Université de Fribourg

Comparative feeding rates of native and invasive ascidians

Hoxha, Tedi ; Crookes, Steve ; Lejeusne, Christophe ; Dick, Jaimie T.A. ; Chang, Xuexiu ; Bouchemousse, Sarah ; N.Cuthbert, Ross ; Isaac, Hugh J.Mac

In: Marine Pollution Bulletin, 2018, vol. 135, p. 1067–1071

Ascidians have a recent history of species introductions globally, often with strong ecological impacts. Comparisons of per capita effects of invaders and comparable natives are useful to assess such impacts. Here, we explore ingestion rates (IR) and clearance rates (CR) of Ciona intestinalis and Ciona robusta, co-occurring native and non-native ascidians, respectively, from Brittany, France....

Université de Fribourg

Ecological impacts of alien species: quantification, scope, caveats, and recommendations

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

In: BioScience, 2015, vol. 65, no. 1, p. 55-63

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 managers on where limited resources should be allocated. This capacity has been limited partly by the context-dependent nature of ecological impacts, research highly skewed toward...

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...