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

Pergl, Jan; Pyšek, Petr; Bacher, Sven; Essl, Franz; Genovesi, Piero; Harrower, Colin; 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

doi:10.3897/neobiota.32.10199

Cited by 67 publications

(79 citation statements)

References 75 publications

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“…Both these patterns are consistent with already established aliens (DAISIE, ) and not surprising since many of the alien plants are anticipated to arrive as escapes from horticulture (Saul et al., ). Pathways within the stowaway categories are considered likely to increase in importance in terms of species introductions compared to the past (Chapman et al., ; Zieritz et al., ); this is particularly the case for marine species, but also for terrestrial invertebrates, and highlights the importance of increasing surveillance of transport vectors (Hulme, ; Saul et al., ; Pergl et al., ) and implementation of preventative measures. For example, the highly invasive fire ant, Solenopsis invicta , is likely to arrive as a stowaway in packaging (Inoue & Goka, ).…”

Section: Discussionmentioning

confidence: 99%

Developing a list of invasive alien species likely to threaten biodiversity and ecosystems in the European Union

Roy

Bacher

Essl

et al. 2018

Global Change Biology

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The European Union (EU) has recently published its first list of invasive alien species (IAS) of EU concern to which current legislation must apply. The list comprises species known to pose great threats to biodiversity and needs to be maintained and updated. Horizon scanning is seen as critical to identify the most threatening potential IAS that do not yet occur in Europe to be subsequently risk assessed for future listing. Accordingly, we present a systematic consensus horizon scanning procedure to derive a ranked list of potential IAS likely to arrive, establish, spread and have an impact on biodiversity in the region over the next decade. The approach is unique in the continental scale examined, the breadth of taxonomic groups and environments considered, and the methods and data sources used. International experts were brought together to address five broad thematic groups of potential IAS. For each thematic group the experts first independently assembled lists of potential IAS not yet established in the EU but potentially threatening biodiversity if introduced. Experts were asked to score the species within their thematic group for their separate likelihoods of i) arrival, ii) establishment, iii) spread, and iv) magnitude of the potential negative impact on biodiversity within the EU. Experts then convened for a 2‐day workshop applying consensus methods to compile a ranked list of potential IAS. From an initial working list of 329 species, a list of 66 species not yet established in the EU that were considered to be very high (8 species), high (40 species) or medium (18 species) risk species was derived. Here, we present these species highlighting the potential negative impacts and the most likely biogeographic regions to be affected by these potential IAS.

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Section: Discussionmentioning

confidence: 99%

Developing a list of invasive alien species likely to threaten biodiversity and ecosystems in the European Union

Roy

Bacher

Essl

et al. 2018

Global Change Biology

Self Cite

142

139

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“…The continuous grid for each pathway was then converted into a binary grid (1 or 0) using the 75th percentile as a threshold (process 2b in Figure ), where grid cells with a value of one represent sites where an alien species could be introduced through the pathway. Some alien species can be introduced through multiple pathways (Essl et al, ; Foxcroft, Spear, van Wilgen, & McGeoch, ; Pergl et al, ). Using the information collected on the species’ pathways of introduction (section 1 of Figure ), we identified all of the pathways that had previously facilitated the introduction of each species to parts of the world where it is not native.…”

Section: Methodsmentioning

confidence: 99%

Stronger regional biosecurity is essential to prevent hundreds of harmful biological invasions

Faulkner

Robertson

Wilson

2020

Global Change Biology

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Biological invasions often transcend political boundaries, but the capacity of countries to prevent invasions varies. How this variation in biosecurity affects the invasion risks posed to the countries involved is unclear. We aimed to improve the understanding of how the biosecurity of a country influences that of its neighbours. We developed six scenarios that describe biological invasions in regions with contiguous countries. Using data from alien species databases, socio‐economic and biodiversity data and species distribution models, we determined where 86 of 100 of the world's worst invasive species are likely to invade and have a negative impact in the future. Information on the capacity of countries to prevent invasions was used to determine whether such invasions could be avoided. For the selected species, we predicted 2,523 discrete invasions, most of which would have significant negative impacts and are unlikely to be prevented. Of these invasions, approximately a third were predicted to spread from the country in which the species first establishes to neighbouring countries where they would cause significant negative impacts. Most of these invasions are unlikely to be prevented as the country of first establishment has a low capacity to prevent invasions or has little incentive to do so as there will be no impact in that country. Regional biosecurity is therefore essential to prevent future harmful biological invasions. In consequence, we propose that the need for increased regional co‐operation to combat biological invasions be incorporated in global biodiversity targets.

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“…The EASIN Geodatabase has been used to support scientific research on biological invasions, addressing (a) distribution patterns (Katsanevakis et al, 2013b,c), (b) pathways and gateways of introduction (Katsanevakis et al, 2013cNunes et al, 2014Nunes et al, , 2015Essl et al, 2015;Roques, 2015;Pergl et al, 2017;Tsiamis et al, 2017a), (c) risk and impact assessments of invasive species Perdikaris et al, 2016), and (d) Horizon Scanning exercises (Roy et al, 2015). European Alien Species Information Network constitutes the core information system supporting MS in the implementation of the IAS Regulation (EU, 2014, Art.…”

Section: Impact Of the Easin Geodatabasementioning

confidence: 99%

Handling Big Data of Alien Species in Europe: The European Alien Species Information Network Geodatabase

et al. 2017

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Building and managing large datasets of alien species is crucial to research, management, and control of biological invasions. To this end, the European Alien Species Information Network (EASIN) platform aggregates, integrates, and harmonizes spatio-temporal data regarding alien species in Europe, including both invasive and non-invasive alien species. These data are stored in the EASIN Geodatabase after their harvesting from relevant sources in the frame of a global and European databases partnership and scientific literature. The ownership of the data remains with its source, which is properly cited and linked. The process of data harvesting is performed through the EASIN Data Broker system, which retrieves the information related to alien species data in Europe and stores them in a normalized database structure. Data are subsequently refined through validation, cleansing, and standardization processes and finally stored in the EASIN Geodatabase. All data are finally visualized and shown in occurrence maps at different levels of spatial visualization. Analysis of the data contained in the EASIN Geodatabase through flexible web services offered by the system has already provided useful input in scientific works and policies on biological invasions.

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

Cited by 67 publications

References 75 publications

Developing a list of invasive alien species likely to threaten biodiversity and ecosystems in the European Union

Developing a list of invasive alien species likely to threaten biodiversity and ecosystems in the European Union

Stronger regional biosecurity is essential to prevent hundreds of harmful biological invasions

Handling Big Data of Alien Species in Europe: The European Alien Species Information Network Geodatabase

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