CONTENTS 



Page 



I EFFECTS ON SUSPENDED SOLIDS ON CARBON ASSIMILATION OF 



SELECTED SPECIES OF ESTUARINE PHYTOPLANKTON 7 



1. Introduction 7 



2. Materials and Methods 7 



3. Results and Interpretation 10 



II EFFECTS OF SUSPENDED SEDIMENTS ON FEEDING ACTIVITY OF 



THE COPEPODS EURYTEMORA AFFINIS AND ACARTIA TONSA 17 



1. Introduction 17 



2. Materials and Methods 17 



3. Results and Interpretation 23 



III SUMMARY 35 



LITERATURE CITED 37 



APPENDIX . . . 41 



TABLES 



1 Effect of increasing concentrations of different sediment 



types on uptake of radioactively labeled Mono ohry sis 



luthevi by Eurytemora af finis 28 



2 Effect of increasing concentrations of different sediment 



types on uptake of radioactively labeled Monochrysis 



lutheri by Aaartia tonsa 30 



3 Comparison of feeding for Acavtia tonsa feeding on 



labeled Monochrysis luthevi cells in clean water and 



Patuxent River silt 33 



4 Comparison of feeding rates for Eurytemora affinis feeding 



on labeled Monochrysis lutheri cells in clean water and 



Patuxent River silt ' 34 



FIGURES 



1 Saturation curve to photosynthesis for Monochrysis lutheri 



exposed to cool white illumination 12 



2 Saturation curve of photosynthesis for Chlorella sp. 



exposed to cool white fluorescent illumination 12 



3 Saturation curve of photosynthesis for Nannoohloris sp. 



exposed to cool white fluorescent illumination 13 



