A record of change

Scientists compared sediment core samples from two locations at the bottom of Great Slave Lake with samples extracted about 20 years earlier and discovered a dramatic shift in the type of phytoplankton species that inhabit the lake

Source: Rühland KM, Evans M, Smol JP. 2023 Arctic warming drives striking twentyfirst century ecosystem shifts in Great Slave Lake (Subarctic Canada), North America’s deepest lake. Proc. R. Soc. B 20231252. https://doi.org/10.1098/rspb.2023.1252