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FRANKLIN CRUISES FR 8/90, 5/92 AND 8/93 DATA DOCUMENTATION JGOFS WESTERN EQUATORIAL PACIFIC PROCESS STUDY

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FRANKLIN CRUISES FR 8/90, 5/92 AND 8/93 DATA DOCUMENTATION

JGOFS WESTERN EQUATORIAL PACIFIC PROCESS STUDY

[1] General:

Parameter: Zooplankton biomass

Level 1: Yes

Principal Investigator: Brian Griffiths

Institute Address: CSIRO Division of Marine Research E-Mail Address: Brian.Griffiths@marine.csiro.au

List of Parameters: Zooplankton biomass and taxon content List of Units: Biomass as settled volume (ml m-3)

[2] Sampling:

Gear (e.g. CTD, pump, etc.): Free-fall plankton net 0.28 m-2 mouth area, 200 um mesh apeture

Standard Depths: 0-100m

Chemicals used: Samples fixed in 4% buffered formaldehyde.

Special Procedures: Settled volumes done between 3 and 6 months after sampling.

3] Analysis:

Instrument: Settled volume and major taxa only

Method: Samples allowed to settle in graduated conical centrifuge tubes for 7 days, and settled volume read to the nearest milliltre. The samples were then examined under a disecting microscope, and the major components

identified as taxa (copepods, euphausiids, chaetognaths, salps, etc).

Precision: estimated as 5%

Comments: No data from FR 9008.

[4] Results:

Quality of Data: FR 9205 and FR 9308 good.

Known Problems: No data from FR 9008.

[5] Brief description of analytical method

[6] Comments: None

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