• 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. ...
    • Comparing determinants of alien bird impacts across two continents: implications for risk assessment and management 

      Evans, T.; Kumschick, S.; Dyer, E.; Blackburn, T. (John Wiley & Sons Ltd, 2014)
      Invasive alien species can have serious adverse impacts on both the environment and the economy. Being able to predict the impacts of an alien species could assist in preventing or reducing these impacts. This study aimed ...
    • Advancing impact prediction and hypothesis testing in invasion ecology using a comparative functional response approach 

      Dick, J.T.A.; Alexander, M.E.; Jeschke, J.M.; Ricciardi, A.; MacIsaac, H.J.; Robinson, T.B.; Kumschick, S.; Weyl, O.L.F.; Dunn, A.M.; Hatcher, M.J.; Paterson, R.A.; Farnsworth, K.D.; Richardson, D.M. (Springer, 2014-04)
      Invasion ecology urgently requires predictive methodologies that can forecast the ecological impacts of existing, emerging and potential invasive species. We argue that many ecologically damaging invaders are characterised ...
    • A unified classification on alien species based on the magnitude of their environmental impacts 

      Blackburn, T.M.; Essl, F.; Evans, T.; Hulme, P.E.; Jeschke, J.M.; Kuhn, I.; Kumschick, S.; Markova, Z.; Mrugala, A.; Nentwig, W.; Pergl, J.; Pysek, P.; Rabitsch, W.; Ricciardi, A.; Richardson, D.M.; Sendek, A.; Vila, M.; Wilson, J.R.U.; Winter, M.; Genovesi, P.; Bacher, S. (Public Library of Science, 2014-05-06)
      Species moved by human activities beyond the limits of their native geographic ranges into areas in which they do not naturally occur (termed aliens) can cause a broad range of significant changes to recipient ecosystems; ...
    • 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 ...
    • Crossing frontiers in tackling pathways of biological invasions 

      Essl, F.; Bacher, S.; Blackburn, T.M.; Booy, O.; Brundu, G.; Brunel, S.; Cardoso, A.C.; Eschen, R.; Gallardo, B.; Galil, B.; Garcia-Berthou, E.; Genovesi, P.; Groom, Q.; Harrower, C.; Hulme, P.E.; Katsanevakis, S.; Kenis, M.; Kuhn, I.; Kumschick, S.; Martinou, A.F.; Nentwig, W.; O'Flynn, C.; Pagad, S.; Pergl, J.; Pysek, P.; Rabitsch, W.; Richardson, D.M.; Roques, A.; Roy, H.E.; Scalera, R.; Schindler, S.; Seebens, H.; Vanderhoeven, S.; Vila, M.; Wilson, J.R.U.; Zenetos, A.; Jeschke, J.M. (Oxford University Press, 2015)
      Substantial progress has been made in understanding how pathways underlie and mediate biological invasions. However, key features of their role in invasions remain poorly understood, available knowledge is widely scattered, ...
    • 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 ...
    • Soft touch or heavy hand? Legislative approaches for preventing invasions: insights from cacti in South Africa 

      Novoa, A.; Kaplan, H.; Kumschick, S.; Wilson, J.R.U.; Richardson, D.M. (Weeds Science Society of America, 2015)
      The rate of transportation, introduction, dissemination and spread of non-native species is increasing despite growing global awareness of the extent and impact of biological invasions. Effective policies are needed to ...
    • Comparing impacts of alien plants and animals in Europe using a standard scoring system 

      Kumschick, S.; Bacher, S.; Evans, T.; Markova, Z.; Pergl, J.; Pysek, P.; Vaes-Petignat, S.; van der Veer, G.; Villa, M.; Nentwig, W. (British Ecological Society, 2015-06)
      1. Alien species can change the recipient environment in various ways, and some of them cause considerable damage. Understanding such impacts is crucial to direct management actions. This study addresses the following ...
    • Application of the Environmental Impact Classification for Alien Taxa (EICAT) to a global assessment of alien bird impacts 

      Evans, T.; Kumschick, S.; Blackburn, T.M. (John Wiley & Sons Ltd, 2016)
      Aim To apply the recently published EICAT protocol to an assessment of the magnitude of environmental impacts of alien bird species established worldwide. Location Global. Methods A review of published literature and ...
    • 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 ...
    • 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 ...
    • 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, ...
    • 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 ...
    • Weed risk assessments are an effective component of invasion risk management 

      Gordon, D.R.; Flory, S.L.; Lieurance, D.; Hulme, P.E.; Buddenhagen, C.; Caton, B.; Champion, P.D.; Culley, T.M.; Daehler, C.; Essl, F.; Hill, J.E.; Keller, R.P.; Kohl, L.; Koop, A.L.; Kumschick, S.; Lodge, D.M.; Mack, R.N.; Meyerson, L.A.; Pallipparambil, G.R.; Panetta, F.D.; Porter, R.; Pysek, P.; Quinn, L.D.; Richardson, D.M.; Simberloff, D.; Vila, M. (Wees Science Society of America(WSSA), 2016)
    • 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 ...
    • 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 ...
    • 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 ...
    • 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 ...
    • 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 ...