Brown bear-sea otter interactions along the Katmai coast: terrestrial and nearshore communities linked by predation Author Monson, Daniel H Author Taylor, Rebecca L Author Hilderbrand, Grant V Author Erlenbach, Joy A Author Coletti, Heather A Author Kloecker, Kimberly A Author Esslinger, George G Author Bodkin, James L text Journal of Mammalogy 2023 2022-11-11 104 1 171 183 http://dx.doi.org/10.1093/jmammal/gyac095 journal article 10.1093/jmammal/gyac095 0022-2372 10681810

Table 1. —Age-at-death distributions (AADDs) based on sea otter carcasses recovered during beach surveys in Katmai National Park and Preserve, Alaska, in 2006–2015, and in western Prince William Sound (WPWS) before (1974–1989) and after the recovery (2010–2015) of sea otters from the Exxon Valdez oil spill. The bottom three rows denote the proportion of sea otters recorded in each age class: juveniles (0–1 years), prime-age (2–8 years), and old-age (≥9 years). aWe did not include age 0 in our Katmai population model because of low recovery rates of pups on beaches due to scavengers.

				Number of sea otter carcasses by survey year							WPWS
Age	2006	2007	2008	2009	2010	2012	2013	2014	2015	Total	1974–1989	2010–2015
0a 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Annual total Juvenile Prime-age Old-age	2 9 6 7 1 2 0 0 3 2 0 2 0 1 0 1 0 0 0 0 0 36 0.30 0.53 0.17	0 5 2 3 1 2 5 4 4 1 2 3 2 2 0 0 3 0 0 0 0 39 0.13 0.54 0.33	3 4 2 1 0 2 4 4 2 6 0 0 0 0 0 1 1 0 0 0 0 30 0.23 0.50 0.27	2 0 0 1 1 2 4 2 4 0 2 0 1 1 0 0 0 0 0 0 1 21 0.09 0.67 0.24	1 3 0 1 2 3 2 3 1 3 1 4 1 0 0 0 2 0 0 0 0 27 0.15 0.44 0.41	0 2 1 2 2 3 3 2 0 0 1 3 1 0 2 1 0 0 0 0 0 23 0.09 0.56 0.35	8 5 3 5 3 6 5 3 6 8 3 4 1 1 1 0 1 0 0 0 0 63 0.21 0.49 0.30	10 4 1 2 2 3 2 3 3 4 3 2 2 1 1 0 0 0 0 0 0 43 0.33 0.37 0.30	3 4 1 1 1 0 0 0 3 2 2 2 0 1 0 0 0 0 0 0 0 20 0.35 0.30 0.35	29 36 16 23 13 23 25 21 26 26 14 20 8 7 4 3 7 0 0 0 1 302 0.21 0.49 0.30	85 13 2 5 7 4 2 11 11 13 18 14 6 7 5 4 3 1 2 0 2 215 0.46 0.20 0.35	91 33 7 7 5 11 5 7 11 24 17 11 16 7 5 3 2 1 0 0 0 263 0.47 0.20 0.33