Would it surprise you to know that there is a rigorous theory underlying the observation that in nature big organisms are much rarer than small ones? In a new paper, PhD student Lauren Barth and her advisor Prof. Gary Sprules review much of the research on the Biomass Size Spectrum, a theory of ecosystem structure and function based solely on the body size of organisms that has been a focus of investigation in the Sprules’ lab. Their paper “Surfing the biomass size spectrum: some remarks on history, theory, and application” was recently published in Canadian Journal of Fisheries and Aquatics Sciences.