3 research outputs found
The effects of elephants and fire on vegetation at Marakele National Park, South Africa
Elephants and fire can modify African savanna ecosystems. The authors evaluated the influence that
elephants and fires had on five mountainous plant communities in Marakele National Park. These plant
communities were surveyed from 1996 to 2010 with the first sampling in 1996 in the absence of elephants.
Initially thirty-nine elephants, introduced in 1996, increased to 150 by 2010 while fires occurred roughly
every second year. Over this period vegetation changed and in four of the five cases these associated with
structural damage indices, assumed to reflect the effects of elephants. Fire played a role in one of the five
mountainous plant communities. The expansion of areas available for elephants partially resulted in halting
vegetation changes. The authors conclude that existing resource gradients still impose intensity of use by
elephants that can degrade plant communities. In some instances elephant disturbance may facilitate fire
disturbance in future. The management should focus on restoring spatial and temporal limitation of resource
gradients such as water, and on how elephants use landscapes, while protecting unique plant communities
in the interim.Les Ă©lĂ©phants et lâincendie peuvent modifier les Ă©cosystĂšmes de la savane africaine. Les auteurs ont Ă©valuĂ©
lâinfluence des Ă©lĂ©phants et des incendies sur cinq communautĂ©s de plantes montagneuses dans le parc
national Marakele. On a étudié ces communautés végétales de 1996 à 2010 avec le premier échantillonnage
fait en 1996 en lâabsence des Ă©lĂ©phants. A lâorigine, trente-neuf Ă©lĂ©phants, introduits en 1996, se sont
multipliĂ©s jusquâĂ 150 en 2010 alors que les incendies se produisaient approximativement tous les deux
ans. Au cours de cette période, la végétation a changé et, dans quatre cas sur cinq, ceux associés aux indices
de dommages structurels semblaient reflĂ©ter les effets des Ă©lĂ©phants. Lâincendie a jouĂ© un rĂŽle dans lâune
des cinq communautĂ©s de plantes montagneuses. Lâexpansion des zones disponibles pour les Ă©lĂ©phants a
entraĂźnĂ© en partie lâarrĂȘt des changements de vĂ©gĂ©tation. Les auteurs concluent que les gradients de ressources
existants imposent toujours une intensitĂ© dâutilisation par les Ă©lĂ©phants qui peuvent dĂ©grader les communautĂ©s
vĂ©gĂ©tales. Dans certains cas, la perturbation par les Ă©lĂ©phants peut faciliter celle de lâincendie Ă lâavenir.
La gestion devrait se concentrer sur la restauration de la limitation spatiale et temporelle des gradients de
ressources, comme lâeau, et sur la façon dont les Ă©lĂ©phants utilisent les paysages tout en protĂ©geant les
communautĂ©s vĂ©gĂ©tales uniques dans lâentre-temps.http://www.pachydermjournal.org/index.php/pachy/indexam2018Plant Production and Soil Scienc
The effect of seeding densities on old cultivated fields in Marakele National Park, Thabazimbi, South Africa
Large areas of the bushveld bioregion are converted from natural rangeland to cultivated fields for economic purposes. Conversion of grasslands to agricultural land alters the vegetation structure, plant species composition and ecological functioning. The aim of this paper was to evaluate the effectiveness of different seeding densities to enhance the restoration of old cultivated fields in Marakele National Park. Before these areas along the Motlhabatsi River were incorporated into the Park they were used for cultivation of crops. In an attempt to restore these areas to an improved condition, this pilot study was undertaken to determine best practice. One study area comprising two experimental sites and one control site were selected. A seed mixture consisting of natural grass species to the area was selected and sown at two different seed densities. The sites were monitored for a 2âyear period for species diversity and composition. Data were analysed using the analysis of variance (ANOVA), while species diversity was calculated for the different experimental sites using the ShannonâWiener index. Limited differences were observed between the two seeding densities. The results indicate that seeding degraded grasslands in these bushveld areas enhance the diversity and evenness of the degraded land.http://wileyonlinelibrary.com/journal/aje2019-06-01hj2018Plant Production and Soil Scienc
13th National Congress of the South African Society of Psychiatrists, 20-23 September 2004
List of abstacts and authors:
1. Integrating the art and science of psychiatry
Eugene Allers
2. Chronic pain as a predictor of outcome in an inpatient Psychiatric population
Eugene Allers and Gerhard Grundling
3. Recent advances in social phobia
Christer Allgulander
4. Clinical management of patients with anxiety disorders
Christer Allgulander
5. Do elephants suffer from Schizophrenia? (Or do the Schizophrenias represent a disorder of self consciousness?) A Southern African perspective
Sean Exner Baumann
6. Long term maintenance treatment of Bipolar Disorder: Preventing relapse
Charles L. Bowden
7. Predictors of response to treatments for Bipolar Disorder
Charles L. Bowden
8. Aids/HIV knowledge and high risk behaviour: A Geo-graphical comparison in a schizophrenia population
P Buckley, S van Vuuren, L Koen, J E Muller, C Seller, H Lategan, D J H Niehaus
9. Does Marijuana make you go mad?
David J Castle
10. Understanding and management of Treatment Resistant Schizophrenia
David J Castle
11. Workshop on research and publishing
David J Castle
12. From victim to victor: Without a self-help book
Beatrix Jacqueline Coetzee
13. The evaluation of the Gender Dysphoric patient
Franco Colin
14. Dissociation: A South African model
A M Dikobe, C K Mataboge, L M Motlana, B F Sokudela, C Kruger
15. Designated smoking rooms...and other "Secret sins" of psychiatry: Tobacco cessation approaches in the severely mentally ill
Charl Els
16. Dual diagnosis: Implications for treatment and prognosis
Charl Els
17. Body weight, glucose metabolism and the new generation antipsychotics
Robin Emsley
18. Neurological abnormalities in first episode Schizophrenia: Temporal stability and clinical and outcome correlates
Robin Emsley, H Jadri Turner, Piet P Oosthuizen, Jonathan Carr
19. Mythology of depressive illnesses among Africans
Senathi Fisha
20. Substance use and High school dropout
Alan J. Flisher, Lorraine Townsend, Perpetual Chikobvu, Carl Lombard, Gary King
21. Psychosis and Psychotic disorders
A EÂ Gangat
22. Vulnerability of individuals in a family system to develop a psychiatric disorder
Gerhard Grundling and Eugene Allers
23. What does it Uberhaupt mean to "Integrate"?
JĂŒrgen Harms
24. Research issues in South African child and adolescent psychiatry
S M Hawkridge
25. New religious movements and psychiatry: The Good News
V H Hitzeroth
26. The pregnant heroin addict: Integrating theory and practice in the development and provision of a service for this client group
V H Hitzeroth, L Kramer
27. Autism spectrum disorder
Erick Hollander
28. Recent advances and management in treatment resistance
Eric Hollander
29. Bipolar mixed states
M. Leigh Janet
30. Profile of acute psychiatric inpatients tested for HIV - Helen Jospeh Hospital, Johannesburg
A B R Janse van Rensburg
31. ADHD - Using the art of film-making as an education medium
Shabeer Ahmed Jeeva
32. Treatment of adult ADHD co-morbidities
Shabeer Ahmed Jeeva
33. Needs and services at ward one, Valkenberg Hospital
Dr J. A. Joska, Prof. A.J. Flisher
34. Unanswered questions in the adequate treatment of depression
Moderator: Dr Andre F Joubert
Expert: Prof. Tony Hale
35. Unanswered questions in treatment resistant depression
Moderator: Dr Andre F Joubert
Expert: Prof. Sidney Kennedy
36. Are mentally ill people dangerous?
Sen Z Kaliski
37. The child custody circus
Sean Z. Kaliski
38. The appropriatenes of certification of patients to psychiatric hospitals
V. N. Khanyile
39. HIV/Aids Psychosocial responses and ethical dilemmas
Fred Kigozi
40. Sex and Psychiatry
B Levinson
41. Violence and abuse in psychiatric in-patient institutions: A South African perspective
Marilyn Lucas, John Weinkoove, Dean Stevenson
42. Public health sector expenditure for mental health - A baseline study for South Africa
E N Madela-Mntla
43. HIV in South Africa: Depression and CD4 count
M Y H Moosa, F Y Jeenah
44. Clinical strategies in dealing with treatment resistant schizophrenia
Piet Oosthuizen, Dana Niehaus, Liezl Koen
45. Buprenorphine/Naloxone maintenance in office practice: 18 months and 170 patients after the American release
Ted Parran Jr, Chris Adelman
46. Integration of Pharmacotherapy for Opioid dependence into general psychiatric practice: Naltrexone, Methadone and Buprenorphine/ Naloxone
Ted Parran
47. Our African understanding of individulalism and communitarianism
Willie Pienaar
48. Healthy ageing and the prevention of Dementia
Felix Potocnik, Susan van Rensburg, Christianne Bouwens
49. Indigenous plants and methods used by traditional African healers for treatinf psychiatric patients in the Soutpansberg Area (Research was done in 1998)
Ramovha Muvhango Rachel
50. Symptom pattern & associated psychiatric disorders in subjects with possible & confirmed 22Q11 deletional syndrome
J.L. Roos, H.W. Pretorius, M. Karayiorgou
51. Duration of antidepressant treatment: How long is long enough? How long is too long
Steven P Roose
52. A comparison study of early non-psychotic deviant behaviour in the first ten years of life, in Afrikaner patients with Schizophrenia, Schizo-affective disorder and Bipolar disorder
Martin Scholtz, Melissa Janse van Rensburg, J. Louw Roos
53. Treatment, treatment issues, and prevention of PTSD in women: An update
Soraya Seedat
54. Fron neural networks to clinical practice
M Spitzer
55. Opening keynote presentation: The art and science of Psychiatry
M Spitzer
56. The future of Pharmacotherapy for anxiety disorders
Dan J. Stein
57. Neuropsychological deficits pre and post Electro Convulsive Therapy (ECT) thrice a week: A report of four cases
Ugash Subramaney, Yusuf Moosa
58. Prevalence of and risk factors for Tradive Dyskinesia in a Xhosa population in the Eastern Cape
Dave Singler, Betty D. Patterson, Sandi Willows
59. Eating disorders: Addictive disorders?
Christopher Paul Szabo
60. Ethical challenges and dilemmas of research in third world countries
Godfrey B. Tangwa
61. The interface between Neurology and Psychiatry with specific focus on Somatoform dissociative disorders
Michael Trimble
62. Prevalence and correlates of depression and anxiety in doctors and teachers
H Van der Bijl, P Oosthuizen
63. Ingrid Jonker: A psychological analysis
L. M. van der Merwe
64. The strange world we live in, and the nature of the human subject
Vasi van Deventer
65. Art in psychiatry: Appendix or brain stem?
C W van Staden
66. Medical students on what "Soft skills" are about before and after curriculum reform
C W van Staden, P M Joubert, A-M Bergh, G E Pickworth, W J Schurink, R R du Preez, J L Roos, C Kruger, S V Grey, B G Lindeque
67. Attention deficit hyperactivity disorder (ADHD) - Medical management. Methylphenidate (Ritalin) or Atomoxetine (Strattera)
Andre Venter
68. A comprehensive guide to the treatment of adults with ADHD
W J C Verbeeck
69. Treatment of Insomnia: Stasis of the Art?
G C Verster
70. Are prisoners vulnerable research participants?
Merryll Vorster
71. Psychiatric disorders in the gym
Merryl Vorster
72. Ciprales: Effects on anxiety symptoms in Major Depressive Disorder
Bruce Lydiar