Ed that a monitoring program for its implementation is followed. Thinking of the effects of climate change, the impacts from IAS will likely turn out to be far more serious inside the future [69], which means that there is no time for you to waste and also the deficits in IAS management have to be addressed as quickly as you can. A speedy and comprehensive response may be the only method to lower the future impacts of biological invasions [70].Author Contributions: GW9662 web Conceptualization, O.R., C.K. and D.P.; methodology, O.R.; validation, O.R. and C.K.; formal evaluation, O.R.; investigation, O.R. and C.K.; information curation, O.R.; writing–original draft preparation, O.R.; writing–review and editing, O.R. and D.P.; visualization, O.R.; supervision, D.P. All authors have study and agreed for the published version on the manuscript. Funding: This project was funded by the European Union, Interreg Europe (index number PGI05271). Institutional Assessment Board Statement: Not applicable. Informed Consent Statement: Not applicable. Data Availability Statement: Not applicable. Acknowledgments: We want to thank our INVALIS Project partners and also the members on the stakeholders’ group in Greece for sharing experiences, tips, and opinions, as a result contributing towards the development on the Action Plan. Specific thanks visit Petros Varelidis for the preparation along with the initiation of the INVALIS project and to NECCA’s Administrative Board and Directorate Basic for contributing towards the continuation and supporting the Project. We also want to thank the three anonymous reviewers for critically reading the manuscript and delivering insightful comments. The INVALIS Action Program has currently been submitted and approved by the Joint Secretariat Interreg Europe and has been published around the INVALIS web site, as demanded by the Interreg Europe plan. Conflicts of Interest: The authors declare no conflict of interest. The funders had no part within the design and style in the study; within the collection, analyses, or interpretation of data; inside the writing with the manuscript, or within the selection to publish the outcomes.AbbreviationsEASIN EC ELNAIS EU IAS JMD MoEE NECCA NGO European Alien Method Facts Network European Commission Etrasimod custom synthesis Hellenic Network on Aquatic Invasive Species European Union Invasive Alien Species Joint Ministerial Decision Ministry of Environment and Energy All-natural Atmosphere and Climate Transform Agency Non-Governmental OrganizationJ. Mar. Sci. Eng. 2021, 9,13 ofAppendix A. INVALIS Project PartnersTable A1. INVALIS project partners. Partner Name Natural Environment and Climate Adjust Agency Lombardy Foundation for the Atmosphere Ministry for Ecological Transition Sustainability–Junta de Extremadura Corsican Agency of Environment Bucharest-Ilfov Regional Development Agency Institute of Sciences, Technologies and Agroenvironment with the University of Porto Zemgale Planning Area Country Greece Italy Spain France Romania Portugal Latvia Role in Project Lead Companion Partner Partner Partner Partner Advisory Companion PartnerAppendix B. Regional INVALIS Activities in GreeceTable A2. Regional stakeholder meetings. No. 1 two three 4 five six Topic Introductory meeting IAS: Eradication, control, and impact mitigation solutions Emerging conflicts of interest in IAS management Evaluation of territories/ecosystems’ vulnerability to IAS Implementation in the EU directives relating to IAS INVALIS final results and management of IAS in Greece Date 29 October 2019 16 December 2019 25 November 2020 5 February 2021 31 March 2021 two June 2021 Kind Physical Physical.