A5026050593- Ecology and Vegetation Dynamics Studies
- African Botany and Ecology Studies
- Rangeland Management and Livestock Ecology
- Wildlife Ecology and Conservation
- Fire effects on ecosystems
- Ethnobotanical and Medicinal Plants Studies
- Conservation, Biodiversity, and Resource Management
- Plant Water Relations and Carbon Dynamics
- Forest ecology and management
- Tree-ring climate responses
- Rangeland and Wildlife Management
- Plant Pathogens and Fungal Diseases
- Heavy metals in environment
- Plant Diversity and Evolution
- Mine drainage and remediation techniques
- Agriculture and Rural Development Research
- Genetic and phenotypic traits in livestock
- Aquatic Ecosystems and Biodiversity
- Land Use and Ecosystem Services
- Climate variability and models
- Tree Root and Stability Studies
- Urban Agriculture and Sustainability
- Plant and Fungal Interactions Research
- Tailings Management and Properties
- Archaeology and Rock Art Studies
University of Namibia
2013-2024
University of Zimbabwe
1996-2010
SOAS University of London
1996
University of London
1996
Parasites can shape the foraging behaviour of their hosts through cues indicating risk infection. When for co-occur with desired traits such as forage quality, individuals face a trade-off between nutrient acquisition and parasite exposure. We evaluated how this may influence disease transmission in 3-year experimental study anthrax guild mammalian herbivores Etosha National Park, Namibia. At plains zebra (Equus quagga) carcass sites we assessed (i) effects on soils grasses, (ii)...
Dung beetles (Coleoptera: Scarabaeidae: Scarabaeinae) are a distinctive group of insects that specialized in utilizing mammalian dung. They play critical role the ecosystem by decomposing dung, dispersing seeds, suppressing parasites, and cycling nutrients. Anthropogenic activities such as agriculture, land modification, fragmentation, road construction, desertification have threatened dung despite their roles ecosystem. negative effect on beetle species diversity composition. Namibia has...
Abstract One of the consequences impacts elephants and fire on woodlands is a change in woody cover, which often results major challenges for wildlife managers. Changes miombo woodland cover around Sengwa Wildlife Research Area (SWRA) between 1958 1996 were quantified by analyzing aerial photographs. Woody SWRA decreazed from 95.2% to 68.2% 1996, with lowest mean 62.9% 1983. The annual absolute rate increazed −1.1% per annum 1964 recovery 1.6% 1993 while relative 3.3% 1996. There was strong...
Abstract Changes in structure and composition of miombo woodlands mediated by elephants fire were studied 26‐year‐old permanent transects established 1972 north‐western Zimbabwe. Elephants caused 48% decline proportions large trees (>11 cm diameter), significant reductions (30.9–90.9%) tree heights, stem areas (43.5%) densities (2.5%) all trees. There increases small (64.8%), shrub canopy volumes (271%) (172%). These are attributed to natural recruitment because longer fire‐free periods...
Fire is a common feature of tropical savannas and it has an important role in the ecology evolution flora. Many woody species are well adapted to fire have vigorous resprouting ability that enables them survive recurring (Frost & Robertson 1987, Hoffmann Solbrig 2003, Meyer et al . 2005). Studies on interaction between plants Mediterranean-climate regions considerably increased our understanding subject but relationships plant attributes (stem diameter height) post-fire southern African...
The baobab (Adansonia digitata L.) tree has multiple uses and is highly valued in Southern Africa, particularly the rural communities where people depend on this resource for their livelihoods. However, few studies have been conducted usefulness of high value plant species Namibia. aim study was to document biology local populations Outapi Onesi sites Omusati Region, A comparison densities, distribution patterns, structure, phenology, stem conditions baobabs between two done. Road transects...
Summary This study examines the extent of elephant damage in two State Forests and investigates whether wildlife utilization, particularly ( Loxodonta africana ), produces economic returns which offset negative impact on timber resource. Eight common species were studied; 25% trees >9·5 cm diameter at breast height (dbh) sampled had been damaged by elephants or other herbivores. P. angolensis , one most economically important species, was worst affected; 67% >34 dbh elephants. The...
Lynam, T., R. T. Cunliffe and I. Mapaure 2004. Assessing the importance of woodland landscape locations for both local communities conservation in gorongosa muanza districts, sofala province, mozambique. Ecology Society 9(4): 1. https://doi.org/10.5751/ES-00681-090401
Abstract Effects of mine dump pollution on semiarid savanna vegetation were investigated in Kombat, Namibia. Vegetation structure, species richness, composition and diversity compared between polluted control sites. Concentrations arsenic, chromium, copper, lead zinc soils significantly higher closer to a 99-year-old than site exceeded internationally recommended guidelines by as high 11 times. Mine has reduced woody plant densities, richness the affected area due disappearance...
Capsule Migrant Willow Warblers occupy more woodland types and occur at higher densities than ecologically‐similar resident Afrotropical warblers. Aims To compare population of eremomelas in adjacent acacia, mopane miombo woodlands, assess the abundance potential invertebrate prey each habitat type, order to investigate whether Palearctic migrants use open habitats are flexible their counterparts same feeding guild. Methods Using distance sampling we carried out four replicated sets point...
A comparative analysis of mopane woodland structure under different utilization pressure was done in Omusati region, northern Namibia. Heights, basal area, biomass and densities trees, shrubs stumps were compared between a game park, densely-populated (central) sparsely-populated (western) areas. Heavy significantly reduced tree plant central Omusati, leading to an unsustainable situation. Woodland recovery from previous disturbance the park has been slow. Contrary expectation, there fewer...
Following a field campaign to determine the species composition, canopy cover, aboveground annual production and leaf area index (LAI) of semi-arid savanna north-western Namibia, we present model that can be used by graziers livestock carrying capacity. The predicts net primary (ANPP) from regression equations cover fraction for plant functional classes. We tested output against another fully independent (NPP) model, namely MODIS NPP product. mean 29 sites was 343 ± 22 kg dry matter (DM)...
Abstract A review of the occurrence wild fires in Sengwa Wildlife Research Area (SWRA), Zimbabwe, is presented for period 1965–1993. The effectiveness and desirability early burning peripheral areas introduced 1979 are evaluated. More than 75% occurred between July October, 48.6% which originated from communal lands. Early led to significant reductions extent burnt, annual mean 115 km 2 (1965–1978) 11 (1979–1993) because effective control fires, Some did not burn at all after 1979, overall...