. Bulletin. Science; Natural history; Natural history. Fig. 3. Changes in mean density (±1 ) of four size classes and size frequency of abalone on boulder fields (N = sample size). The relative weight of individuals fluctuated during the study period (Fig. 4B). Mean weights were significantly different among years (Kruskal-Wallis, H = 39,5, N = 405, df = 5, P < ): 1989 weights, which averaged above predicted weight, were significantly different fi-om all other years, which averaged below predicted weight (Tukey's test, P < ). Mean relative weight of abalone 70 mm, w
. Bulletin. Science; Natural history; Natural history. Fig. 3. Changes in mean density (±1 ) of four size classes and size frequency of abalone on boulder fields (N = sample size). The relative weight of individuals fluctuated during the study period (Fig. 4B). Mean weights were significantly different among years (Kruskal-Wallis, H = 39,5, N = 405, df = 5, P < ): 1989 weights, which averaged above predicted weight, were significantly different fi-om all other years, which averaged below predicted weight (Tukey's test, P < ). Mean relative weight of abalone 70 mm, which averaged below predicted weight (T-test, T = , df= 192, P ). Surface seawater temperatures were elevated above normal levels during all years of the study (Fig. 5). Average annual temperature anomalies were signifi- cantly different among years (Kruskal-Wallis, H = , N = 84, df = 6, P < ) and varied from a mean of °C above average for 1987, 1988, 1990, 1992 and 1993, which were not significantly different from each other, to a mean of °C above average in 1989 and 1991 (Tukey's test, all P < ). Mean relative weights were significantly negatively correlated with mean winter temperature anomalies in 1987-1992 (r = , N = 6, P ).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Southern California Academy of Sciences. Los Angeles, Calif. : The Academy
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