Now showing items 81-90 of 134
Sink regulation of photosynthesis in sugarcane
The C4 plant, sugarcane (Saccharum spp. hybrids), accumulates sucrose to high concentrations and, as a result, has been the focus of extensive research into the biochemistry and physiology of sucrose accumulation. Despite ...
The ecological implications of sea-level rise and storms for sandy beaches in KwaZulu-Natal.
The aesthetic appeal of beaches has made coastal properties prime sites for development. However, this development has been mismanaged and is within the littoral active zone. Beaches retreat landwards as sea levels rise, ...
Habitat use by ungulates in Thanda Private Game Reserve, KwaZulu-Natal.
Knowledge of habitat use and selection is essential to managing ungulate populations. This study assesses habitat use by elephant (Loxodonta Africana), giraffe (Giraffa camelopardalis), kudu (Tragelaphus strepsiceros), ...
Assessment of a process-based model to predict the growth and yield of Eucalyptus grandis plantations in South Africa.
It is believed that the process-based model 3-PG (Physiological Principles Predicting Growth; Landsberg and Waring, 1997) can potentially play a useful role within South African forestry, both as an operational and a ...
The influence of root chilling on the hydraulic characteristics of selected Eucalyptus taxa.
The hydraulic conductance of a plant is a significant factor in determining the
Sugarcane stem borers in Ethiopia : ecology and phylogeography.
Eldana saccharina Walker (Lepidoptera: Pyralidae) is an indigenous insect widely distributed throughout Sub-Saharan Africa that is a major pest of sugarcane in southern Africa. Studies have shown that populations from West ...
Metabolic physiology of Colubrid dietary specialists, Dasypeltis scabra and Dasypeltis inornata.
Metabolic rate (MR) and digestive duration are thermally dependant, and energy usage changes as body temperature (Tb) changes. Increased Tb during digestion causes a rapid increase in VO2 and a shorter postprandial metabolic ...
Investigations into the responses of axes of recalcitrant seeds to dehydration and cryopreservation.
Achieving long-term storage of germplasm is critical for the conservation of plant biodiversity. Seed storage practices require that degradative reactions causing ageing be limited. By reducing the water content, cytoplasmic ...
Production and economics of Arado and Barka cattle in Eritrea.
Grazing lands in Eritrea are degraded due to decades of overstocking and consequent overgrazing. Since the rangelands are accessible to entire village communities, organisation and coordinated decision making regarding the ...
Thermoregulation in free-ranging African-endemic small mammals : the rock elephant shrew, Elephantulus myurus and the lesser bushbaby, Galago moholi.
Endothermy in birds and mammals is invariably associated with homeothermy. However, homeothermy can only be maintained if sufficient energy is obtained to meet the animals' maintenance budget. In mammals, daily torpor and ...