Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 1435-1454 of 4825
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The effects of different gold mine tailings on growth, reproduction and avoidance-behaviour of earthworms
(Taylor & Francis, 2020)The mining industry plays a key role in the economic development of South Africa as one of the largest exporters of valuable resources, such as gold, platinum group metals and other metals and minerals. Unfortunately, ... -
Effects of different soil ameliorants on Karee trees (Searsia Lancea) growing on mine tailings dump soil – Part I: Pot trials
(Taylor & Francis, 2012)Rehabilitation of mine tailings dams is often a challenge due to a lack of nutrients and a poor humus reservoir prevailing in tailings soils. This is especially true for establishing longer lived species such as trees. For ... -
The effects of EBL inhomogeneity on the gamma-gamma absorption of VHE gamma-rays
(HEASA, 2016)Very High Energy Gamma Rays (VHE; more than 100 GeV) from Cosmological Gamma Ray Sources such as blazars can be absorbed by the Extragalactic Background light (EBL), which leads to a high-energy cut-off in blazar spectral ... -
The effects of edaphic and climatic factors on secondary lichen chemistry: a case study using saxicolous lichens
(MDPI, 2019)Diversity of secondary lichen metabolites and their relationship to substrate and environmental parameters were studied in saxicolous lichens in the Middle and South Urals of Russia. Atranorin, usnic acid, gyrophoric acid, ... -
Effects of Endophyte Colonization of Vicia faba (Fabaceae) Plants on the Life–History of Leafminer Parasitoids Phaedrotoma scabriventris (Hymenoptera: Braconidae) and Diglyphus isaea (Hymenoptera: Eulophidae)
(Public Library of Science, 2014)Effects of the fungal endophytes Beauveria bassiana (isolates ICIPE 279, G1LU3, S4SU1) and Hypocrea lixii (isolate F3ST1) on the life-history of Phaedrotoma scabriventris and Diglyphus isaea, parasitoids of the pea leafminer ... -
Effects of Entomopathogenic fungi and Bacillus thuringiensis‐based biopesticides on Spoladea recurvalis (Lepidoptera: Crambidae)
(Wiley, 2018)Spoladea recurvalis (Fabricius) is one of the most devastating pests of amaranths caus- ing severe yield losses of 60%–100% to the crop. Unfortunately use of chemical pes- ticides is the most common control strategy that ... -
The effects of environment and ontogeny on the skin microbiome of two Stegastes damselfishes (Pomacentridae) from the eastern Caribbean Sea
(Springer, 2020)Damselfishes of the genus Stegastes are some of the most abundant fish inhabiting shallow reef habitats. Although Stegastes play an important role in promoting primary production in reef ecosystems, their territories are ... -
Effects of exercise on alterations in redox homeostasis in elite male and female endurance athletes using a clinical point-of-care test
(Canadian Science Publishing, 2016)Exercise causes alterations in redox homeostasis (ARH). Measuring ARH in elite athletes may aid in the identification of training tolerance, fatigued states, and underperformance. To the best of our knowledge, no studies ... -
The effects of habitat loss and fragmentation on the relative abundance and conservation of Southern Black Korhaan Afrotis afra, a South African endemic
(Cambridge University Press, 2023)Southern Black Korhaan is “Vulnerable” to extinction and a South African endemic that is restricted to the area of the Northern Cape Province that is west of the Great Escarpment, and to the area south of the Great ... -
Effects of host injury on susceptibility of marine reef fishes to ectoparasitic gnathiid isopods
(Springer, 2018)The importance of the role that parasites play in ecological communities is becoming increasingly apparent. However much about their impact on hosts and thus populations and communities remains poorly understood. A common ... -
Effects of initial nematode population density and water regime on resistance and tolerance to the rice root-knot nematode Meloidogyne graminicola in African and Asian rice genotypes
(Taylor & Francis, 2017)The rice root-knot nematode (RKN), Meloidogyne graminicola, is an important pathogen affecting rice production in South and Southeast Asia. Efficacy of resistance and tolerance in selected M. graminicola-resistant African ... -
Effects of iron supplementation on dominant bacterial groups in the gut, faecal SCFA and gut inflammation: a randomised, placebo-controlled intervention trial in South African children
(Cambridge University Press, 2014)Fe supplementation is a common strategy to correct Fe-deficiency anaemia in children; however, it may modify the gut microbiota and increase the risk for enteropathogenic infection. In the present study, we studied the ... -
Effects of Lactobacillus formosensis S215T and Lactobacillus buchneri on quality and in vitro ruminal biological activity of condensed tannins in sweet potato vines silage
(Wiley, 2016)Aims: This study investigated the influence of two microbial inoculants; Lactobacillus formosensis and Lactobacillus buchneri on fermentation quality, chemical composition, aerobic stability and in vitro ruminal biological ... -
Effects of livelihood activities on the households' food security in the Ogbomoso south local government area of Oyo State, Nigeria
(Kamla-Raj, 2016)This study examines the effects of livelihood activities on the households' food security in the Ogbomoso South Local Government Area of Oyo State. The study used primary data, which was obtained with the aid of structured ... -
Effects of molasses levels and growing conditions on nutritive value and fermentation quality of Opuntia cladodes silage
(Elewa Biosciences, 2016)The spineless Opuntia ficus-indica fruit (Prickly pear) industry in South Africa has increased in recent years and large quantities of cladodes are produced as a feed source for livestock. The objective of the study was ... -
Effects of montmorency tart cherry (L. Prunus Cerasus) consumption on nitric oxide biomarkers and exercise performance
(Wiley, 2018)The purpose of this study was to investigate the effects of Montmorency tart cherry juice (MC) on nitric oxide (NO) biomarkers, vascular function, and exercise performance. In a randomized, double-blind, placebo ... -
Effects of Montmorency tart cherry (Prunus Cerasus L.) consumption on vascular function in men with early hypertension
(Amer Soc Nutrition, 2016)Background: Tart cherries contain numerous polyphenolic compounds that could potentially improve endothelial function and reduce cardiovascular disease risk. Objective: We sought to examine the acute effects of ... -
Effects of organic loading rates on microbial communities and biogas production from water hyacinth: a case of mono‐ and co‐digestion
(Wiley, 2019)Background Anaerobic digestion is a microbial driven process, which results in biogas production. Although important, the relative abundance of microbial communities can be affected by disturbances such as feeding rates. ... -
Effects of PCB exposure on serum thyroid hormone levels in dogs and cats
(Elsevier, 2019)Polychlorinated biphenyls (PCBs) and their hydroxylated metabolites (OH-PCBs) might disrupt thyroid function. However, there is no clear evidence of PCB exposure disrupting thyroid hormone (TH) homeostasis in dogs and cats. ... -
Effects of prolonged restriction in water supply on photosynthesis, shoot development and storage root yield in sweet potato
(Blackwell Publishing Limited, 2008)