- Metric Name:  Tree Mortality – Past 5 Years and Past 1 year

- Data Vintage:  2021

- Unit Of Measure: Percent of 30m pixel (absolute, not relative, value)

The dead tree canopy cover fraction change from the Mortality Magnitude Index (MMI) for eDaRT events. This metric is provided to complement data (in terms of spatial resolution and canopy cover loss estimates) available from the Region 5 Insect and Disease Survey that performs aerial detection monitoring in support of tracking tree mortality that includes affected hosts and agents (available at: https://www.fs.usda.gov/detail/r5/forest-grasslandhealth/?cid=fsbdev3_046696).- Creation Method:  Insect- and disease-caused tree mortality was compiled at the 30 m scale from the Ecosystem Disturbance and Recovery Tracker (eDaRT; Koltunov et al. 2020), described in the Introduction. This metric represents the 2021 status of cumulative tree mortality occurring over the years 2017 to 2021. An additional version represents the mortality of the last 1 year (2021). Note that tree mortality which, since its occurrence, was affected by fire or land management activities has been removed.

- Credits:  Region 5, MARS Team
USDA Forest Service - Region 5 and Pacific Southwest Research Station (PSW)