Dataset: grazing
Deployment: TT008

Mesozooplankton grazing rates

Principal Investigator:

Hans G. Dam (University of Connecticut, UConn)

BCO-DMO Data Manager:

Cynthia L. Chandler (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

U.S. JGOFS Equatorial Pacific (EqPac)

Version:

December 8, 1994

Deployment Synonyms:

EqPac Spring Time Series

Version Date:

1994-12-08

Data URL:

https://osprey.bco-dmo.org/dataset-deployment/450865/data

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Description

Mesozooplankton grazing rates

Methods & Sampling

Dataset acquisition description

See Platform deployments for cruise specific documentation

Deployment-specific acquisition description

   PI:              Hans Dam
   of:              University of Connecticut
   dataset:         Mesozooplankton grazing rates
   dates:           March 23, 1992 to April 06, 1992
   location:        N: 0.0932  S: -0.0685  W: -140.076  E: -139.8945
   project/cruise:  EQPAC/TT008 - Spring Time Survey
   ship:            Thomas Thompson
 
   Notes: The data below represent weight-specific grazing rates of
   mesozooplankton as a function of day of year, size fractions
   of animals and depth interval for the time-series cruise TT008 of
   the EqPac study.   All experiments were carried out at equator.

   Grazing was measured with the gut fluorescence technique. Details 
   are given in the EqPac Protocols.  Mean GCRC (gut clearance rate constant) 
   of this cruise (0.031 min-1) was used. 

   The grazing values are the means of 2-5 pseudoreplicates from each 
   tow.  Contact Hans Dam for additional pseudoreplicate values.

Data Processing Description

Dataset Processing Description

More information about this dataset deployment

Instruments

MOCNESS.25

Supplied Description:

Mesozooplankton (> 64 µm) were collected from day/night pairs of tows with a 0.25 m-mouth area MOCNESS equipped with nine nets with a 7:1, mouth:length ratio (Wiebe et al., 1985).

Instrument Type

Generic Name: MOCNESS.25

Acronym: MOC.25

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/NETT0097/

Generic Description:

The Multiple Opening/Closing Net and Environmental Sensing System or MOCNESS is a family of net systems based on the Tucker Trawl principle. The MOCNESS-1/4 carries nine 1/4-m2 nets usually of 64 micrometer mesh and is used to sample the larger micro-zooplankton.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
yrday	day of year		no_bcodmo_term
event	event number from event log, a composite of month/day/time local Hawaii time		event
sta	station number from event log		no_bcodmo_term
depth_r	depth range/interval sampled	meters	no_bcodmo_term
sizefrac	size fraction/interval of organisms analyzed	millimeters	no_bcodmo_term
graze_rate	grazing rate	milligrams pigment/milligrams body C/hour	no_bcodmo_term

Database

Contribute Data

Dataset: grazing
Deployment: TT008

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: grazingDeployment: TT008

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Dataset: grazing
Deployment: TT008