The scientists from the Forest and Rangeland Ecosystem Science Center capitalize on their diverse
expertise to answer critically important scientific questions shaped by the equally diverse environments
of the western United States. FRESC scientists collaborate with each other and with partners to provide
rigorous, objective, and timely information and guidance for the management and
conservation of biological systems in the West and worldwide.
In the Spotlight
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Golden Eagle Occupancy and Abundance in the Diablo Range, Calif.
The Altamont Pass Wind Resource Area in the northern Diablo Range supports a dense population of golden eagles. To find out how the overall population is affected by...
Enhanced Energy Development Mitigation Techniques Benefit Sage-Grouse
With the development of oil and gas reserves in sagebrush habitats has come the increased need for on-site mitigation that is effective at reducing impacts to...
Modeling Aspen Response to Climate Change and Altered Fire Regimes
Quaking aspen supports a diverse array of plant and animal species in the Great Basin. Altered fire regimes and climate change are likely to influence future aspen...
New Study: Using Beaver to Restore Ecosystem Functions
Declines in salmon and trout populations in the Skykomish watershed, WA are a concern to the Tulalip Tribes who depend on this historical fishing area. Habitat...
Stable Isotopes Reveal Nitrogen Cycling Patterns in Soils Worldwide
The influence of climate on soil nitrogen cycling is important for plant growth and carbon storage, but there is limited information on how nitrogen cycling varies with...
Plant Responses to Elevated Temperature and Drought in the Mojave Desert
Climate models predict temperature increases and prolonged drought in many arid areas which may affect vegetation response. Researchers from the USGS and other...
specializes in studying and monitoring wildlife, especially raptors, to help understand their ecology, estimate demographic characteristics and population connectivity, and track their long-distance movements. Katzner also uses GPS-GSM telemetry systems and GIS analyses to track birds of prey to understand how renewable energy development can be best managed to reduce risk to birds from turbines and solar fields. Katzner previously conducted research at the University of West Virginia and joined FRESC in 2014. He conducts research throughout North America and in central Asia.
Bird Movements and Migration
are amazing. Every year, billions of birds make long-distance movements from breeding grounds to wintering grounds. If we want to protect these birds, we need to understand why and how they move, and why they go where they go. Katzner’s team studies the behaviors, drivers, and endpoints of migration of birds world-wide. GPS telemetry systems or light-level geolocators can reveal the detailed movements of these remarkable birds. Additionally, stable isotope and genetic tools can provide more broad-scale information.