Articles by Keyword: Zooplankton Standing Crop

Search results for Zooplankton Standing Crop

We found 128 results for you
  1. ZOOPLANKTON DISTRIBUTION IN RELATION TO ENVIRONMENTAL CONDITIONS IN THE SWARTVLEI SYSTEM, SOUTHERN CAPE

    ZOOPLANKTON DISTRIBUTION IN RELATION TO ENVIRONMENTAL CONDITIONS IN THE SWARTVLEI SYSTEM, SOUTHERN CAPE

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa
    Swartvlei is an ectogenic meromictic coastal lake connected to the sea via an estuary which closes periodically due to the formation of a sand bar across its mouth. The inflow of high-salinity water water from the sea into the lake...
  2. ZOOPLANKTON AND ENVIRONMENTAL CONDITIONS IN A SOUTHERN CAPE COASTAL LAKE SYSTEM

    ZOOPLANKTON AND ENVIRONMENTAL CONDITIONS IN A SOUTHERN CAPE COASTAL LAKE SYSTEM

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa
    The usually natural closing and artificial opening of the Tow River mouth to the sea have a major influence on the physico-chemical environmental conditions in the coastal lake system formed by the Tow River, Eilandvlei, Langvlei and Rondevlei, as it...
  3. Re-evaluation of the disc pasture meter calibration for the Kruger National Park, South Africa

    Re-evaluation of the disc pasture meter calibration for the Kruger National Park, South Africa

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    During routine field application of the disc pasture meter (DPM) in the tall-grass rangeland of the Kruger National Park (KNP), it was noticed that the instrument frequently settles above the bulk of the grass leaf mass, leading to the suspicion...
  4. Research note: Calibrating a disc pasture meter to estimate grass fuel loads on the Zululand coastal plain

    Research note: Calibrating a disc pasture meter to estimate grass fuel loads on the Zululand coastal plain

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    A disc meter was calibrated to estimate fuel load on the Zululand coastal plain. The regression model was valid for fuel load estimates within a disc height of 1–58 cm. The mean calibrated disc height was 11.8 cm. Estimated fuel...
  5. Evidence of Induced Nutrient Deficiency in Pine Plantings on Previously Cropped Lands

    Item type: Journal Article • Journal: South African Forestry Journal
    Widespread establishment failures of Pinus species have recently occurred on agricultural land acquired for commercial forestry in South Africa. These include about 10 000 ha of previously tilled soils in the north-eastern Cape belonging to Mondi Forests. A lettuce (Lactuca...
  6. Grazing of <em>raphanus sativus</em>. L (Japanese Radish)<sup>1</sup>

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The performance of young woolled sheep was markedly better when grazing Japanese radish early in winter, when more leaf was available .Continuous grazing resulted in better performance than rotational or zero grazing.
  7. Die wiskundige simulering van koolhidraattranslokasie in natuurlike grasveld<sup>1</sup>

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Die groeifunksies benodig vir die simulasie van produksie van ‘n Themeda triandra‐grasveld met behulp van die PUTU 11 simulasiemodel is ontwikkel. Vir die ontwikkeling van die model is die veldproduksiedata van die 1980/81 groeiseisoen gebruik waarna dit suksesvol, vir drie...
  8. Performance of <em>Medicago sativa</em> under dryland conditions on the eastern Highveld

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Increased livestock numbers and improved animal performance based on dryland lucerne pastures requiring little or no nitrogenous fertilizer have been demonstrated to be feasible on the eastern Highveld. With large scale planting of lucerne‐based pasture (25% of arable land) 350...
  9. Maize as a cover crop for the establishment of perennial pasture legumes in the south‐eastern transvaal

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    In exploratory trials involving the underplanting of the perennial pasture legumes Coronilla varia, Lotus corniculatus and Medicago sativa in maize, the influence of maize density, time of planting of the legume and time of maize removal on legume establishment was...
  10. ‘n Tegniek om beskikbare bogrondse fitomassa van graspolle in ontblaring‐studies te kwantifiseer*

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    A technique to quantify available above‐ground phytomass of grass tufts in defoliation studies is described. Highly significant correlations were found between tuft volume and above‐ground phytomass in eighteen out of twenty‐two species that were examined. Tuft volume can therefore be...