Helen Poulos, adjunct assistant professor of environmental studies, is the coauthor of two papers published Oct. 22 in the journals Fire and Philosophical Transactions of the Royal Society B, respectively. Poulos lead-authored a paper on fire and plant evolutionary ecology titled, "Do Mixed Fire Regimes Shape Plant Flammability and Post-Fire Recovery Strategies?" Contrary to a new model assuming that plant species have evolved three divergent flammability strategies, Poulos and her fellow researchers present three case studies that indicate plant species have evolved "bet-hedging strategies" that mix a variety of flammability and post-fire recovery strategies. Poulos also co-authored a paper led by ecologist Christopher Johnson of…