Dataset: MOC10_abund
Deployment: OC275

Zooplankton abundance data from the 10m2 MOCNESS

Co-Principal Investigator:

Mr Erich Horgan (Woods Hole Oceanographic Institution, WHOI)

Dr Laurence P. Madin (Woods Hole Oceanographic Institution, WHOI)

BCO-DMO Data Manager:

Ms Dicky Allison (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

U.S. GLOBEC Georges Bank (GB)

Data URL:

https://osprey.bco-dmo.org/dataset-deployment/449493/data

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Description

Organism abundance derived from sampling by the
10 m² MOCNESS system

Important information:

The catch from each net was subsampled and all animals in the subsample were counted.
Due to the shear volume of data, only those animals found were represented in these on-line data. i.e., no animals with zero abundances were listed.
The precision variation in the latitude and longitude numbers is as reported.
Not all nets for all tows are represented here. Some nets came back empty.

NOTE: See the companion file containing the length measurements of the organisms screened. moc10data lengths (https://www.bco-dmo.org/dataset/2327)

Any questions, contact:

Erich Horgan
Woods Hole Oceanographic Institution
Woods Hole, MA  02543

voice: (508) 289-3207
fax: (508) 457-2169 
e-mail: ehorgan@whoi.edu

December 2, 2005 mda

Methods & Sampling

Dataset acquisition description

Zooplankton Data from the 10m2 MOCNESS.

Deployment-specific acquisition description

Zooplankton Data from the 10m2 MOCNESS.

Data Processing Description

Dataset Processing Description

The catch from each net was subsampled and all animals in the subsample were counted.
Due to the shear volume of data, only those animals found were represented in these on-line data. i.e., no animals with zero abundances were listed.
The precision variation in the latitude and longitude numbers is as reported.
Not all nets for all tows are represented here. Some nets came back empty.

Deployment-specific processing description

<ul>
<li>The catch from each net was subsampled and <u>all</u> animals in the subsample were counted.</li>
<li>Due to the shear volume of data, only those animals found were represented in these on-line data. <i>i.e.</i>, no animals with zero abundances were listed.</li>
<li>The precision variation in the latitude and longitude numbers is as reported.</li>
<li>Not all nets for all tows are represented here. Some nets came back empty.</li>
</ul>

More information about this dataset deployment

Funding

Award Number	Funding Source
unknown GB NOAA	National Oceanic and Atmospheric Administration
unknown GB NSF	National Science Foundation

Instruments

MOCNESS10

Supplied Description:

MOCNESS 10 meter square nets (3 millimeter mesh).

Instrument Type

Generic Name: MOCNESS10

Acronym: MOC10

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

Generic Description:

The Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS) is based on the Tucker Trawl principle (Tucker, 1951). The MOCNESS-10 (with 10 m^2 nets) carries 6 nets of 3.0-mm circular mesh which are opened and closed sequentially by commands through conducting cable from the surface (Wiebe et al., 1976). In this system, "the underwater unit sends a data frame, comprising temperature, depth, conductivity, net-frame angle, flow count, time, number of open net, and net opening/closing, to the deck unit in a compressed hexadecimal format every 2 seconds and from the deck unit to a microcomputer every 4 seconds" (Wiebe et al., 1985).

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
cruiseid	cruise identification	text	cruiseid
year	year, 4 digit year in YYYY format	unitless	year
month_local	month of year, local time, (01-12) in mm (01 to 12) format	unitless	month_local
station_std	standard station number	integer	station_std
time_of_day	Day or Night	text	time_of_day
time_start	time at start of tow, local time in hhmm format	unitless	time_start
time_end	time at end of tow in hhmm format.	unitless	time_end
lat	latitude (negative = South)	DD.D	lat
lon	longitude (negative = West)	DDD.D	lon
net	net number, one of 4 nets (1-4)	integer	net
depth_mid	depth at the midpoint of the opened net	meters	depth_mid
depth_interval	depth range sampled by the opened net	meters	depth_interval
vol_filt	volume of water filtered through the net	cubic meters (m^3)	vol_filt
species	species name	text	species
phylum	organism classification by phylum	text	phylum
abund	species abundance in number of animals per 1000 cubic meters	number per cubic meters (n/1000 m^3)	abundance
order	organism classification by order	text	order
family	organism classification by family		family

Database

Contribute Data

Dataset: MOC10_abund
Deployment: OC275

Organism abundance derived from sampling by the
10 m² MOCNESS system

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Deployment-specific processing description

Database

Contribute Data

Dataset: MOC10_abundDeployment: OC275

Organism abundance derived from sampling by the 10 m2 MOCNESS system

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Deployment-specific processing description

Dataset: MOC10_abund
Deployment: OC275

Organism abundance derived from sampling by the
10 m² MOCNESS system