Vegetation survey after wildfire 2021

The Pacific Northwest Permanent Sample Plot Program is a long-term study of forest vegetation across the Pacific Northwest. The program samples 135 plots across a diversity of forest types in Oregon and Washington. Many of the plots are within the HJ Andrews Experimental Forest. Long-term observational data such as these are essential to understanding the fundamental processes of tree growth, mortality, regeneration and plant succession.  This photo gallery highlights field work in Watershed 1 following the Holiday Farm wildfire. Many permanent vegetation plots burned in the fire, so field crews had to relocate and stake corners before remeasuring remaining vegetation.