Prior to recent fires, we estimated that 40% of the H.J. Andrews Experimental Forest was covered in old growth forest, characterized by 400-500-year-old canopy emergent Douglas fir and complex vertical structure.  Recent fires since 2020 have burned ca. 70% of the landscape and altered the structure and successional trajectory of many of our forest stands, including in some of our largest remaining unroaded old growth areas.  Whether this recent disturbance constitutes a loss of old growth area depends on the burn severity and the eye of the beholder.  We are studying the effects of the changes in old growth and mature stands from multiple perspectives, including the most important ones, those of old growth associated species.