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Browsing by Author "Hoffman, Timm"

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A pluralistic, socio-ecological approach to understand the long-term impact of mountain conservation: a counterfactual and place-based assessment of social, ecological and hydrological change in the Groot Winterhoek Mountains of the Cape Floristic Region

Author: Holden, Petra Brigitte Date: 2018 The problem: For protected areas to remain relevant, we need to understand their impact on a wide set of conservation objectives and environmental outcomes. We also need to evaluate how this influence relates to the socio-ecological environment ... Read more
Aliens in the nursery : assessing the awareness and attitudes of Cape Town nursery managers in regard to invasive species regulations

Author: Cronin, Kate Date: 2015 The horticultural industry is recognised as one of the major pathways for the introduction and spread of invasive alien plants (IAPs). In recognition of this, the South African government has recently enacted a new set of Alien and Invasive ... Read more
Analysis of long-term changes in populations of the Clanwiliam Cedar (Widdringtonia cedarbergensis) using repeat photography

Author: White, Joseph Douglas Mandla Date: 2013 Repeat photography photosets were used to analyse 20th century changes in populations of Widdringtonia cedarbergensis from four sites in the Cederberg Mountains, South Africa. Systematic evaluation of 115 photosets was combined with field ... Read more
An assessment of ecological impacts of community-based restoration on communal grasslands in the Drakensberg foothills

Author: Marx, Dane Lee Date: 2011 Okhombe is a ward in the Northern Drakensberg where community based restoration of degraded lands has been conducted for over a decade. In this important water supply region, payment for ecosystem services has been suggested as a means through ... Read more
An assessment of the distribution and conservation status of endemic and near endemic plant species in Maputaland

Author: Matimele, Hermenegildo Alfredo Date: 2016 The Maputaland Centre of Endemism (MCE), an area stretching from northern-east KwaZulu-Natal in South Africa to the Limpopo River in southern Mozambique, holds more than 2,500 native plant species. Of those, over 203 are endemic or near endemic ... Read more
Benchmarks for the future: long-term vegetation change derived form palaeoecological techniques in West-Coast Renosterveld, South Africa

Author: Forbes, Cherie Janine Date: 2014 This study focuses on long-term vegetation changes in West-Coast Renosterveld in the winter rainfall zone of the Cape Floristic Region (CFR), Western Cape, South Africa. Renosterveld is an evergreen, fire-prone Mediterranean-type shrubland ... Read more
Changes in abundance and distribution of Protea caffra in the central and northern Drakensberg as a consequence of climate and land use change

Author: Poultney, Daniel Mika-Nsimbi Date: 2014 The study investigated changes in populations of Protea caffra at five sites in the central and northern regions of the uKhlahlamba Drakensberg Park, a UNESCO world heritage site. Based on an archaeological study in 1994 that used charcoal ... Read more
Changes in distribution of indigenous forest in Table Mountain National Park from 1880-2012

Author: Poulsen, Zoe Chapman Date: 2013 South Africa's indigenous forest only covers 0.56% of the country's total land area. Its highly fragmented distribution and historically extensive exploitation has led it to be perceived as one of the South Africa's most vulnerable vegetation ... Read more
Ecological resilience at semi-arid and temperate boundaries of the Mediterranean-type Fynbos Biome, South Africa, during the Holocene

Author: Macpherson, Allan J Date: 2016 Mediterranean-type ecosystems are amongst the most vulnerable to global change. Threats from desertification are projected due to rapid expansion of adjacent semiarid systems. Changes in fire frequency and intensity can alter ecosystem ... Read more
Elephant impacts on woody vegetation around artificial waterholes in Zambezi National Park, Zimbabwe

Author: Wilson, Luke Date: 2020 Elephant are renowned for their ability to substantially alter vegetation. However, as they need to drink regularly, surface water exerts a strong influence over the distribution and magnitude of elephant impacts on vegetation. This study was ... Read more
Environmental change in Riemvasmaak, Northern Cape, South Africa twenty years after resettlement

Author: Fleury, Gabriela Date: 2016 The 75,000 ha area of Riemvasmaak, located north of the Orange River within the Northern Cape Province, is an important case study with regard to land restitution and livestock impacts upon arid rangelands hypothesized to be at disequilibrium. ... Read more
An ethnobotanical, phytochemical and metabolomics investigstion of plants from the Paulshoek Communal Area, Namaqualand

Author: Wheat, Nicola M Date: 2014 The aim of this thesis is to investigate medicinal plants from different perspectives in an attempt to arrive at a new, integrated and streamlined method for the discovery of bioactive secondary metabolites of plant origin. This will be done ... Read more
How has woody vegetation changed in north-east Namibia in response to land use, climate and fire?

Author: Eastment, Conor Date: 2020 Bush encroachment or the thickening of woody vegetation is a phenomenon occurring throughout savannas, which tends to be more pronounced in small protected areas. The consequences of bush encroachment are often negative for the conservation ... Read more
The impact of grazing along an environmental gradient in the Kamiesberg, South Africa

Author: Anderson, Philippa Mary Levick Date: 2008 The Kamiesberg Mountain range, which is situated within the arid Succulent Karoo biome, South Africa, is internationally-recognised for its high conservation value and forms the study site for this project. The Kamiesberg is straddled by the ... Read more
The influence of rainfall seasonality and climate change on the demography of Aloe Dichotoma, a long-lived succulent tree from semi-arid southern Africa

Author: Gallaher,Kirsten Sarah Leilani Date: 2014 In the arid and semi-arid western parts of southern Africa, Aloe dichotoma Masson, a long-lived succulent tree species, is thought to be responding to anthropogenic climate change. However, differences in response across its distribution are ... Read more
Landscape change and ecological processes in relation to land-use in Namaqualand, South Africa, 1939 to 2005

Author: Hongslo, Eirin ; Rohde, Rick ; Hoffman, Timm Date: 2009 This paper examines the consequences of land use on vegetation over a sixty-six year period, within various agrarian landscapes across the winterhummer rainfall ecotone in northern Namaqualand. We employ repeat ground and aerial photography ... Read more
Life history traits of South African Encephalartos spp. (Zamiaceae) and their implications for understanding population structure, responses to threats and effective conservation action

Author: Konings, Kim Martina Date: 2016 Understanding life history traits and how they influence population-level processes under different conditions have been important areas of study in evolution and ecology. One application in ecology has been to determine whether there are ... Read more
Long-term impacts of livestock grazing in the Succulent Karoo: A 20-year study of vegetation change under different grazing regimes in Namaqualand

Author: Nenzhelele, Elelwani Date: 2017 Livestock grazing is a key form of land-use around the world. Sustained, heavy grazing pressure, however, changes the vegetation structure of arid and semi-arid regions, often resulting in the local extinction of perennial, palatable species. ... Read more
Long-term Vegetation Change Before and After Converting from Livestock farming to Game Ranching in Asante Sana Game Reserve, South Africa

Author: Hyvärinen, Olli Date: 2018 Although wildlife production is widely considered beneficial for semi-arid environments, few studies have reported on the long-term environmental effects of converting from livestock production to game ranching. Asante Sana Game Reserve in ... Read more
Multi-scale, social-ecological influences on private land conservation in South Africa

Author: Clements, Hayley S Date: 2016 In understanding the behaviour of social-ecological systems, much focus has been placed on the role of institutions that govern how natural resources should be managed, and the biophysical processes affected by this management. Somewhat less ... Read more

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