The evolution of a trading zone: a case study of the turtle excluder device

This paper explores the evolution of a trading zone by organizing the case study of turtle excluder devices within the model proposed by Collins et al. (2007). The case study offers evidence that trading zones do evolve and that the concepts of enforced and fractionated trading zones hold practical utility for describing and defining the complexities of actual exchanges. In this case a trading zone evolved from enforced to fractionated and ultimately diverged into two trading zones. For each step of the evolution I describe the forces that drove these transitions. Finally, I present an adapted trading zone model that is conceptually a better fit for the turtle excluder device case study.     

Bycatch: interactional expertise, dolphins and the US tuna fishery

The burgeoning field of studies in expertise and experience (SEE) is a useful theoretical approach to complex problems. In light of SEE, examination of the controversial and well known case study of dolphin bycatch in the US tuna fishery, reveals that effective problem-solving was hindered by institutional tensions in respect of decision-making authority and difficulties with the integration of different expertises. Comparing the profiles of four individuals, who played distinct roles in the problem-solving process, I show that (1) to address a complex problem, a suite of contributory expertises—rarely found in one individual—may be required; (2) formal credentials are not a reliable indicator of who possesses these necessary expertises; (3) interactional expertise and interactive ability are useful tools in combining the contributory expertises of others to yield a desirable collective outcome; and (4) the concepts of contributory expertise and no expertise are useful tools for understanding the actual contribution of various parties to the problem-solving process.