Changes in climate over short distances in mountains are reflected in large ecological gradients. AR5 reported new evidence that plant species of mid and low elevations were starting to colonise higher elevations in mountains. Since AR5, new studies have been published , including in some previously less well studied areas such as the Andes  and parts of Asia . There is now high confidence that many plant species' distributions have shifted to higher elevations in recent decades, consistent with climatic warming . In recent years publications have also started to show similar trends in some animal species, including birds  and snails . Other climatic variables besides temperature can also affect elevational limits of species  and sometimes in ways that contrast with temperature, for example increasing precipitation can allow some species to occur at lower elevations in dry climates . Tsai et al.  reported large changes in the montane bird community in Taiwan, which they link to changes in weather patterns, including more severe typhoons. Changes in the amplitude and frequency of bank vole population waves in the Ilmen Nature Reserve in the Middle Urals can be linked to longer frost-free periods .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report