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Keyword: tree mortality

Inferring energy incident on sensors in low-intensity surface fires from remotely sensed radiation and using it to predict tree stem injury

Publications Posted on: April 09, 2019
Remotely sensed radiation, attractive for its spatial and temporal coverage, offers a means of inferring energy deposition in fires (e.g. on soils, fuels and tree stems) but coordinated remote and in situ (in-flame) measurements are lacking.

Impacts of the mountain pine beetle on sawmill operations, costs, and product values in Montana

Publications Posted on: November 20, 2018
Over the past 20 years, the mountain pine beetle (Dendroctonus ponderosae) has caused considerable tree mortality across the Rocky Mountain region of the western United States. Although the operational and cost impacts of dead timber are generally well known in the sawmill industry, there remains a need to better understand the impact of large-scale outbreaks on the industry at local and regional scales.

Condition of live fire-scarred ponderosa pine twenty-one years after removing partial cross-sections

Publications Posted on: October 05, 2018
Concern over the effects of removing fire-scarred partial cross-sections may limit sampling of live ponderosa pine to reconstruct fire history. We report mortality rates for ponderosa pine trees 20 to 21 years after removing fire-scarred partial cross-sections to reconstruct fire history.

Supplement to The User's Guide for The Stand Prognosis Model-version 5.0

Publications Posted on: August 01, 2018
Differences between Prognosis Model versions 4.0 and 5.0 are described. Additions to version 5.0 include an event monitor that schedules activities contingent on stand characteristics, a regeneration establishment model that predicts the structure of the regeneration stand following treatment, and a COVER model that predicts shrub development and total canopy cover.

Old tree responses to forest thinning

Projects Posted on: April 10, 2018
Long-term growth responses to stand density reduction treatments in mature pine forests of California

Fire-induced tree mortality

Projects Posted on: April 09, 2018
Mortality reconsidered: Testing and extending models of fire–induced tree mortality across the United States.

California tree mortality

Projects Posted on: April 09, 2018
Changes in fuel loading and conifer mortality risk factors due to bark beetles and drought in California.

Tree mortality estimates and species distribution probabilities in southeastern United States forests

Publications Posted on: October 05, 2017
Stresses to trees under a changing climate can lead to changes in forest tree survival, mortality and distribution.  For instance, a study examining the effects of human-induced climate change on forest biodiversity by Hansen and others (2001) predicted a 32% reduction in loblolly–shortleaf pine habitat across the eastern United States.  However, they also predicted an average increase in area of 34% for oak-hickory forests and a 290% increase

Forest fuels and predicted fire behavior in the first 5 years after a bark beetle outbreak with and without timber harvest (Project INT-EM-F-11-04) [Chapter 12]

Publications Posted on: January 12, 2017
Unprecedented levels of tree mortality from native bark beetle species have occurred in a variety of forest types in Western United States and Canada in recent decades in response to beetle-favorable forest and climatic conditions (Bentz 2009, Meddens and others 2012).

Estimating extent of mortality associated with the Douglas-fir beetle in the Central and Northern Rockies

Publications Posted on: January 10, 2017
Data collected from Douglas-fir stands infected by the Douglas-fir beetle in Wyoming, Montana, Idaho, and Utah, were used to develop models to estimate amount of mortality in terms of basal area killed. Models were built using stepwise linear regression and regression tree approaches. Linear regression models using initial Douglas-fir basal area were built for all study sites but produce low precision estimates.