Research

Below are broad research topics of interest.  For details, see my CV.

My Google Scholar profile is here.

Bark beetle outbreaks of western North America

• • Here is a review of remote sensing of insects and diseases of the western United States, published as a USDA Forest Service General Technical Report (2024).

  • Here is Version 4.1 (March 2025) of the gridded mortality area data set based on aerial surveys of the western United States, now updated to include a) 1997-2023; b) additional biotic agents of mortality beyond bark beetles, and drought-caused mortality; c) a similar data set for USFS Region 6 (Washington and Oregon) for 1947-2023. The Andrus et al. paper (Forest Ecology and Management, 2025) describes the methods and an analysis of outbreak characteristics. Version 4.1 is a slight update to Version 4.0; see the folder named "version_4.0_4.1_differences".

  • See here for a set of Powerpoint slides (42 Mb) illustrating the extent, causes (including climate change), and consequences of bark beetle outbreaks (note: emphasis on my research).

The impact of forest disturbances on ecosystem processes such as wildfire and carbon cycling

Recent assessments of climate change

• US Sixth National Climate Assessment (NCA6):  Chapter Lead Author, Northwest (ongoing)

• Coordinating Lead Author, Sixth Assessment Report of the Intergovernmental Panel on Climate Change, Working Group II (Impacts, Adaptation, and Vulnerability), North America chapter, 2022

• Idaho Climate-Economy Impacts Assessment, 2021

• City of Moscow Climate Change Impacts Assessment, 2020