POST-DOCTORAL RESEARCH OUTPUTS
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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 ... -
Does the spatial sorting of dispersal traits affect the phenotype of the non-dispersing stages of the invasive frog Xenopus laevis through coupling?
In amphibians, spatial sorting progressively enhances the dispersal capacities of dispersing stages in expanding populations but may enhance or limit the performance of the earlier non-dispersing stages. Phenotypic traits ... -
Anti-predator strategies of the invasive African clawed frog, Xenopus laevis, to native and invasive predators in western France (dataset)
When species are translocated to a novel environment, individuals become exposed to new predators against which they may not express very efficient defences at least at an initial stage. The strength of anti-predator defence ... -
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 ... -
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 ... -
Identifying knowledge gaps in the research and management of invasive species in India
(2019)India, a megadiverse tropical country is grappling with the issue of biological invasions. As a signatory to the Convention on Biological Diversity, India is committed for managing its major biological invasions by 2020. ... -
Fine-scale invasion genetics of the quarantine pest, Anoplophora glabripennis, reconstructed in single outbreaks
(2019)The xylophagous cerambycid Anoplophora glabripennis, the Asian long-horned beetle (ALB), is highly polyphagous and can colonize a wide range of broadleaved host trees causing significant economic damage. For this reason, ... -
Leopard tortoise (Stigmochelys pardalis) road mortality and extralimital occurrence in Western Cape, South Africa
(2019)During field surveys in the Spring of 2018 we made two observations of Leopard Tortoises (Stigmochelys pardalis) on roadsides near Lambert's Bay, WC, South Africa. One was a deceased adult female, killed as a result of a ... -
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 ... -
Using network theory to understand and predict biological invasions
(2019)Understanding and predicting biological invasions is challenging because of the complexity of many interacting players. A holistic approach is needed with the potential to simultaneously consider all relevant effects and ... -
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 ... -
No survival of native larval frogs in the presence of invasive Indian bullfrog Hoplobatrachus tigerinus tadpoles
(Springer, 2019)Invasive amphibians have considerable negative impacts on recipient ecosystems, however, impact has been assessed for only a few species, limiting risk assessments. In particular, the impact of invasive anurans with ... -
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 ... -
Ghosts from the past: even comprehensive sampling of the native range may not be enough to unravel the introduction history of invasive species – the case of Acacia dealbata invasions in South Africa
(Botanical Society of America, 2019)PREMISE OF THE STUDY: Knowledge about the introduction history (source(s), number and size of introduction events) of an invasive species is a crucial prerequisite to understand invasion success and to facilitate effective ... -
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 ... -
Standards for distribution models in biodiversity assessments
(Creative Commons Attribution NonCommercial License 4.0, 2019)Demand for models in biodiversity assessments is rising, but which models are adequate for the task? We propose a set of best-practice standards and detailed guidelines enabling scoring of studies based on species distribution ... -
Using public surveys to reliably and rapidly estimate the distributions of multiple invasive species on the Andaman archipelago
(The Association for Tropical Biology and Conservation, 2018)To effectively manage multiple biological invasions, information on their distributions must be generated rapidly and over large spatial scales. Using public surveys in a false-positive occupancy framework, we reliably ...
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