Browsing POST-DOCTORAL RESEARCH OUTPUTS by Title
Now showing items 166-185 of 221
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Realizing a synergy between research and education: how participation in ant monitoring helps raise biodiversity awareness in a resource-poor country
(Springer Science+Business Media B.V., 2010)Biodiversity-rich, resource-poor countries need to allocate scarce resources to the competing goals of identifying and monitoring their biodiversity and educating their populace about it. Often only relatively wealthy ... -
Red-listed species impacted by aliens in South Africa
(2012-03-07)Red-listed species impacted by aliens in South Africa. Numbers of species impacted by aliens and numbers of species that are impacted by aliens that have changed risk categories between consecutive assessments. -
Reduced flower visitation by nectar-feeding birds in response to fire in Cape fynbos vegetation, South Africa
(Springer-Verlag, 2012)Nectar-feeding birds are important pollinators in fire-prone regions of the world, but the impact of fires on these bird communities has seldom been studied. Nectarfeeding bird communities were censused during ... -
Refining the process of agent selection through understanding plant demography and plant response to herbivory
(2006)Understanding plant demography and plant response to herbivory is critical to the selection of effective weed biological control agents. We adopt the metaphor of ‘filters’ to suggest how agent prioritisation may be improved ... -
The relative contributions of developmental plasticity and adult acclimation to physiological variation in the tsetse fly, Glossina pallidipes (Diptera, Glossinidae)
(2006)Recent reviews of the adaptive hypotheses for animal responses to acclimation have highlighted the importance of distinguishing between developmental and adult (non-developmental) phenotypic plasticity. However, little ... -
Repeated monitoring as an effective early detection means: first records of naturalised Solidago gigantea Aiton (Asteraceae) in southern Africa
(Elsevier B.V., 2014-07)Early detection of emerging invasive plants depends on maximizing the probability of detecting new populations. Repeated surveys along a gradient of environmental conditions or in areas exposed to high propagule pressure ... -
Reproductive ecology and diet of a persistent Ameiurus melas (Rafinesque, 1820) population in the UK
(Blackwell Verlag GmbH, 2015)The black bullhead Ameiurus melas was introduced to Europe from North America in the early 20th Century and invasive populations are now present in many European countries (Novomeska et al., 2013). Their invasion is ... -
Residence time and potential range: crucial considerations in modelling plant invasions
(2007)A prime aim of invasion biology is to predict which species will become invasive, but retrospective analyses have so far failed to develop robust generalizations. This is because many biological, environmental, and ... -
A revision of the Pyura stolonifera species complex (Tunicata, Ascidiacea), with a description of a new species from Australia
(Magnolia Press, 2011-02-01)Pyura stolonifera is a large solitary ascidian found in Africa, Australasia and South America. The taxonomic status of different populations of this species is disputed, especially since there is evidence for several ... -
Road avoidance and its energetic consequences for reptiles
(2019)Roads are one of the most widespread human-caused habitat modifications that can increase wildlife mortality rates and alter behavior. Roads can act as barriers with variable permeability to movement and can increase ... -
Road verges as invasion corridors? A spatial hierarchical test in an arid ecosystem
(Springer, 2008-02-14)Disturbed habitats are often swiftly colonized by alien plant species. Human inhabited areas may act as sources from which such aliens disperse, while road verges have been suggested as corridors facilitating their dispersal. ... -
The role of beetle marks and flower colour on visitation by monkey beetles (Hopliini) in the greater Cape floral region, South Africa
(Oxford University Press on behalf of the Annals of Botany Company, 2007)† Background and Aims A deviation from the classical beetle pollination syndrome of dull-coloured flowers with an unpleasant scent is found in the Greater Cape Floral Region of South Africa. Here, monkey beetles ... -
The role of invasive alien species in shaping local livelihoods and human well-being: A review
(Elsevier Ltd, 2019)Invasive alien species are a well-recognised driver of social-ecological change globally. Much research has focused on ecological impacts, but the role of invasive species for livelihoods and human well-being is less well ... -
Saving a tropical ecosystem from a destructive ant-scale (Pheidole megacephala, Pulvinaria urbicola) mutualism with support from a diverse natural enemy assemblage
(Springer Science+Business Media Dordrecht, 2013)Ants can disrupt the natural biological control of serious hemipteran pests by interfering with natural enemies, resulting in a change in ecosystem functioning. We focus here on interference by a highly invasive ant ... -
Searching for generality in the patterns of parasite abundance and distribution: Ectoparasites of a South African rodent, Rhabdomys pumilio
(Elsevier Publishers, 2009)We studied abundance and distribution of seven ectoparasite species (fleas Chiastopsylla rossi and Dynopsyllus ellobius, a louse Polyplax arvicanthis, mites Androlaelaps fahrenholzi and Laelaps giganteus and two ticks ... -
Secondary invasion after clearing invasive Acacia saligna in the South African fynbos
(Eslervier, 2019)It is often assumed that clearing invasive alien species will lead to the dissipation of their negative impacts and recovery of native plant diversity. However, this is often not the case because clearing of primary invasive ... -
Seed characteristics in Cacataceae: Useful diagnostic features for screening species for invasiveness?
(Elsevier B.V., 2016)Invasive alien species impose a wide range of negative impacts in invaded ecosystems. Management strategies aiming to minimize these impacts include measures to prevent the introduction of potentially invasive species, ... -
Seed density is more effective than multi-trait limiting similarity in controlling grassland resistance against plant invasions in mesocosms
(International Association for Vegetation Science, 2018)Question: Disturbed areas offer great opportunities for restoring native biodiversity,but they are also prone to invasion by alien plants. Following the limiting similarityhypothesis, we address the question of whether ... -
Selection on floral traits through male fertility in a natural plant population
(Springer Science+Business Media B.V., 2008)Most studies on selection in plants estimate female fitness components and neglect male mating success, although the latter might also be fundamental to understand adaptive evolution. Information from molecular genetic ... -
Selection on phenotypic plasticity of morphological traits in response to flooding and competition in the clonal shore plant Ranunculus reptans
(European Society for Evolutionary Biology, 2007)Adaptive evolution of phenotypic plasticity requires that plastic genotypeshave the highest global fitness. We studied selection by spatial heterogeneity of interspecific competition and flooding, and by temporal heterogeneity ...