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Keyword: five-needle pines

Back from the brink: Framework to sustain resilience to species at risk

Science Spotlights Posted on: August 14, 2019
The Regeneration for Resilience (R4R) framework provides a decision structure to prioritize limited resources and utilize seedling planting and natural regeneration management to offer the best likelihood of success in positioning stands and landscapes to support resilience self-sustaining tree populations that are threatened by invasive pests. Effective management of forest regeneration dynamics can increase forest resilience and adaptive capacity to mitigate impacts of invasive species.

The big picture on whitebark pine

FS News Posted on: August 31, 2018
Throughout the western United States, whitebark pine is experiencing high mortality, leading to concern about long-term viability of whitebark pine and other species that depend on it. Two new studies of whitebark pine in the western U.S. show that this species continues to die-off in alarming numbers and identifies locations where forest managers may be able to encourage growth of young whitebark pines.

A landscape-level assessment of whitebark pine regeneration in the Rocky Mountains, USA

Publications Posted on: August 30, 2018
Whitebark pine (Pinus albicaulis Engelm.) has recently experienced high mortality due to multiple stressors, and future population viability may rely on natural regeneration. We assessed whitebark pine seedling densities throughout the US Rocky Mountains and identified stand, site, and climatic variables related to seedling presence based on data from 1,217 USDA Forest Service Forest Inventory and Analysis plots.

Landscape-scale assessments of whitebark pine

Science Spotlights Posted on: August 23, 2018
Forest inventory data show that more than half of all standing whitebark pine trees in the U.S. are dead. Regeneration of whitebark pine is widespread, especially in lodgepole pine stands, which suggests that active management of whitebark pine should target mixed-species stands to take advantage of natural regeneration. 

Breeding and genetic resources of five-needle pines: Growth, adaptability, and pest resistance

Publications Posted on: August 01, 2018
This volume presents 29 overview and research papers on the breeding, genetic variation, genecology, gene conservation, and pest resistance of five-needle pines (Pinus L. subgenus Strobus Lemm.) from throughout the world. Overview papers provide information on past and present research as well as future needs for research on white pines from North America, Europe, and Asia.

Whitebark pine distribution and regeneration

Media Gallery Posted on: June 04, 2018
Whitebark pine (Pinus albicaulis) is an ecologically important species in high-altitude areas of the West due to the habitat and food source it provides for Clark’s nutcrackers, red squirrels, grizzly bears, and other animals. Whitebark pine stands have recently experienced high mortality due to wildfire, white pine blister rust, and a mountain pine beetle outbreak, leading to questions about the species’ long-term viability. This project seeks to quantify the current distribution and regeneration status of whitebark pine throughout its US range.

Whitebark pine distribution and regeneration in mixed-species stands

Projects Posted on: June 01, 2018
Whitebark pine (Pinus albicaulis) is an ecologically important species in high-altitude areas of the West due to the habitat and food source it provides for Clark’s nutcrackers, red squirrels, grizzly bears, and other animals. Whitebark pine stands have recently experienced high mortality due to wildfire, white pine blister rust, and a mountain pine beetle outbreak, leading to questions about the species’ long-term viability. This project seeks to quantify the current distribution and regeneration status of whitebark pine throughout its US range.

Pinus albicaulis Engelm. (whitebark pine) in mixed-species stands throughout its US range: Broad-scale indicators of extent and recent decline

Publications Posted on: March 22, 2018
We used data collected from >1400 plots by a national forest inventory to quantify population-level indicators for a tree species of concern. Whitebark pine (Pinus albicaulis) has recently experienced high mortality throughout its US range, where we assessed the area of land with whitebark pine present, size-class distribution of individual whitebark pine, growth rates, and mortality rates, all with respect to dominant forest type.

Preempting the pathogen: Blister rust and proactive management of high-elevation pines

Publications Posted on: April 27, 2017
White pine blister rust has been spreading through western forests since 1910, causing widespread mortality in a group that includes some of the oldest and highest-elevation pines in the United States. The disease has recently reached Colorado and is expected to travel through the southern Rockies.

IUFRO joint conference of five-needle pine, rusts of forest trees, and genomics groups

Science Spotlights Posted on: August 19, 2015
World–wide experts in genetics and genomics of five-needle pines and rusts of forest trees convened in Fort Collins, Colorado, for their first joint conference to share cutting edge methods and emerging technologies to sustain healthy forest ecosystems.   

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