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Identifying the fundamental differences between neonative and introduced species to inform research and management


21-22 Nov 2022

Lang EN Workshop language is English

Giovanni Vimercati, UNIFR
Anna Probert, UNIFR
Sven Bacher, UNIFR



Moritz M. Adam, University of Amsterdam (Netherlands)
Stefano Canessa, University of Bern (Switzerland)
Regan Early, University of Exeter (United Kingdom)
Franz Essl, University of Vienna (Austria)
Sonja Wipf, Swiss National Park (Switzerland)


Species that expand their range in response to human-induced environmental perturbations, for instance due to climate or land use change, have been recently termed neonatives. Neonative species differ, biogeographically, from both native species (i.e. species that are present in areas where they evolved or arrived by natural means) and introduced species (also called alien species). While introduced species have been un-/intentionally moved by humans into areas in which they did not naturally occur, neonative species have expanded their range via natural dispersal in response to anthropogenic environmental changes. As the phenomenon of species that expand their ranges seems to be increasing and it undisputed, it has still to be determined to which degree neonative species fundamentally differ from introduced species. In this workshop, we will bring together internationally leading experts in invasion biology and environmental sciences to highlight cutting-edge advances in the research of neonative and introduced species and illustrate their fundamental differences. We will also propose novel ways to investigate those differences and discuss their implications for management. During the event, the experts will:

  • present one or few relevant papers they recently authored concerning neonative/introduced species.
  • address (through breakout groups and full-group sessions with other experts and 12 doctoral students) specific research questions (see below) regarding neonative/introduced species and propose ways forward. 

Among others, the following questions will be addressed.
- Why is it important to distinguish between neonative and introduced species and what is the status of the debate regarding the "neonative" neologism?
- Are there fundamental differences in how biotic interactions (both positive and negative) affect neonative and introduced species?
- Do neonative and introduced species fundamentally differ in traits that determine their invasion success?
- Are neonative and introduced species differently represented across taxonomic or functional groups?
- Are ecological studies on neonative species more or less likely to encounter context-dependence than those regarding introduced species?
- Are neonative species more or less likely than introduced species to impact recipient ecosystems and human societies?
- Do neonative and introduced species require two distinct management frameworks/approaches?


21st of November 

9:00-9:30. Arrival, registration & coffee.

9.30-9.45. Setting the scene: Neonative and introduced species as distinct biogeographic phenomena

9.45-10.30. Two keynote presentations concerning: context-dependence, establishment & invasion success, impacts

10.30-12.00. Full-group and breakout group discussions

12-13.00 Lunch (HEIA Mensa)

13.00-15.00 Full-group and breakout group discussions (continued)

15.00-15.30 Coffee break 

15.30-16.15. Two keynote presentations concerning: pathways and dispersal

16.15-17.45. Full-group and breakout group discussions

17.45.-18.00 Short synthesis of the first day

19:00 Social dinner together, place TBD

22nd of November 

9.00-10.30 Full-group and breakout group discussions (continued)

10.30-11.00 Coffee break

11.00-12.00 Two keynote presentations concerning management and policy (+ short group discussion).

12-13.00 Lunch (HEIA Mensa)

13-15.30 Full-group and breakout group discussions 

15.30-17.30 Synthesis discussion + apero


University of Fribourg




Nov 21-22, 2022

University of FribourgPER23 room 0.05
Ch. Du Musée 15, 1700, Fribourg

Catherine Suarez
@: ecologie-evolution(at)cuso(dot)ch


Reimbursements for CUSO Students:
- Train ticket, 2nd class, half-fare from the main train station of your university location to the place of the activity.

NEW since 2021: Reimbursement of your travel costs can be asked online through your MyCUSO account.
See HERE for the procedure.

For any question regarding reimbursements please contact the CUSO EE coordinator Catherine Suarez at: ecologie-evolution(at) cuso(dot)ch.

Late cancellations (after 06.11.2022) or no-show: 100 CHF administrative fee


Registrations OPEN - 12 places

Registration deadline
Nov 6th, 2022 extended deadline: Nov 18

Free for PhD students of UNIFR, UNIGE, UNIL, UNIBE and UNINEOther participants: please contact the program coordinator at ecologie-evolution(at)

Late cancellations (after 06.11.2022) or no-show: 100 CHF administrative fee



Deadline for registration 18.11.2022
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