[Location: Location_Category='OCEAN', Location_Type='INDIAN OCEAN', Location_Subregion1='ARABIAN SEA']
Bacterial Abundance and Production Measured during the U.S. JGOFS Arabian Sea Process StudyEntry ID: USJGOFS_ARAB_BACT_ABUN_PROD
Abstract: A component of U.S. Joint Global Ocean Flux Study (JGOFS) is the
Arabian Sea Process Study. Eleven cruises took place aboard the R/V
Thomas G. Thompson for about sixteen months from October 1994 until
January 1996. These cruises provided seasonal coverage of the annual
monsoon and inter-monsoon cycles in the area southeast of Oman - from
... where the cruises were staged. The monsoons of the Arabian Sea drive
a uniquely intense carbon cycling system, and it is the goal of JGOFS
to better understand the role of the oceans in global carbon cycling.
The CTD rosette bottle sampler was used to collect water samples at
various depths. Water samples were filtered and stained. Bacteria
were counted by epifluorescence microscopy.
The water samples were also incubated with 3H-leucine and 3H-thymidine
to determine leucine and thymidine incorporation. These values can be
used to calculate bacterial production.
The final dataset contains depth profiles of bacterial abundance,
leucine incorporation, and thymidine incorporation for four of the
The data is public domain and can be retrieved on-line at
[This information was obtained from U.S. JGOFS website at WHOI.]
(Click for Interactive Map)
Start Date: 1994-10-01Stop Date: 1996-01-31
BIOLOGICAL CLASSIFICATION > BACTERIA/ARCHAEA > BACTERIAL ABUNDANCE
BIOLOGICAL CLASSIFICATION > BACTERIA/ARCHAEA > BACTERIAL PRODUCTION
BIOSPHERE > AQUATIC ECOSYSTEMS > PLANKTON > BACTERIOPLANKTON
BIOSPHERE > AQUATIC ECOSYSTEMS > PELAGIC HABITAT
BIOSPHERE > AQUATIC ECOSYSTEMS > MARINE HABITAT
BIOSPHERE > ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > SECONDARY PRODUCTION
Access Constraints The data are public domain and can be retrieved on-line from the
U.S. JGOFS World Wide Web server at WHOI.
Use Constraints Anyone wishing to use U.S. JGOFS data in a presentation, report,
thesis or publication should contact the originating PI. It is
expected that all customary courtesies and privileges attached to data
use will be strictly honored.
Data Set Progress
Distribution Media: Online
Email: hducklow at mbl.edu
Marine Biological Laboratory
City: Woods Hole
Province or State: MA
Postal Code: 02543
Smith, D. C. and F. Azam 1992. A simple, economical method for
measuring bacterial protein synthesis rates in seawater using
3H-leucine. Mar. Microb. Food Webs. 6: 107- 114.
Fuhrman, J. A. and F. Azam 1982. Thymidine incorporation as a measure
of heterotrophic bacterioplankton production in marine surface waters:
evaluation and field results. Mar. Biol. 66: 109-120.
Creation and Review Dates
Last DIF Revision Date: 2009-05-13