Now showing items 21-29 of 29
Effect of fire frequency on herbivore distribution and behaviour in the Kruger National Park, South Africa.
Fire plays an important role in structuring and maintaining savanna grassland ecosystems. Although regular fires are a characteristic feature of savannas, the effects of fire frequency on these systems are less well ...
Dry woodland and savanna vegetation dynamics in the Eastern Okavango Delta, Botswana.
The Okavango Delta is an extremely dynamic system with variable vegetation comprised of permanent swamps, seasonal swamps, dry islands, floodplains and dry grassland, savanna and woodland. The system is largely driven ...
Local and global controllers of grassland ecosystem stability during global change.
Human impacts on grasslands dramatically affect grassland biodiversity which impacts the ability of ecosystems to sustainably provide ecosystem services. As the extents of these anthropogenic impacts increase (due to ...
Selective impacts on the vigour and mortality of Aristida junciformis (subsp. junciformis)
The aim of grazing management is to maximise livestock production by maintaining high sward quality. Many southern African grasslands have become degraded allowing grass species unfavourable for livestock production, such ...
Effect of elevated temperatures on growth and defence of Vachellia 1 sieberiana seedlings grown with or without grass.
Warming is suggested to increase globally in the next few decades. Warming, soil nutrients, 2 water, CO2 and sunlight are the most important environmental factors for plant life. Elevated 3 temperatures can highly impact ...
Seeing the wood for the trees : an evaluation of the Buffelsdraai Landfill Community Reforestation Project.
Cities, and African cities in particular, will need a suite of relevant tools and approaches to deal with the varied climate change-related threats that these cities will likely endure in the future. African cities will ...
The effect of application of nitrogen, phosphorus, potassium and sulphur fertilisers to a perennial ryegrass sward on yield, quality and apparent intake by dairy cows.
Perennial ryegrass is an intensive, temperate pasture grass that responds well to applied fertiliser. The purpose of this project was to study the effects of fertiliser on the productivity and quality of perennial ryegrass ...
Host specificity in South African mistletoes.
Mistletoes intimately connect to their host trees with a haustorium that allows them to access nutrients and water. Mistletoes in South Africa vary greatly in their degree of host specificity. Most species occur on a wide ...
Evaluation of improved Brachiaria grasses in low rainfall and aluminium toxicity prone areas of Rwanda.
Abstract available in the print copy.