SCUBA diver surveys were made in the shallow, rocky areas around 

 Davids Island. This permitted examination of areas not amenible to 

 traditional sampling gear. Surveys were made from the beach to 20 feet 

 of water in the areas shown in Fig. 8. 



Laboratory procedures 



Dissolved oxygen measurements were made by the modified Winkler method 

 (American Public Health Association, 1965). Nutrient and chlorophyll-a 

 estimates were made using the methods of Strickland and Parsons (1968). 



Phytoplankton samples (100 ml each) were concentrated 10- to 100-fold. 

 Aliquots of concentrate were placed in four Palmer Nannoplankton Chambers 

 and 10 microscopic fields per chamber were examined at 400 x. Nannochloris 

 atomus (tentative identification) counts were made from unconcentrated 

 aliquots using a haemocytometer. 



Zooplankton samples collected with #8 mesh net were diluted to a known 

 volume, and subsamples examined until at least 300 copepods were counted. 

 Copepods were identified to species; other organisms were classified to 

 specific level or higher taxonomic groups. As with all organisms collected, 

 identification was carried as far as possible but was often limited by lack 

 of time, experience or available literature. Zooplankton collected with 

 ^K) mesh net and epibenthic sled were sorted for larger crustaceans 

 (i.e., mysids, decapod larvae), fish eggs and fish larvae. Entire samples 

 were examined except those of very large volume (1 quart or more), of which 

 only an aliquot was sorted. 



