I am a Seattle statistician/population modeler with three decades of experience developing passage, life-cycle, and population viability models for pacific salmon. I publish articles on salmon, Eulachon, and American shad, and plant and animal populations around the globe. I create tools to design research, monitoring, and evaluation programs. One such tool estimates the proportion of hatchery-origin fish on the spawning grounds using parentage-based tags. I developed methods to shrink population projection matrices to smaller dimensionality (model aggregation) and created a new framework to analyze transient dynamics. I introduced balancing to population ecology, which transforms a population projection matrix to account for the values of stages. I use balancing to aggregate models, measure transient dynamics, and make demographic statistics scale invariant. I continue to develop new skills, including GIS, machine learning, and neural networks.
