Generic ecological impact assessment of alien species (GEIAA): the third generation of assessments in Norway

• DOI: 10.1007/s10530-019-02033-6
• Publication Date: 2019-06-25T13:21:22Z
• Authors: Hanno Sandvik; Olga Hilmo; Anders G. Finstad; Hanne Hegre; Toril L. Moen; Trond Rafoss; Olav Skarpaas; Reidar Elven; Helge Sandmark; Lisbeth Gederaas
• Keywords: Alien species; Ecological Assessment; Impact assessment; Quantitative assessment; Quality Assessment

The generic ecological impact assessment of alien species (GEIAA) is described. It comprises a set criteria and an procedure. consists three that quantify invasion potential, six capture the effects species. threshold values for all are numerically defined, rendering fully quantitative. Genericity ensured by using applicable to taxonomic groups in habitats. In being generic, quantitative, normatively neutral, were inspired international Red List criteria. Capturing both potential effect, GEIAA can be regarded as full assessment. procedure contains guidelines on documentation, collection background information, handling uncertainty, quality assurance. represents second revision, thus third generation, methodology Norway. has recently been used carry out more than 2500 assessments Norway Sweden.