41^ 



ficial reefs was highlighted by the installation of 35,000 tires on twa reef sites 

 in the New Jersey-New York area. We tested different techniques of incorporating 

 scrap tires as reef^building material in configurations that provided necessary 

 relief, ease of handling, and low cost. These are necessary criteria if the ma- 

 terial is to he practical for use by sport fishing groups and conservation agencies. 

 After selecting a combination of rod units and single tire units, we deposited 

 30,000 tires between June and October on the Atlantic Beach artificial reef off 

 southern Long Island. We then deposited 5,000 tires in November on our new 

 experimental reef site off Sea Girt, N.J. 



Our inspection dives on the Jacksonville and Palm Beach, Fla., reefs revealed 

 numerous game fishes of many species and a thick growth of encrusting orga- 

 nisms on the materials at both reefs. The car bodies on the two-year-old Jackson- 

 ville reef showed appreciable deterioration. The car frames remained intact and 

 supported a considerable growth of invertebrates but the thin metal of the roof 

 and sides of many cars had disappeared. 



To compare the biomass of encrusting organisms on artificial reefs with popula- 

 tions on natural bottom around the reef, we resumed and refined the tabulation 

 of (lata collected on a benthic survey off southeastern Long Island from February 

 1966 to January 1967. Two polyehaetes were tentatively identified as new to 

 this area. We found three types of invertebrate distribution present in this area, 

 two specific and one ubiquitous. 



Richard Stone and Chester Buchanan. 



Creel survey technique 



We developed and tested several creel survey methods for estimating fishing 

 pressure, catch per angler hour, and anglers' total harvest around artifical reefs. 

 We defined the angling population in our study area as all sport fishermen fishing 

 beyond the surf zone between Manasquan Inlet, N.J., and Jones Inlet, N.Y. To 

 sample this population, we divided the anglers into two groups: 1) party and 

 charter boat anglers and 2) private boat anglers. 



In our first attempts to gather information from party boat anglers, we dis- 

 tributed a limited number of log books to the captains and attempted to inter- 

 view the anglers when they returned to the docks. The dockside interviews proved 

 impractical. However, we are getting encouraging results from the log book 

 returns. 



We designed a mail survey which proved to be the best sampling method for 

 private boat anglers. We identified the owner of a particular boat by recording 

 his registration number as he passed an observation point and then checking 

 with the State Marine Police to see who owned the boat. Then we mailed question- 

 naires to 196 boat owners. We received completed questionnaires from over SO 

 percent of the boat owners sampled. Errors introduced from non-response were 

 minimal — a, follow-up survey differed by only 0.07 fish per hour in the estimate of 

 fish per angler hour and 4 percent in the number of unsuccessful anglers. We 

 are using aerial surveys to estimate total angling pressure in the test area. 



Chester Buchanan and Richard Stone. 



Mr. GooDLiNG. Are you going to continue to attempt to rid the coun- 

 tryside of these unsightly automobiles ? To my way of thinking, they 

 are a pollutant just as much as many other things. 



Mr. RucKELSHAus. Yes, we are, Mr. Goodling, Under the Resource 

 Recovery Act of 1970, we are specifically authorized and told to look 

 into this problem and come up with some solutions for it. 



Mr. GooDLiisrG. You are working on that problem ? 



Mr. RucKELSHAus. Yes, we are. 



Mr. Goodling. That is all, Mr. Chairman. 



Mr. DiNGELii. Thank you, Mr. Goodling. 



Mr. Downing? 



Mr. Downing. Thank you, Mr. Chairman. 



Mr. Ruckelshaus, this bill excludes rivers and harbors, does it not? 



Mr. Ruckelshaus. It does not exclude harbors from its provisions. 



Mr. Downing. It excludes rivers ? 



