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. 2020 Sep 8;7:277. doi: 10.1038/s41597-020-00586-z

Fig. 1.

Fig. 1

General outline of the different construction steps of InvaCost. * Relevant materials were those (i) readable by the review team (i.e. written in English or French) for ensuring reliable assessment, (ii) containing at least one cost estimate (iii) exclusively associated with (at least one) invasive species. This assessment was based on the progressive analysis of titles, abstracts and keywords. Materials whose abstracts were not accessible were conservatively considered as relevant for further full-text analysis. ** Cited references were materials not gathered with our literature search process, but mentioned as original references in the relevant materials (initially collected) we analysed when seeking for cost estimates. Currently, 484 cited references are referenced in InvaCost.