Supplementary material 1 from: Rato J, Brandão P, Gama M, Banha F, Anastácio P (2025) Effectiveness of legislative tools to stop biological invasions: freshwater turtles' invasion in Europe as a study case. In: Anastácio P, Ribeiro F, Chainho P (Eds) Invasions in Aquatic Systems. NeoBiota 102: 313-329. https://doi.org/10.3897/neobiota.102.143330

Figure S1Correlation plot among the different variables. CountryEuropean countries, Country_areaCurrent area of the country in squared km, GDPCountry Growth Domestic product, Import_TsNumber of imported Trachemys scripta per country per year, PeriodBefore and after 2016, EUeach countries EU membership per year, Records_AllGBIF records of all testudines species in the wild, Records_TsGBIF records of Trachemys scripta in the wild, Records OtherGBIF records of other nonTrcahemys scripta species in the wild, Imports_OthersNumber of imported non-Trachemys scripta species per country per year, Yearyears from 1998 until 2022, Cites_speciesNumber of CITES listed freshwater turtle species per year, PopulationEach country population per year Red circles represent negative correlation, and blue circles represent positive correlation. The bigger the circle the highest the correlation among the variables. Inside the circle there is the correlation value. Figure S2Yearly variation of the total imports of Trachemys scripta and other freshwater turtles (FTs), CITES database. Red line-T. scripta. Blue lineOther FTs. Figure S3Yearly variation of the total records of Trachemys scripta and all freshwater turtles (FTs) in GBIF. Red line-T. scripta. Blue lineAll FTs. Figure S4Yearly variation of the total records of other freshwater turtles (FTs) and all FTs in GBIF. Red line-Other FTs. Blue lineAll FTs. Table S1Quantity of imported live turtle per purpose, according to the CITES Database. Quantity is the number of turtles traded. Purposes classification is described in https://trade.cites.org/ Purpose according to CITES Quantity Breeding in captivity 5347 Circus or travelling exhibition 201 Commercial 5688661 Educational 3 Hunting trophy 5000 Medical (including biomedical research) 324 Personal 476 Scientific 7289 Unknown 1344496 Zoo 8650 Table S2Number of nonEU and EU countries per year. Year Number of Non-EU Countries Number of EU Countries 1998 30 15 1999 30 15 2000 30 15 2001 30 15 2002 30 15 2003 30 15 2004 21 24 2005 21 24 2006 21 24 2007 19 26 2008 19 26 2009 19 26 2010 19 26 2011 19 26 2012 19 26 2013 18 27 2014 18 27 2015 18 27 2016 18 27 2017 18 27 2018 18 27 2019 18 27 2020 19 26 2021 19 26 2022 19 26