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Department of Conservation Ecology and Entomology
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Browsing Department of Conservation Ecology and Entomology by Title

Browsing Department of Conservation Ecology and Entomology by Title

Now showing items 1-20 of 177

Acoustic profiling of the landscape

Grant, Paul Brian Charles (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 ...
Adjuvants to improve aerial control of the citrus mealybug Planococcus citri (Hemiptera: Pseudococcidae) using entomopathogenic nematodes

Van Niekerk, S. Malan, A. P. (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) ...
Alien grass invasion of Renosterveld : influence of soil variable gradients

Muhl, Sara Ann (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 ...
Angiostoma margaretae n. sp (Nematoda: Angiostomatidae), a parasite of the milacid slug Milax gagates Draparnaud collected near Caledon, South Africa

Ross, Jenna L. Malan, Antoinette P. Ivanova, Elena S. (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 ...
Approaches towards a critical evaluation and update of the red list of South African Butterflies

Ball, Johathan Bradford (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. ...
Arthropod communities of Proteaceae with special emphasis on plant-insect interactions

Coetzee, J. H.(Jacobus Hendrik) (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 ...
Arthropods associated with commercial Proteaceae in the Western Cape Province, South Africa

Sasa, Archbold (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. ...
Assessment of quantitative and genetic molecular variation of Acacia karroo in two extreme populations

Bayonne Mboumba, Georges (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 ...
Assessment of the alien marine intertidal invertebrates in the Kogelberg Biosphere Reserve, South Africa

Malherbe, Hanlie (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 ...
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)

Duvenhage, Andries J. (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. ...
Assessment of toxic baits for the control of ants (Hymenoptera : Formicidae) in South African vineyards

Nyamukondiwa, Casper (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 ...
Assessment of veld utilisation practices and veld condition in the Little Karoo

Cupido, Clement F. (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 ...
An assessment of water quality and endocrine disruption activities in the Eerste/Kuils River catchment system, Western Cape, South Africa

Fourie, Shani (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, ...
Attitudes and behaviour of landholders towards the conservation of Overberg Coastal Renosterveld, a threatened vegetation type in the Cape Floral Kingdom

Winter, Susan Jean (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 ...
Biodiversity enhancement in Cape Flats urban habitats

Faul, Andre Karel (Stellenbosch : University of Stellenbosch, 2005-12)

Biodiversity is under enormous pressure from an increasing human population. Urbanisation, agriculture, and mining are just some of the factors responsible for the continuous degradation of the natural environment. Of ...
Biodiversity value of grassland ecological networks in afforested areas, KwaZulu-Natal, South Africa

Joubert, Lize (Stellenbosch : University of Stellenbosch, 2011-03)

ENGLISH ABSTRACT: The current biodiversity crisis requires creative initiatives for mitigating further biodiversity loss. The use of ecological networks (ENs) is such an initiative. The South African forestry industry ...
The biogeomorphology associated with a keystone plant species in the sub-Antarctic

Haussmann, Natalie Suzette (Stellenbosch : University of Stellenbosch, 2011-03)

AFRIKAANSE OPSOMMING: Min aandag is al gegee aan biogeomorfologiese interaksies in glasiale en periglasiale omgewings. Nietemin is hierdie interaksies, wat op die skeidingsvlak tussen ekologie en geomorfologie fokus, baie ...
Biological and ecological factors contributing to the successful use of entomopathogenic nematodes (Rhabditida: Steinernematidae and Heterorhabditidae) for the control of codling moth, Cydia pomonella (L.) (Lepidoptera: Tortricidae) under South African conditions

De Waal, Jeanne Yvonne (Stellenbosch : Stellenbosch University, 2011-12)

ENGLISH ABSTRACT: Codling moth, Cydia pomonella (L.) (Lepidoptera: Tortricidae) is a devastating pest of pome fruit in temperate regions of the world. Control of this pest, previously involved the extensive use of ...
Biologie van die wingerdfilloksera Phylloxera vitifoliae (Fitch)(Homoptera: Phylloxeridae) in Suid-Afrika

De Klerk, C. A. (Christiaan Andreas) (Stellenbosch : Stellenbosch University, 1970)

AFRIKAANSE OPSOMMING: Verskeie aspekte van die biologie van die wingerdfilloksera is bestudeer. Die ondergrondse lewensiklus is in spesiale teelbakke waargeneem en die ontwikkelingstydperk van elke stadium word ...
Bionomics, behaviour and control of the codling moth, Cydia pomonella (L.) (Lepidoptera: Tortricidae), in pome fruit orchards in South Africa

Blomefield, Thomas Loftus (Stellenbosch : Stellenbosch University, 2003-03)

ENGLISH ABSTRACT: The codling moth, Cydia pomonella (L.) has been a major pest of pome fruits since before the turn of the last century. However, despite its high economic profile little is known about the bionomics and ...