ZoBell — xiv — Marine Microbiology 



SONAL DISTRIBUTION OF MARINE BACTERIA — EFFECT OF OTHER 

 ORGANISMS — The ANTAGONISTIC EFFECTS OF MICROORGAN- 

 ISMS — Bacteriophage in sea water — Effect of solid 

 SURFACES — Effect of sedimentation — Effect of or- 

 ganic matter 59 



Chapter 6 

 MICROORGANISMS IN BOTTOM DEPOSITS: — Numbers 



OF BACTERIA IN SEDIMENTS — VERTICAL DISTRIBUTION OF BAC- 

 TERIA IN MUD — Lower limits of the biosphere — Factors 



INFLUENCING ABUNDANCE OF BACf ERIA IN MUD — BlOCOENO- 

 SIS AND BACTERIA IN BOTTOM DEPOSITS — KiNDS OF MICRO- 

 ORGANISMS OCCURRING IN BOTTOM DEPOSITS 90 



Chapter 7 



ACTIVITIES OF MICROORGANISMS IN BOTTOM DE- 

 POSITS: — Calcium carbonate precipitation — Deposi- 

 tion OF IRON and manganese — EFFECT ON HYDROGEN-ION 

 CONCENTRATION — EFFECT ON OXIDATION-REDUCTION PO- 

 TENTIAL — Factors influencing oxygen consumption — 

 Gases in bottom deposits — Effect on organic content 

 OF bottom deposits — The petroleum problem — Sulfur 

 deposition — Particle-binding action of microorganisms 

 — Enzymes in bottom deposits 100 



Chapter 8 



CHARACTERISTICS OF MARINE BACTERIA : — Cell mor- 

 phology — Cultural characteristics — Physiological 

 characteristics — Salinity requirements — Tempera- 

 ture tolerance — Attachment propensities — Bacterial 

 genera represented in the sea 1 14 



Chapter q 



AQUATIC YEASTS AND MOLDS : — Occurrence of yeasts 

 IN THE SEA — Marine molds — Significance of yeasts and 

 molds in the sea — Importance of fungi in lakes .... 129 



Chapter 10 

 TRANSFORMATION OF ORGANIC MATTER : — Quantity 



OF ORGANIC MATTER DECOMPOSED — DECOMPOSITION OF CARBO- 

 HYDRATES — LiGNIN DECOMPOSITION — PrOTEINACEOUS COM- 

 POUNDS — Chitin decomposition — Lipolytic bacteria — 

 Bacterial oxidation of hydrocarbons — Marine humus 136 



Chapter 11 



THE NITROGEN CYCLE IN THE SEA: — Ammonia pro- 

 duction — Bacterial oxidation of ammonia — Oxidation 

 OF nitrite to nitrate — Reduction of nitrate and ni- 

 trite — Nitrogen fixation 150 



