Titel Deelnemers "Developing a prioritization framework for the management of invasive species under climate change for the Flemish Waterways: drafting the priority species list" "Frederique Steen, Bram D'hondt, Tim Adriaens" "Modeling disturbance-based native invasive species control and its implications for management" "Nancy Shackelford, Michael Renton, Michael Perring, Richard J Hobbs" "Appendices on management measure assessments - A manual for the management of vertebrate invasive alien species of Union concern, incorporating animal welfare. 1st Edition." "Kevin G Smith, Ana L Nunes, J Aegerter, SE Baker, Ilaria Di Silvestre, CC Ferreira, M Griffith, Julie Lane, A Muir, S Binding, M Broadway, Peter A Robertson, Riccardo Scalera, Tim Adriaens, P-A Åhlén, A Aliaga, Kristof Baert, DE Bakaloudis, Sandro Bertolino, L Briggs, Emma Cartuyvels, F Dahl, Bram D'hondt, M Eckert, Friederike Gethöffer, E Gojdičová, Frank Huysentruyt, D Jelić, A Lešová, M Lužnik, L Moreno, G Nagy, L Poledník, Cristina Preda, J Skorupski, D Telnov, T Trichkova, Hugo Verreycken, M Vucić" "Risk Management Assessment Improves the Cost-Effectiveness of Invasive Species Prioritisation" "Peter A Robertson, Aileen C. Mill, Tim Adriaens, Niall Moore, Sonia Vanderhoeven, Franz Essl, Olaf Booy" "International agreements commit nations to control or eradicate invasive alien species. The scale of this challenge exceeds available resources and so it is essential to prioritise the management of invasive alien species. Species prioritisation for management typically involves a hierarchy of processes that consider the likelihood and scale of impact (risk assessment) and the feasibility, costs and effectiveness of management (risk management). Risk assessment processes are widely used, risk management less so, but are a crucial component of resource decision making. To assess the cost-effectiveness of prioritisation, we considered 26 high-risk species considered for eradication from Great Britain (GB) with pre-existing risk assessment and risk management outputs. We extracted scores to reflect the overall risk to GB posed by the species, together with the estimated cost and the overall feasibility of eradication. We used these to consider the relative reduction in risk per unit cost when managing prioritised species based on different criteria. We showed that the cost-effectiveness of prioritisation within our sample using risk assessment scores alone, performed no better than a random ranking of the species. In contrast, prioritisation including management feasibility produced nearly two orders of magnitude improvement compared to random. We conclude that basing management actions on priorities based solely on risk assessment without considering management feasibility risks the inefficient use of limited resources. In this study, the cost-effectiveness of species prioritisation for action was greatly increased by the inclusion of risk management assessment." "Using structured eradication feasibility assessment to prioritise the management of new and emerging invasive alien species in Europe" "Olaf Booy, P.A. Robertson, Niall Moore, J Ward, H. E Roy, Tim Adriaens, D Shaw, Valkenburg Van, G Wyn, Sandro Bertolino, Olivier Blight, Etienne Branquart, Giuseppe Brundu, Joe Caffrey, Dario Capizzi, Jim Casaer, Olivier De Clerck, Neil E. Coughlan, Eithne Davis, Jaimie T.A. Dick, Franz Essl, Guillaume Fried, Piero Genovesi, Pablo González-Moreno, Frank Huysentruyt, Stuart R. Jenkins, Francis Kerckhof, Frances E. Lucy, Wolfgang Nentwig, Jonathan Newman, Wolfgang Rabitsch, Sugoto Roy, Uwe Starfinger, Paul D. Stebbing, Jan Stuyck, Mike Sutton-Croft, Elena Tricarico, Sonia Vanderhoeven, Hugo Verreycken, Aileen C. Mill" "Citizen science is a vital partnership for invasive alien species management and research" "Michael J O Pocock, Tim Adriaens, Sandro Bertolino, Rene Eschen, Franz Essl, Philip E. Hulme, Jonathan M. Jeschke, Helen E. Roy, Heliana Teixeira, Maarten de Groot" "Invasive alien species (IAS) adversely impact biodiversity, ecosystem functions and socio-economics. Citizen science can be an effective tool for IAS surveillance, management and research, providing large datasets over wide spatial extents and long time periods, with public participants generating knowledge that supports action. We demonstrate how citizen science has contributed knowledge across the biological invasion process, especially for early detection and distribution mapping. However, we recommend that citizen science could be used more for assessing impacts and evaluating the success of IAS management. Citizen science does have limitations and we explore solutions to two key challenges: ensuring data accuracy and dealing with uneven spatial coverage of potential recorders (which limits the dataset’s ‘fit for purpose’). Greater co-development of citizen science with public stakeholders will help us better realise its potential across the biological invasion process and across ecosystems globally while meeting the needs of participants, local communities, scientists and decision-makers." "The importance of open data for invasive alien species research, policy and management" "Quentin Groom, Peter Desmet, Sonia Vanderhoeven, Tim Adriaens" "Prioritizing riparian and aquatic invasive plant species for management under a changing climate" "Management trials and demonstrations for invasive shrub species in coastal dunes" "Non-native Mahonia aquifolium (Pursh) Nutt. is invasive in Belgian dune ecosystems. This evergreen shrub is a popular garden plant in the area. It grows vigorously on sandy soil and with its clonal growth strongly proliferates and overgrows native vegetation. There was an urgent need amongst conservation managers for data on efficiency of potential management measures. Therefore, an experiment was set up in three heavily infested dune reserves. Individual M. aquifolium plants were located with GPS and received different management treatments: (1) manual removal (digging) with shovels, (2) leaf treatment with a glyphosate Roundup® Max 5% formula on the leafs or (3) stem treatment with either glyphosate or (4) a saturated salt solution as an environmentally friendly alternative. We monitored regrowth one year after treatment (spring 2014). Except for leaf treatment (77%), kill rates were generally low: 38% for stem treatment, 27% for digging and 4% for salt treatment. Excavation of a number of individuals revealed that some roots do reshoot, even if the aboveground parts of the plant look completely dead. Kill rates are therefore probably overestimated. Furthermore, a demonstration on mechanical removal using a heavy excavator was held in a highly infested area (350 m², 100% M. aquifolium cover). Here, invasive shrub removal was combined with large-scale landscape restoration. The crane work was accompanied by intensive raking by hand, which enabled removal of a lot of the smaller rhizome fragments. The effort was documented (cost, effort) and the outcome monitored in terms of regrowth from different depths. The rooting system appeared to be relatively shallow (30-40 cm). Limited regrowth was observed from superficially buried rhizome fragments which could easily be pulled out." "manIAS: A community-driven data model and data exchange format for the management of invasive alien species and wildlife" "Lien Reyserhove, Jasmijn Hillaert, Tim Adriaens, Peter Desmet, Bram D'hondt, Quentin Groom, Damiano Oldoni"