SMITH: SPAWNING BIOMASS OF NORTHERN ANCHOVY 



Table 3. — Description of CalCOFI regions used in this analysis. 



Totals 



183 



49 



237,544 



81.48 



Table 4. — Equivalent station list off southern California for 1940, 1941, and 1950-72. 



Southern California inshore 



Southern California offshore 



perpendicular bisectors of lines 

 between station "i" and all adja- 

 cent stations expressed as num- 

 ber of 10 m^ areas 



Ckf = estimate of abundance of larvae in 

 year "k" and "/" takes the value 

 of the number of the equation 



Ci = number of larvae in "ith" sample 



tti = area of mouth of the net used at the 

 "ith" station 



bi = length of tow in meters estimated 

 from a calibrated flow meter at 

 station "i" 



di = tow depth in meters estimated 



wire out at station "i" 

 m = number of stations 

 n = number of monthly cruises. 



In the "standard haul summation" approach the 

 sums of all tows on regularly occupied stations 

 for each monthly cruise were totaled for the year 

 without weighting for represented area. 



Cfc = 10 



7t 



3 = 1 



S("' 



2 hr^ a di 



)I 



(2) 



To accommodate the quarterly cruises Ahlstrom 

 (1966, 1968) established a modification of this 

 in which the quarterly averages of 1 to 3 monthly 

 cruise summations were added to make an 



855 



