Fig. 3. Changing salmon ratios within sites with multiple dated components, South–central Northwest Coast sites(salmon index: frequency of salmon bones/number of all fish bones). Site abbreviation key: Gln Cn—Glenrose Cannery; Wst 428—Westpoint KI 428; Wst 429—Westpoint KI 429; Cres Bc—Crescent Beach; Dec 169—Decatur Island; Tsaww—Tsawwassen; Duwam—Duwamish; Bay St—Bay Street; Brt Ac—Burton Acres. See Butler and Campbell (2004) for more site information.