Browsing Department of Conservation Ecology and Entomology by Title
Now showing items 1-20 of 363
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Accelerated microbial degradation of nematicides in vineyard and orchard soils
(South African Society for Enology and Viticulture, 2014-03)Accelerated microbial degradation (AMD) of organophosphate and carbamate nematicides is a phenomenon whereby biodegradation in the soil is increased, leading to a dramatically shortened persistence of nematicides. More ...
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Acoustic monitoring and response of katydids (Orthoptera: Tettigoniidae) to the landscape mosaic in a Biosphere Reserve
(Stellenbosch : Stellenbosch University, 2017-03)ENGLISH SUMMARY: A charismatic group within the Orthoptera, katydids can be found in a variety of habitat types world-wide due to their excellent bark and leaf mimicry skills. Most male katydids produce species-specific ...
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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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Adapting the Dragonfly Biotic Index to a katydid (Tettigoniidae) rapid assessment technique : case study of a biodiversity hotspot, the Cape Floristic Region, South Africa
(Pensoft Publishers, 2017)Global biodiversity faces many challenges, with the conservation of invertebrates among these. South Africa is megadiverse and has three global biodiversity hotspots. The country also employs two invertebrate-based rapid ...
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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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Applying a resilience approach to flood management in rapidly changing landscapes
(Stellenbosch : Stellenbosch University, 2016-12)ENGLISH ABSTRACT: Human land use activities have significantly changed the capacity of ecosystems to deliver essential service. Additional stresses brought about by climate change will require a shift in how ecosystems are ...
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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 chemical ecology and shelter-seaking behaviour of the grainchinch bug, Macchiademus diplopterus (hemiptera: lygaeidae) for optimisation of trapping during aestivation
(Stellenbosch : Stellenbosch University, 2016-12)ENGLISH ABSTRACT: The grain chinch bug (GCB), Macchiademus diplopterus (Distant) (Hemiptera: Lygaeidae) is a key quarantine pest of South African export fruit and is endemic to the Western Cape Province. The pest is ...
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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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An assessment of different beekeeping practices in South Africa based on their needs (bee forage use), services (pollination services) and threats (hive theft and vandalism)
(Stellenbosch : Stellenbosch University, 2017-03)ENGLISH ABSTRACT: Two honey bee subspecies indigenous to South Africa, Apis mellifera capensis Escholtz (Cape honey bee) and Apis mellifera scutellata Lepeletier, are actively managed by beekeepers for honey production, ...
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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 ...
