Browsing Natural and Agricultural Sciences by Title
Now showing items 810-829 of 2738
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Early failure prediction during change impact analysis for improving object-oriented software maintenance
(2014)Change is inevitable and an important property of software. Software applications are changed during their life-time in order to remain useful. Nonetheless, changes also come with high risks when it is made. Regardless ... -
Early warning system for the prediction of algal-related impacts on drinking water purification
(North-West University, 2015)Algae and cyanobacteria occur naturally in source waters and are known to cause extensive problems in the drinking water treatment industry. Cyanobacteria (especially Anabaena sp. and Microcystis sp.) are responsible for ... -
EcoHealth survey of Herpetofauna in South Africa
(North-West University (South Africa), 2023)In this project, the samples were taken from reptiles’ oral and cloacal cavities. The majority of samples originated from healthy-appearing captive reptiles therefore the bacteria detected in this study form part of the ... -
An ecological assessment of the genus Cynodon for reclamation and restoration of disturbed areas in Southern Africa
(North-West University (South Africa), 1997)A large section of landscape degradation in South Africa resulted from among others, extensive mining activities. Usually these disturbed areas are plagued with a combination of adverse conditions. Revegetation is the ... -
Ecological factors influencing the survival of the Brenton Blue butterfly Orachrysops niobe (Trimen) (Lepidoptera: Lycaenidae)
(North-West University, 2005)The Brenton Blue butterfly, Orachrysops niobe (Trimen) is currently only known to be extant at one locality in the southern Cape (the Brenton Blue Butterfly Reserve = BBBR), and currently globally Red Listed as "Critically ... -
Ecological impacts of Highveld gerbils (Tatera Brantsii) on a rehabilitated ash disposal site
(North-West University, 2006)Tatera brantsii was numerically dominant in the small mammal community on the plateaux of the rehabilitated ash disposal sites of ESKOM's Hendrina Power Station in 1998 and 1999 (Vermaak 2000). The species seemed well ... -
An ecological integrity assessment of the lower Amatikulu, Thukela and Umvoti rivers, KwaZulu–Natal, South Africa
(North-West University, 2013)The ecosystem services of the lower Amatikulu, Thukela and Umvoti Rivers are used extensively through sugarcane agricultural activities, heavy industries and rural sewage-treatment works. These activities affect the ... -
Ecological risk assessment of amphibians in the Phongolo River floodplain
(North-West University (South Africa), 2021)The Phongolo River floodplain in South Africa hosts the highest floodplain biodiversity in the country, while also being highly utilised for commercial and subsistence agriculture. The floodplain falls within the malaria ... -
Ecological studies of indegenous bambara groundnut rhizosphere bacteria and their metabolic activities
(North-West University (South Africa), 2017)With the rise in world population and decrease in food supply due to global climate change, food security becomes very pertinent. Malnutrition, food scarcity and poverty have consistently affected population growth. This ... -
An ecological study into the possible reclamation value of reedbeds in a coal mine wetland system in Kwazulu-Natal
(North-West University, 2004)The single biggest environmental problem facing the coalmine industry today is the high acid concentration in mine runoff water. After pollution prevention and effluent reuse, reclamation is the most important component ... -
An ecological study of the coliform group, with special reference to the status of Escherichia coli I as an indicator organism of faecal pollution of water
(North-West University (South Africa), 1966)"Abstract not copied" -
An ecological study of the plant communities and degraded areas of the Highveld National Park, North West Province, South Africa
(North-West University, 2007)The objectives of the study were to identify, classify, describe and map the plant communities in the proposed Highveld National Park, including the degraded Spitskop areas. Vegetation sampling was done by means of the ... -
An ecological survey of the soil mycoflora of two forest communities in Zululand
(North-West University (South Africa), 1967)The myooflora of the soil and litter of two areas in Zululand with markedly different soils and vegetational cover was studied over a period of one year. This was a first attempt to investigate the nature and composition ... -
Ecology and calling behaviour of the anurans of northern Zululand, South Africa
(North-West University (South Africa). Potchefstroom Campus, 2019)Amphibian population declines and extinctions have become a global problem. In order to address and track the extent of these declines, key information is needed. Therefore, a dire need exists for non-invasive, rapid, ... -
Ecology and conservation of the butterfly Thestor brachycerus brachycerus (Trimen, 1883) from the Western Cape
(North-West University, 2015)The 1883 discovery, research into generic life histories and taxonomic investigations into the aphytophagous butterfly Thestor brachycerus brachycerus (the Knysna Skolly) from Knysna, South Africa are described. Its slide ... -
Ecology and population genetic structure of strains of Teretrius nigrescens (Coleoptera: Histeridae), predator of Prostephanus truncatus (Coleoptera: Bostrichidae)
(North-West University, 2009)The larger grain borer (LGB) Prostephanus truncatus (Horn) is the most important pest of farm stored maize and cassava in Africa. This alien invasive species was introduced into the continent from Mesoamerica in the late ... -
The ecology of chytrid lineages in southern Africa
(North-West University (South Africa), 2020)The inter- and intraspecific diversity of microbial communities is known to be an important, but difficult to disentangle, factor in pathogen ecology. Conspecific or interspecific microbial interactions may result in ... -
Ecology of maize stemborers in irrigated subsistence farming systems in the Limpopo Province
(North-West University, 2006)Stemborer ecology in South Africa has been studied well but largely in maize in commercial monoculture production systems. Stemborers are important pests of maize in resource-poor farming systems at the Tshiombo irrigation ... -
Ecology, systematics and evolutionary biology of frog blood parasites in northern KwaZulu-Natal
(North-West University (South Africa). Potchefstroom Campus, 2019-05)Blood parasites have been recorded in a variety of vertebrate and invertebrate hosts, inhabiting both aquatic and terrestrial environments. Until this study, only a few blood parasite surveys had been carried out on frogs ... -
Ecomorphological guilds and diet of exotrophic anuran tadpoles
(North-West University (South Africa), 2014)To test the applicability of anuran tadpole functional ecology with regards to diet as a tool to determine ecosystem function of aquatic habitats, all the presently known as southern Africa anuran species’ tadpoles were ...
