• Defining the impact of non-native species 

      Jeschke, J.M.; Bacher, S.; Blackburn, T.M.; Dick, J.T.A.; Essl, F.; Evans, T.; Gaertner, M.; Hulme, P.E.; Kühn, I.; Mrugala, A.; Pergl, J.; Pyšek, P.; Rabitsch, W.; Ricciardi, A.; Richardson, D.M.; Sendek, A.; Vilá, M.; Winter, M.; Kumschick, S. (Wiley Periodicals, Inc. on behalf of the Society for Conservation Biology, 2014)
      Non-native species cause changes in the ecosystems to which they are introduced. These changes, or some of them, are usually termed impacts; they can be manifold and potentially damaging to ecosystems and biodiversity. ...
    • Determinants of data deficiency in the impacts of alien bird species. 

      Evans, T.; Pigot, A.; Kumschick, S.; Sekercioglu, C.H.; Blackburn, T.M. (John Wiley & Sons Ltd, 2018)
      To identify the factors that influence the availability of data on the negative impacts of alien bird species, in order to understand why more than 70% are currently classified as Data Deficient (DD) by the Environmental ...
    • Does origin determine environmental impacts? Not for bamboos 

      Canavan, S.; Kumschick, S.; Le Roux, J.J.; Richardson, D.M.; Wilson, J.R.U. (New Phytologist Trust, 2019)
      Societal Impact Statement: Non‐native species can cause considerable negative impacts in natural ecosystems. Such impacts often are directly due to the fact that these species occur in habitats where they did not evolve. ...
    • Ecological impacts of alien species: Quantification, scope, caveats, and recommendations 

      Kumschick, S.; Gaertner, M.; Vila, M.; Essl, F.; Jeschke, J.M.; Pysek, P.; Ricciardi, A.; Bacher, S.; Blackburn, T.M.; Dick, J.T.A.; Evans, T.; Hulme, P.E.; Kuhn, I.; Mrugala, A.; Pergl, J.; Rabitsch, W.; Richardson, D.M.; Sendek, A.; Winter, M. (Oxford University Press, 2015)
      Despite intensive research during the past decade on the effects of alien species, invasion science still lacks the capacity to accurately predict the impacts of those species and, therefore, to provide timely advice to ...
    • Emerging infectious diseases and biological invasions: a call for a One Health collaboration in science and management 

      Ogden, N.H.; Wilson, J.R.U.; Richardson, D.M.; Hui, C.; Davies, S.J.; Kumschick, S.; Le Roux, J.J.; Measey, J.; Saul, W.-C.; Pulliam, J.R.C. (The Royal Society Publishing, 2019)
      The study and management of emerging infectious diseases (EIDs) and of biological invasions both address the ecology of human-associated biological phenomena in a rapidly changing world. However, the two fields work mostly ...
    • A four-component classification of uncertainties in biological invasions: implications for management 

      Latombe, G.; Canavan, S.; Hirsch, H.; Hui, C.; Kumschick, S.; Nsikani, M.N.; Potgieter, L.J.; Robinson, T.B.; Saul, W.-C.; Turner, S.C.; Wilson, J.R.U.; Yannelli, F.A.; Richardson, D.M. (John Wiley & Sons, Inc, 2019)
      Although uncertainty is an integral part of any science, it raises doubts in public perception about scientific evidence, is exploited by denialists, and therefore potentially hinders the implementation of management ...
    • Framework and guidelines for implementing the proposed IUCN Environmental Impact Classification for Alien Taxa (EICAT) 

      Hawkins, C.L.; Bacher, S.; Essl, F.; Hulme, P.E.; Jeschke, J.M.; Kuhn, I.; Kumschick, S.; Nentwig, W.; Pergl, J.; Pysek, P.; Rabitsch, W.; Richardson, D.M.; Vila, M.; Wilson, J.R.U.; Genovesi, P.; Blackburn, T.M. (John Wiley & Sons Ltd, 2015)
      Recently, Blackburn et al. (2014) developed a simple, objective and transparent method for classifying alien taxa in terms of the magnitude of their detrimental environmental impacts in recipient areas. Here, we present a ...
    • A framework for engaging stakeholders on the management of alien species 

      Novoa, A.; Shackleton, R.; Canavan, S.; Cybele, C.; Davies, S.J.; Dehnen-Schmutz, K.; Fried, J.; Gaertner, M.; Geerts, S.; Griffiths, C.L.; Kaplan, H.; Kumschick, S.; Le Maitre, D.C.; Measey, G.J.; Nunes, A.L.; Richardson, D.M.; Robinson, T.B.; Touza, J.; Wilson, J.R.U. (Elsevier Ltd., 2018)
      Alien species can have major ecological and socioeconomic impacts in their novel ranges and so effective management actions are needed. However, management can be contentious and create conflicts, especially when stakeholders ...
    • Gastropods alien to South Africa cause severe environmental harm in their global alien ranges across habitats 

      Kesner, D.; Kumschick, S. (John Wiley & Sons Ltd, 2018)
      Alien gastropods have caused extensive harm to biodiversity and socioeconomic systems like agriculture and horticulture worldwide. For conservation and management purposes, information on impacts needs to be easily ...
    • The generic impact scoring system (GISS): a standardized tool to quantify the impacts of alien species. 

      Nentwig, W.; Bacher, S.; Pysek, P.; Vila, M.; Kumschick, S. (Springer, 2016)
      Alien species can exert negative environmental and socio-economic impacts. Therefore, administrations from different sectors are trying to prevent further introductions, stop the spread of established species, and apply ...
    • Global actions for managing cactus invasions 

      Novoa, A.; Brundu, G.; Day, M.D.; Deltoro, V.; Essl, F.; Foxcroft, L.C.; Fried, G.; Kaplan, H.; Kumschick, S.; Lloyd, S.; Marchante, E.; Marchante, H.; Paterson, I.D.; Pyšek, P.; Richardson, D.M.; Witt, A.; Zimmermann, H.G.; Wilson, J.R.U. (2019)
      The family Cactaceae Juss. contains some of the most widespread and damaging invasive alien plant species in the world, with Australia (39 species), South Africa (35) and Spain (24) being the main hotspots of invasion. The ...
    • A global assessment of alien amphibian impacts in a formal framework 

      Measey, G.J.; Vimercati, G.; de Villiers, F.A.; Mokhatla, M.; Davies, S.J.; Thorp, C.J.; Rebelo, A.D.; Kumschick, S. (John Wiley & Sons Ltd, 2016)
      Aims The environmental and socio-economic impacts of alien species need to be quantified in a way that makes impacts comparable. This allows managers to prioritize their control or removal based on impact scores that can ...
    • Global environmental and socio-economic impacts of selected alien grasses as a basis for ranking threats to South Africa 

      Nkuna, K.V.; Visser, V.; Wilson, J.R.U.; Kumschick, S. (Creative Commons CC-BY 4.0, 2018)
      Decisions to allocate management resources should be underpinned by estimates of the impacts of biological invasions that are comparable across species and locations. For the same reason, it is important to assess what ...
    • Grasses as invasive plants in South Africa revisited: patterns, pathways and management 

      Visser, V.; Wilson, J.R.U.; Canavan, K.; Canavan, S.; Fisher, L.; Le Maitre, D.; Nanni, I.; Mashau, C.; O'Connor, T.G.; Ivey, P.; Kumschick, S.; Richardson, D.M. (AOSIS, 2017)
      Background: In many countries around the world, the most damaging invasive plant species are grasses. However, the status of grass invasions in South Africa has not been documented recently. Objectives: To update Sue ...
    • How repeatable is the Environmental Impact Classification of Alien Taxa (EICAT)? Comparing independent global impact assessments of amphibians 

      Kumschick, S.; Measey, G.J.; Vimercati, G.; de Villiers, F.A.; Mokhatla, M.M.; Davies, S.J.; Thorp, C.J.; Rebelo, A.D.; Blackburn, T.M.; Kraus, F. (John Wiley & Sons Ltd., 2017)
      The magnitude of impacts some alien species cause to native environments makes them targets for regulation and management. However, which species to target is not always clear, and comparisons of a wide variety of impacts ...
    • Identifying the factors that determine the severity and type of alien bird impacts 

      Evans, T.; Kumschick, S.; Sekercioglu, C.H.; Blackburn, T.M. (John Wiley & Sons Ltd, 2018)
      Aim: To identify traits related to the severity and type of environmental impacts generated by alien bird species, in order to improve our ability to predict which species may have the most damaging impacts. Location: ...
    • Impact assessment with different scoring tools; How well do alien amphibian assessments match? 

      Kumschick, S.; Vimercati, G.; de Villiers, F.A.; Mokhatla, M.M.; Davies, S.J.; Thorp, C.J.; Rebelo, A.D.; Measey, G.J. (Pensoft Publishers, 2017)
      Classification of alien species’ impacts can aid policy making through evidence based listing and management recommendations. We highlight differences and a number of potential difficulties with two scoring tools, the ...
    • Intentionally introduced terrestrial invertebrates: patterns, risks, and options for management 

      Kumschick, S.; Devenish, A.; Kenis, M.; Rabitsch, W.; Richardson, D.M.; Wilson, J.R.U. (2016-04-21)
      Our understanding and management of pathways of alien species introductions has improved significantly in the past few years. However, little attention has been paid in most parts of the world to the risks posed by the ...
    • Managing alien bird species: Time to move beyond “100 of the worst” lists? 

      Kumschick, S.; Blackburn, T.M.; Richardson, D.M. (Cambridge University Press, 2016)
      Alien species can cause severe impacts in their introduced ranges and management is challenging due to the large number of such species and the diverse nature and context of their impacts. Lists of the most harmful species, ...
    • Methods and approaches for the management of arthropod border incursions 

      Saccagi, D.L.; Karsten, M.; Robertson, M.P.; Kumschick, S.; Somers, M.J.; Wilson, J.R.U.; Terblanche, J.S. (Springer, 2016)
      Biological invasions are increasing and are strongly associated with negative agricultural, economic and ecological impacts. It is increasingly recognized that the primary focus in minimizing biological invasions should ...