It is worthwhile to start by pointing out that macroalgae, 

 like Fucus , Ascoph.yl 1 um , or the mixed Red Algae analyzed, 

 are wel 1 estab I i shed as showing seasonal variability in 



their concentrations of many trace elements; we would not, 

 then, expect to be able to compare directly collections 

 taken at different times. Much the same is proving to be 

 true of mussels (Bowen et al , to be published). Examples 

 of this phenomenon in the case of macroalgae are 

 comparing the samples from station 1 (Table 14A) 

 late October 1976 with those collected early May 



to be seen 

 col 1 ected 

 1977: 



Fall 



Chondrus 



Fui 



1T?( 



icus 



7n gae 



25.2 137^5. 1.07 239,240p^ 



13.4 " ; 1.9 

 47.9 " ; 2 



Spring 



Chondrus 

 Fucus 

 Red Algae 



It appears that the seasonal change has led to increased 

 137cs in Chondrus , decreased in the Red Algae, and no 

 change in Fucus , while each spring sample shows lower Pu 



If we 

 at ab 

 diffe 

 fall- 

 compa 

 curre 

 col 1 e 

 and b 

 Ascop 



137CS 

 si te 

 s p r i n 

 at s i 

 Al gae 

 site 

 that 

 betwe 

 of th 

 we me 

 The P 

 L i V i n 

 stanc 

 been 



compa 

 out th 

 rences 

 col 1 ec 

 red to 

 nt fro 

 cted F 

 e h i n d 

 hyl 1 um 



than 



1 are 



g were 

 te 2, 

 (a CO 



2 both 



the ge 

 en the 

 ese sa 

 asured 

 u data 

 gston 

 e , exc 

 charac 



re g 

 e sa 



tha 

 ted 



sit 

 m th 

 ucus 

 the 

 , an 

 are 

 al so 



ri c 

 and 

 11 ec 



in 



nera 

 two 



mpl e 

 tha 

 can 



and 



eeds 



teri 



iven spe 

 me time, 



t charac 

 Fucus or 

 e 2 , w h i 

 e P i 1 g r i 



from si 

 bar in P 

 d Red Al 

 those fr 



richer 

 her by a 

 s i g n i f i c 

 t i n of 

 fall and 



in this 



sites, 

 s c n t a i 

 t were s 



be comp 

 Bowen (1 



the ran 

 Stic of 



CI es 

 how 



teri 

 Asc 



col 

 ever 



ze t 

 ophy 



1 ected 

 , then 



he site 

 1 1 um f r 



ch w 

 m 1 

 te 1 

 1 ymo 

 gae 

 cm s 

 in P 

 1 mos 

 antl 

 mixe 



i n 



mix 



It 

 ned 

 uffi 

 ared 

 976) 

 ge t 

 fall 



e no 

 reac 

 com 

 uth 

 are 

 ite 

 u . 

 t a 

 y ri 

 d ge 

 spri 



ture 

 shou 

 cone 

 cien 

 wi t 

 ; no 

 hat 

 out 



w belie 

 tor out 

 pared t 

 Harbor, 

 s i g n i f i 

 2, and 

 At site 

 factor 

 Cher in 

 nera ) w 

 n g ; it 



are no 

 1 d be p 

 entrat i 

 tl y el e 

 h those 

 ne of t 

 those d 

 c n t a m i 



at 

 we 



s . 

 om 



ve 

 fall 

 si 



Si 

 cant 

 the 



3 F 

 of 3 



Pu 

 ere 

 is, 

 t tr 

 oint 



ons 

 vate 

 sum 

 he s 

 ata 

 nati 



i f f er 

 xpect 

 Examp 

 ite 1 

 s mos 

 . or 

 te 3, 

 te 1 

 ly ri 

 first 

 ucus 



in 1 

 also. 



riche 

 howev 



uly c 

 ed ou 



of an 

 d to 

 m a r i z 

 ampl e 

 p r e d i 

 on in 



e n t sit 

 to see 



1 es are 

 ( F i g u r 



tly up- 

 spring- 



downst 

 Fucus , 

 c h e r i n 



two fr 

 col 1 ect 

 37Cs th 

 The R 

 r in P u 

 er, pos 

 omparab 

 t that 

 y nucl i 

 cause a 

 ed by 

 s , for 

 ct to h 



the 19 



es 



e 3) 



ream 



1 n 



om 

 ed 

 an 

 ed 



at 

 s i b 1 e 



le 



none 

 de 

 1 arm. 



i n- 

 ave 

 70- 



38 



