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1. The harlequin ladybird, Harmonia axyridis: global perspectives on invasion history and ecology

Author

Roy, Helen E., Brown, Peter M. J., Adriaens, Tim, Berkvens, Nick, Borges, Isabel, Clusella-Trullas, Susana, Comont, Richard F., De Clercq, Patrick, Eschen, Rene, Estoup, Arnaud, Evans, Edward W., Facon, Benoit, Gardiner, Mary M., Gil, Artur, Grez, Audrey A., Guillemaud, Thomas, Haelewaters, Danny, Herz, Annette, Honek, Alois, Howe, Andy G., Hui, Cang, Hutchison, William D., Kenis, Marc, Koch, Robert L., Kulfan, Jan, Lawson Handley, Lori, Lombaert, Eric, Loomans, Antoon, Losey, John, Lukashuk, Alexander O., Maes, Dirk, Magro, Alexandra, Murray, Katie M., Martin, Gilles San, Martinkova, Zdenka, Minnaar, Ingrid A., Nedved, Oldřich, Orlova-Bienkowskaja, Marina J., Osawa, Naoya, Rabitsch, Wolfgang, Ravn, Hans Peter, Rondoni, Gabriele, Rorke, Steph L., Ryndevich, Sergey K., Saethre, May-Guri, Sloggett, John J., Soares, Antonio Onofre, Stals, Riaan, Tinsley, Matthew C., Vandereycken, Axel, van Wielink, Paul, Viglášová, Sandra, Zach, Peter, Zakharov, Ilya A., Zaviezo, Tania, and Zhao, Zihua

Published
2016
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2. Horizon Scanning to Predict and Prioritize Invasive Alien Species With the Potential to Threaten Human Health and Economies on Cyprus

Author

Peyton, Jodey M., primary, Martinou, Angeliki F., additional, Adriaens, Tim, additional, Chartosia, Niki, additional, Karachle, Paraskevi K., additional, Rabitsch, Wolfgang, additional, Tricarico, Elena, additional, Arianoutsou, Margarita, additional, Bacher, Sven, additional, Bazos, Ioannis, additional, Brundu, Giuseppe, additional, Bruno-McClung, Elizabeth, additional, Charalambidou, Iris, additional, Demetriou, Monica, additional, Galanidi, Marika, additional, Galil, Bella, additional, Guillem, Rhian, additional, Hadjiafxentis, Kypros, additional, Hadjioannou, Louis, additional, Hadjistylli, Margarita, additional, Hall-Spencer, Jason Michael, additional, Jimenez, Carlos, additional, Johnstone, Graham, additional, Kleitou, Periklis, additional, Kletou, Demetris, additional, Koukkoularidou, Despina, additional, Leontiou, Stalo, additional, Maczey, Norbert, additional, Michailidis, Nikolas, additional, Mountford, John Owen, additional, Papatheodoulou, Athina, additional, Pescott, Oliver L., additional, Phanis, Constantinos, additional, Preda, Cristina, additional, Rorke, Steph, additional, Shaw, Richard, additional, Solarz, Wojciech, additional, Taylor, Chris D., additional, Trajanovski, Saso, additional, Tziortzis, Iakovos, additional, Tzirkalli, Elli, additional, Uludag, Ahmet, additional, Vimercati, Giovanni, additional, Zdraveski, Konstantin, additional, Zenetos, Argyro, additional, and Roy, Helen E., additional

Published
2020
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3. Invasive Alien Species - Prioritising prevention efforts through horizon scanning: ENV.B.2/ETU/2014/0016: Final report

Author

Roy, Helen E., Adriaens, Tim, Aldridge, David, Bacher, Sven, Bishop, John, Blackburn, Tim M., Branquart, Etienne, Brodie, Juliet, Carboneras, Carles, Cook, Elizabeth J., Copp, Gordon H., Dean, Hannah, Eilenberg, Jørgen, Essl, Franz, Gallardo, Belinda, Garcia, Mariana, García-Berthou, Emili, Genovesi, Piero, Hulme, Philip E., Kenis, Marc, Kerckhof, Francis, Kettunen, Marianne, Minchin, Dan, Nentwig, Wolfgang, Nieto, Ana, Pergl, Jan, Pescott, Oliver, Peyton, Jodey, Preda, Cristina, Rabitsch, Wolfgang, Roques, Alain, Rorke, Steph, Scalera, Riccardo, Schindler, Stefan, Schönrogge, Karsten, Solarz, Wojciech, Stewart, Alan, Tricarico, Elena, Vanderhoeven, Sonia, Velde, Gerard van der‏, Vilà, Montserrat, Wood, Christine, Zenetos, Argyro, and Directorate-General for Environment (European Commission)

Subjects
Introduced organisms -- Europe, Espècies introduïdes -- Europa, Invasions biològiques -- Europa, Biological invasions -- Europe, Environmental protection -- Europe, Biodiversitat -- Europa, Medi ambient -- Protecció -- Europa, Biological diversity -- Europe
Abstract

The European Union Regulation (EU) 1143/2014 on invasive alien species (IAS) establishes an EU-wide framework for action to prevent, minimise and mitigate the adverse impacts of IAS on biodiversity and centres around the development of a list of IAS of EU Concern. The initial list of IAS of EU concern will be based on available risk assessments compliant with agreed minimum standards but horizon scanning is seen as critical to inform future updating of the list, in order to prioritise the most threatening new and emerging IAS. A workshop was held with the overarching aim of reviewing and validating an approach to horizon scanning to derive a ranked list of IAS which are likely to arrive, establish, spread and have an impact on biodiversity or related ecosystem services in the EU over the next decade. The agreed horizon scanning approach involved two distinct phases: i) Preliminary consultation between experts within five thematic groups to derive initial scores; ii) Consensus-building across expert groups including extensive discussion on species rankings coupled with review and moderation of scores across groups. The outcome of the horizon scanning was a list of 95 species, including all taxa (except microorganisms) within marine, terrestrial and freshwater environments, considered as very high or high priority for risk assessment Le Règlement de l’Union Européenne (UE) 1143/2014 sur les espèces notices envahissantes (EEE) établit un cadre d’actions à l’échelle européenne pour prévenir, réduire au minimum et atténuer les impacts négatifs des EEE sur la biodiversité, et se concentre sur le développement d’une liste d’EEE de préoccupation européenne. La liste initiale d’EEE de préoccupation européenne est basée sur les analyses de risque disponibles conformes aux standards minimums reconnus. Mais l’horizon scanning est essentiel pour informer les mises à jour futures de la liste, dans le but de prioritiser les EEE nouvelles et émergentes les plus menaçantes. Un workshop a été organisé avec pour but général d’évaluer et de valider une approche d’horizon scanning en vue de produire une liste ordonnée d’EEE susceptibles d’arriver, de s’établir, de se disperser et de présenter un impact sur la biodiversité et les services écosystémiques associés dans l’UE durant la prochaine décennie. L’approche d’horizon scanning avalisée comprenait deux phases distinctes: i) Une consultation préliminaire entre experts au sein de cinq groups thématiques pour produire des scores initiaux ii) L’établissement de consensus au travers des groups d’experts incluant une discussion approfondie sur les classements des espèces, combinée à une évaluation et une modération des scores entre groupes. Le résultat de l’horizon scanning consistait en une liste de 95 espèces, comprenant tous les types taxonomies (excepté des microorganismes) au sein des environnements marins, terrestres et d’eau douce, et considérées comme étant de priorité très élevée à élevée pour la réalisation d’analyses de risque

Published
2020

4. Horizon scanning to predict and prioritize invasive alien species with the potential to threaten human health and economies on Cyprus

Author

Peyton, Jodey M., Martinou, Angeliki F., Adriaens, Tim, Chartosia, Niki, Karachle, Paraskevi K., Rabitsch, Wolfgang, Tricarico, Elena, Arianoutsou, Margarita, Bacher, Sven, Bazos, Ioannis, Brundu, Giuseppe, Bruno-McClung, Elizabeth, Charalambidou, Iris, Demetriou, Monica, Galanidi, Marika, Galil, Bella, Guillem, Rhian, Hadjiafxentis, Kypros, Hadjioannou, Louis, Hadjistylli, Margarita, Hall-Spencer, Jason Michael, Jimenez, Carlos, Johnstone, Graham, Kleitou, Periklis, Kletou, Demetris, Koukkoularidou, Despina, Leontiou, Stalo, Maczey, Norbert, Michailidis, Nikolas, Mountford, John Owen, Papatheodoulou, Athina, Pescott, Oliver L., Phanis, Constantinos, Preda, Cristina, Rorke, Steph, Shaw, Richard, Solarz, Wojciech, Taylor, Chris D., Trajanovski, Saso, Tziortzis, Iakovos, Tzirkalli, Elli, Uludag, Ahmet, Vimercati, Giovanni, Zdraveski, Konstantin, Zenetos, Argyro, Roy, Helen E., Peyton, Jodey M., Martinou, Angeliki F., Adriaens, Tim, Chartosia, Niki, Karachle, Paraskevi K., Rabitsch, Wolfgang, Tricarico, Elena, Arianoutsou, Margarita, Bacher, Sven, Bazos, Ioannis, Brundu, Giuseppe, Bruno-McClung, Elizabeth, Charalambidou, Iris, Demetriou, Monica, Galanidi, Marika, Galil, Bella, Guillem, Rhian, Hadjiafxentis, Kypros, Hadjioannou, Louis, Hadjistylli, Margarita, Hall-Spencer, Jason Michael, Jimenez, Carlos, Johnstone, Graham, Kleitou, Periklis, Kletou, Demetris, Koukkoularidou, Despina, Leontiou, Stalo, Maczey, Norbert, Michailidis, Nikolas, Mountford, John Owen, Papatheodoulou, Athina, Pescott, Oliver L., Phanis, Constantinos, Preda, Cristina, Rorke, Steph, Shaw, Richard, Solarz, Wojciech, Taylor, Chris D., Trajanovski, Saso, Tziortzis, Iakovos, Tzirkalli, Elli, Uludag, Ahmet, Vimercati, Giovanni, Zdraveski, Konstantin, Zenetos, Argyro, and Roy, Helen E.

Abstract

Invasive alien species (IAS) are known to be a major threat to biodiversity and ecosystem function and there is increasing evidence of their impacts on human health and economies globally. We undertook horizon scanning using expert-elicitation to predict arrivals of IAS that could have adverse human health or economic impacts on the island of Cyprus. Three hundred and twenty five IAS comprising 89 plants, 37 freshwater animals, 61 terrestrial invertebrates, 93 terrestrial vertebrates, and 45 marine species, were assessed during a two-day workshop involving 39 participants to derive two ranked lists: (1) IAS with potential human health impacts (20 species ranked within two bands: 1–10 species or 11–20 species); and, (2) IAS with potential economic impacts (50 species ranked in three bands of 1–10, 11–20, and 21–50). Five species of mosquitoes (Aedes aegypti, Aedes albopictus, Aedes flavopictus, Aedes japonicus, and Culex quinquefasciatus) were considered a potential threat to both human health and economies. It was evident that the IAS identified through this process could potentially arrive through many pathways (25 and 23 pathways were noted for the top 20 IAS on the human health and economic impact lists respectively). The Convention on Biological Diversity Level II (subcategory) pathways Contaminant on plants, pet/aquarium/terrarium species (including live food for such species), hitchhikers in or on aeroplanes, hitchhikers in or on ship/boats, and vehicles were the main pathways that arose across both lists. We discuss the potential of horizon scanning lists to inform biosecurity policies and communication around IAS, highlighting the importance of increasing understanding amongst all stakeholders, including the public, to reduce the risks associated with predicted IAS arrivals.

Published
2020

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

Author

Roy, Helen E., Bacher, Sven, Essl, Franz, Adriaens, Tim, Aldridge, David C., Bishop, John D.D., Blackburn, Tim M., Branquart, Etienne, Brodie, Juliet, Carboneras, Carles, Cottier-Cook, Elizabeth J., Copp, Gordon H., Dean, Hannah J., Eilenberg, Jørgen, Gallardo, Belinda, Garcia, Mariana, García‐Berthou, Emili, Genovesi, Piero, Hulme, Philip E., Kenis, Marc, Kerckhof, Francis, Kettunen, Marianne, Minchin, Dan, Nentwig, Wolfgang, Nieto, Ana, Pergl, Jan, Pescott, Oliver L., Peyton, Jodey M., Preda, Cristina, Roques, Alain, Rorke, Steph L., Scalera, Riccardo, Schindler, Stefan, Schonrogge, Karsten, Sewell, Jack, Solarz, Wojciech, Stewart, Alan J.A., Tricarico, Elena, Vanderhoeven, Sonia, van der Velde, Gerard, Vilà, Montserrat, Wood, Christine A., Zenetos, Argyro, Rabitsch, Wolfgang, Roy, Helen E., Bacher, Sven, Essl, Franz, Adriaens, Tim, Aldridge, David C., Bishop, John D.D., Blackburn, Tim M., Branquart, Etienne, Brodie, Juliet, Carboneras, Carles, Cottier-Cook, Elizabeth J., Copp, Gordon H., Dean, Hannah J., Eilenberg, Jørgen, Gallardo, Belinda, Garcia, Mariana, García‐Berthou, Emili, Genovesi, Piero, Hulme, Philip E., Kenis, Marc, Kerckhof, Francis, Kettunen, Marianne, Minchin, Dan, Nentwig, Wolfgang, Nieto, Ana, Pergl, Jan, Pescott, Oliver L., Peyton, Jodey M., Preda, Cristina, Roques, Alain, Rorke, Steph L., Scalera, Riccardo, Schindler, Stefan, Schonrogge, Karsten, Sewell, Jack, Solarz, Wojciech, Stewart, Alan J.A., Tricarico, Elena, Vanderhoeven, Sonia, van der Velde, Gerard, Vilà, Montserrat, Wood, Christine A., Zenetos, Argyro, and Rabitsch, Wolfgang

Abstract

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.

Published
2019

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

Author

Roy, Helen E., primary, Bacher, Sven, additional, Essl, Franz, additional, Adriaens, Tim, additional, Aldridge, David C., additional, Bishop, John D. D., additional, Blackburn, Tim M., additional, Branquart, Etienne, additional, Brodie, Juliet, additional, Carboneras, Carles, additional, Cottier-Cook, Elizabeth J., additional, Copp, Gordon H., additional, Dean, Hannah J., additional, Eilenberg, Jørgen, additional, Gallardo, Belinda, additional, Garcia, Mariana, additional, García‐Berthou, Emili, additional, Genovesi, Piero, additional, Hulme, Philip E., additional, Kenis, Marc, additional, Kerckhof, Francis, additional, Kettunen, Marianne, additional, Minchin, Dan, additional, Nentwig, Wolfgang, additional, Nieto, Ana, additional, Pergl, Jan, additional, Pescott, Oliver L., additional, M. Peyton, Jodey, additional, Preda, Cristina, additional, Roques, Alain, additional, Rorke, Steph L., additional, Scalera, Riccardo, additional, Schindler, Stefan, additional, Schönrogge, Karsten, additional, Sewell, Jack, additional, Solarz, Wojciech, additional, Stewart, Alan J. A., additional, Tricarico, Elena, additional, Vanderhoeven, Sonia, additional, Velde, Gerard, additional, Vilà, Montserrat, additional, Wood, Christine A., additional, Zenetos, Argyro, additional, and Rabitsch, Wolfgang, additional

Published
2018
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7. The contribution of volunteer recorders to our understanding of biological invasions

Author

Roy, Helen E., Rorke, Steph L., Beckmann, Bjorn, Booy, Olaf, Botham, Marc S., Brown, Peter M.J., Harrower, Colin, Noble, David, Sewell, Jack, and Walker, Kevin

Subjects
Botany, Zoology, Ecology and Environment
Abstract

The process of invasion and the desire to predict the invasiveness (and associated impacts) of new arrivals has been a focus of attention for ecologists over centuries. The volunteer recording community has made unique and inspiring contributions to our understanding of invasion biology within Britain. Indeed information on non-native species (NNS) compiled within the GB Non-Native Species Information Portal (GB-NNSIP) would not have been possible without the involvement of volunteer experts from across Britain. Here we review examples of ways in which biological records have informed invasion biology. We specifically examine NNS information available within the GB-NNSIP to describe patterns in the arrival and establishment of NNS providing an overview of habitat associations of NNS in terrestrial, marine and freshwater environments. Monitoring and surveillance of the subset of NNS that are considered to be adversely affecting biodiversity, society or the economy, termed invasive non-native species (INNS), is critical for early warning and rapid response. Volunteers are major contributors to monitoring and surveillance of INNS and not only provide records from across Britain but also underpin the system of verification necessary to confirm the identification of sightings. Here we describe the so-called ‘alert system’ which links volunteer experts with the wider recording community to provide early warning of INNS occurrence. We highlight the need to increase understanding of community and ecosystem-level effects of invasions and particularly understanding of ecological resilience. Detailed field observations, through biological recording, will provide the spatial, temporal and taxonomic breadth required for such research. The role of the volunteer recording community in contributing to the understanding of invasion biology has been invaluable and it is clear that their expertise and commitment will continue to be so.

Published
2015
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8. The harlequin ladybird, Harmonia axyridis:global perspectives on invasion history and ecology

Author

Roy, Helen E., Brown, Peter M.J., Adriaens, Tim, Berkvens, Nick, borges, Isabel, Clusella-Trullas, Susana, Comont, Richard F., Clercq, Patrick De, Eschen, René, Estoup, Arnaud, Evans, Edward W. Evans, Facon, Benoit, Gardiner, Mary M., Gil, Artur, Grez, Audrey A., Guillemaud, Thomas, Haelewaters, Danny, Herz, Annette, Honek, Alois, Howe, Andrew Gordon, Hui, Cang, Hutchison, William D., Keni, Marc, Koch, Robert L., Kulfan, Jan, Handley, Lori Lawson, Lombaert, Eric, Loomans, Antoon, Losey, John, Lukashuk, Alexander O., Maes, Dirk, Magro, Alexandra, Murray, Katie M., Martin, Gilles San, Martinkova, Zdenka, Minnaar, Ingrid A., Nedved, Oldřich, Orlova-Bienkowskaja,, Marina J., Osawa, Naoya, Rabitsch, Wolfgang, Ravn, Hans Peter, Rondoni, Gabriele, Rorke, Steph L., Ryndevich, Sergey K., Saethre, May-Guri, Sloggett, John J., Soares, Antonio Onofre, Stals, Riaan, TinsleY, Matthew C., Vandereycken, Axel, Wielink, Paul van, Viglášová, Sandra, Zach, Peter, Zakharov, Ilya A., Zaviezo, Tania, Zhao, Zihua, Roy, Helen E., Brown, Peter M.J., Adriaens, Tim, Berkvens, Nick, borges, Isabel, Clusella-Trullas, Susana, Comont, Richard F., Clercq, Patrick De, Eschen, René, Estoup, Arnaud, Evans, Edward W. Evans, Facon, Benoit, Gardiner, Mary M., Gil, Artur, Grez, Audrey A., Guillemaud, Thomas, Haelewaters, Danny, Herz, Annette, Honek, Alois, Howe, Andrew Gordon, Hui, Cang, Hutchison, William D., Keni, Marc, Koch, Robert L., Kulfan, Jan, Handley, Lori Lawson, Lombaert, Eric, Loomans, Antoon, Losey, John, Lukashuk, Alexander O., Maes, Dirk, Magro, Alexandra, Murray, Katie M., Martin, Gilles San, Martinkova, Zdenka, Minnaar, Ingrid A., Nedved, Oldřich, Orlova-Bienkowskaja,, Marina J., Osawa, Naoya, Rabitsch, Wolfgang, Ravn, Hans Peter, Rondoni, Gabriele, Rorke, Steph L., Ryndevich, Sergey K., Saethre, May-Guri, Sloggett, John J., Soares, Antonio Onofre, Stals, Riaan, TinsleY, Matthew C., Vandereycken, Axel, Wielink, Paul van, Viglášová, Sandra, Zach, Peter, Zakharov, Ilya A., Zaviezo, Tania, and Zhao, Zihua

Abstract

The harlequin ladybird, H. axyridis has provided detailed insights into invasion biology from broad patterns and processes to approaches in surveillance and monitoring. An impressive number of studies on this alien species have provided mechanistic evidence alongside models explaining large-scale patterns and processes. The involvement of citizens in monitoring this species in a number of countries around the world is inspiring and has provided data on scales that would be otherwise unachievable.

Published
2016

10. The harlequin ladybird, Harmonia axyridis

Author

Roy, Helen E., Brown, Pëter M. J., Tim Adriaens, Nick Berkvens, Isabel Borges, Susana Clusella-Trullas, Comont, Richard F., Patrick De Clercq, Rene Eschen, Arnaud Estoup, Evans, Edward W., Benoit Facon, Gardiner, Mary M., Artur Gil, Grez, Audrey A., Thomas Guillemaud, Danny Haelewaters, Annette Herz, Alois Honek, Howe, Andy G., Cang Hui, Hutchison, William D., Marc Kenis, Koch, Robert L., Jan Kulfan, Lori Lawson Handley, Eric Lombaert, Antoon Loomans, John Losey, Ok, Alexander Lukashuk, Dirk Maes, Alexandra Magro, Murray, Katie M., Gilles San Martin, Zdenka Martinkova, Minnaar, Ingrid A., Oldrich Nedved, Orlova-Bienkowskaja, Marina J., Naoya Osawa, Wolfgang Rabitsch, Hans Peter Ravn, Gabriele Rondoni, Rorke, Steph L., Ryndevich, Sergey K., May-Guri Saethre, Sloggett, John J., Antonio Onofre Soares, Riaan Stals, Tinsley, Matthew C., Axel Vandereycken, Paul van Wielink, Sandra Viglasova, Peter Zach, Zakharov, Ilya A., Tania Zaviezo, and Zihua Zhao

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

Author

Roy, Helen E, Bacher, Sven, Essl, Franz, Adriaens, Tim, Aldridge, David C, Bishop, John DD, Blackburn, Tim M, Branquart, Etienne, Brodie, Juliet, Carboneras, Carles, Cottier-Cook, Elizabeth J, Copp, Gordon H, Dean, Hannah J, Eilenberg, Jørgen, Gallardo, Belinda, Garcia, Mariana, García-Berthou, Emili, Genovesi, Piero, Hulme, Philip E, Kenis, Marc, Kerckhof, Francis, Kettunen, Marianne, Minchin, Dan, Nentwig, Wolfgang, Nieto, Ana, Pergl, Jan, Pescott, Oliver L, M Peyton, Jodey, Preda, Cristina, Roques, Alain, Rorke, Steph L, Scalera, Riccardo, Schindler, Stefan, Schönrogge, Karsten, Sewell, Jack, Solarz, Wojciech, Stewart, Alan JA, Tricarico, Elena, Vanderhoeven, Sonia, Van Der Velde, Gerard, Vilà, Montserrat, Wood, Christine A, Zenetos, Argyro, and Rabitsch, Wolfgang

Subjects
consensus approach, Consensus Development Conferences as Topic, biological invasions, risk assessment, prioritization, Biodiversity, 15. Life on land, Environmental Policy, introductions, Animals, 14. Life underwater, European Union, impacts, Introduced Species, Ecosystem
Abstract

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.

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

Author

Roy HE, Bacher S, Essl F, Adriaens T, Aldridge DC, Bishop JDD, Blackburn TM, Branquart E, Brodie J, Carboneras C, Cottier-Cook EJ, Copp GH, Dean HJ, Eilenberg J, Gallardo B, Garcia M, García-Berthou E, Genovesi P, Hulme PE, Kenis M, Kerckhof F, Kettunen M, Minchin D, Nentwig W, Nieto A, Pergl J, Pescott OL, M Peyton J, Preda C, Roques A, Rorke SL, Scalera R, Schindler S, Schönrogge K, Sewell J, Solarz W, Stewart AJA, Tricarico E, Vanderhoeven S, van der Velde G, Vilà M, Wood CA, Zenetos A, and Rabitsch W

Subjects
Animals, Consensus Development Conferences as Topic, Environmental Policy, European Union, Introduced Species statistics & numerical data, Risk Assessment, Biodiversity, Ecosystem, Introduced Species trends
Abstract

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., (© 2018 The Authors. Global Change Biology Published by John Wiley & Sons Ltd.)

Published
2019
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