Browsing POST-DOCTORAL RESEARCH OUTPUTS by Title
Now showing items 138-157 of 209
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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 ... -
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 ... -
Predicting the ecological impacts of a new freshwater invader: functional responses and prey selectivity of the ‘killer shrimp’, Dikerogammarus villosus, compared to the native Gammarus pulex
(John Wiley & Sons Ltd, 2014)1. The ability to predict the likely ecological impacts of invasive species in fresh waters is a pressing research requirement. Whilst comparisons of species traits and considerations of invasion history have some efficacy ... -
Preserving the evolutionary potential of floras in biodiversity hotspots
(Nature Publishing Group, 2007)One of the biggest challenges for conservation biology is to provide conservation planners with ways to prioritize effort. Much attention has been focused on biodiversity hotspots1. However, the conservation of evolutionary ... -
Preventing plant invasions at early stages of revegetation: The role of limiting similarity in seed size and seed density
(Elsevier B.V., 2017)Revegetation of roadsides is an opportunity for grassland restoration, yet these habitats are prone to be colonised by invasive alien plant species (IAS). Therefore, the selection of seed mixtures for revegetation should ... -
Prioritising pathways of unintentional introduction and spread of invasive alien species in Germany
(2018)To implement Regulation (EU) No 1143/2014, the most important pathways of unintentional introduction and spread of invasive alien species of Union concern in Germany need to be identified. Based on the standardised pathway ... -
Propagules collected from Marion Island expeditioners
(2011-09-01)This data set examines the seeds in the clothing of expeditioners returning from Marion Island -
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 ...