Hiroyuki Matsuda is a professor at Yokohama National University. His research encompasses adaptive management and co-management of marine protected areas, risk analysis and game theory. He is the author of two Japanese textbooks on ecology, one of which focuses on the science and ecosystem management of fisheries. His theoretical work on fisheries management has resulted in new ideas, including the “cyclic advantage model” of sardine-anchovy-chub mackerel, in which Matsuda proposed a hypothesis for small pelagic fish stock fluctuations and “target switching”, a novel multi-species management strategy. He is the president of the Ecological Society of Japan (2012-2013).