Bill is studying the effects of large-scale disturbance on an ecosystems condition. He received his master’s degree 15 years ago from the University of Washington-Seattle, where he developed a benthic index of biotic integrity (B-IBI) for assessing the ecological condition the Puget Sound lowland streams disturbed by urbanization. This model uses aquatic macroinvertebrates to assess stream biotic health and is currently being used by several Puget Sound counties and municipalities to determine stream and watershed health. Since his graduation, he has worked on the development of hydrogeomorphic functional assessment models (HGM) for rivers and wetlands in Alaska, California, Colorado, Maryland, New Mexico, North Dakota, and Washington. The HGM is an approach to assessing functions of aquatic systems that have been disturbed by a wide range of land use practices. These models are used to facilitate the permit process for the Clean Water Act and to ensure successful mitigation prioritization, implementation, and monitoring. In addition to modeling, he has spent the last 15 years working as a wetland and stream consultant to assist private and public clients with policy development, permit assistance, mitigation design and monitoring, and natural resources construction monitoring to ensure permit compliance. Bill is currently pursuing a Ph.D. that will adapt the tools he has used during and after his master’s degree to assess and monitor the effects of climate change on ecosystem condition at a sub-regional scale. Ideally these new tools will assist land managers and decision makers negotiate the complex interactions of global-scale disturbances on local ecosystem processes.