Université de Fribourg

Scientific and normative foundations for the valuation of alien-species impacts: thirteen core principles

Essl, Franz ; Hulme, Philip E. ; Jeschke, Jonathan M. ; Keller, Reuben ; Pyšek, Petr ; Richardson, David M. ; Saul, Wolf-Christian ; Bacher, Sven ; Dullinger, Stefan ; Estévez, Rodrigo A. ; Kueffer, Christoph ; Roy, Helen E. ; Seebens, Hanno ; Rabitsch, Wolfgang

In: BioScience, 2017, vol. 67, no. 2, p. 166–178

Biological invasions cause many impacts that differ widely in how they are perceived. We argue that many conflicts in the valuation of the impacts of alien species are attributable to differences in the framing of the issue and implicit assumptions—such conflicts are often not acknowledged. We present 13 principles that can help guide valuation and therefore inform the management of alien...

Université de Fribourg

Troubling travellers: are ecologically harmful alien species associated with particular introduction pathways?

Pergl, Jan ; Pyšek, Petr ; Bacher, Sven ; Essl, Franz ; Genovesi, Piero ; Harrower, Colin A. ; Hulme, Philip E. ; Jeschke, Jonathan M. ; Kenis, Marc ; Kühn, Ingolf ; Perglová, Irena ; Rabitsch, Wolfgang ; Roques, Alain ; Roy, David B. ; Roy, Helen E. ; Vilà, Montserrat ; Winter, Marten ; Nentwig, Wolfgang

In: NeoBiota, 2017, vol. 32, p. 1–20

Prioritization of introduction pathways is seen as an important component of the management of biological invasions. We address whether established alien plants, mammals, freshwater fish and terrestrial invertebrates with known ecological impacts are associated with particular introduction pathways (release, escape, contaminant, stowaway, corridor and unaided). We used the information from...

Université de Fribourg

Framework and guidelines for implementing the proposed IUCN Environmental Impact Classification for Alien Taxa (EICAT)

Hawkins, Charlotte L. ; Bacher, Sven ; Essl, Franz ; Hulme, Philip E. ; Jeschke, Jonathan M. ; Kühn, Ingolf ; Kumschick, Sabrina ; Nentwig, Wolfgang ; Pergl, Jan ; Pyšek, Petr ; Rabitsch, Wolfgang ; Richardson, David M. ; Vilà, Montserrat ; Wilson, John R.U. ; Genovesi, Piero ; Blackburn, Tim M.

In: Diversity and Distributions, 2015, vol. 21, no. 11, p. 1360–1363

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 comprehensive framework and guidelines for implementing this method, which we term the Environmental Impact Classification for Alien Taxa, or EICAT. We detail criteria for...

Université de Fribourg

A unified classification of alien species based on the magnitude of their environmental impacts

Blackburn, Tim M. ; Essl, Franz ; Evans, Thomas ; Hulme, Philip E. ; Jeschke, Jonathan M. ; Kühn, Ingolf ; Kumschick, Sabrina ; Marková, Zuzana ; Mrugała, Agata ; Nentwig, Wolfgang ; Pergl, Jan ; Pyšek, Petr ; Rabitsch, Wolfgang ; Ricciardi, Anthony ; Richardson, David M. ; Sendek, Agnieszka ; Vilà, Montserrat ; Wilson, John R. U. ; Winte, Marten ; Genovesi, Piero ; Bacher, Sven

In: PLoS Biol, 2014, vol. 12, no. 5, p. e1001850

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; however, their impacts vary greatly across species and the ecosystems into which they are introduced. There is therefore a critical need for a standardised method to evaluate,...

Université de Fribourg

Defining the Impact of Non-Native Species

Jeschke, Jonathan M. ; Bacher, Sven ; Blackburn, Tim M. ; Dick, Jaimie T.A. ; Essl, Franz ; Evans, Thomas ; Gaertner, Mirijam ; Hulme, Philip E. ; Kühn, Ingolf ; MrugałA, Agata ; Pergl, Jan ; Pyšek, Petr ; Rabitsch, Wolfgang ; Ricciardi, Anthony ; Richardson, David M. ; Sendek, Agnieszka ; Vilà, Montserrat ; Winter, Marten ; Kumschick, Sabrina

In: Conservation Biology, 2014, p. -

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. However, the impacts of most non-native species are poorly understood, and a synthesis of available information is being hindered because authors often do not clearly define...