The Economic Times

In 1997, Simon Fraser University used 10,000-year-old pollen to reconstruct British Columbia's warmer past. 29 years later, his evidence still warns forests could lose alpine meadows as trees climb 100 metres higher

Ancient pollen data reveals past climate shifts and their forest impacts. Warmer periods brought more Douglas fir and alder after fires. Future warming may eliminate alpine meadows as trees ascend mountains. Drought-resistant Douglas fir will likely replace cedar and hemlock species. Many small lakes and wetlands could dry up, threatening wildlife survival.