BACTERIA AT OCEANOGRAPHIC STATIONS OFF SOUTHERN CALIFORNIA - POPULATION DISTRIBUTION IN RELATION TO DEPTH
Abstract
The vertical distribution of bacteria and its relationship to the environmental parameters from the surface of the sea to a depth of 12,000 feet was studied off the coast of Southern California near the Santa Barbara Channel Islands. The bacterial population varied randomly with location and depth. The highest bacterial count (12,000 per 100 ml of seawater) was found at depths between 2,300 and 2,700 feet in the minimum oxygen zone. The lowest number of bacteria (about 5 per 100 ml of seawater) was found near the sea floor at a depth of 12,000 feet. The variation of bacterial population density with depth does not seem to be influenced by any single environmental factor. This report also presents data on the bacteriological analysis of sediment samples, a comparison of the number of bacteria present in seawater samples collected with sterile bacteriological samplers and nonsterile water samplers, and incidence of failures of rubber components of bacteriological samplers.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1968
- Accession Number
- AD0664954
Entities
People
- J. S. Muraoka
Organizations
- Naval Facilities Engineering Service Center