Haaker, Peter L.

English

Aquatic Commons

Vessel: 
Dates : 
Loca l i t y  : 
Purpose : 
Procedure: 
Resul ts :  
S t a t e  o f  C a l i f o r n i a  - The Resources Agency 
Department o f  F i sh  and Game 
Marine Resources Region 
Long Beach, C a l i f o r n i a  
CRUISE REPORT 72-KB-24 
SPORTFISH-KELP HABITAT PROJECT DJ-F 27 R 
Prepared  by P e t e r  L. Haaker 
R/V KELP BASS 
September 19-20 and 25-27, 1972 
Santa Ca ta l inae I s l and  and Abalone Cove, P a l o s  Verdes 
Pen insu la  
1, To perform maintenance on e x i s t i n g  k e l p  t r a n s p l a n t s .  
2. To prepare  s u b s t r a t e  f o r  a t tachment  of  new t r a n s p l a n t s .  
3.  To t r a n s p l a n t  more Macroezjstis p l a n t s  from Santa  
Ca ta l ina  I s l a n d  t o  Abalone Cove. 
4 .  To i n i t i a t e  c o n t r o l  measures a g a i n s t  k e l p  g r a z e r s .  
In spec t ion  of t h e  Abalone Cove t r a n s  p i an r  s i t e  was under- 
taken by d i v e r s  and new s u b s t r a t e  w a s  p repared  f o r  attachment 
of k e l p  t r a n s p l a n t s .  
Kelp was c o l l e c t e d  i n  Isthmus Harbor, Santa  C a t a l i n a  I s l a n d ,  
and t r anspor t ed  t o  Abalone Cove f o r  t r a n s p l a n t a t i o n ,  
Measures t o  c o n t r o l  ke lp  g r a z e r s ,  which inc luded  g i l l  n e t t i n g  
and s p e a r f i s h i n g ,  were i n i t i a t e d .  
In spec t ion  of t h e  t r a n s p l a n t  s i te  i n  Abalone Cove r evea l ed  
ex tens ive  damage caused by two t r o p i c a l  s torms which passed 
through southern  C a l i f o r n i a  i n  l a t e  August. I t  i s  e s t ima ted  
t h a t  about  60 pe rcen t  of t h e  p l a n t s  were damaged o r  l o s t .  
New s u b s t r a t e  was prepared f o r  s ecu r ing  t r a n s p l a n t s  t o  t h e  
bottom. Nylon l i n e s  were t i e d  around l a r g e  rocky outcrop-  
pings,  t o  which were a t t ached  pa i r ed  l i n e s .  A v a r i a t i o n  of 
t h i s  method us ing  s h o r t  l e n g t h s  of cha in  cemented t o  t h e  
bottom was a l s o  used. This  technique,  though t h e  most t i m e  
consuming t o  s e t  up, seems t o  make t h e  most e f f i c i e n t  u s e  of 
bottom h a b i t a t  and has  t h e  g r e a t e s t  p o t e n t i a l  f o r  h a p t e r a l  
.+ ( h o l d f a s t )  attachment.  
A t o t a l  o f  145 Mncrociystis p l a n t s  was c o l l e c t e d  i n  ~ s t h m u s  
Harbor, Santa  Ca ra l ina  I s l a n d ,  and t r a n s p l a n t e d  i n  Abalone 
Cove, during t h r e e  t r i p s .  
Grazing o f ,  t h e  k e l p  i s  s t i l l  t h e  major problem l i m i t i n g  
the  growth and p r o l i f e r a t i o n  of ke lp  i n  t h e  s tudy  s i t e .  
Schools of about  20-30 opaleye,  GireZZa nigricans, and 
halfmoon, MediaZuna caZiforniensis, were s p o t t e d  i n  and 
around ou r  beds. Eighteen opa leye  and 4 halfmoon were 
speared  i n  an  a t tempt  t o  reduce graz ing .  These f i s h e s  
w e r e  saved f o r  examination. The use  of an  exper imenta l  
g i l l  n e t  w a s  begun. W e  a r e  p r e s e n t l y  t r y i n g . t o  determine 
t h e  most e f f i c i e n t  depth and l o c a t i o n  a t  which t o  set  t h e  
n e t .  
Personnel:  Marco Mazarovich, Vessel  Captain 
Ken Wilson, Blo logis  t-in-charge 
P e t e  Waaker , B i o l o g i s t  
Bob B e l l ,  B i o l o g i s t  25-27 September 
Rod Aoto, Seasonal  Aid 19-20 September 


Cruise Report 72-KB-24: Sportfish-Kelp Habitat Project DJ-F 27 R

http://aquaticcommons.org/601/1/Cruise_report_72-KB-24.pdf

Cruise Report 72-KB-24: Sportfish-Kelp Habitat Project DJ-F 27 R

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