Browsing Department of Conservation Ecology and Entomology by Title
Now showing items 1-20 of 256
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Acoustic profiling of the landscape
(Stellenbosch : Stellenbosch University, 2014-04)ENGLISH ABSTRACT: Soft, serene insect songs add an intrinsic aesthetic value to the landscape. Yet these songs also have an important biological relevance. Acoustic signals across the landscape carry a multitude of ...
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Adjuvants to improve aerial control of the citrus mealybug Planococcus citri (Hemiptera: Pseudococcidae) using entomopathogenic nematodes
(Cambridge University Press - CUP, 2013-11)The citrus mealybug, Planococcus citri, is a highly destructive pest of citrus, occurring only in the aerial parts of plants. Humidity will be one of the key factors to consider when using entomopathogenic nematodes (EPN) ...
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Agrohidrologiese studies aan die Olifantsrivierbesproeiingskema, 1959-1962
(Stellenbosch : Stellenbosch University, 1962)No Abstract available.
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Alien grass invasion of Renosterveld : influence of soil variable gradients
(Stellenbosch : Stellenbosch University, 2008-12)This thesis examines the role of agricultural activity in the process of invasion of west coast renosterveld fragments by annual alien grass species. This highly endangered vegetation type has less than 5% remaining, it ...
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Angiostoma margaretae n. sp (Nematoda: Angiostomatidae), a parasite of the milacid slug Milax gagates Draparnaud collected near Caledon, South Africa
(Springer Verlag, 2011)Angiostoma margaretae n. sp. (Angiostomatidae) is described from the oesophagus of the slug Milax gagates Draparnaud collected near Caledon in the Western Cape Province of South Africa. The new species closely resembles ...
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Approaches towards a critical evaluation and update of the red list of South African Butterflies
(Stellenbosch : University of Stellenbosch, 2006-03)Using the World Conservation Union’s (formerly the International Union for the Conservation of Nature) IUCN 2001 categories and criteria, the conservation status of the South African butterfly fauna has been reassessed. ...
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Arthropod communities of Proteaceae with special emphasis on plant-insect interactions
(Stellenbosch : Stellenbosch University, 1989)ENGLISH ABSTRACT: Arthropod communities of five proteaceous species viz. Protea repens. P. neriifolia. P.cynaroides, Leucospermum cordifolium and Leucadendron /aureolum were studied. A faunal list of the insects was compiled ...
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Arthropods associated with commercial Proteaceae in the Western Cape Province, South Africa
(Stellenbosch : University of Stellenbosch, 2011-03)ENGLISH ABSTRACT: The commercial cultivation of Proteaceae is an important industry in the Western Cape, however, farmers are challenged with arthropod infestation which compels them to solely rely on chemical pesticides. ...
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Assessing the values and impacts of invasive alien plants on the livelihoods of rural land-users on the Agulhas Plain, South Africa
(Stellenbosch : Stellenbosch University, 2013-12)ENGLISH ABSTRACT: Invasive alien plants (IAPs) are known for their detrimental impacts on biodiversity and ecosystem goods and services. A substantial body of research has contributed to our understanding of their impacts ...
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Assessment of fish as bio-indicators of river health in rivers of the southwestern Cape
(Stellenbosch : Stellenbosch University, 2002-03)ENGLISH ABSTRACT: In this study, the Fish Assemblage Integrity Index (FAll) was applied on three rivers within the southwestern Cape. This index uses fish as indicators of biological aquatic integrity and is based ...
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Assessment of quantitative and genetic molecular variation of Acacia karroo in two extreme populations
(Stellenbosch : University of Stellenbosch, 2006-03)Acacia karroo is widespread in southern Africa and displays remarkable phenotypic plasticity over its geographical range. However, it is currently unknown whether this phenomenon is merely phenotypic variation due to ...
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Assessment of the alien marine intertidal invertebrates in the Kogelberg Biosphere Reserve, South Africa
(Stellenbosch : Stellenbosch University, 2011-12)ENGLISH ABSTRACT: The privilege of utilising resources from the globe's marine ecosystems is threatened. Adequate regional and global conservation efforts are vital. Understanding species' distributions and the environmental ...
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An assessment of the impacts of invasive Australian wattle species on grazing provision and livestock production in South Africa
(Stellenbosch : Stellenbosch University, 2013-12)ENGLISH ABSTRACT: I investigated the impacts of the invasive wattle species (Acacia mearnsii, A. dealbata, A. decurrens), on the ecological function and productivity of rangelands in South Africa and their ability to sustain ...
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Assessment of the invasive German wasp, Vespula germanica, in South Africa
(Stellenbosch : Stellenbosch University, 2015-04)ENGLISH ABSTRACT: The invasive social wasp, Vespula germanica (Fabricius, 1793) (Hymenoptera: Vespidae), stands out as a remarkably successful insect invader worldwide. It flourishes in newly invaded ecosystems, where it ...
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An assessment of the potential of irradiation as a postharvest control treatment against the banded fruit weevil, Phlyctinus callosus (Coleoptera: Curculionidae): effects on adult weevils and host fruit (‘Flavor Fall’ pluots)
(Stellenbosch : Stellenbosch University, 2013-12)ENGLISH ABSTRACT: The export of South African fruit to some of its biggest international markets may be rejected if the phytosanitary pest, Phlyctinus callosus (Coleoptera: Curculionidae) is found in fruit consignments. ...
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Assessment of toxic baits for the control of ants (Hymenoptera : Formicidae) in South African vineyards
(Stellenbosch : Stellenbosch University, 2008-12)ENGLISH ABSTRACT: Ant infestations comprising the Argentine ant Linepithema humile (Mayr), common pugnacious ant Anoplolepis custodiens (F. Smith) and cocktail ant Crematogaster peringueyi Emery are a widespread pest ...
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Assessment of veld utilisation practices and veld condition in the Little Karoo
(Stellenbosch : University of Stellenbosch, 2005-03)The veld condition in the Little Karoo is in various states of degradation and grazing by domestic livestock is considered as the major anthropogenic force that changed the landscape. This region with its extremely rich ...
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An assessment of water quality and endocrine disruption activities in the Eerste/Kuils River catchment system, Western Cape, South Africa
(Stellenbosch : Stellenbosch University, 2005-04)ENGLISH ABSTRACT: Water quality analysis forms the basis in assessing and monitoring catchments. As urban development continuously increase, pollution sources increase in either point source (wastewater treatment works, ...
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Attitudes and behaviour of landholders towards the conservation of Overberg Coastal Renosterveld, a threatened vegetation type in the Cape Floral Kingdom
(Stellenbosch : Stellenbosch University, 2003-12)ENGLISH ABSTRACT: This thesis describes the findings of a survey to investigate the attitudes and behaviour of private landholders towards the conservation of Overberg Coastal Renosterveld, a highly endangered grassy-shrubland ...
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Azorella selago (Apiaceae) as a model for examining climate change effects in the sub-Antarctic
(Stellenbosch : Stellenbosch University, 2004-12)ENGLISH ABSTRACT: There is increasing evidence that the rapid and anomalous changes in climate experienced in the last century have had widespread ecological impacts. Indeed, sub- Antarctic Marion Island has experienced ...
