Ungulate-vehicle crashes peak a month earlier than 38 years ago due to global warming

Abstract Global change has manifested itself as climate warming in Central Europe recent decades. Average daily air temperatures increased by an average of 2 °C between 1982 and 2018. Air temperature changes have affected the timing vegetation periods (phenophases) also influenced behaviour animals. We worked with data on wildlife-vehicle crashes (WVC) recorded Czech Police period 1982–2019. Three peaks can usually be observed (spring, summer, autumn) WVC time series. Eighty percent these records involved roe deer ( Capreolus capreolus ). Such a high ratio allowed us to assume that any significant detected will predominantly related deer. discovered mortality roads occurs earlier at present spring than past. The peak shifted almost month beginning year compared situation 38 years ago. respective summer autumn were not statistically significant. results suggest effect through increasing shifting phenophases. Thus, onset activity associated territory delineation expected higher movement indirectly determined analysis shift model reveals ungulate behavioural patterns is evident from other biological thus surprisingly offers suitable study framework for determining impacts environmental