Genetics/Bioinformatices

Using the existing rangewide genetic and demographic data, scientists from the USGS, USDA Forest Service, and University of Waterloo will assess the relative contributions of habitat and genetic connectivity to lek size and stability.

Molecular tagging is a new application of molecular genetic techniques to traditional mark-recapture methodology designed to address situations where traditional methods fail. In such studies, non-invasively collected samples (such as feces, feathers, or fur) are used as a source of DNA that is then genotyped at multiple loci such that each individual animal can be uniquely identified. Thus, each...

This goal of this study is to develop a spatially explicit habitat-population modeling framework to assess the viability of Gunnison sage-grouse and each of the seven populations (Gunnison Basin and six satellite populations).

Genetic analysis is increasingly used to understand ecosystem processes and inform conservation, management, and policy. I assist USGS researchers and their collaborators in the design, analysis, and interpretation of high-throughput genetic studies. Common applications include: detecting genes responsive to particular environmental stressors in a sentinel species or species of conservation...

Environmental DNA (eDNA) is organismal DNA that can be found in the environment. Environmental DNA originates from cellular material shed by organisms (via skin, excrement, etc.) into aquatic or terrestrial environments that can be sampled and monitored using new molecular methods. Such methodology is important for the early detection of invasive species as well as the detection of rare and...

Loss and fragmentation of sagebrush habitats are among the primary causes of decline in greater and Gunnison sage-grouse. A fundamental need for species conservation is to identify and subsequently maintain a set of connected populations. Landscape genetics combines the fields of population genetics and landscape ecology to investigate how landscape and environmental features affect connectivity...

US Geological Survey scientists and collaborators are using genetic information contained in sage-grouse feathers collected at leks to define the rangewide network of breeding populations.