Hankyu Kim, an ornithologist, conservation biologist and former Oregon State University doctoral student whose research advanced understanding of forest ecosystems and climate resilience, died suddenly in April 2026 from complications related to a blood infection.
Kim was a professor of conservation biology and ornithology at Kyung Hee University in South Korea and remained closely connected to the OSU College of Forestry and the H.J. Andrews Experimental Forest community long after completing his doctorate. From 2017 to 2021, he conducted his Ph.D. field research at the Andrews Forest, where he led the bird population crew and became known for both his scientific leadership and warm, generous spirit.
His research focused on how climate change affects bird populations and forest ecosystems. Kim published groundbreaking work demonstrating the ability of old-growth forests to buffer bird populations from the effects of climate change. He also completed the first long-term assessment of bird population trends in South Korea, helping establish an important foundation for avian conservation research in his home country.
Friends, colleagues and students remembered Kim as deeply kind, humble and full of contagious enthusiasm for science and conservation. Whether conducting fieldwork in the forests of Oregon or mentoring students in South Korea, he brought curiosity, compassion and joy. Members of the Andrews Forest community described him as “a bright light” whose presence made people feel welcomed and valued.
Kim is survived by his wife, Minsu, and their young daughter, Seoyoung.