Prominent changes in freshwater community composition, such as in- creases in cyanobacteria and warm-tolerant zooplankton species, the loss of cold-water fish, gains in thermo-tolerant fish, macro-inverte- brates, and floating macrophytes, are occurring  . Geothermal streams have provided evidence about community structure and ecosystem function at high temperatures. A study of 14 such habitats reported simplified food web structures and shortened pathways of energy flux between consumers and resources  . Changes in the relative abundance of species, species composition and biodiversity due to warming trends, and non-climate-driven changes are to be expected in lakes and rivers
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report