Characteristics of 425 Norwegian study lakes

Morphometric and climatic as well as trout yield data (i.e., grams of brown trout per 100 m2 of survey net per night) from 425 lakes in Norway, Northern Europe. "LakeNumber" refers to individual lake numbering by the Norwegian Water Resources and Energy Directorate (NVE; www.nve.no). Lake morphometry data (area, shoreline development, altitude, coordinates in UTM33) is obtained from NVE database. The lake climatic and catchment data (mean July air temperature, NDVI = Normalized Difference Vegetation Index, and terrain slope) is obtained and measured as described by Finstad et al. (2014; DOI: 10.1111/ele.12201). "Stocking" and "Regulation" refer to presence/absence of brown trout stocking and water level regulation for hydropower, respectively. "GillnetSeries" refer to type of gillnet series used for catching brown trout, whereas "FishRichness" and "FishCommunity" refer to total number of recorded fish species and fish community type present in the lake (see the main article for description of the latter). The remaining binary data indicates presence/absence of different fish species coexisting with brown trout at the time of the survey fishing.