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Keyword: common garden

Potential for maladaptation during active management of limber pine

Science Spotlights Posted on: September 12, 2016
Active management is needed to sustain healthy limber pine (Pinus flexilis) forests in the southern Rocky Mountains as they are threatened by the interaction of the mountain pine beetle (Dendroctonus ponderosae) epidemic, climate change, and the spread of the non-native pathogen that causes white pine blister rust disease (Cronartium ribicola). Movement of seedlings with disease resistance from northern to southern Colorado may result in planting failure. Identification of genotypes resistant to white pine blister rust in the southern Rockies is needed at the finer scale of a national forest scale rather than the region.       

Historical provenance study at Fort Valley Experimental Forest

Projects Posted on: August 24, 2016
Forest management will protect genetic integrity of tree species only if their genetic diversity is understood and considered in decision-making. Genetic knowledge is particularly important for species such as ponderosa pine that are distributed across wide geographic distances and types of climates. Researchers revisit an assisted migration study in an Arizona ponderosa pine forest after 100 years to assess genetic diversity, adaptation patterns, and improve forest management of ponderosa pine.

Sagebrush scent identifies species and subspecies

Science Spotlights Posted on: August 24, 2016
Big sagebrush (Artemisia tridentata) is the dominant plant species across much of the Western U.S. and provide critical habitat and food for many endemic species, including the threatened greater sage-grouse. Sagebrush habitat is imperiled due to disturbances and increased wildfire frequency due to exotic annual grasses. Identification of big sagebrush subspecies is difficult, but critical for successful restoration. Researchers discover that volatiles emitted by sagebrush species and subspecies differ in consistent ways and can be used to accurately identify plants.

Signals of speciation: Volatile organic compounds resolve closely related sagebrush taxa, suggesting their importance in evolution

Publications Posted on: July 15, 2016
Volatile organic compounds (VOCs) play important roles in the environmental adaptation and fitness of plants. Comparison of the qualitative and quantitative differences in VOCs among closely related taxa and assessing the effects of environment on their emissions are important steps to deducing VOC function and evolutionary importance.

Evolution of marginal populations of an invasive vine increases the likelihood of future spread

Publications Posted on: January 15, 2016
The prediction of invasion patterns may require an understanding of intraspecific differentiation in invasive species and its interaction with climate change. We compare Japanese honeysuckle (Lonicera japonica) plants from the core (100-150 yr old) and northern margin (< 65 yr old) of their North American invaded range to determine whether evolution during invasion increases the probability of future expansion.

Adaptive divergence at the margin of an invaded range

Publications Posted on: September 11, 2013
Invasive plant species threaten biological communities globally. However, relatively little is known about how evolutionary processes vary over the course of an invasion.

A strategy for maximizing native plant material diversity for ecological restoration, germplasm conservation and genecology research

Publications Posted on: June 25, 2013
One of the most important steps in planning a restoration project is careful selection of ecologically adapted native plant material. As species-specific seed zone maps are not available for most species in the Artemisia tridentata ssp.

Genecology and seed zones for Indian ricegrass collected in the Southwest US

Publications Posted on: October 03, 2012
Indian ricegrass (Achnatherum hymenoides [Roemer & J.A. Schultes] Barkworth) is a widely distributed, highly desirable native species in desert ecosystems in the western United States. Yet there are no studies linking genetic variation in Indian ricegrass with climate across major areas of its natural distribution.