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Keyword: limber pine

Proactive limber pine conservation strategy for the Greater Rocky Mountain National Park Area - an overview

Publications Posted on: October 01, 2020
Ecological condition and context determine the likelihood of success of management interventions to mitigate impacts of white pine blister rust (WPBR) (Schoettle et al. 2019a). In populations heavily impacted by WPBR, the remaining seed trees may be too few to support natural regeneration even with management intervention.

Example SDI-based prescriptions: Treatment prescriptions for commercial harvest units, Trout West Fuels Reduction Project, Manitou Experimental Forest

Publications Posted on: December 23, 2019
The sites described below are located in Ponderosa pine Forest Type on the Manitou Experimental Forest. The sites are bounded by meadows along Trout Creek on the west, Hotel Gulch, on the south, Missouri Gulch on the north, and the Ridgewood subdivision on the east. The area consists of gentle west-sloping terrain intersected by a series of small east-west ridges. No live streams exist in the area. Elevations range from 7,700 to 8,000 ft.

Is it southwestern white pine (Pinus strobiformis), limber pine (P. flexilis), or a hybrid?

Projects Posted on: October 05, 2018
Both southwestern white pine and limber pine are threatened by the non-native pathogen Cronartium ribicola that causes the lethal disease white pine blister rust. Identifying genetic resistance to white pine blister rust in the pines and planting seedlings with those resistance traits are critical components of proactive and restoration strategies to conserve and sustain the species.

Limber Pine and White Pine Blister Rust Monitoring and Assessment Guide for Rocky Mountain National Park

Publications Posted on: May 31, 2018
Limber pine, designated by Rocky Mountain National Park (RMNP) as a Species of Management Concern, is a keystone species that maintains ecosystem structure, function, and biodiversity.

Effects of climate change on forest vegetation in the northern Rockies [Chapter 5]

Publications Posted on: October 04, 2017
Increasing air temperature, through its influence on soil moisture, is expected to cause gradual changes in the abundance and distribution of tree, shrub, and grass species throughout the Northern Rockies, with drought tolerant species becoming more competitive. The earliest changes will be at ecotones between lifeforms (e.g., upper and lower treelines).

The growing knowledge base for limber pine - recent advances

Publications Posted on: January 10, 2017
Progress is being made to build the science foundation for effective limber pine management. The power of repeated monitoring assessments now provides valuable condition trends for limber pine (Smith et al. 2013, Cleaver et al. 2015). In Canada, the proportion of dead limber pine increased from 2003-2004 and 2009 and WPBR infection increased from 33% to 43% putting some populations at risk for extirpation (Smith et al. 2013).

Carbon costs of constitutive and expressed resistance to a non-native pathogen in limber pine

Publications Posted on: October 25, 2016
Increasing the frequency of resistance to the non-native fungus Cronartium ribicola (causative agent of white pine blister rust, WPBR) in limber pine populations is a primary management objective to sustain high-elevation forest communities. However, it is not known to what extent genetic disease resistance is costly to plant growth or carbon economy.

Southern Rockies Rust Resistance Trial (SRRRT)

Projects Posted on: October 24, 2016
The Southern Rockies Rust Resistance Trial (SRRRT) was initiated in 2013 to verify the stability of genetic resistance to white pine blister rust identified during artificial screening tests for limber and Rocky Mountain bristlecone pines conducted in collaboration with Dorena Genetic Resource Center (Cottage Grove, OR). Over 700 seedlings were outplanted in the fall 2013 and another 700 seedlings in spring 2014. White pine blister rust is common in the forests in and around the SRRRT site providing a natural source of inoculum to the seedlings. The seedlings will be periodically assessed for signs and symptoms of white pine blister rust over the next 10 years – disease symptoms were first noted in 2016.

Range-wide vulnerability of limber pine: White pine blister rust resistance and climate interactions

Projects Posted on: October 21, 2016
Forest surveys alone cannot predict species vulnerability as they cannot determine if the remaining healthy trees are at risk for disease or if they have heritable genetic resistance to support future populations. This project takes range-wide common garden (198 families) and artificial inoculation with Cronartium ribicola (causal agent of white pine blister rust) in order to better undertand host population vulnerability and sustainability.

Genetic mapping of Pinus flexilis major gene (Cr4) for resistance to white pine blister rust using transcriptome-based SNP genotyping

Publications Posted on: October 04, 2016
Linkage of DNA markers with phenotypic traits provides essential information to dissect clustered genes with potential phenotypic contributions in a target genome region. Pinus flexilis E. James (limber pine) is a keystone five-needle pine species in mountain-top ecosystems of North America. White pine blister rust (WPBR), caused by a non-native fungal pathogen Cronartium ribicola (J.C.