Articles by Author: H A Delemarre Van De Waal

Search results for H A Delemarre Van De Waal

We found 22 results for you
  1. Evaluation of the effectiveness of iron and folate supplementation during pregnancy in a rural area of Limpopo province

    Evaluation of the effectiveness of iron and folate supplementation during pregnancy in a rural area of Limpopo province

    Item type: Journal Article • Journal: South African Journal of Clinical Nutrition
    Objective. To evaluate the effectiveness of iron and folate supplementation in antenatal clinics.
  2. Die evaluasie van droëland <em>Cenchrus ciliaris</em> L. cv Molopo vir speenkalf‐produksie in die sentrale grasveld

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Speenkalfproduksie op droëland Cenchrus ciliaris‐weiding is by drie veeladings onder aanhoudende beweiding ondersoek (1978–83). Verskille in beskikbare bogrondse fitomassa (BBF), speenmassa en die ekonomie van speenkalfproduksie word bespreek.
  3. A LIMNOLOGICAL INVESTIGATION OF LAKE LIAMBEZI, CAPRIVI

    A LIMNOLOGICAL INVESTIGATION OF LAKE LIAMBEZI, CAPRIVI

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa
    A general investigation was carried out on Lake Liambezi to characterize the limnological features of the lake. The lake, 101 km2 in area and situated within the tropics, was found to be shallow and bordered by reed swamps, particularly on...
  4. ASPECTS OF THE FISHERIES OF LAKE LIAMBEZI, CAPRIVI

    ASPECTS OF THE FISHERIES OF LAKE LIAMBEZI, CAPRIVI

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa
    Lake Liambezi, situated in the Linyanti Swamp, Caprivi, is inhabited by 43 fish species. Population estimates with seine nets, rotenone and explosives gave values of 74 to 157 kg ha−1. The composition of seine net catches differed markedly from gill...
  5. SOME OBSERVATIONS ON FISH MIGRATIONS IN CAPRIVI, NAMIBIA

    SOME OBSERVATIONS ON FISH MIGRATIONS IN CAPRIVI, NAMIBIA

    Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences
    Longitudinal and lateral migrations of freshwater fish were observed in 63 (83%) of the fish of the Upper Zambezi in the Caprivi region, Namibia. The results of 20 surveys showed that longitudinal upstream migrations were undertaken by most small cyprinids,...
  6. FUNDUDZI, A UNIQUE, SACRED AND UNKNOWN SOUTH AFRICAN LAKE

    FUNDUDZI, A UNIQUE, SACRED AND UNKNOWN SOUTH AFRICAN LAKE

    Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences
    Lake Fundudzi is a unique, small inland lake in the north eastern region of South Africa, formed by a landslide. The considerable sedimentation of its basin indicates an age in the order of 10 000s of years. It forms the...
  7. SOME OBSERVATIONS ON THE FISH LIFE IN A SEASONAL SAND RIVER

    SOME OBSERVATIONS ON THE FISH LIFE IN A SEASONAL SAND RIVER

    Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences
    Five fish species were collected in a seasonal sand river that had migrated upstream more than 150 km from the permanent Limpopo River. The population structure indicated that mainly juveniles had taken part in this colonisation. No fish were collected...