MATERIALS AND METHODS 



Field Operations 



Sampling was done primarily at seven stations (Fig. 1). At these 

 stations water quality, hydrography, zooplankton and epibenthic sled 

 samples were taken at least monthly. Samples from other stations and 

 with other gear (otter trawl, clam rake, Smith-Mclntyre bottom grab, 

 gill net and beach seine) were taken less regularly. A listing of the 

 stations and collection dates for the various gears are given in 

 Tables 1-8. 



Water quality and hydrographic data were collected at surface and 

 bottom levels from stations less than 35 feet deep, and at surface mid- 

 depth and bottom at the deeper stations (Fig. 2). Water quality samples 

 were taken with a Van Dorn bottle. Analyses included measurements of 

 dissolved oxygen, chlorophyll-a, inorganic phosphate, total phosphate, 

 nitrite and nitrate. Hydrographic data (temperature, salinity and 

 conductivity) were taken with a Beckman Model RS-5 salinometer. Phyto- 

 plankton samples were taken with the Van Dorn bottle and fixed with a 

 potassium iodide-iodine solution for laboratory examination, 



Zooplankton collections (Fig. 3) were made with #8 (0.203 mm mesh 

 aperture) and ilO (0.569 mm) Nitex half -meter nets. A flow meter was 

 mounted in the throat of each net to estimate volume flow. Oblique tows 

 were made by lowering the net slowly from surface to bottom and retrieving 



