diversity and biomass although live and dead scallops offer a 

 structurally similar substrate. 



The paper by Langton and Robinson utilized quantitative 

 photographic transects to characterize the macrobenthic inverte- 

 brate fauna on three scallop beds in the western Gulf of Maine. 

 The scallop itself, occurred in patches rather than being random- 

 ly distributed over the sea floor. The distribution of scallops, 

 even at their lowest density, was best described by a negative 

 binomial equation. The relation between scallops and the other 

 two dominant invertebrates was also investigated. On Fippennies 

 Ledge the sabellid worm was found to significantly co-occur, or 

 have a positive association, with the scallop while the burrowing 

 anemone was negatively associated with scallop occurrence. At 

 the other two study sites the species associations were not as 

 clear, however, scallop density was much lower. It was suggested 

 that the faunal associations broke down because of scallop dredg- 

 ing activity. The sabellid worm and burrowing anemone are both 

 capable of retracting into the sediment while the scallops would 

 be removed by the dredge. 



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