CONTENTS 



OCEAN MARGINS PROGRAM DESCRIPTION 1 



RESEARCH ABSTRACTS 



THE SIZE DISTRIBUTION AND CONCENTRATION OF SEDIMENTS NEAR THE 

 SEABED: A SPECIFICATION OF THE BOTTOM BOUNDARY 

 CONDITION 4 



MULTIPLE TRACER MEASUREMENT OF THE COUPLING BETWEEN BENTHIC 

 CARBON FLUXES AND BIOTURBATION ACTIVITY DURING THE 

 "SPRING BLOOM" 6 



TRANSFORMATION RATES AND FATE OF DISSOLVED, COLLOIDAL, AND 

 PARTICULATE FORMS OF ORGANIC CARBON IN OCEAN 

 MARGINS 9 



MECHANISMS OF DISSOLVED ORGANIC CARBON CYCLING IN AN OCEAN 



MARGIN 11 



CARBON CYCLING ON THE CONTINENTAL MARGIN: EVIDENCE FROM 



SEDIMENT 14-C AND NUTRIENT ELEMENTS 13 



THE DYNAMICS OF CARBON EXCHANGE IN VERTICALLY STRATIFIED 



COASTAL BACTERIOPLANKTON COMMUNITIES 17 



TRANSFORMATION RATES AND FATE OF DISSOLVED, COLLOIDAL AND 

 PARTICULATE FORMS OF ORGANIC CARBON IN OCEAN 

 MARGINS 19 



DETERMINATION OF PARTICULATE ORGANIC CARBON FLUXES USING 



THORIUM-234 21 



ASSESSING INORGANIC NITROGEN AND PHOSPHORUS UTILIZATION BY 



BACTERIA USING AN IMMUNOFLUORESCENT METHOD 23 



EXTENSION OF 210 PB GEOCHRONOLOGY WITH INVERSE NUMERICAL 



TECHNIQUES 26 



