Browsing POST-DOCTORAL RESEARCH OUTPUTS by Title
Now showing items 141-160 of 221
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Occurrence record of and possible invasion by scarlet sage (Salvia coccinea Buc’hoz ex Etl.) in South Africa
(2020)The scarlet sage, Salvia coccinea, was first detected in Northern Province, South Africa in 1905, in what is now Limpopo Province. However, its presence and suitability in South Africa remains undocumented. We conducted ... -
On the accuracy of conservation managers' beliefs and if they learn from evidence-based knowledge: A preliminary investigation
(Elsevier Ltd., 2013)Despite the significant impetus placed on the need for conservation managers to base their decisions on evidence-based findings, few studies have compared the accuracy of “evidence” versus experience-based knowledge. ... -
Operative temperature dataset in areas with native and invasive vegetation
Operative temperature data collected in both “native areas” (native renosterveld vegetation) and “invaded areas” (native renosterveld vegetation areas invaded by alien trees, mainly Acacia saligna). The data were collected ... -
Organismal complexity is an indicator of species existence value
(The Ecological Society of America, 2008) -
Origin of climatic data can determine the transferability of species distribution models
(2020)Methodological research on species distribution modelling (SDM) has so far largely focused on the choice of appropriate modelling algorithms and variable selection approaches, but the consequences of choosing amongst ... -
The origins of marine mites: Interpreting geographical and ecological patterns
(2007-03-28)Hypotheses are advanced concerning the origins of non-halacarid mites in the marine environment. The hypothesis that oribatid (ameronothroid) and astigmatid (hyadesioid) taxa have had longer marine associations than their ... -
An overview of the Cape geophytes
(The Linnean Society of London, 2006)The Cape Region (here treated as the winter rainfall region of southern Africa, thus including fynbos, renosterveld and succulent karoo vegetation) is the world’s foremost centre of geophyte diversity. Some 2100 species ... -
Pathways and gateways of freshwater invasions in Europe
(REABIC, 2015)Taking into account the continuous increase in freshwater introductions, and to support the recent European legislation on invasive alien species, the identification of priority pathways and gateways of introductions is ... -
Phenotypic plasticity in locomotor performance of a monophyletic group of weevils accords with the ‘warmer is better’ hypothesis
(The Company of Biologists Ltd, 2019)Ectotherms may respond to variable environmental conditions by altering their phenotypes. Phenotypic plasticity was initially thought to be beneficial to an organism’s physiological fitness but several alternative hypotheses ... -
Phenotypic variation in Xenopus laevis tadpoles from contrasting rainfall regimes is the result of adaptation and plasticity
Phenotypic variations between populations often correlate with climatic variables. Assessing the adaptation of a species’ populations from differing environments over a large spatial scale can provide insight into the ... -
Physiological responses to fluctuating thermal and hydration regimes in the chill susceptible insect, Thaumatotibia leucotreta
(Elsevier, 2013)Fluctuating thermal regimes (FTR), consisting of cycles between stressful low and benign temperatures, are known to improve survival and fecundity in a variety of insects. By contrast, fluctuating hydration regimes (FHR) ... -
Plant invasions along roads: a case study from central highlands, India
(Springer Science + Business Media B.V., 2009)Road sides provide suitable conditions for the establishment and growth of non-native species. The phenomenon of non-native species spread through roads has further increased due to rapid anthropogenic developments. Here ... -
Population density modifies the ecological impacts of invasive species
(Nordic Society Oikos, 2015)In assessments of ecological impact in invasion ecology, most studies compare un-invaded sites with highly invaded sites, representing the ‘worst-case scenario’, and so there is little information on how impact is modified ... -
Population genetics of Ceratitis capitata in South Africa: Implications for dispersal and pest management
(Public Library of Science, 2013)The invasive Mediterranean fruit fly (medfly), Ceratitis capitata, is one of the major agricultural and economical pests globally. Understanding invasion risk and mitigation of medfly in agricultural landscapes requires ... -
Population regulation of a classical biological control agent: larval density dependence in Neochetina eichhorniae (Coleoptera: Curculionidae), a biological control agent of water hyacinth Eichhornia crassipes
(2006)The release of classical biological control agents has reduced the economic, environmental and social problems caused by water hyacinth, Eichhornia crassipes; however, additional control measures are needed in some locations. ... -
Predation in the marine intertidal amphipod Echinogammarus marinus Leach: Implications of inter- and intra-individual variation
(Elsevier, 2015)Studies of competition, predator–prey dynamics and foodwebs typically consider conspecifics as equal, however, individuals from the same population that are seemingly identical can show considerable variation with regards ... -
Predator cue studies reveal strong trait-mediated effects in communities despite variation in experimental designs
(Elsevier, 2013)Nonconsumptive or trait-mediated effects of predators on their prey often outweigh density-mediated interactions where predators consume prey. For instance, predator presence can alter prey behaviour, physiology, morphology ... -
Predators vs. alien: differential biotic resistance to an invasive species by two resident predators
(Pensoft, 2013-10-11)The success of invading species can be restricted by interspecific interactions such as competition and predation (i.e. biotic resistance) from resident species, which may be natives or previous invaders. Whilst there are ...