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Keyword: population genetics

Population Genetics of Boise Basin Bull Trout (Salvelinus confluentus)

Publications Posted on: June 22, 2020
We analyzed the population genetic structure of bull trout (Salvelinus confluentus) in the Boise River Basin, Idaho. We determined the influence of contemporary (including anthropogenic) and historic factors on genetic structure, taking into accountexisting data on bull trout habitat patches in this basin.

National Genomics Center for Wildlife and Fish Conservation

Pages Posted on: June 01, 2020
Non-Invasive Genetic Sampling and Population Genetics

Putting the 'landscape' in landscape genetics

Publications Posted on: March 04, 2020
Landscape genetics has emerged as a new research area that integrates population genetics, landscape ecology and spatial statistics. Researchers in this field can combine the high resolution of genetic markers with spatial data and a variety of statistical methods to evaluate the role that landscape variables play in shaping genetic diversity and population structure.

Genetic diversity and pathogenicity-related genes of the fungal pathogen associated with oak mortality in South Korea

Projects Posted on: August 20, 2019
Since 2004, extensive mortality of oak (Quercus mongolicae) has been occurring in South Korea. This oak mortality is associated with a fungus (Raffaelea quercus-mongolicae), which is vectored by a wood-boring ambrosia beetle (Platypus koryoensis). High-resolution genetic markers were used to assess the genetic diversity of 54 fungal isolates from five South Korean provinces, and results suggest that this fungal pathogen was introduced to South Korea. Genomic sequencing of the fungus provided evidence of genes associated with causing tree disease, and allowed comparisons with related fungi.

Forb common garden study to inform seed transfer guidance for restoration

Projects Posted on: July 31, 2019
Seed-grown plants from multiple populations of three focal forb species will planted in gardens across the Great Basin in order to capture important information that affects where seeds are sourced for restoring native plants at specific locations.

Twenty-five years after: Post-introduction association of Mecinus janthinus s.l. with invasive host toadflaxes Linaria vulgaris and Linaria dalmatica in North America

Publications Posted on: July 10, 2018
Linaria vulgaris, common or yellow toadflax, and Linaria dalmatica, Dalmatian toadflax (Plantaginaceae), are Eurasian perennial forbs invasive throughout temperate North America. These Linaria species have been the targets of classical biological control programmes in Canada and the USA since the 1960s.

Distribution, genetic diversity, and prediction of areas at risk for the invasive brown root-rot pathogen (Phellinus noxius)

Science Spotlights Posted on: August 16, 2016
Brown root rot (caused by an invasive pathogen, Phellinus noxius) impacts diverse tree species in tropical and subtropical areas, including eastern/southeastern Asia, Australia, and Pacific islands. Ongoing genetic studies have determined genetic groups within the species, identified genes associated with pathogenicity of diverse tree hosts, and predicted geographic areas at risk from invasion by different genetic groups of the invasive pathogen.

Investigating new threats from emerging invasive plants

Science Spotlights Posted on: October 05, 2015
Forest Service scientists and partners developed an aggressive approach to investigate the biological and habitat characteristics of sickleweed (Falcaria vulgaris), a rapidly expanding invasive plant recently introduced into the grasslands of the northern Great Plains. Documenting patterns of invasion before species becomes widespread and identifying traits that may contribute to the success of recent invaders can increase our knowledge of factors influencing invasibility.

Landscape location affects genetic variation of Canada lynx (Lynx canadensis)

Publications Posted on: April 21, 2015
The effect of a population's location on the landscape on genetic variation has been of interest to population genetics for more than half a century. However, most studies do not consider broadscale biogeography when interpreting genetic data.

Projecting outcomes for high elevation pine populations threatened by a non-native disease

Projects Posted on: December 03, 2014
White pine blister rust (WPBR) is a lethal disease threatening five-needle pine species in the Northern Rocky Mountains. Through the use of mechanistic models, we are developing mitigation and prevention strategies.