Table 2. Ten most abundant taxa at Seawolf Disposal Mound - Center and 75E, September 1997 



I Seawolf Disposal Mound - Center 





Rank 



Species 



Percent of 

 Total Fauna 



Density 

 (Ind. 0.04 m 



- 2 ) 





1 



Nucula annulata (Stage II bivalve) 



36.00 





18 





2 



Ampelisca vadorum (Stage II amphipod) 



12.00 





6 





3 



Ampharete finmarchica (Stage I polychaete) 



6.00 





3 





4 



Crepidula plana (gastropod) 



6.00 





3 





5 



Leptocheirus pinguis (Stage II amphipod) 



6.00 





3 





6 



Prionospio steenstmpi (Stage I polychaete) 



4.00 





2 





7 



Spiochaetopterus costarum (Stage II/III polychaete) 



4.00 





2 





8 



Mediomastus ambiseta (Stage I polychaete) 



4.00 





2 





9 



Petricola pholadiformis (bivalve) 



4.00 





2 





10 



Barnea sp. (bivalve) 



4.00 





2 







Total - 1 Taxa 



86.00 





43 







Remaining Fauna - 7 Taxa 



14.00 





7 







Total Fauna - 1 7 Taxa 



100.00 





50 







Seawolf Disposal Mound - 75E 











Rank 



Species 



Percent of 

 Total Fauna 



Density 

 (Ind. 0.04 m 



• 2 ) 





1 



Nucula annulata (Stage II bivalve) 



29.50 





59 





2 



Prionospio steenstmpi (Stage I polychaete) 



24.50 





49 





3 



Mediomastus ambiseta (Stage I polychaete) 



12.00 





24 





4 



Crepidula plana (gastropod) 



8.00 





16 





5 



Ampelisca vadorum (Stage II amphipod) 



4.00 





8 





6 



Tharyx acutus (Stage I polychaete) 



3.00 





6 





7 



Monticellina baptisteae (Stage I polychaete) 



2.50 





5 





8 



Spiochaetopterus costarum (Stage II/III polychaete) 



2.00 





4 





9 



Ampharetidae spp.* (Stage I polychaete) 



2.00 





4 





10 



Anadara transversa (bivalve) 



1.50 





3 





10 



Ampelisca abdita (Stage II amphipod) 



1.50 





3 







Remaining Fauna - 15 Taxa 



9.50 





19 







Total Fauna - 26 Taxa 



100.00 





200 





* Taxon excluded from diversity analysis. Incompletely identified taxa were used in diversity analyses only when species belonging to those taxa 

 were absent from the sample. 



