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Keyword: succession

Recent shifts in shade tolerance and disturbance traits in forests of the eastern United States

Publications Posted on: August 19, 2019
Background: Current forests of the eastern USA have the potential to succeed in composition to more shade-tolerant species. However, long-term processes of transition from fire-tolerant tree species to fire-sensitive species and effects of current land use on forests may interfere with successional progression.

The hidden potential within soil seed banks

Science Spotlights Posted on: July 31, 2019
Wildfire and other disturbances to plant communities are becoming larger and more frequent across arid lands of the western U.S. Degradation caused by these disturbances affects the ability of these plant communities to deliver important food and shelter to wildlife. Understanding how to predict the presence of native seeds within the soil seed bank, and where there are abundant seeds of invasive species, will help land managers determine the regeneration potential within the seed bank and inform restoration planning to reestablish biodiversity and ecosystem function in disturbed areas. Wildfire and other disturbances to plant communities are becoming larger and more frequent across arid lands of the western U.S. Degradation caused by these disturbances affects the ability of these plant communities to deliver important food and shelter to wildlife. Understanding how to predict the presence of native seeds within the soil seed bank, and where there are abundant seeds of invasive species, will help land managers determine the regeneration potential within the seed bank and inform restoration planning to reestablish biodiversity and ecosystem function in disturbed areas.

The survival of Pinus ponderosa saplings subjected to increasing levels of fire behavior and impacts on post‐fire growth

Publications Posted on: May 30, 2019
Improved predictions of tree species mortality and growth metrics following fires are important to assess fire impacts on forest succession, and ultimately forest growth and yield. Recent studies have shown that North American conifers exhibit a ‘toxicological dose‐response’ relationship between fire behavior and the resultant mortality or recovery of the trees.

A reconceptualization of open oak and pine ecosystems of eastern North America using a forest structure spectrum

Publications Posted on: November 15, 2018
We present a reconceptualization of forests in eastern North America by differentiating the ecological characteristics of open oak (Quercus) and pine (Pinus) forests from closed successional and oldgrowth forests. Despite historical abundance of savannas and woodlands, the fundamental ecology of open forest ecosystems remains ill-defined when compared to either closed forests or grasslands.

Management and succession at the Lick Creek Demonstration/Research Forest, Montana

Publications Posted on: August 30, 2018
The Lick Creek Demonstration/Research Forest is one of those places in the West that many foresters may not be familiar with by name but by photographs. Posters depicting forest change over the years circulated widely from the 1980s to 2000s, following Forest Service General Technical Reports from Gruell et al. (1982) and Smith and Arno (1999).

Shrub cover and fire history predict seed bank composition in Great Basin shrublands

Publications Posted on: August 17, 2018
Dormant seeds in the soil are an important contribution to the regenerative potential of an area. Understanding factors that affect seed bank dynamics in arid regions provides insight into how communities respond to disturbance and environmental change.

Fortifying the forest: Thinning and burning increase resistance to a bark beetle outbreak and promote forest resilience

Publications Posted on: September 30, 2016
Fire frequency in low-elevation coniferous forests in western North America has greatly declined since the late 1800s. In many areas, this has increased tree density and the proportion of shade-tolerant species, reduced resource availability, and increased forest susceptibility to forest insect pests and high-severity wildfire.

FireWorks curriculum featuring ponderosa, lodgepole, and whitebark pine forests

Publications Posted on: May 12, 2016
FireWorks is an educational program for students in grades 1-10. The program consists of the curriculum in this report and a trunk of laboratory materials, specimens, and reference materials. It provides interactive, hands-on activities for studying fire ecology, fire behavior, and the influences of people on three fire-dependent forest types - Pinus ponderosa (ponderosa pine), Pinus contorta var.

User's Guide to Version 2 of The Regeneration Establishment Model: Part of The Prognosis Model

Publications Posted on: May 12, 2016
This publication describes how to use version 2 of the Regeneration Establishment Model, a computer-based simulator that is part of the Prognosis Model for Stand Development. Conifer regeneration is predicted following harvest and site preparation for forests in western Montana, central Idaho, and northern Idaho.

Wildland fire in ecosystems: effects of fire on flora

Publications Posted on: May 12, 2016
VOLUME 2: This state-of-knowledge review about the effects of fire on flora and fuels can assist land managers with ecosystem and fire management planning and in their efforts to inform others about the ecological role of fire.

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