Long term (50 year) records for fish occupation in 20 lakes across Alberta

A dataset of lake morphologies, global climate change indicators, and fish occupation records across Alberta, fprr 20 lakes, with time series from the 1970s-2019. For each waterbody, we also include the GPS coordinates.The 1st sheet, <code>lake_species_occupancy</code>, describes the occurence of species at each of the 20 lake, for the given time period.<br>The 2nd sheet, <code>species_characteristics</code>, provides the characteristics of each species identified in the first sheet.<br>The 3rd sheet, <code>lake_environmental_changes</code>, describe the lakes' characteristics, as well as global climate indicators identified around the location for each lake.