Haaker, Peter L.

English

Aquatic Commons

State  of California - The Resources Agency 
Department of Fish and Game 
Marine Resources Region 
Long Beach, Cal i fornia 
CRUISE REPORT 72-KB-8 
. SPORTFISH-KELP HABITAT PROJECT DJ F-27-R 
and 
INSHORE FISHERIES HABITAT EVALUATION AND MONITORING 
Prepared by P e t e r  L. Haaker 
Vessel : KELP BASS 
Dates : A p r i l  18-21 and A p r i l  24-28, 1972 
Local i ty :  P t .  Loma ke lp  bed, San Diego County. 
Purpose: 1. To mark and pre-survey a r e a s  t o  be  quicklimed 
by Kelco Co. on A p r i l  25-27, 1972. 
2. Observe l iming ope ra t ions .  
3.  Survey limed a r e a :  t o  determine e f f e c t s  of 
l iming on ben th i c  communities. 
Resu l t s  : Biologis t -d ivers  s e t  up a t o t a l  of seven band t r a n s e c t s  
30m long i n  two of t h e  four  a r e a s  t o  be  quicklimed 
by Kelco Co. Photographic reconnaissance and band 
t r a n s e c t s  were hampered by gene ra l ly  poor v i s i b i l i t y  
and cons ide rab le  bottom surge.  
A t h i r d  a r e a  w a s  pre-surveyed by D r .  Paul  Dayton and 
M r .  Rick Rosenthal of  Scr ipps  I n s t i t u t e .  Cages 
con ta in ing  va r ious  echinoderms and young (1-5mm) r ed  
abalone were placed i n  t h i s  a r e a .  
The f o u r t h  a r e a  was n o t  surveyed due t o  poor v i s i b i l i t y  
and heavy surge.  
Liming was stopped i n  one area a f t e r  h a l f  a load  had 
been dumped, t o  a l low d i v e r s  t o  observe  t h e  immediate 
e f f e c t s  of t h e  l ime on b e n t h i c  organisms. 
Liming had a d e f i n i t e  e f f e c t  on echinoderms. Urchins,  
s t a r f i s h ,  s ea  cucumbers, and a n  occas iona l  b r i t t l e  
star were i n  d i s t r e s s  and be ing  r o l l e d  a long  t h e  bottom 
by t h e  surge.  Many o t h e r  i n v e r t e b r a t e s  appa ren t ly  
reached t o  t h e  l ime,  b u t  any de t r imen ta l  e f f e c t s  were 
no t  immediately d i sce rnab le .  F ishes  were seen  i n  t h e  
l iming  a r e a  wi th  hydrolyzed l i m e  (CAOH) on t h e i r  backs,  
b u t  were app ren t ly  no t  a f f e c t e d .  
Divers  inspec ted  t h e  a r e a  aga in  a f t e r  l iming ,  n o t i n g  
s i m i l a r  e f f e c t s .  
Some areas were revisited a day later. Urchins had 
reattached to the substrate, but most had apparent 
lime damage. Starfishes had reattached, but many 
dead sea cucumbers were found. Most other inverte- 
brates seemed to be unaffected by the lime. 
We plan to revisit the limed areas again and assess 
the long term effects of liming operations. 
Personnel: Marco Mazarovich, Vessel Captain 
Peter Haaker, Biologist 
Dan Odenweller, Biologist 
Dick Moe, Biologist 
Bob Hardy, Biologist (April 19, 20, 24 and 25) 
Me1 Odemar., Biologist (April 26, and 27) 


Cruise Report 72-KB-8: Sportfish-Kelp habitat project DJ F-27-R and Inshore fisheries habitat evaluation and monitoring

http://aquaticcommons.org/585/1/Cruise_report_72-KB-8.pdf

Cruise Report 72-KB-8: Sportfish-Kelp habitat project DJ F-27-R and Inshore fisheries habitat evaluation and monitoring

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