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Browsing by Author "Retief, Kirsten"

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Are foraging patterns of aerial predators influencing diurnal activity of their prey?

Author: Retief, Kirsten Date: 2011 There is often a reciprocal relationship between predators and their dominant prey. This results in continuous co-evolution, where the prey selects more efficient ways to avoid predation and the predator selects more efficient ways of catching ... Read more
Can stable isotopes and radiocarbon dating provide a forensic solution for curbing illegal harvesting of threatened cycads?

Author: Retief, Kirsten ; West, Adam G. ; Pfab, Michele F. Date: 17 Sep 2014 Cycads in South Africa are facing an extinction crisis due to the illegal extraction of plants from the wild. Proving wild origin of suspect ex situ cycads to the satisfaction of a court of law is difficult, limiting law enforcement efforts. ... Read more c b
Cycad forensics: tracing the origin of poached cycads using stable isotapes, trace element concentrations and radiocarbon dating techniques

Author: Retief, Kirsten Date: 2013 In South Africa, the greatest threat to cycad populations is the illegal removal of wild plants for landscaping purposes and collector's gardens, resulting in declining populations that are already threatened with extinction. Radiocarbon ... Read more
Influence of fire severity in fynbos plant communities and mode of regeneration in the southern Cape Peninsula

Author: Retief, Kirsten Date: 2011 Fire severity influences species diversity and alters species habitat requirements, therefore it is important to understand what effect severity has on fynbos communities. The smallest twig diameter of burnt skeletons was used as a severity ... Read more

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Browsing by Author "Retief, Kirsten"

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