Winter Distribution of Chum Salmon Related to Environmental Variables in the North Pacific

摘要

For many years, researchers have hypothesized that environmental factors are related to wintertime ocean distribution of chum salmon (e.g. Shimazaki and Nakayama 1975). In this paper, we analyzed relationships between latitude, temperature, and sea surface salinity, and the number of chum salmon caught during one-hour surface trawl operations. Data were collected during winter salmon research cruises by Japanese research scientists onboard the RV Kaiyo maru in the North Pacific (1992, 1996, 1998, and 2006) and Bering Sea (1998).