4-9 



and May 1975 through October 1977) mesh netting and a mouth-mounted 



General Oceanics digital flowmeter that estimated the volume of water 



* 

 filtered by the net . Collections were made near both flood and ebb 



slack tides by 10-minute oblique net tows against the prevailing tide. 



Stations 3, 6, 8, 18 and 20 were sampled during all dates, and Station 



11 was sampled from May 1975 through October 1977 (Figure 4-1) . Samples 



were preserved in 5% formalin. 



From June 1972 through June 1974, a 12.5-cm diameter Clarke- 

 Bumpus sampler outfitted with 76)jm mesh netting was used. Near-surface 

 and near-bottom samples were collected by towing the net for two-minute 

 intervals on both flood and ebb tides. Clarke-Bumpus collections were 

 preserved in buffered 5% glutaraldehyde. 



Data collected prior to July 1974 are not presented due to the 

 methodological differences, which render the data noncomparable to 

 latter years. Quality of the identifications is questionable, and 

 quantitative accuracy is such that data should only be treated qual- 

 itatively. These data may be found in previous reports (NAI, 1973; 

 1974) . 



All fish eggs and larvae in a sample were counted and iden- 

 tified, except where organism densities were relatively large. In these 

 cases, subsamples were taken so that the minimum number of eggs and 

 larvae counted per aliquot were as follows: 



ALIQUOT MINIMUM NUMBER TO BE IDENTIFIED 



SIZE EGGS LARVAE 



1/2 100 100 



1/4 100 200 



1/8 200 300 



1/16 300 



1/32 400 



3 



Density of fish eggs and larvae were expressed as number per m . 



* 



Collections from both 333vim and 505ym nets were assumed to be 



comparable . 



