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NUTRIENTS IN AFRICAN LAKE ECOSYSTEMS: DO WE KNOW ALL?
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: J.A. Thornton --- , South AfricaIt is nearly sixty years since the first studies were undertaken on the nutrient chemistry of African lakes. There have been numerous studies on the chemical composition of African waters in the intervening years. Yet as recently as five years... -
Seasonal distribution of phytoplankton in the Aby lagoon system, Ivory Coast, West Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NM Seu-Anoï --- Laboratoire d’Environnement et de Biologie Aquatique, Côte d'lvoire A Ouattara --- Laboratoire d’Environnement et de Biologie Aquatique, Côte d'lvoire YJ-M Koné --- Laboratoire d’Environnement et de Biologie Aquatique, Côte d'lvoire G Gourène --- Laboratoire d’Environnement et de Biologie Aquatique, Côte d'lvoireSeasonal variability of phytoplankton species composition, abundance and physical and chemical factors influencing phytoplankton dynamics were investigated in the Aby lagoon system, south-eastern Ivory Coast, covering the main climatic seasons in 2006–2007. Seasonal and spatial variability of nutrient concentrations in... -
Farmers’ perspectives on factors limiting tomato production and yields in Kabete, Kiambu County, Kenya
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: G. N. Karuku --- Department of LARMAT, Nairobi J. W. Kimenju --- Department of Plant Science and Crop Protection, Nairobi H. Verplancke --- Department of Soil Management and Soil Care, BelgiumA survey was carried out in Kabete, Central Kenya to establish the limitations and constraints experienced by farmers growing tomatoes. A structured questionnaire was prepared and tested in the field before the actual survey was carried out. Fifty farmers were... -
Households’ nonfarm livelihood participation and agricultural inputs investment: Evidence from northern Ethiopia
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Haile Tewele Berhe --- , EthiopiaEvidence shows that nonfarm livelihood activities are an important source of income for rural households and they may interact with farm activities in different ways. This article attempts to examine the investment linkage in which evidence is scarce in the... -
A psychological contract for the digital mindset: Factor analysis of the Psychological Contract Inputs-Outcomes Inventory (PCIOI)
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Alda Deas --- , South Africa Melinde Coetzee --- , South AfricaWe aimed to explore the factor structure of the Psychological Contract Inputs-Outcomes Inventory (PCIOI) as a potential reliable measure for assessing the psychological contract content elements of employees with a digital mindset. Employees (n = 293, mean age = 38.58... -
Effects of eucalypt and black wattle biochars from vacuum pyrolysis on sandy soil quality and cauliflower yield
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: S Mncedi --- Stellenbosch University, South Africa JF Görgens --- Stellenbosch University, South Africa PA Swanepoel --- Stellenbosch University, South Africa AG Hardie --- Stellenbosch University, South AfricaWoody invasive alien plants (IAPs), including black wattle (Acacia mearnsii De Wild.) and eucalypt species (Eucalyptus camaldulensis Dehnh.), present significant environmental challenges in South Africa. Biochar from these plants can enhance soil carbon sequestration and fertility. This study examines the...