Articles by Author: Christian De Vries

Search results for Christian De Vries

We found 47 results for you
  1. Acoustic communication and reproductive behaviour in the aquatic frog <em>Xenopus laevis</em> (Pipidae), a field study

    Acoustic communication and reproductive behaviour in the aquatic frog <em>Xenopus laevis</em> (Pipidae), a field study

    Item type: Journal Article • Journal: African Journal of Herpetology
    We studied the acoustic and reproductive behaviour of the clawed frog, Xenopus laevis, in a pond with clear water in South Africa over a period of two months. It contained 21 adult males and females. Each was marked with a...
  2. What is <em>Ubuntu</em>,? Different Interpretations among South Africans of African Descent

    What is <em>Ubuntu</em>,? Different Interpretations among South Africans of African Descent

    Item type: Journal Article • Journal: South African Journal of Philosophy
    In this article, I describe and systematize the different answers to the question ‘What is ubuntu,?’ that I have been able to identify among South Africans of African descent (SAADs). I show that it is possible to distinguish between two...
  3. Restorative Justice and the South African Truth and Reconciliation Process

    Restorative Justice and the South African Truth and Reconciliation Process

    Item type: Journal Article • Journal: South African Journal of Philosophy
    It has frequently been argued that the post-apartheid Truth and Reconciliation Commission (TRC) was committed to restorative justice (RJ), and that RJ has deep historical roots in African indigenous cultures by virtue of its congruence both with ubuntu and with...
  4. A Cross-Cultural Comparison of Motivational Factors in Kenyan and Danish Middle and Long Distance Elite Runners

    A Cross-Cultural Comparison of Motivational Factors in Kenyan and Danish Middle and Long Distance Elite Runners

    Item type: Journal Article • Journal: Journal of Psychology in Africa
    This study examined similarities and differences in motivational factors and reasons for running between Kenyan and Danish elite runners. Participants were elite middle and long distance runners (distances from 800m to marathon) from Kenya (n = 139, males = 114,...
  5. A new subspecies of the Red-billed Hornbill, Tockus erythrorhynchus, from West Africa

    A new subspecies of the Red-billed Hornbill, Tockus erythrorhynchus, from West Africa

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    Trea, B. & Erord, C. 2000. A new subspecies of the Red-billed Hornbill, Tockus erythrorhynchus, from West Africa. Ostrich 71 (3&4):363-366. The Red-billed Hornbill, Tockus erythrorhynchus (Temminck), over most of its distribution range, has pale yellow or pink facial skin. However,...
  6. The vulnerable Osprey breeding population of the Al Hoceima National Park, Morocco: present status and threats

    The vulnerable Osprey breeding population of the Al Hoceima National Park, Morocco: present status and threats

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    In the Mediterranean, most areas belonging to the initial distribution range of the Osprey Pandion haliaetus have been lost and local populations have disappeared in recent decades because of persecution. Even though direct management actions have allowed local partial recovery,...