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Research article - Peer-reviewed, 2023

Long-term trends in crayfish invasions across European rivers

Soto, Ismael; Ahmed, Danish A.; Beidas, Ayah; Oficialdegui, Francisco J.; Tricarico, Elena; Angeler, David G.; Amatulli, Giuseppe; Briski, Elizabeta; Datry, Thibault; Dohet, Alain; Domisch, Sami; England, Judy; Feio, Maria J.; Forcellini, Maxence; Johnson, Richard K.; Jones, J. Iwan; Larranaga, Aitor; L'Hoste, Lionel; Murphy, John F.; Schaefer, Ralf B.;
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Europe has experienced a substantial increase in non-indigenous crayfish species (NICS) since the mid-20th century due to their extensive use in fisheries, aquaculture and, more recently, pet trade. Despite relatively long invasion histories of some NICS and negative impacts on biodiversity and ecosystem functioning, large spatio-temporal analyses of their occurrences are lacking. Here, we used a large freshwater macroinvertebrate database to evaluate what information on NICS can be obtained from widely applied biomonitoring approaches and how usable such data is for descriptions of trends in identified NICS species. We found 160 time-series containing NICS between 1983 and 2019, to infer temporal patterns and environmental drivers of species and region-specific trends. Using a combination of metaregression and generalized linear models, we found no significant temporal trend for the abundance of any species (Procambarus clarkii, Pacifastacus leniusculus or Faxonius limosus) at the European scale, but identified species-specific predictors of abundances. While analysis of the spatial range expansion of NICS was positive (i.e. increasing spread) in England and negative (significant retreat) in northern Spain, no trend was detected in Hungary and the DutchGerman-Luxembourg region. The average invasion velocity varied among countries, ranging from 30 km/year in with declines being fastest in the Dutch-German-Luxembourg region, and much slower in England. Considering that NICS pose a substantial threat to aquatic biodiversity across Europe, our study highlights the utility and importance


Biological invasion; Biomonitoring; Non-native species; Time series; Freshwater decapod; Sampling method

Published in

Science of the Total Environment
2023, volume: 867, article number: 161537
Publisher: ELSEVIER

Authors' information

Soto, Ismael
University of South Bohemia Ceske Budejovice
Ahmed, Danish A.
Gulf University for Science and Technology (GUST)
Beidas, Ayah
Gulf University for Science and Technology (GUST)
Oficialdegui, Francisco J.
University of Murcia
Tricarico, Elena
University of Florence
University of Nebraska-Lincoln
Swedish University of Agricultural Sciences, Department of Aquatic Sciences and Assessment
Deakin University
The PRODEO Institute
Amatulli, Giuseppe
Yale University
Datry, Thibault
Dohet, Alain
Luxembourg Institute of Science and Technology
Domisch, Sami
Leibniz Institut fur Gewasserokologie und Binnenfischerei (IGB)
England, Judy
Environm Agcy
Feio, Maria J.
Universidade de Coimbra
Forcellini, Maxence
Swedish University of Agricultural Sciences, Department of Aquatic Sciences and Assessment
Jones, J. Iwan
Queen Mary University London
Larranaga, Aitor
University of Basque Country
L'Hoste, Lionel
Luxembourg Institute of Science and Technology
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Sustainable Development Goals

SDG15 Life on land
SDG14 Life below water

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