2.1. Data sources
The presented results are based on water quality monitoring data analyzed by the Norwegian Institute for Water Research
(NIVA). The database for Norway originates from producers participating in annual water quality monitoring projects from
1999 to 2006 (WQ 99-06), a cooperation between NIVA, Norwegian University of Life Sciences (UMB), Nofima Marin
(former Akvaforsk) and KPMG (Rosseland et al., 2005). Data from the Chile were obtained from current and potential production sites from 2006 to 2008 by NIVA-Chile.