Arctic charr and brown trout data from a compensatory nutrient enrichment experiment in an oligotrophicated hydropower reservoir

This is a data set with length (fork lengt, mm), wet weight (g), condition (g/cm3x100) and age (+years) of Arctic charr (Salvelinus alpinus) and brown trout (Salmo trutta) from a whole lake experiment in two hydropower reservoirs in Jämtland region, Sweden. Nutrients (phosphorus and nitrogen) were added to Stor-Mjölkvattnet and upstream Burvattnet was a reference system. The study cover the years 2001-2009 and 2016, and nutrients were added to Stor-Mjölkvattnet during 8 consecutive years (2002-2009). For detailed method description, see Milbrink et al. (2025), https://doi.org/10.1080/02705060.2025.2511868