Now showing items 31-40 of 203
The relative contributions of developmental plasticity and adult acclimation to physiological variation in the tsetse fly, Glossina pallidipes (Diptera, Glossinidae)
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 ...
Stage-related variation in rapid cold hardening as a test of the environmental predictability hypothesis
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 ...
Insect thermal tolerance: what is the role of ontogeny, ageing and senescence?
(Cambridge Philosophical Society, 2008)
Temperature has dramatic evolutionary fitness consequences and is therefore a major factor determining the geographic distribution and abundance of ectotherms. However, the role that age might have on insect thermal tolerance ...
Adaptive rather than non-adaptive evolution of Mimulus guttatus in its invasive range
(Elsevier GmbH, 2008)
Adaptive and non-adaptive evolutionary processes are likely to play important roles in biological invasions but their relative importance has hardly ever been quantified. Moreover, although genetic differences between ...
Variation in scorpion metabolic rate and rate–temperature relationships: implications for the fundamental equation of the metabolic theory of ecology
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 ...
Road verges as invasion corridors? A spatial hierarchical test in an arid ecosystem
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. ...
Karoo road verge study: Plot level sample data
File belonging to Kalwij et al 2008. This is a multivariate dataset at the plot level (n=240) whereby the Braun-Blanquet cover estimation of exotic species is listed for each plot. In addition a sheet with environmental ...
Karoo road verge study: Transect level sample data
Transect level data belonging to Kalwij et al. 2008. This dataset contains the Braun-Blanquet cover estimation of the 720 transects and their environmental data