention Tue 19 Jul 2022 16:01:45 SAST ]]> Effects of hydraulic fracking fluid on soil microbial composition and diversity Tue 19 Jul 2022 09:37:26 SAST ]]> Bioethical analysis of COVID19, WASH/waste and related disaster management implications Tue 19 Jul 2022 09:14:51 SAST ]]> Adolescents and coaches/trainers perspectives of ergogenic sports supplement use within South African private high schools Tue 19 Jul 2022 09:10:34 SAST ]]> Rainwater and alternative potable water microbial water quality and DRM implications in Makana Local Municipality Tue 19 Jul 2022 07:43:58 SAST ]]> A framework for guiding the interdisciplinary design of mHealth intervention apps for physical activity behaviour change Tue 06 Sep 2022 19:47:43 SAST ]]> Institutional innovations for improved water security in smallholder irrigation schemes in KwaZulu-Natal and Eastern Cape Provinces, South Africa Tue 06 Sep 2022 19:46:27 SAST ]]> The influence of financial socialisation agents on financial knowledge, financial self-efficacy and financial behaviour among South African consumers Tue 06 Sep 2022 18:57:41 SAST ]]> Joice Mujuru and the Zanu-PF Women’s League 1973-2014: opportunities and limits of maternal dignity (musha mukadzi) and self-preservation Thu 29 Sep 2022 16:29:41 SAST ]]> The effects of temperature and exploitation on the behaviour of red roman Chrysoblephus laticeps (Sparidae) at baited video stations Thu 29 Sep 2022 15:26:40 SAST ]]> Sexual socialisation: young adult women storying how sexual activities were discussed in South African cultural contexts Thu 29 Sep 2022 09:22:41 SAST ]]> The geology, mineralogy, structure and economic aspects of the pegmatite-hosted Swanson Tantalum Deposit, Tantalite Valley area, southern Namibia Thu 22 Sep 2022 14:09:40 SAST ]]> Antimalarial activity of quinoline thiosemicarbazones: synthesis and antiplasmodial evaluation Thu 22 Sep 2022 13:34:38 SAST ]]> A laboratory simulation investigating the impact of sunglass tint on the catching performance of cricket fielders Thu 22 Sep 2022 13:27:54 SAST ]]> Mediating transition to household electricity conservation through co-designing in Makhanda, South Africa Thu 22 Sep 2022 13:20:34 SAST ]]> The assessment of degradation state in Ecological Infrastructure and prioritisation for rehabilitation and drought mitigation in the Tsitsa River Catchment 50%) of each EI category is stable, but there are areas showing signs of degradation, including 43% of grasslands degraded and 39% of wetlands, cultivated lands, and riparian zones also degraded. Degradation is dominant in the upper (T35B and T3C) and lower (T35K, T35L and T35M) parts of the catchments. The three criteria used by the stakeholders in the prioritisation process of the key EI were assigned 12 spatial attributes (the catchment characteristics about the study area in relation to the criteria) to indicate relevant information needed for selecting suitable restoration areas to enhance flow regulation. The AHP analysis results identified approximately 63% (17,703 ha) of wetlands, 88% (235,829 ha) of grasslands, 78% (13,608 ha) of abandoned cultivated fields and 93% (3,791 ha) of the riparian zones as suitable areas for restoration to mitigate drought impact through flow regulation. Also, the suitability results showed 63% (17,703 ha) of wetlands, 58% (2,203 ha) of riparian zones, 68% (11,745 ha) of abandoned cultivated fields and 46% (122,285 ha) of grasslands as suitable restoration areas for improving ecosystem services for community livelihoods. The AHP analysis identified more than 39-43% (of the degraded EI indicated by the Trends.Earth analysis) areas that are suitable for restoration, because key EI plays a significant role in flow regulation and people’s livelihoods, especially when they are managed, maintained, and restored to good health conditions. Therefore, the prioritized EI areas should be either maintained, managed, rehabilitated or restored. The major distinct causes of land degradation are woody encroachment in grasslands, invasion of alien plants on abandoned cultivated fields and soil erosion in the catchment. The most suitable EI areas recommended for restoration are those natural resources near local communities, which provide essential ecosystem services to sustain their livelihood. Therefore, degraded EI in the T35 catchments should be restored and maintained to improve livelihood and mitigate drought impacts. The study pointed out how the key selected ecological infrastructure can help mitigate the impacts of droughts and improve human livelihood. The study contributes towards the important concept of investing in ecological infrastructure to improve the social, environmental, and economic benefits.]]> Thu 22 Sep 2022 12:27:12 SAST ]]> Multicolored crocheted shawl/leg blanket Thu 22 Sep 2022 12:10:32 SAST ]]> The elucidation of nickel and zinc based Metal Organic Frameworks (MOFs) using a polycarboxylate-benzene ligand: a synthetic, spectroscopic, and thermoanalytical study Thu 22 Sep 2022 11:14:34 SAST ]]> Yellow-gold crocheted table-runner Thu 22 Sep 2022 11:07:55 SAST ]]> Set of three pink circular crochet doilies Thu 22 Sep 2022 11:00:51 SAST ]]> White cotton table mat with red, white and black designs Thu 22 Sep 2022 11:00:34 SAST ]]> Mexican woven belt Thu 22 Sep 2022 10:53:48 SAST ]]> Protecting the right to identity against catfishing Thu 22 Sep 2022 10:46:45 SAST ]]> Blue and white metal teacup, saucer and teaspoon set Thu 22 Sep 2022 10:46:31 SAST ]]> Financial technology and bank risk-taking behavior: a case of selected South African banks Thu 21 Apr 2022 17:46:55 SAST ]]> Along the river that flowed south Thu 21 Apr 2022 17:26:08 SAST ]]> Computational analysis of known drug resistant mutants of Plasmodium falciparum Dihydrofolate Reductase (PfDHFR) and screening for novel antifolates against the enzyme Thu 21 Apr 2022 17:19:02 SAST ]]> Diversified computational approaches for the identification of orthosteric drugs, allosteric modulators and unveiling drug resistance mechanisms: application to infectious diseases Thu 21 Apr 2022 17:09:08 SAST ]]> An investigation into stakeholder inclusivity and the board’s ability to create competitive advantage at South Africa’s “big five” retail banks Thu 15 Sep 2022 12:52:58 SAST ]]> Stock market volatility during times of crisis: a comparative analysis of the conditional volatilities of JSE stock indices during the 2007/08 global financial crisis and COVID-19 Thu 15 Sep 2022 12:10:55 SAST ]]> Molecular Detection of Antibiotic-Resistant Genes in Pseudomonas aeruginosa from Nonclinical Environment: Public Health Implications in Mthatha, Eastern Cape Province, South Africa Thu 13 May 2021 09:40:28 SAST ]]> Erythrina caffra - kaffirboom Thu 13 May 2021 07:30:01 SAST ]]> Integrating blockchain and microgrid technology to enable peer-to-peer energy trading: a business process model Thu 08 Sep 2022 11:28:46 SAST ]]> Magnitude Thu 01 Sep 2022 16:05:32 SAST ]]> Ethnobotany and conservation biology of Warburgia salutaris (G.Bertol.) Chiov., a threatened medicinal plant in southern Mozambique 20 cm) size classes in all the study areas but gatherers avoided harvesting bark from recruits. Although the mean densities of harvested stem was not significant this work indicated higher levels of stem destruction in FC. Harvested dead stems ware significant in the three areas and FC had the higher of (39.5±85.9 stems/ha) compared to 7.6±19.1 and 2.1±4.3 in TR and LM, respectively. Equally, the density of physiologically stressed stems differed substantially in the three areas with higher in FC 20.5± 75.5 stems/ha compared to 18.7±82.9 stems/ha in TR and 3.8±11.8 stems/ha in LM. This results suggests implementation of protection measures such as the inclusion of the species in the national CITES list to regulated cross-border trade and strengthening of the law enforcement. Genetic diversity, structure and gene flow in the exiting populations of southern Mozambique revealed that despite fragmentation and overexploitation, this species maintains a relatively high level of genetic diversity supporting the existence of random mating. Two genetic groups were found corresponding to the northern (LM and TR) and southern (FC) areas. The study suggests that, if local extinctions occurred in Mozambique, the pepper-bark tree persisted in sufficient numbers to retain a large proportion of genetic diversity. Management plans should concentrate on maintaining this high level of genetic variability through both in and ex-situ conservation actions.]]> Thu 01 Sep 2022 11:56:53 SAST ]]> The transformative potential of intersecting with arts-based inquiry and environmental learning in urban South Africa: a focus on socio-ecological water pedagogies Mon 26 Sep 2022 15:54:47 SAST ]]> Potential running related injury contributors in South African long-distance runners Mon 26 Sep 2022 11:56:53 SAST ]]> The host specificity and efficacy of Phenrica guerini (Bechyné) (Coleoptera: Chrysomelidae), a candidate biological control agent of Pereskia aculeata Miller (Cactaceae) in Australia Mon 26 Sep 2022 11:21:46 SAST ]]> Soil and vegetation recovery following Acacia dealbata clearing in the Tsitsa catchment, Eastern Cape Province of South Africa: implications for ecological restoration Mon 26 Sep 2022 09:58:04 SAST ]]> The memory altar Mon 25 Jul 2022 15:58:32 SAST ]]> Morphology, histology and histochemistry of the digestive tract of the Banded tilapia, Tilapia sparrmanii (Perciformes: Cichlidae) Mon 22 Feb 2021 13:14:37 SAST ]]> The use of the cochineal insect, Dactylopius tomentosus Lamarck, as a biological control agent for the invasive alien thistle cholla, Cylindropuntia pallida (Rose) F.M. Knuth in South Africa Mon 05 Sep 2022 12:59:57 SAST ]]> English additional language student teachers’ development of oral strategic competence and confidence Mon 01 Aug 2022 15:47:38 SAST ]]> The biology and movement patterns of non-native common carp, cyprinus carpio (l) in Groenvlei, South Africa Fri 30 Sep 2022 11:21:50 SAST ]]> Fabrication and characterization of ciprofloxacin loaded niosomes for transtympanic delivery Fri 30 Sep 2022 10:25:56 SAST ]]> Skipping stones Fri 29 Jul 2022 12:38:33 SAST ]]> Exploring learners’ engagement with literacy in a book club Fri 29 Jul 2022 11:48:00 SAST ]]> Chinese character learning with the aid of an ICT website among Mandarin Second Additional Language learners in South Africa: a case study Fri 29 Jul 2022 09:57:45 SAST ]]> Synthesis and evaluation of the medicinal potential of novel 4-hydroxycoumarin derivatives Fri 29 Jul 2022 08:40:40 SAST ]]> Multicolored crocheted shawl/leg blanket with crocheted black boarder Fri 23 Sep 2022 08:54:50 SAST ]]> The impact of the hybridisation of dactylopius opuntiae cockerell cochineal lineages on the biological control of cactus weeds Fri 22 Jul 2022 09:08:31 SAST ]]> Alcohol use among women attending antenatal care in Buffalo City, Eastern Cape Fri 22 Apr 2022 10:25:43 SAST ]]> Ceramic blue vase decorated with gold and bronze details Fri 16 Sep 2022 10:39:43 SAST ]]> Visualisation processes in teaching patterns and their generalisation: perceptions and experiences from senior phase mathematics teachers Fri 15 Jul 2022 15:41:10 SAST ]]> Exploring the role of the Department of Social Development on the integrated school health programme in the Buffalo City Municipality . Fri 10 Jun 2022 11:36:11 SAST ]]> The contribution of cultural and creative industries towards sustainable livelihoods in the Eastern Cape (2009-2019) Fri 10 Jun 2022 11:05:57 SAST ]]> Exploring the entrepreneurial intention of students in one Higher Education Institution (HEI) Fri 09 Sep 2022 12:53:04 SAST ]]> Sequence, structure, dynamics, and substrate specificity analyses of bacterial Glycoside Hydrolase 1 enzymes from several activities Fri 02 Sep 2022 12:52:41 SAST ]]> Needs assessment for gender-sensitive training in substance use disorder treatment for gender-nonconforming people Fri 02 Sep 2022 08:33:41 SAST ]]>