. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. COLONY GROWTH OF POLYCLIM \l 89 6000 -i " 5000 S S 4000 < | 3000 o | 2000 •I 1000 u o -. 0 I I I 12 18 24 Colony Age (months) Figure 2. Mean growth trajectory ofPolyclinum planiim. A quadratic regression provides a significant fit to the data ()' = + - ; r = ; / = ; df = 17; P < ). Numbers indicate the number of observations included in each age class, error bars are standard deviations, and the horizontal dashed line indicates the maximum size (colony-silhouette area in mnr)
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. COLONY GROWTH OF POLYCLIM \l 89 6000 -i " 5000 S S 4000 < | 3000 o | 2000 •I 1000 u o -. 0 I I I 12 18 24 Colony Age (months) Figure 2. Mean growth trajectory ofPolyclinum planiim. A quadratic regression provides a significant fit to the data ()' = + - ; r = ; / = ; df = 17; P < ). Numbers indicate the number of observations included in each age class, error bars are standard deviations, and the horizontal dashed line indicates the maximum size (colony-silhouette area in mnr) of the growth trajec- tory. The single outlier at month 23 was not included in the curve-fitting analysis. Discrepancies between numbers of colonies indicated for each age class (month) on this figure compared to Figure 7 are due to the fact that I was typically able to map all colonies at my sites each month, even with marginal tide conditions, but I was not able to photograph all colonies in months with marginal tides. to granitic substrates below m MLLW(Mean Lower Low Water tide) and are most abundant in areas where granitic outcrops covered by surfgrass (Phyllos- padix sp.) are protected from direct wave action. The highest density of P. plamim I encountered during pre- liminary surveys prior to establishing my study sites was 95 colonies in a single : quadrat, though the mean of colonies per quadrat (SD = colo- nies; n = 45 quadrats surveyed in the intertidal zone at HMS) was more representative of P. plamim den- sities at HMS. I established three study sites, each about 1 m:, at m MLLW; all had P. plamim colonies present at the beginning of the study. The sites were within 10 m of each other and all of them had a dense canopy of surf- grass covering a mosaic of encrusting organisms, foliose algae, and bare rock surfaces. The three sites were on the inshore side of massive granitic outcroppings along the outermost reaches o
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
