FISHERY BULLETIN: VOL. 81, NO. 4 



low ^ 4 S benthic bacterial foods, rather than cumula- 

 tive food web fractionations. The various means by 

 which benthic algae and bacteria take up low 5 34 S sul- 

 fur from sediments is the subject of current 

 investigations. 



ACKNOWLEDGMENTS 



I thank Richard Anderson, Scott Holt, Steve Risot- 

 to, and crews of the RV Longhorn and the Louisiana 

 Wildlife and Fisheries Commission for their able 

 help in collecting and sorting animals. Richard S. 

 Scalan provided analytical support for the mass 

 spectrometric determinations. Steven A. Macko per- 

 formed most of the # 5 N determinations. Fred and 

 Cathy Short criticized earlier versions of this manu- 

 script while Harbor Branch Foundation provided sec- 

 retarial support in the preparation of this paper. This 

 research was funded byNSF grant OCE 77-27009 to 

 Patrick L. Parker. 



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