“…Bill Reiners (University of Wyoming) was charged with presenting the historical lens through which past and contemporary understanding of relationships between ecosystem dynamics and biogeochemistry could be viewed, and with suggesting a conceptual framework by which new understandings could be constructed. He began by reviewing early ecosystem dynamics as conceptualized 30 years ago, citing Odum (1968), Bormann and Likens (1979), West et al (1981), Pickett and White (1985), and concluding that, “Conceptualizations of system dynamics were primarily derived from our ideas of chronic or acute impacts on more or less steady state systems, and the subsequent recovery of these systems to the original state.” This contrasted, he recognized, with today's recognition of much more complicated dynamics under the rubrics of “catastrophe theory” (Holling 1981) and “complex adaptive systems” (Norberg and Cumming 2008). Reiners reviewed some of the iconic heuristics associated with these rubrics, including intuitive ball‐and‐cup (Gunderson 2000), cusp‐manifold (Scheffer 2009), and adaptive cycles (Holling and Gunderson 2002).…”