Author |
Pérez-Granados, C.; Lenzner, B.; Golivets, M.
; Saul, W.-C.; Jeschke, J.M.; Essl, F.; Peterson, G.D.; Rutting, L.; Latombe, G.; Adriaens, T.; Aldridge, D.C.; Bacher, S.; Bernardo-Madrid, R.; Brotons, L.; Díaz, F.; Gallardo, B.; Genovesi, P.; González-Moreno, P.; Kühn, I.
; Kutleša, P.; Leung, B.; Liu, C.; Pagitz, K.; Pastor, T.; Pauchard, A.; Rabitsch, W.; Robertson, P.; Roy, H.E.; Seebens, H.; Solarz, W.; Starfinger, U.; Tanner, R.; Vilà, M.; Roura-Pascual, N. |
Abstract |
- Invasive alien species are one of the major threats
to global biodiversity, ecosystem integrity, nature's contributions to
people and human health. While scenarios about potential future
developments have been available for other global change drivers for
quite some time, we largely lack an understanding of how biological
invasions might unfold in the future across spatial scales.
- Based on previous work on global invasion scenarios,
we developed a workflow to downscale global scenarios to a regional and
policy-relevant context. We applied this workflow at the European scale
to create four European scenarios of biological invasions until 2050
that consider different environmental, socio-economic and socio-cultural
trajectories, namely the European Alien Species Narratives (Eur-ASNs).
- We compared the Eur-ASNs with their previously
published global counterparts (Global-ASNs), assessing changes in 26
scenario variables. This assessment showed a high consistency between
global and European scenarios in the logic and assumptions of the
scenario variables. However, several discrepancies in scenario variable
trends were detected that could be attributed to scale differences. This
suggests that the workflow is able to capture scale-dependent
differences across scenarios.
- We also compared the Global- and Eur-ASNs with the
widely used Global and European Shared Socioeconomic Pathways (SSPs), a
set of scenarios developed in the context of climate change to capture
different future socio-economic trends. Our comparison showed
considerable divergences in the scenario space occupied by the different
scenarios, with overall larger differences between the ASNs and SSPs
than across scales (global vs. European) within the scenario
initiatives.
- Given the differences between the ASNs and SSPs, it
seems that the SSPs do not adequately capture the scenario space
relevant to understanding the complex future of biological invasions.
This underlines the importance of developing independent but
complementary scenarios focussed on biological invasions. The
downscaling workflow we implemented and presented here provides a tool
to develop such scenarios across different regions and contexts. This is
a major step towards an improved understanding of all major drivers of
global change, including biological invasions.
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Pérez-Granados, C., Lenzner, B., Golivets, M., Saul, W.-C., Jeschke, J.M., Essl, F., Peterson, G.D., Rutting, L., Latombe, G., Adriaens, T., Aldridge, D.C., Bacher, S., Bernardo-Madrid, R., Brotons, L., Díaz, F., Gallardo, B., Genovesi, P., González-Moreno, P., Kühn, I., Kutleša, P., Leung, B., Liu, C., Pagitz, K., Pastor, T., Pauchard, A., Rabitsch, W., Robertson, P., Roy, H.E., Seebens, H., Solarz, W., Starfinger, U., Tanner, R., Vilà, M., Roura-Pascual, N. (2024):
European scenarios for future biological invasions
People Nat. 6 (1), 245 - 259 10.1002/pan3.10567 |