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Now showing items 11-20 of 43
Regulatory takings
(2005)
Regulatory takings have become an increasingly important legal and economic issue in the USA and elsewhere, resulting in large claims for compensation. The purpose of this paper is twofold: firstly, to stimulate the interest ...
Bone growth patterns in two cordylid lizards, Cordylus cataphractus and Pseudocordylus capensis
(2005)
Cross-sections through the midshaft of the femora from an ontogenetic range of individuals were examined for Cordylus cataphractus, a heavily armoured, group-living lizard found in the western parts of South Africa, and ...
The effects of past management practices for invasive alien plant control on subsequent recovery of fynbos on the Cape Peninsula, South Africa
(2004)
Integrated control aimed at reducing impacts of alien woody plant invasions on biodiversity is underway in many parts of the Cape Floristic Region. However, the kinds of control measures applied may themselves affect the ...
Vegetation of mesas and surrounding plains in the southeastern Nama Karoo, South Africa
(2004)
Plant community composition and distribution on and off isolated mesas were investigated across Nama Karoo communities in the Eastern Cape, South Africa. Species composition and cover were measured in plots along a transect ...
Ecosystem carbon storage under different land uses in three semi-arid shrublands and a mesic grassland in South Africa
(2005)
Carbon (C) storage in biomass and soils is a function of climate, vegetation type, soil type and land management. Carbon storage was examined in intact indigenous vegetation and under different land uses in thicket (250-400 ...
The effect of boron levels in nutrient solutions on fruit production and quality of greenhouse tomatoes
(2004)
Insufficient fruit set of tomatoes owing to poor pollination in low cost greenhouses is a problem in South Africa, as bumblebee pollinators may not be imported. Since sub-optimum boron (B) levels may also contribute to ...
Initial growth potential and biomass production of field established guayule (Parthenium argentatum Gray.) cultivars
(2005)
The initial growth potential and biomass production of four guayule cultivars under dryland conditions were investigated at different localities in South Africa. Growth (plant survival, height, canopy diameter, stem diameter) ...
Convergence and divergence in prey of sympatric canids and felids: Opportunism or phylogenetic constraint?
(2004)
Since the canids and felids diverged in the mid-Eocene or earlier, each family has developed a suite of morphological and behavioural adaptations for obtaining and consuming prey. We here distinguish between prey taxa ...
The effects of acclimation on thermal tolerance, desiccation resistance and metabolic rate in Chirodica chalcoptera (Coleoptera: Chrysomelidae)
(2005)
Despite much focus on species responses to environmental variation through space and time, many higher taxa and geographic areas remain poorly studied. We report the effects of temperature acclimation on thermal tolerance, ...
The Upemba lechwe, Kobus anselli: An antelope new to science emphasizes the conservation importance of Katanga, Democratic Republic of Congo
(2005)
Thirty-five museum specimens collected in 1926 and 1947-48 vouch for the distinctiveness of an undescribed large mammal, a form of lechwe antelope. Their preservation has allowed comparative analyses of morphological ...