Northwest Science is happy to report on corrections for errors, typos, or other significant issues associated with previously published work. We received one such request for corrections from a previous issue while preparing our current issue.

The following corrections were reported for van Mantgem and Sarr (2015), Structure, Diversity, and Biophysical Properties of Old-Growth Forests in the Klamath Region, USA, in Northwest Science, 89(2), pages 170–181: The horizontal axis label for Figure 1 was incorrect. It should have shown “DBH class (cm)”. Additionally, the authors have reported that resurveys found mapping errors at a single plot (WHIS2). Removing this plot from spatial analyses did not change the patterns reported in the study.