Search
Now showing items 1-10 of 90
Prediction and ecotoxicological effects of runoff induced pesticide contamination in agricultural surface waters : a risk assessment using GIS and microcosms
(Stellenbosch : Stellenbosch University, 2001-12)
ENGLISH ABSTRACT: Runoff is generally regarded as one of the most important routes of nonpoint source
pesticide pollution in agricultural surface waters. Of major concern is the fact that
low, sub-lethal levels of pesticide ...
Phylogeography of the Cape girdled lizard, Cordylus cordylus : investigating biogeographic patterning in the Cape floristic region (CFR)
(Stellenbosch : Stellenbosch University, 2013-12)
ENGLISH ABSTRACT: In the present study I examined the phylogeography of the rupicolous Cape
girdled lizard, Cordylus cordylus. Samples were collected across the species
distribution range from 63 localities in the Eastern ...
The geometric tortoise (Psammobates geometricus) in a fragmented habitat along a national highway : status and mitigation
(Stellenbosch : Stellenbosch University, 2003-12)
ENGLISH ABSTRACT: The geometric tortoise, Psammobates geometricus, found in the Western Cape, South
Africa, is one of the world's rarest tortoises. At present, it is only known from five
isolated geographical areas, one ...
The influence of different management practices on soil faunal activity in vineyard soils
(Stellenbosch : Stellenbosch University, 2002-12)
ENGLISH ABSTRACT: Food demands for the ever-increasing human population is increasing the
pressure on the agricultural sector to produce more food. In order to satisfy these
demands, farmers are turning to chemical ...
Gene-flow in the rock hyrax (Procavia capensis) at different spatial scales
(Stellenbosch : Stellenbosch University, 2013-12)
ENGLISH ABSTRACT: Limited dispersal, territoriality and the occupation of patchy habitats; characters that typify most African rock-dwelling (saxicolous or rupicolous) species, often result in structured genetic patterns ...
The ability of terrestrial Oligochaeta to survive in ultramafic soils and the assessment of toxicity at different levels of organisation
(Stellenbosch : University of Stellenbosch, 2006-12)
Metals are natural elements of the earth crust usually present at low concentrations in all soils.
Although many metals such as cobalt, copper, iron and zinc are essential to living organisms, at
elevated concentrations ...
On the cloacal region of Anura in particular of larval Ascaphus
(Stellenbosch: University of Stellenbosch, 1959-12)
ENGLISH ABSTRACT: The ontogeny of the cloacal region of Ascaphus is described from limited
larval material (beginning approximately at the stage of hind-limb bud
development). A comprehensive series of Bufo angusticeps ...
Stress responses of Eisenia andrei and Enchytraeus doerjesi (Oligochaeta) to combined effects of temperature and metal contamination
(Stellenbosch : Stellenbosch University, 2011-03)
ENGLISH ABSTRACT: The terrestrial Oligochaete species Eisenia andrei and Enchytraeus doerjesi were
exposed to different concentration series of Cd and Zn, both separately and in
mixtures for 28 days in artificial OECD ...
The phylogeographic population structure of the Cape sea urchin, Parechinus angulosus
(Stellenbosch : Stellenbosch University, 2011-03)
ENGLISH ABSTRACT: South Africa's coastline is in the region of 3650kms and encompasses many different and dynamic marine environments. To enhance our current understanding of the population structure and gene flow patterns ...
Cellular responses to Cd, Pb and Zn in shrews (Myosorex varius and Crocidura flavescens) and BALB/c mice
(Stellenbosch : Stellenbosch University, 2000-12)
ENGLISH ABSTRACT: Shrews are excellent bioindicators of environmental heavy metal pollution. This is
due to their diets and the high rate of consumption at which these small mammals consume
their prey. Shrews feed mostly ...