the offsh 

 at each s 

 traps , th 

 the 6 and 



Vari o 

 total of 

 height we 

 determine 

 bif urcati 

 branch di 

 cal i cal d 

 coral 1 i te 

 c o r a 1 1 i t e 

 branch si 

 rel ati ve 



Growt 

 (1981). 

 plastic b 

 periodica 



The f 

 colonies; 

 s i tes . A 

 by placin 

 The decap 



ore r 



i te , 

 ermog 



80 m 

 us me 

 37 co 

 re me 

 d: ti 

 on) , 

 amete 

 iamet 

 ) , in 



and 

 ze wa 

 tip 1 

 h rat 

 Li nea 

 ands 



I ly w 

 aunal 



2-4 



II th 

 g a 

 od co 



eefs at 

 but noti 

 raphs , c 



sites f 

 asuremen 

 1 o n i e s . 

 asured a 

 p 1 ength 

 tip di am 

 r (measu 

 er (maxi 

 tercal i c 

 the rim 

 s the ra 

 ength wa 

 es of 44 

 r growth 

 and Al iz 

 e i g h i n g 



communi 

 colonies 

 e moti le 

 .5 mm me 

 mmuni ty 



27, 42 

 ceably 

 u rrent 

 or one 

 ts of c 



For ea 

 nd an a 



( di sta 

 eter ( d 

 red at 

 mum wid 

 al di st 

 of the 

 ti o of 

 s the r 



c o 1 o n i 



rates 

 ari n dy 

 the cor 

 ty was 



were c 

 , epili 

 sh Nyte 

 i s desc 



and 



dama 



mete 



year 



oral 



ch c 



vera 



nee 



iame 



1-2 



th f 



ance 



near 



mean 



ati o 



es w 



of b 



e . 



al 1 



samp 



olle 



thic 



x ba 



ri be 



80 m. C 

 ged colo 

 rs , and 



ol oni es were 

 nies were re 

 1 i ght meters 



mor 

 ol on 

 ge f 

 from 

 ter 

 cm i 

 rom 



(me 

 est 



bra 



of 

 ere 

 ranc 

 Call 

 n s i 

 led 

 cted 

 , an 

 g ov 

 d by 



phol 



y (c 



ore 

 the 

 of a 

 ncre 

 rim 

 asur 

 neig 

 nch 

 mean 

 comp 

 h ti 

 f i ca 

 tu . 

 by a 

 eve 

 d en 

 ere 

 Ree 



ogy w 

 oral 1 

 ach o 

 apex 

 bran 

 ments 

 to ri 

 ed be 

 hbori 

 di a me 



ti p 

 ared 

 ps we 

 ti on 



ere det 

 urn) , ma 

 f the f 



of a b 

 c h tip 



throug 

 m of a 

 tween t 

 ng cora 

 ter to 

 1 ength 

 and des 

 re meas 

 rates w 



col 1 ecti on 

 ry 2-3 month 

 dolithic fau 

 ach colony d 

 d, et al . (1 



randomly selected 

 jected. Sediment 

 were deployed at 



ermined from a 

 ximum width and 

 ollowing was 

 ranch to the first 

 at i ts mi dpoi nt ) , 

 hout a col ony ) , 

 polyp ' s cup , i.e., 

 he cup rim of a 

 1 1 i te) . Rel ati ve 

 coral 1 urn width, and 

 to tip diameter, 

 cribed by Reed 

 ured by use of 

 ere determined by 



of a total of 42 

 s at the study 

 na were captured 

 uring collection. 

 982) . 



RESULTS 



Habitat and hydrology 



T 



consi 

 paral 

 of al 

 rock 

 occur 

 (80 m 

 5-25m 

 The c 

 and d 



T 

 sedim 

 edge 

 (0-31 

 ( i ncl 

 i nund 



T 

 nears 

 upwel 

 appar 

 Betwe 

 major 

 edge 

 cause 

 Gibso 

 area 



he inne 

 st of c 

 lei the 

 gae, sp 

 pavemen 

 s in d e 

 ) , disc 



rel i ef 

 oral gr 

 ead rub 

 he near 

 e n t a t i o 

 reef (R 

 %) , dep 

 udi ng z 

 ated wi 

 emperat 

 hore (x 

 ling wh 

 e n 1 1 y i 

 en 1977 



i ntrus 

 reef in 

 s tempe 

 n , pers 

 shows t 



r-sh 

 oqui 



coa 

 onge 

 t i n 

 nse 

 onti 



and 

 ows 

 ble 

 shor 

 n ra 

 eed , 

 endi 

 ooxa 

 th a 

 ures 



= 1 

 i ch 

 ntru 



and 

 i on 

 di ca 

 ratu 

 . co 

 hat 



eTfT 

 noi d 

 st. 



and 

 hibit 

 popul 

 nuous 



are 

 to 1. 

 areas 

 e ree 

 tes t 



1982 

 ng on 

 nthel 



turb 



are 

 6.2 a 

 produ 

 des o 



1979 

 a yea 

 ted e 

 res t 

 mm. ) 

 1 eve! 



6m) and mid-shelf (27m) reef 

 limestone pavement and ledge 

 Colonies of Ocul i na are i n t e 

 octocoral . At the 42 m site 

 s algal and sponge attachmen 

 ations on isolated patch ree 

 pinnacles form a ridge (Ave 

 covered with colonies of apo 

 5 m in height and forms exte 



f is 

 o be 



)• 



sur 

 lae) 

 id, 

 sign 

 nd 2 

 ces 

 nto 

 , th 

 r, 1 

 pi so 

 o dr 

 on u 

 s of 



i nf 1 ue 



10 tim 

 Transmi 

 ge. Li 



growth 

 bottom 

 i f i c a n t 

 4.6°C, 

 a 3-7°C 

 the nea 

 ermogra 

 asti ng 

 die i n t 

 op belo 

 pwel 1 i n 



nutri e 



need by 

 es great 

 ttance o 

 ght leve 



at the 

 n e p h e 1 o i 

 ly col de 

 respecti 



drop in 

 rshore r 

 phs at t 

 2-3 week 

 rusi ons 

 w 10°C. 

 g on the 

 nts and 



strong wa 

 er than t 

 f 1 i ght i 

 Is are to 

 80 m site 

 d 1 ayer . 

 r at the 

 vely; Ree 

 temperat 

 eefs only 

 he nearsh 

 s. Tempe 

 throughou 

 Unpubl i s 

 outer sh 

 chl orophy 



s are disjunct and 

 s (1-5 m rel ief ) whi ch 

 rspersed among a cover 

 , a sand veneer over a 

 t ; however, Ocul i na 

 fs. At the shelf edge 

 nt , e_t aj_. , 1977) with 

 symbiotic Ocul i n a . 

 nsive living thickets 



ve surge which causes 

 hose at the shelf- 

 s variable nearshore 

 o low to support algal 

 which often is 



shelf-edge reef than 

 d, 1981). Cold-water 

 ure (Smith, 1981) 



during the summer, 

 ore reef recorded one 

 ratures at the shelf- 

 t the year which 

 hed research (R. 

 elf near this study 

 11 increased nearly an 



120 



