Browsing RESEARCH: Wilson, JRU by Title

National-scale strategic approaches for managing introduced plants: insights from Australian acacias in South Africa

van Wilgen, B.W.; Dyer, C.; Hoffmann, J.H.; Ivey, P.; Le Maitre, D.C.; Moore, J.L.; Richardson, D.M.; Rouget, M.; Wannenburgh, A.; Wilson, J.R.U. (Blackwell Publishing Ltd, 2011)

Aim A range of approaches and philosophies underpin national-level strategies for managing invasive alien plants. This study presents a strategy for the management of taxa that both have value and do harm. Location South ...

Native and naturalized range size in Pinus: Relative importance of biogeography, introduction effort and species traits

Procheş, Ş.; Wilson, J.R.U.; Richardson, D.M.; Rejmánek, M. (Blackwell Publishing, 2012)

Aim Pine trees (genus Pinus) represent an ancient lineage, naturally occurring almost exclusively in the Northern Hemisphere, but introduced and widely naturalized in both hemispheres. As large trees of interest to ...

Native range size and growth form in Cactaceae predict invasiveness and impact

Novoa, A.; Kumschick, S.; Richardson, D.M.; Rouget, M.; Wilson, J.R.U. (Pensoft, 2016)

Many recent studies in invasion science have identified species traits that determine either invasiveness or impact. Such analyses underpin risk assessments and attempts to prioritise management actions. However, the ...

A new national unit for invasive species detection, assessment and eradication planning

Wilson, J.R.U.; Ivey, P.; Manyama, P.; Nänni, I. (Academy of Science of South Africa, 2013)

Even with no new introductions, the number of biological invasions in South Africa will increase as introduced species naturalise and become invasive. As of 2010 South Africa had ~8750 introduced plant taxa, 660 recorded ...

Non-native species in urban environments: patterns, processes, impacts and challenges

Gaertner, M.; Wilson, J.R.U.; Cadotte, M.W.; MacIvor, J.S; Zenni, R.D.; Richardson, D.M. (Springer, 2017)

Although urban ecosystems are hotspots for biological invasions, the field of invasion science has given scant attention to invasion dynamics and the challenges facing managers in towns and cities. This paper provides ...

Nonrandom extinction leads to elevated loss of angiosperm evolutionary history

Vamosi, J.C.; Wilson, J.R.U. (Blackwell Publishing Ltd/CNRS, 2008)

The phylogenetic clustering of extinction may jeopardize the existence of entire families and genera, which can result in elevated reductions of evolutionary history (EH), trait diversity, and ecosystem functioning. Analyses ...

Organismal complexity is an indicator of species existence value

Wilson, J.R.U.; Proches, S.; Braschler, B.; Dixon, E.S.; Richardson, D.M. (The Ecological Society of America, 2008)

Ornamental plants as invasive aliens: problems and solutions in Kruger National Park, South Africa

Foxcroft, L.C.; Richardson, D.M.; Wilson, J.R.U. (Springer Science+Business Media, LLC, 2008)

The most widespread invasive alien plant species in South Africa’s Kruger National Park (KNP) were either introduced unintentionally along rivers and roads, or intentionally for use as ornamentals. We examine the spatial ...

Phylogeographic consequences of different introduction histories of invasive Australian Acacia species and Paraserianthes lophantha (Fabaceae) in South Africa

Le Roux, J.J.; Brown, G.K.; Byrne, M.; Ndlovu, J.; Richardson, D.M.; Thompson, G.D.; Wilson, J.R.U. (Blackwell Publishing Ltd, 2011)

Aim The genetic makeup and evolutionary potential of alien species can be profoundly influenced by their introduction history, but without detailed historical records, it can be difficult to ascertain the strength of ...

Plant diversity in the human diet: weak phylogenetic signal indicates breadth

Proches, S.; Wilson, J.R.U.; Vamosi, J.C.; Richardson, D.M. (American Institute of Biological Sciences, 2008-02)

Worldwide, humans have access to a greater range of food plants than does any other species. Examination of phylogenetic patterns in plants consumed by animals has recently uncovered important ecological processes. The ...

Plant invasions as a biogeographical assay: Vegetation biomes constrain the distribution of invasive alien species assemblages

Rouget, M.; Hui, C.; Renteria, J.; Richardson, D.M.; Wilson, J.R.U. (2015-10-26)

Plant assemblages define vegetation patterns at different scales, from plant communities at the scale of small plots to broad biomes. Species assemblages are traditionally investigated with a focus on native species, and ...

Plant invasions in South Africa: Insights from the 2017 National Status Report on Biological Invasions

Wilson, J.R.; Faulkner, K.; Henderson, L.; Munyai, T.; Rahlao, S.; Zengeya, T.; van Wilgen, B.W. (Elsevier, 2018)

The impacts of biological invasions are increasing and are felt by all sectors of society. The Department of Environmental Affairs currently invests over R1.5 billion a year on managing biological invasions, mostly on alien ...

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

Wilson, J.R.U.; Rees, M.; Ajuonu, O. (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. ...

Potential Futures of Biological Invasions in South Africa

Wilson, J.R.; Measey, J.; Richardson, D.M.; van Wilgen, B.W.; Zengeya, T.A. (2020)

Biological invasions are having a moderately negative impact on human livelihoods and the environment in South Africa, but the situation is worsening. Predicting future trends is fraught with many assumptions, so this ...

Potential impact and non-target effects of Gallerucida bifasciata (Coleoptera: Chrysomelidae), a candidate biological control agent for Fallopia japonica

Wang, Y.; Wilson, J.R.U.; Zhang, J.; Zhang, J.; Ding, J. (Elsevier, 2010)

A pre-release evaluation of a potential biological control agent is designed to estimate the impact the agent will have on the target in the introduced range, and whether the agent poses an acceptable level of risk to ...

Predicting the subspecific identity of invasive species using distribution models: Acacia saligna as an example

Thompson, G.D.; Robertson, M.P.; Webber, B.L.; Richardson, D.M.; Le Roux, J.J.; Wilson, J.R.U. (Blackwell Publishing Ltd, 2011)

Aim To explore whether the subspecific genetic entities of Acacia saligna occupy different bioclimatic niches in their native and introduced ranges and whether these niches are predictable using species distribution models ...

Prioritising potential incursions for contingency planning: pathways, species, and sites in Durban (eThekwini), South Africa as an example

Padayachee, A.L.; Proches, S.; Wilson, J.R.U. (Creative Commons Attribution License (CC BY 4.0), 2019)

Increased trade and travel have resulted in an increasing rate of introduction of biological organisms to new regions. Urban environments, such as cities, are hubs for human activities facilitating the introduction of alien ...