Browsing POST-DOCTORAL: publications by Issue Date
Now showing items 1-20 of 169
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The world’s biogeographical regions: cluster analyses based on bat distributions
(Blackwell Publishing Ltd, 2005)Aim: Both floral kingdoms and faunal regions have so far been intuitively defined. This study was conducted to compare these with an analytical regionalization based on cluster analyses in a fairly homogeneous, globally ... -
Landscape corridors: Possible dangers?
(AMER ASSOC ADVANCEMENT SCIENCE, 2005-11-04) -
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 ... -
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. ... -
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 ... -
How much evolutionary history in a 10x10m plot?
(2006)We use a fully dated phylogenetic tree of the angiospermfamilies to calculate phylogenetic diversity (PD) in four South African vegetation types with distinct evolutionary histories. Since the branch length values are in ... -
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 ... -
Insect diversity in Cape fynbos and neighbouring South African vegetation
(Blackwell Publishing Ltd, 2006)Aim It has often been suggested that South Africa’s Cape fynbos shrublands, although extremely rich in plant species, are poor in insects, thus representing a notable exception from the broad plant–insect diversity ... -
Latitudinal and longitudinal barriers in global biogeography
(The Royal Society, 2006)Due to changes in climate and continental arrangement, plant and animal assemblages faced different dispersal barriers at different moments in Earth’s history. It is generally accepted that groups which diversified ... -
The (bio)diversity of science reflects the interests of society
(2007)For ecologists to develop robust generalizations and principles, a broad taxonomic and geographic spread of research is required, but, in practice, most generalizations are based on the research of individual scientists ... -
The effects of temperature, body mass and feeding on metabolic rate in the tsetse fly, Glossina morsitans centralis
(2007)Metabolic rate variation with temperature, body mass, gender and feeding status is documented for Glossina morsitans centralis . Metabolic rate [mean ± SE; VCO2 = 19.78 ± 3.11 uL CO 2 h −1 in males (mean mass = 22.72 ± ... -
Stage-related variation in rapid cold hardening as a test of the environmental predictability hypothesis
(2007)The environmental predictability (EP) hypothesis proposes that rapid cold hardening (RCH) might be common in temperate species incapable of surviving freezing events and which also dwell in unpredictable environments. The ... -
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 ... -
Inter-specific competitive stress does not affect the magnitude of inbreeding depression
(Yvonne Willi, 2007)Hypothesis: Stressful inter-specific competition enhances inbreeding depression. Organisms: Creeping spearwort (Ranunculus reptans L.) and its common competitor, the creeping bentgrass (Agrostis stolonifera L.). Field ... -
Variation in scorpion metabolic rate and rate–temperature relationships: implications for the fundamental equation of the metabolic theory of ecology
(Blackwell, 2007)The fundamental equation of the metabolic theory of ecology (MTE) indicates that most of the variation in metabolic rate are a consequence of variation in organismal size and environmental temperature. Although evolution ... -
Genetic rescue persists beyond first-generation outbreeding in small populations of a rare plant
(The Royal Society, 2007)Habitat fragmentation commonly causes genetic problems and reduced fitness when populations become small. Stocking small populations with individuals from other populations may enrich genetic variation and alleviate ... -
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 ... -
Thermal melanism in ectotherms: a review
(Elsevier, 2007)Whether melanism plays a significant role in thermoregulation has been a persistent question in studies of thermal biology of ectotherms. This review provides a synthesis of the thermal melanism hypothesis which states ... -
Invasive alien plants infiltrate bird-mediated shrub nucleation processes in arid savanna
(Blackwell, 2007)1 The cultivation and dissemination of alien ornamental plants increases their potential to invade. More specifically, species with bird-dispersed seeds can potentially infiltrate natural nucleation processes in ...