71° 30 



BLOCK ISLAND SOUND 



PROVIDENCE 



MASS. 



STUDY ; 

 I AREA__J 



BLOCK J] 

 ISLAND O 

 SOUND 



ATLANTIC OCEAN 



N 



I 



_1_ 



NAUTICAL MILES 



41° 

 20' 



15 



--10 



--05 



Figure 1. — Station locations in Block Island Sound. 



ANOVA with depth, time of day, station, and sample date as 

 main effects. A three-way classification ANOVA was per- 

 formed on 1977 and 1978 surface data from four stations 

 with station, sample date, and time of day as main effects. 

 One-way ANOVA was performed on 1979 data with station 

 location as the main effect. 



RESULTS 



Seasonal Abundance 



In 1977, lobster larvae were first observed on 31 May, 

 reached peak abundance in mid-June, and were no longer 

 collected after 1 August (Fig. 2). In 1978, larvae were initially 

 collected during the first week of June, and had disappeared 

 by the end of August. In 1979, larvae were first observed on 23 

 May. Bottom temperatures at station EB-B when stage I larvae 

 were first observed were 13.3°C, 13.6°C, and 12.6°C during 

 1977-79, respectively. 



Figure 2. — Mean surface da> abundance at stations EB-B and EB-C and mean 

 surface bottom temperature at station EB-B in Block Island Sound. Samples 

 collected in 1977 and 1978 bv Tucker net. in 1979 b> neuston net. 



10 20 30 10 20 30 10 20 30 10 20 30 



HAY JUNE JULY AUGUST 



16 



