As new invasive alien species can be introduced continuously into the Union and alien species present are spreading and expanding their range, it is necessary to ensure that the Union list is constantly reviewed and kept up-to-date.
Toisc gur féidir speicis choimhthíocha ionracha nua a thabhairt isteach san Aontas go leanúnach agus toisc go bhfuil speicis choimhthíocha atá ann ag leathadh agus ag leathnú a raoin, ní mór a áirithiú go ndéanfar athbhreithniú leanúnach ar liosta an Aontais agus go gcoimeádfar cothrom le dáta é.