Data for Lake Otervatn in eastern Finnmark, showing alkalinity and brown trout catch per unit effort

Data for Lake Otervatn in eastern Finnmark, showing (a) alkalinity (μeq/L) and (b) brown trout catch per unit effort (CPUE, expressed in number of fish caught per 100 m2 of gill net area) since 1986, and (c) brown trout populations in relation to changes in alkalinity