636 



Fishery Bulletin 98(3) 



ROCK MUD (Guild V) 



S=37 



K=2781 



J=0 77 



n =206 habitat patches 



95% S in 1 88 patches 



1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 



25 

 20 -■ 

 015 -I  



..III 



05 ^^^^HH ^^ 



00 -^^^^^^^^^*^^^^^ 



MUD ROCK (Guild III) 



S=32 



H'=2 559 



J'=0 74 



n =128 habitat patches 



95% S in 82 patches 



1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 



IlLi 



MUD COBBLE (Guild I 



S=24 



H'=2528 



J=080 



n =100 habitat patches 



95% S in 55 patches 



1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 



ROCK (Guild V) 



S=32 



H'=2.436 



J'=070 



n =132 habitat patches 



95% S in 78 patches 



1 3 6 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 



015 



lIL 



MUD PEBBLE (Guild II) 



S=23 



K=2427 



J'=0 77 



n =38 habitat patches 



95% S in 25 patches 



05 



I MUD BOULDI 



 S=22 



K| H'=2407 



'^^L J'=0 78 



--^H  n=ei habitat pal 



^^H I 95% S in pal 



Mil I Iw - 



1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 



20 



00 



l-l^. Ifc 



MUD (Guild 1) 



S=40 



H'=2 308 



J'=0 63 



n =176 habitat patches 



95% S in 88 patches 



050 

 040 



10 

 00 



1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 



BOULDER MUD (Guild IV) 



S=19 



H=2 149 



J'=0 73 



n =54 habitat patches 



95% S in 35 patches 



1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 



0,50 - 



20 



00 



I 



ROCK BOULDER (Guild VI) 



S=18 



H'=l 953 



J'=0 68 



n =19 habitat patches 



95% S in 1 7 patches 



1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 



Species 



Figure 8 



Overall relative abundance of each species associated with each type of habitat. Species richness (S), diversity (H'l, and evenness 

 (J') were calculated for each habitat guild (see Fig. 4 for identifications), n = the number of habitat patches sampled in each habitat. 

 The number of patch samples required to detect SS*? of the species is indicated. 



Refugia 



The high abundances of adult rockfishes associated with 

 rock habitats along the sides of Soquel Submarine Canyon 

 indicate that this canyon may in part serve as a natural 



harvest refuge, especially for those species of economic 

 value. A comparison of average number offish per hectare 

 of habitat for the most abundant taxa in Soquel Canyon 

 with the results of the habitat-based study on Heceta 

 Bank (Stein et al., 1992), a longtime area of fishing activ- 



