Correction to: Estuaries and Coasts (2021) 44:70–87

https://doi.org/10.1007/s12237-020-00761-w

The original online version of the article has been corrected. On page 77, right column, first paragraph, the sentence is revised as follows:

Therefore, for a given factor, the first-order index gives the expected fraction by which the output variance would be reduced if the factor i was exactly known, while the total index gives the fraction of variance that would remain if all factors except factor i were known (Saltelli et al. 2010).