Reference citation: MATTSON, D.J., S.R. PODRUZNY, AND M.A. HAROLDSON. 2005. Consumption of pondweed rhizomes by Yellowstone grizzly bears. Ursus 16:41-46.
Source citation: Gunther KA et al. 2014 Dietary breadth of grizzly bears in the Greater Yellowstone Ecosystem. Ursus 25(1):60-72
