HALIMEDA INCRASSATA 



CO 

 CO 



< 



>- 

 a: 

 o 



cr 



CO 



HALIMEDATRIAL and EPIHALIMEDATRIAL 



CO 

 CO 



< 



>- 



Q 



CO 



"2000 0400 1200 2000 



OLD 



TIME OF DAY 



HALIMEDATETRAACETATE 



(10)1 1(9) 

 77777A V777A V7m 



tP ^ Q 



(10) 



" 



(16) 



OLD 



TIME OF DAY 



CO 2 



Q 

 O 



Figure 6. The concentration (X+1SE) of halimedatrials 



(halimedatrial and epihalimedatrail combined) (top panel) 

 and halimedatetraacetate (bottom panel) in newly forming 

 segments of Halimeda incrassata as a function of time of day 

 (=age). Concentration is expressed as a percentage of the 

 ash-free-dry mass of the plant portions extracted. The 

 histograms on the right combine all small and unpigmented 

 segments (2000-0400 hr) as tips, all new but pigmented 

 segments (0800-1800 hr) as young segments, and all mature 

 and heavily calcified segments (at least several days old) 

 as old segments. Hatched bars below the histograms connect 

 segment types that do not differ significantly (p>.05, 

 Kruskal-Wallis Test and a nonparametric parallel of the 

 Student-Newman-Keuls Test). Numbers in parentheses show N 

 for each mean; vertical bars show +1SE. 



382 



