Short biography Professor of Biology, University of Alaska Anchorage, August 2004-present Director, Environment and Natural Resources Institute, University of Alaska Anchorage Education: Ph.D. Department of Rangeland Ecology and Management, Texas A&M, University, College Station, TX, 1985. Carbon and nitrogen cycling in native bunchgrass plants. The Welker Lab's research program centers on three main themes: Precipitation & Water Cycle Isotope Geochemistry: Quantifying continental-scale processes and patterns in the isotope geochemistry of precipitation, river and lake water as a means to understand the ecohydrology of landscapes and the recording of climate records in proxies such as ice cores, tree rings and speleothems. Wildlife, Food Web and Migration Ecology: Characterizing Arctic and Boreal carnivore and ungulate diets, landscape use and home ranges using isotope forensics and location information in the study of gray wolves, polar bears, caribou, white-fronted geese, tundraswans, seabirds and shore birds. High and Low Arctic Ecosystems and Climate Change: Quantifying experimental and observational water, carbon and N cycling responses at the plant and ecosystem-scale of polar semi-deserts, tussock and dry tundra responses to long-term warming, deeper snow and increases in summer precipitation.