Articles by Keyword: Fishing Pressure

Search results for Fishing Pressure

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  1. Changes in population structure of the white grouper <em>Epinephelus aeneus</em> as a result of long-term overexploitation in Senegalese waters

    Changes in population structure of the white grouper <em>Epinephelus aeneus</em> as a result of long-term overexploitation in Senegalese waters

    Item type: Journal Article • Journal: African Journal of Marine Science
    In Senegal, a significant decrease in catches indicates that many demersal fish stocks are being overexploited. The white grouper Epinephelus aeneus, locally known as the ‘thiof’, is exploited by both small-scale and industrial fisheries. A 28-year database of E. aeneus...
  2. Multi-stakeholder collaboration yields valuable data for cetacean conservation in Gamba, Gabon

    Multi-stakeholder collaboration yields valuable data for cetacean conservation in Gamba, Gabon

    Item type: Journal Article • Journal: African Journal of Marine Science
    Private industry, the Government of Gabon and two international NGOs collaborated to conduct marine surveys off the coast of Gabon, Central Africa. Surveys addressed multiple objectives of surveillance and monitoring, the documentation of the distribution of and threats to the...
  3. Multiple Resource Utilisation Developments in Mondi Forests

    Item type: Journal Article • Journal: South African Forestry Journal
    Defined as the use of available resources other than the planted trees on Mondi's landholdings, the development of various MRU projects is described from 1975 onwards. Projects are differentiated into those that are directly dependant on the presence of planted...
  4. Influence of stocking rate and grazing systems on available grazing in the northern cape<sup>1</sup>

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The influence of rotational and continuous grazing systems, each applied with four stocking rates, on the above‐ground phytomass of veld was determined over four years.
  5. Die uitwerking van ‘n hoë veedigtheid op die benutting van etlike spesies in die sentrale hoër Karoo

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    ‘n Proef is uitgevoer om die uitwerking van ‘n hoë veedigtheid vir ‘n kort periode op die benutting van 11 spesies in die Sentrale Hoër Karoo te bepaal. Benutting is bepaal deur die droë massa van 50 plante per spesie...
  6. Composition, pattern and diversity of some Transkeian grasslands

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Species composition, pattern and diversity of selected grassland communities were determined by using point samples, transects and quadrats. The continuously grazed grasslands of Dohne Sourveld generally had the richer species composition, the highest diversity and the most variable intra‐community pattern...
  7. Seasonal grazing capacity of an irrigated grass/legume pasture in the Rûens area of the southern Cape

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Seasonal changes in grazing capacity of an irrigated grass/legume mixture consisting of lucerne, red clover, white clover, tall fescue, cocksfoot and perennial ryegrass were determined in the Rûens area of the southern Cape. Applying variable stocking rates and three grazing...
  8. Changes in abundance of the northern Benguela sardine stock during the decade 1990–2000, with comments on the relative importance of fishing and the environment

    Changes in abundance of the northern Benguela sardine stock during the decade 1990–2000, with comments on the relative importance of fishing and the environment

    Item type: Journal Article • Journal: South African Journal of Marine Science
    The northern Benguela stock of sardine Sardinops sagax used to be considered one of the major clupeoid stocks of the world; it supported an average annual catch of >700 000 tons throughout the 1960s. The stock has been in a...
  9. Changes to regulations and the gear used in the South African commercial fishery for <em>Jasus lalandii</em>

    Changes to regulations and the gear used in the South African commercial fishery for <em>Jasus lalandii</em>

    Item type: Journal Article • Journal: South African Journal of Marine Science
    Alterations to the operational fishing gear used in the South African west coast rock lobster Jasus lalandii fishery and their resultant impacts are investigated. The most important developments have been: (i) a change during the 1960s from hand-hauled hoopnets to...
  10. CATCH AND EFFORT IN THE LAKE KARIBA SARDINE FISHERY

    CATCH AND EFFORT IN THE LAKE KARIBA SARDINE FISHERY

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa
    The fishery for Limnothrissa on Lake Kariba, which produced nearly 25 000 t in 1985, is backed by a comprehensive statistical system which increases the chance of using catch and effort models to manage it. The way in which effort...