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A NOTE ON THE UNUSUAL CRUSTACEAN COMMUNITY OF A TEMPORARY POOL IN THE NORTHERN CAPE
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: M. Hamer --- , South Africa N.A. Rayner --- Department of Zoology and Entomology, South AfricaA temporary pool in a dry stream bed traversing Grootvloer Pan in the Northern Cape was inhabited by fifteen branchiopod and calanoid copepod crustacean species. There was an unusually high number of congeneric species in the pool; in the class... -
VARIABILITY IN THE INVERTEBRATE FAUNA OF AN INTERMITTENT STREAM OVER THREE CONSECUTIVE MIDSUMMER PERIODS
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: M. C. Uys --- , South Africa J. H. O'Keeffe --- , South AfricaNon-perennial rivers in semi-arid regions are exposed to unpredictable and highly variable rainfall and hydrology which can have considerable effects on faunal organisation at different scales. Spatial and temporal dynamics in the aquatic invertebrate fauna of an aseasonal intermittent river... -
Fire and the dynamics of a semi-arid grassland: influence on soil characteristics
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: H A SnymanThe short-term impact of fire burning with the wind (head fire) and against the wind (back fire) on soil characteristics (soil-water content, soil compaction, soil temperature, organic matter, pH, exchangeable Ca, Mg, K, Na and extractable P) were determined in... -
The effect of defoliation during wilting on the production of Themeda triandra and Eragrostis lehmanniana in semi‐arid grassland
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: H.A. Snyman --- Department of Pasture Science, Republic of South AfricaThe effect of defoliation during wilting on the production of Themeda triandra and Eragrostis lehmanniana was studied over four years (1977 to 1980). Defoliation whilst the plants were at temporary wilting point in the early growing season (before 1 January)... -
The Scientific Basis of Criminology
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Ann-Mari Elizabeth Hesselink --- University of South Africa, Friedo Johann Willem Herbig --- University of South Africa,Criminology as a science has evolved over the past 50 years from a “sub-discipline” into a self-reliant and contemporary discipline. Many adjacent to criminology Social Science experts believe that criminology has ‘nothing to offer’ but mere theoretical explanations while other... -
Branchipodopsis species — specialists of ephemeral rock pools
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: L Brendonck ML Hamer BJ Riddoch MT SeamanThe anostracan Branchipodopsis genus is widespread throughout southern Africa and is the second most speciose anostracan taxon in this sub-continent. Branchipodopsis species are particularly dominant in small short-lived and clear rock pools, to the vagaries of which they are extremely... -
Bioassessment in ephemeral rivers: constraints and challenges in applying macroinvertebrate sampling protocols
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Watson --- Centre for Environmental Management, South Africa HF Dallas --- , South AfricaHydrology is a major factor controlling the structure and function of river ecosystems. In contrast to perennial rivers, temporary rivers have periods where surface flow ceases resulting in a highly variable flow regime. Existing bioassessment methods in South Africa are... -
A hotspot of large branchiopod diversity in south-eastern Zimbabwe
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: T Nhiwatiwa --- KU Leuven, Laboratory of Aquatic Ecology, Belgium A Waterkeyn --- KU Leuven, Laboratory of Aquatic Ecology, Belgium BJ Riddoch --- Department of Biological and Medical Sciences, UK L Brendonck --- KU Leuven, Laboratory of Aquatic Ecology, BelgiumLarge branchiopods are considered threatened across much of their global range. However, because several regions, including Zimbabwe in general and its south-eastern lowveld in particular, remain largely unstudied, interpretations of species distribution patterns are often based on limited data. A... -
Variability in estuarine water temperature gradients and influence on the distribution of zooplankton: a biogeographical perspective
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: TH Wooldridge --- Department of Zoology, South Africa SHP Deyzel --- , South AfricaStructure and variability of water temperature gradients and potential influence on distribution of two tropical zooplankters (the mysid Mesopodopsis africana and the copepod Acartia natalensis) and their temperate congenerics (M. wooldridgei and A. longipatella) was investigated over a 10-year period... -
Reproductive biology of Corymbia citriodora subsp. variegata and effective pollination across its native range in Queensland, Australia
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: CFE Bacles J Brooks DJ Lee PM Schenk AJ Lowe A KremerThe spotted gum species complex represents a group of four eucalypt hardwood taxa that have a native range that spans the east coast of Australia, with a morphological cline from Victoria to northern Queensland. Of this group, Corymbia citriodora subsp... -
Anaesthetic management of a patient with sick sinus syndrome for exploratory laparotomy
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: S Alex --- Department of Anaesthesiology, India JP Saneesh --- Department of Anaesthesiology, India R Rao --- Department of Anaesthesiology, India M Upadya --- Department of Anaesthesiology, IndiaSick sinus syndrome is a generalised abnormality of cardiac impulse formation that may be caused either by an intrinsic disease of the sinus node, which makes it unable to perform its pacemaking function, or by extrinsic factors. It commonly affects... -
The effect on taxpayers of new tax legislation regarding foreign exchange transactions
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: R Oberholzer --- Department of Taxation, J S Wilcocks --- School of Applied Accountancy,Numerous problems have been encountered with the practical application of the new taxation legislation relating to foreign currency transactions. The purpose of this paper is to analyse the amendments relating to foreign exchange transactions and to illustrate, by using examples,... -
Resource partitioning in two coexisting cladocerans, Daphnia magna and Scapheloberis kingi (Anomopoda: Daphniidae), in north-eastern Algeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: K Chakri --- Laboratoire de Recherche et de Conservation des Zones Humides, Algeria B Samraoui --- Laboratoire de Recherche et de Conservation des Zones Humides, AlgeriaLife-history traits of two coexisting cladocerans, Daphnia magna Straus and Scapheloberis kingi Sars, inhabiting a temporary pond in north-eastern Algeria were monitored in 2013 under laboratory conditions. Their life histories were compared for differences in traits such as age and... -
Contrast and contradiction: Being a black adolescent in contemporary South Africa
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Natasha Arndt --- Department of Psychology, South Africa Luzelle Naudé --- Department of Psychology, South AfricaThis study aimed to gain in-depth understanding of the lived identity of black African adolescents in a contemporary South African setting. A purposive sample of 59 adolescents (females = 47%; Sesotho = 46%, Setswana = 36%, Other = 18%) from... -
Adolescents’ perceptions of health and well-being: Influences of urban contemporary music
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Cindy Swartbooi --- Department of Psychology, South Africa Shazly Savahl --- Department of Psychology, South Africa Deborah Isobell --- Department of Psychology, South Africa Gadija Khan --- Department of Psychology, South Africa Cassandra Wagenaar --- Department of Psychology, South Africa Fadzisai Makonyonga --- Department of Psychology, South Africa Thandokazi Maseti --- Department of Psychology, South Africa Laaiqah Parker --- Department of Psychology, South Africa Tshinondiwa Ramaite --- Department of Psychology, South AfricaThe study aimed to explore adolescents’ perceptions of how urban contemporary music influences health and well-being among them. Data on health and well-being effects of music consumption were gathered from a convenience sample of 16 participants (male = 50%, females... -
The development and implementation of a management plan for the Seekoei Estuary, South Africa: a case study guided by socio-economic issues
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: TH Wooldridge --- Department of Zoology and Institute for Coastal and Marine Research, South Africa JB Adams --- Department of Botany and Institute for Coastal and Marine Research, South AfricaThe large Temporarily Closed Seekoei Estuary has a long history of poor management. In 1969, a swimming pool complex was built in a position impinging on the mouth. The construction of a 500 m causeway across the lagoon connecting the... -
Dispositions of agency as explanatory mechanisms of employees’ satisfaction with retention practices
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Khatoon Gani --- Department of Human Resource Management, South Africa Ingrid Potgieter --- Department of Human Resource Management, South Africa Melinde Coetzee --- Department of Industrial and Organisational Psychology, South AfricaThis study explored the explanatory power of psychological dispositions of agency (i.e. employability attributes and organisational commitment) in relation to employees’ satisfaction with organisational retention practices. Participants were a convenience sample of employees from a higher education academic institution in... -
Temporary academics in South African higher education institutions: Their lived precarity experiences
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Shihaam Solomon --- University of the Western Cape, South Africa Marieta du Plessis --- University of the Western Cape, South AfricaTemporary academic appointments are increasingly prevalent in higher education institutions across the globe. The lived experiences of temporary academic staff within South African higher education institutions were explored. Twenty-six temporary academic staff (females = 69%, black = 75%, white =...