Articles by Author: Bm Clark

Search results for Bm Clark

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  1. Animal‐based methods of determining herbage intake and quality under grazing conditions

    Animal‐based methods of determining herbage intake and quality under grazing conditions

    The better techniques used to quantify intake of pasture by ruminants require faeces excretion to be quantified. Chromium EDTA is a better marker for this purpose than is Cr2O3 as it can be analysed for more accurately and rapidly. In...
  2. Effects of seed priming and water potential on germination of cotton (<em>Gossypium hirsutum</em> L.) and maize (<em>Zea mays</em> L.) in laboratory assays

    Effects of seed priming and water potential on germination of cotton (<em>Gossypium hirsutum</em> L.) and maize (<em>Zea mays</em> L.) in laboratory assays

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Sub-optimal crop emergence and establishment is a problem in crop production owing to low soil moisture. The effects of seed priming (seed soaking) on cotton and maize germination at different water potentials (0, −10 kPa, −100kPa, −200 kPa, −500 kPa...
  3. Recommendations for the management of subsistence fisheries in South Africa

    Recommendations for the management of subsistence fisheries in South Africa

    Item type: Journal Article • Journal: South African Journal of Marine Science
    This paper summarizes recommendations for the management of previously marginalized and neglected subsistence fisheries in South Africa. The recommendations stem from the activities and analyses of a task group appointed by Government and mandated to provide advice about management of...
  4. Case studies on the socio-economic characteristics and lifestyles of subsistence and informal fishers in South Africa

    Case studies on the socio-economic characteristics and lifestyles of subsistence and informal fishers in South Africa

    Item type: Journal Article • Journal: South African Journal of Marine Science
    To develop a management strategy for informal fishers, a necessary first step is information about the nature of these fishers, their numbers and their socio-economic status. To accomplish this, a survey of socio-economic conditions and use of marine resources was...
  5. Perceptions of subsistence and informal fishers in South Africa regarding the management of living marine resources

    Perceptions of subsistence and informal fishers in South Africa regarding the management of living marine resources

    Item type: Journal Article • Journal: South African Journal of Marine Science
    Following the legal recognition of subsistence fishers in 1998 through the promulgation of the Marine Living Resources Act, a Subsistence Fisheries Task Group (SFTG) was appointed by national government to provide recommendations on the management of subsistence fishing in South...
  6. Identification of subsistence fishers, fishing areas, resource use and activities along the South African coast

    Identification of subsistence fishers, fishing areas, resource use and activities along the South African coast

    Item type: Journal Article • Journal: South African Journal of Marine Science
    A description is given of the research undertaken to provide a broad overview of the distribution and numbers of people who are subsistence or artisanal fishers and their activities along the coast of South Africa, to assist in the formulation...
  7. The process of developing a management system for subsistence fisheries in South Africa: recognizing and formalizing a marginalized fishing sector in South Africa

    The process of developing a management system for subsistence fisheries in South Africa: recognizing and formalizing a marginalized fishing sector in South Africa

    Item type: Journal Article • Journal: South African Journal of Marine Science
    Subsistence fishers were first recognized as a formal fishing sector in South Africa when new fishing legislation, aimed at redressing past inequalities, was enacted in 1998. Little information was available about these fishers, their activities, and the resources upon which...
  8. Assessment of resource availability and suitability for subsistence fishers in South Africa, with a review of resource management procedures

    Assessment of resource availability and suitability for subsistence fishers in South Africa, with a review of resource management procedures

    Item type: Journal Article • Journal: South African Journal of Marine Science
    The availability of resources and their suitability for subsistence and small-scale commercial fishers in South Africa were assessed and appropriate options for the management of resources recommended. Assessment of current resource utilization and recommendations for future subsistence and/or small-scale commercial...
  9. Synoptic summer wind cycles and upwelling off the southern portion of the Cape Peninsula

    Synoptic summer wind cycles and upwelling off the southern portion of the Cape Peninsula

    Item type: Journal Article • Journal: South African Journal of Marine Science
    Wind data and aerial surveys of sea surface temperature (SST) have been used to describe spatial variation in the upwelling regime off the southern portion of the Cape Peninsula (34°S, 18°E). Time series of weather data revealed a cycle controlled...
  10. Diurnal wind cycles and upwelling off the northern portion of the Cape Peninsula in summer

    Diurnal wind cycles and upwelling off the northern portion of the Cape Peninsula in summer

    Item type: Journal Article • Journal: South African Journal of Marine Science
    Summer winds along the north-west coast of the Cape Peninsula were investigated to determine their impact on a localized upwelling plume. From automatic weather stations, moored buoys and aerial surveys, a pronounced diurnal cycle in south-easterly wind flow was documented...