Emeritus Professor
Why are (were) our upland grasslands tree-less?
Southern African upland vegetation is dominated by extensive grasslands. They contrast with savannas at lower elevations and Karoo shrublands in more arid climates. The existence of these montane grasslands is an unresolved biogeographic puzzle. Why are there no trees? And why are trees beginning to invade these grasslands? In this talk I discuss ideas about the absence of trees and attempts to test them. Upland climate with more frost and shorter growing seasons, human deforestation, frequent fire, hostile soils have all been considered. Tests at diverse scales include correlations, dynamic vegetation models (DVMs), field and laboratory experiments. Recent studies suggest that increasing atmospheric CO2 over the last half century has been a major factor tipping the balance to favour woody plants. However factors accounting for the ‘savanna treeline’ pattern and dynamics remain at least as enigmatic as the global treeline with much to be discovered.
Specialist Researcher at DALRRD - Grootfontein ADI
His research specializes in the biotic and abiotic factors influencing Karoo vegetation dynamics, with a special focus on grazing, drought and rainfall patterns and the impact of fire.
Professor at University of Botswana
After participating in several post doc. positions from 2003 to 2009, I have been employed at the Okavango Research Institute in Maun, Botswana since August 2009, where I am now an associate professor in rangeland ecology. My research interests include vegetation ecology, plant-herbivore interactions, herbivore ecology and community-based conservation. A key focus of my research is on optimal livestock management and linking this to plant seasonal above- and below-ground growth patterns, ecophysiology and large herbivore seasonal adaptive foraging strategies. I have
authored/coauthored 57 journal articles and 5 book chapters.
Director School for Climate Studies of Sun
Professor Guy Midgley is a distinguished researcher at Stellenbosch University and Acting Director of the School for Climate Studies specializing in climate change impacts, with a focus on carbon dynamics and semi-arid rangelands. His work focuses on understanding the resilience and vulnerability of ecosystems to climate change. Midgley has contributed significantly to global climate assessments and has authored numerous publications. His research aims to inform sustainable management practices and policy decisions to mitigate climate change effects on biodiversity and ecosystem services.
PhD Student at University of KwaZulu-Natal
Candidate Scientist at KwaZulu-Natal Department of Agriculture and Rural Development
Post Doctoral Fellow at Rhodes University
Retired director of AES
Director & Associate Professor in Geography of Afromontane Research Unit / University of the Free State
PhD student at Agricultural Research Council
MJ Danckwerts Consulting (Pty) Ltd.
Vegetation scientist at SANBI
PDP Postdoctoral Researcher at South African Environmental Observation Network
PhD Candidate at University of the Witwatersrand, Johannesburg
Biodiversity Technicians at SAEON
Leb (Université de Parakou), Parakou, Benin
Grade C Production Scientist at Dohne Agricultural Development Institute
VLG Statistical Services
Biodiversity Intern at South African Environmental Observation Network
Posdoctoral Researcher at University of the Free State
Student at Department of Animal Science, School of Agricultural Sciences, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho, South Africa
Lecturer at University of the West Indies
South African National Biodiversity Institute
Node Coorindator at SAEON Grasslands-Forests-Wetlands Node
Kznwildlife
Scientist at KZN Department of Agriculture and Rural Development
Student at Agricultural Research Council - Animal Production: Rangeland and Forage Sciences
Professor at University of KwaZulu-Natal
Biodiversity Scientist at NRF-SAEON
Professor at Texas
Student at North West University
Production Scientist at Eastern Cape Department of Rural Development Agrarian Reform
PhD Student at PO Box 463 rebone
Student at Afromontane Research Unit / University of the Free State
Research Technician at Agricultural Research Council - Animal Production: Rangeland and Forage Sciences
Rhodes University
Ecological and Environmental Monitoring Coordinator at Lapalala Wilderness
Junior Researcher at Agricultural Research Council
Junior Researcher at Agricultural Research Council
Assistant Professor at North Dakota State University
Doctoral Student at Rhodes University
Student at Agricultural Research Council - Animal Production: Rangeland and Forage Sciences
University of KwaZulu Natal
Lecturer at University of South Africa
South African National Biodiversity Institute (SANBI)
Senior Scientist 1 at SANBI
Pasture Science Lecturer at University of Limpopo
Researcher at Agricultural Research Council
Production Scientist at Department Of Agriculture
Senior Research Scientist at Agricultural Research Council
Research Assistant at Agricultural Research Council - Animal Production: Rangeland and Forage Sciences
PhD student at University of Pretoria
MSc student/fire researcher at UNISA/ WORKING ON FIRE
Associate Professor (Emeritus) at Utah State University
Postdoctoral Fellow at University of the Free State
Senior Development Technician at Mpumalanga Department of Agriculture, Rural Development and Land Administration
Junior Researcher at ARC
PhD Student at North-West University (Potchefstroom Campus)
Scientist at Western Cape Department of Agriculture
Ecologist at Johannesburg City Parks and Zoo
Student at Stellenbosch University
post graduate student at Agricultural Research Council - Animal Production: Rangeland and Forage Sciences
MSc student at Agricultural Research Council
Professor at University of the Free State
Student at University of Cape Town
Hydrologist at Saeon
Associate professsor at WITS UNIVERSITY
Senior lecturer at University of the Free State
Emeritus Professor at Stellenbosch University
Postdoctoral Fellow at SANBI
Prof at Rhodes University
Production Scientist at Department Of Agriculture
Agricultural Economist at Agricultural Research Council
Senior Research Assistant at ARC