According to an August 2013 report by the California Environmental Protection Agency titled “Indicators of Climate Change in California,” regional climate change has profoundly impacted the state’s natural physical and biological systems…
Climate change has also affected natural biological systems, as shifts in habitat elevation, changes in timing of growth stages, and increased vulnerability to wildfires or pathogens have threatened species’ abilities to survive. These biological impacts include:
— Heat-related mortality. The July 2006 heat wave, “unprecedented in its magnitude and geographic extent,” resulted in 140 California deaths. Heat-related illness and death is expected to increased as a result of continued warming and more frequent and intense heat waves.