Articles by Author: R M Randall

Search results for R M Randall

We found 22 results for you
  1. An Evaluation of the Use of “Gentan” Probabilities in Forestry Planning

    Item type: Journal Article • Journal: South African Forestry Journal
    An evaluation of Suzuki's concept of Gentan probabilities is presented. Model fitting is discussed in some detail. It is shown that the Gentan method is suitable only for forests that are at least close to normality.
  2. Growth analysis and photosynthetic rates in three selected grass species in the <em>burkea‚Äźeragrostis</em> savanna

    Growth analysis and photosynthetic rates in three selected grass species in the <em>burkea‚Äźeragrostis</em> savanna

    Three major grass species of the Nylsvley study site were studied: Eragrostis pallens. Digitaria eriantha and Panicum maximum. Growth analysis for the peak growth season was carried out with respect to phytomass, biomass and necromass.
  3. Initial impact of the <em>Treasure</em> oil spill on seabirds off western South Africa

    Initial impact of the <em>Treasure</em> oil spill on seabirds off western South Africa

    Item type: Journal Article • Journal: South African Journal of Marine Science
    On 23 June 2000, the bulk ore carrier MV Treasure sank off western South Africa between Dassen and Robben islands, which individually currently support the largest and 3rd largest colonies of African penguins Spheniscus demersus. Subsequently, more than 19 000...
  4. Adaptability of great cormorants <em>Phalacrocorax carbo</em> in a coastal environment demonstrated by their exploitation of introduced prey species and use of artificial breeding sites

    Adaptability of great cormorants <em>Phalacrocorax carbo</em> in a coastal environment demonstrated by their exploitation of introduced prey species and use of artificial breeding sites

    Item type: Journal Article • Journal: South African Journal of Marine Science
    An analysis of the contents of regurgitations of great cormorant Phalacrocorax carbo chicks at two coastal colonies in South Africa, one on an offhore island (St Croix) and the other at a saltworks in an estuary (Swartkops), revealed that the...
  5. BREEDING OF THE SLATY EGRET <em>EGRETTA VINACEIGULA</em> ALONG THE BORO RIVER IN THE CENTRAL OKAVANGO DELTA (BOTSWANA)

    BREEDING OF THE SLATY EGRET <em>EGRETTA VINACEIGULA</em> ALONG THE BORO RIVER IN THE CENTRAL OKAVANGO DELTA (BOTSWANA)

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    Randall, R. & Herremans, M. 1994. Breeding of the Slaty Egret Egretta vinageigula along the Boro River in the Central Okavango Delta (Botswana). Ostrich 65:39-43.
  6. Trends of African penguin <em>Spheniscus demersus</em> populations in the 20th century

    Trends of African penguin <em>Spheniscus demersus</em> populations in the 20th century

    Item type: Journal Article • Journal: South African Journal of Marine Science
    The entire nesting population of African penguins Spheniscus demersus was about 575 000 adults at the start of the 20th century. Numbers halved by the 1950s and continued to fall to about 220 000 by the late 1970s and about...
  7. INCREASING POPULATION OF CAPE GANNETS ON BIRD ISLAND, ALGOA BAY, AND OBSERVATIONS ON BREEDING SUCCESS

    INCREASING POPULATION OF CAPE GANNETS ON BIRD ISLAND, ALGOA BAY, AND OBSERVATIONS ON BREEDING SUCCESS

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    Randall, R. and Ross, G. J. B. 1979. Increasing population of Cape Gannets on Bird Island, Algoa Bay, and observations on breeding success. Ostrich 50:168-175.
  8. STATUS AND DISTRIBUTION OF THE ROSEATE TERN IN SOUTH AFRICA

    STATUS AND DISTRIBUTION OF THE ROSEATE TERN IN SOUTH AFRICA

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    Randall, R. M. & Randall, B. M. 1980. Status and distribution of the Roseate Tern in South Africa. Ostrich 51:14-20.
  9. ROSEATE TERN BREEDING BIOLOGY AND FACTORS RESPONSIBLE FOR LOW CHICK PRODUCTION IN ALGOA BAY, SOUTH AFRICA

    ROSEATE TERN BREEDING BIOLOGY AND FACTORS RESPONSIBLE FOR LOW CHICK PRODUCTION IN ALGOA BAY, SOUTH AFRICA

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    Randall, R. M. & Randall, B. M. 1981. Roseate Tern breeding biology and factors responsible for low chick production in Algoa Bay, South Africa. Ostrich 52:17-24.
  10. SHORT NOTES

    SHORT NOTES

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology