Keith Bosley, of the National Marine Fisheries Service's Rockfish Habitat Group, uses stable-isotope chemical methods to determine food-web relationships between plankton and fish in Astoria Canyon. Image courtesy of Lewis and Clark 2001, NOAA/OER.
Keith Bosley, of the National Marine Fisheries Service's Rockfish Habitat Group, uses stable-isotope chemical methods to determine food-web relationships between plankton and fish in Astoria Canyon. Image courtesy of Lewis and Clark 2001, NOAA/OER.