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BIOMASS, TAXONOMIC CODE and species abundance tows data collected in the South Atlantic Ocean and South Pacific Ocean on the NATHANIEL B. PALMER cruises NBP0103 and NBP0104 as part of the Southern Ocean GLOBEC project from 2001-04-30 to 2001-08-26 (NCEI Accession 0112172)

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NCEI Accession 0112172 includes tows and biological data collected aboard the NATHANIEL B. PALMER during cruises NBP0103 and NBP0104 in the South Atlantic Ocean and South Pacific Ocean from 2001-04-30 to 2001-08-26. These data include BIOMASS, TAXONOMIC CODE and species abundance. The instruments used to collect these data include Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS). These data were collected by Carin J. Ashjian of Woods Hole Oceanographic Institution as part of Southern Ocean GLOBEC. The Biological and Chemical Oceanography Data Management Office (BCO-DMO) submitted these data to NODC on 2013-08-01.

The following is the text of the abstract provided by BCO-DMO:

Zooplankton abundance and biomass from MOCNESS nets using silhouette analysis
NB Palmer, austral fall & winter of 2001 & 2002
The MOCNESS-1 plankton sampler has nine rectangular nets (1m x 1.4 m) with a mesh size of 0.333 mm, which are opened and closed sequentially by commands through conducting cable from the surface (Wiebe et al., 1976).
Cruises:
Nathaniel B. Palmer, April-June 2001 (NBP01-03), 24 tows, cruise report (http://globec.whoi.edu/jg/serv/globec/soglobec/inventory.html2{dir=globec.whoi.edu/jg/dir/globec/soglobec/,info=globec.whoi.edu/jg/info/globec/soglobec/inventory}?project%20eq%20NBP0103,data_type%20eq%20cruise_report)
Nathaniel B. Palmer, July-Sept. 2001 (NBP01-04), 17 tows, cruise report (http://globec.whoi.edu/jg/serv/globec/soglobec/inventory.html2{dir=globec.whoi.edu/jg/dir/globec/soglobec/,info=globec.whoi.edu/jg/info/globec/soglobec/inventory}?project%20eq%20NBP0104,data_type%20eq%20cruise_report)
Nathaniel B. Palmer, April-May 2002 (NBP02-02), 24 tows, cruise report (http://globec.whoi.edu/jg/serv/globec/soglobec/inventory.html2{dir=globec.whoi.edu/jg/dir/globec/soglobec/,info=globec.whoi.edu/jg/info/globec/soglobec/inventory}?project%20eq%20NBP0202,data_type%20eq%20cruise_report)
Nathaniel B. Palmer, July-Sept. 2002 (NBP02-04), 19 tows, cruise report (http://globec.whoi.edu/jg/serv/globec/soglobec/inventory.html2{dir=globec.whoi.edu/jg/dir/globec/soglobec/,info=globec.whoi.edu/jg/info/globec/soglobec/inventory}?project%20eq%20NBP0204,data_type%20eq%20cruise_report)
This is a graph of the vertical distribution of biomass from the Winter 2001 Cruise, NBP0103:

This is a graph of the vertical distribution of biomass from the Winter 2001 Cruise, NBP0104:

MOCNESS Sample Analysis
(From Ashjian et al., 2004)
Biomass (wet weight) and abundance were determined principally by silhouette digitization of taxa lengths and conversion to equivalent wet weights according to the equations and methods adapted from Davis and Wiebe (1985) and Wiebe et al. (2004). New formulas were calculated for Southern Ocean krill because the length-weight relationship (Wet Weight = 0.0054*Length3.214) differed from that of the North Atlantic euphausiids (Wet Weight = 0.0138*Length3.071; Davis and Wiebe, 1985).
Silhouette photographs first were obtained from each sample; this photograph then was scanned with an Epson Expression 1600 scanner at 1200 dpi to produce a Tagged Image File Format (TIF) image. Identification and measurement of organisms from the tiff image were accomplished manually using the specialized MATLAB (Mathworks, Inc.) routine, the WHOI Silhouette DIGITIZER (http://globec.whoi.edu/software/digi_prog/WHOI_Silhouette_DIGITIZER.htm) (v 1.0) (Little and Copley, 2003). A scanned photographic image of an aliquot of a sample was displayed with a superimposed reference grid on the computer screen. The operator identified each organism to taxonomic and/or size category by selecting the appropriate category button. Organism lengths (both straight and curved) then were measured by the operator using the cursor on the computer screen. Although the nominal resolution of the measurement is 0.02 mm, in practice the resolution was ~0.05 mm. In instances where there were too many organisms of a given type to justify measuring every individual organism, the DIGITIZER routine generated a list of randomly located cells to systematically sub-sample the overall image. Each organism's biomass was calculated automatically from its length measurement using the appropriate length-weight relationship.
References:
Ashjian, C.J, Rosenwaks, G.A., Wiebe, P.H., Davis, C.S., Gallager, S.M., Copley, N.J., Lawson, G.L., Alatalo, P. 2004. Distribution of Zooplankton on the Continental Shelf of Marguerite Bay, Antarctic Peninsula, during Austral Fall and Winter, 2001. Deep-Sea Research II 51(17-19): 2073-2098.
Davis, C.S., Wiebe, P.H., 1985. Macrozooplankton biomass in a warm-core Gulf Stream ring: Time series changes in size structure, taxonomic composition, and vertical distribution. Journal of Geophysical Research 90, 8871-8882.
Little. W.S., Copley, N.J. 2003. WHOI Silhouette Digitizer version 1.0 User's Guide. Woods Hole Oceanographic Institution Technical Report #2003-05, 63 pp.
Wiebe, P.H., K.H. Burt, S. H. Boyd, A.W. Morton, 1976. The multiple opening/closing net and environmental sensing system for sampling zooplankton. Journal of Marine Research, 34(3): 313-326.
Wiebe, P.H., C. J. Ashjian, S. M. Gallager, C. S. Davis, G. L. Lawson, and N. J. Copley. 2004. Using a high powered strobe light to increase the catch of Antarctic krill. Marine Biology. 144(3): 493 - 502.

Figure 1. Map of Tow locations, Fall and Winter, 2001

Table 1. Summary of locations, times, and depths for the twelve net tows.
(Note: Winter tows 14 and 15 were considered one tow because when ice and malfunction led to no data in the top three nets of Tow 14, MOC Tow 15 was fished in the upper 90 meters to compensate.)

Cruise
Region
Tow
Number
Date
Time
(Local)
Light*
Lat(°S)
Lon(°W)
Tow Depth(m)
Bottom Depth(m)
Ice Cover
(tenths)

Fall
Offshore
6
05/04/01
1332
D
66° 40.17
73° 22.08
0-1001
3650
0

Midshelf 1
1
04/30/01
2050
N
66° 10.80
69° 10.47
0-306
360
0

Midshelf 2
3
05/02/01
0320
N
66° 48.53
70° 21.42
0-348
600
0

Midshelf 3
12
05/13/01
1830
N
68° 23.62
72° 18.44
0-356
400
0

Midshelf 4
16
05/18/01
0854
N
68° 59.43
74° 55.77
0-340
350
0

Marguerite Bay
24
05/29/01
0300
N
67° 55.33
68° 30.69
0-602
690
0

Winter
Offshore
11
08/11/01
0918
T
67° 14.69
74° 25.27
0-989
2917
10

Midshelf 1
17
08/26/01
0306
N
66° 11.13
69° 06.21
7-305
346
6

Midshelf 2
4
07/31/01
0949
D
66° 45.18
70° 09.64
11-413
501
8

Midshelf 3
13
08/17/01
2117
N
68° 13.21
72° 56.53
0-230
325
10

Midshelf 4
14
08/21/01
1136
D
69° 15.55
75° 34.00
20-290
~340
7

15
08/22/01
0327
N
69° 12.30
75° 43.90
0-91
~350
9

Marguerite Bay
9
08/08/01
0215
N
67° 53.74
68° 10.82
0-488
600+
9

*Light conditions are designated as:
"D" = day, sunlight present;
"N" = night, darkness;
"T" = twilight
See companion data sets:
1. Zooplankton biovolume values from MOCNESS tows (http://globec.whoi.edu/jg/serv/globec/soglobec/mocness_biovols_rs.html0%7Bdir=globec.whoi.edu/jg/dir/globec/soglobec/,info=globec.whoi.edu/jg/info/globec/soglobec/mocness_biovols%7D) - this data set is derived from displacement volume measurements and dry weight conversion calculations from the same set of samples as the above data.
2. Zooplankton Abundance Based on Taxa and Life Stages or Size (http://globec.whoi.edu/jg/serv/globec/soglobec/zooabund_nbp.html0{dir=globec.whoi.edu/jg/dir/globec/soglobec/,info=globec.whoi.edu/jg/info/globec/soglobec/zooabund_nbp}) - these abundance values on the same tows were derived by counting and identifying a subset of the zooplankton to the species and life stage for euphausiids and dominant copepods and to taxonomic group with broad size categories for other zooplankton (pteropod, chaetognath, polychaete, etc.).

For Information, contact:
Carin Ashjian
Woods Hole Oceanographic Institution
Woods Hole, MA 02543
508-289-3457 (ph) 508-457-2169 (fax)
cashjian@whoi.edu
http://www.whoi.edu/science/B/people/cashjian/index.html
-or-
Nancy Copley
Woods Hole Oceanographic Institution
Woods Hole, MA 02543
508-289-3204 (ph) 508-457-2169 (fax)
ncopley@whoi.edu
last updated 08/15/06
  • Cite as: Ashjian, Carin J. (2013). BIOMASS, TAXONOMIC CODE and species abundance tows data collected in the South Atlantic Ocean and South Pacific Ocean on the NATHANIEL B. PALMER cruises NBP0103 and NBP0104 as part of the Southern Ocean GLOBEC project from 2001-04-30 to 2001-08-26 (NCEI Accession 0112172). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0112172. Accessed [date].
gov.noaa.nodc:0112172
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Distributor NOAA National Centers for Environmental Information
NCEI.Info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Time Period 2001-04-30 to 2001-08-26
Spatial Bounding Box Coordinates
N: -65.1467
S: -69.243
E: -65.5287
W: -75.7317
Spatial Coverage Map
General Documentation
Associated Resources
  • Biological, chemical, physical, biogeochemical, ecological, environmental and other data collected from around the world during historical and contemporary periods of biological and chemical oceanographic exploration and research managed and submitted by the Biological and Chemical Oceanography Data Management Office (BCO-DMO)
    • NCEI Collection
      Navigate directly to the URL for data access and direct download.
  • zooplankton abund biomass_MOC - nbp from the SOGLOBEC,Southern Ocean Krill projects of the U.S. GLOBEC,U.S. GLOBEC programs
  • Parent ID (indicates this dataset is related to other data):
    • gov.noaa.nodc:BCO-DMO
Publication Dates
  • publication: 2013-08-19
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility
Data Update Frequency As needed
Supplemental Information
The Data Originator(s)/Principal Investigator(s) for these data:
Carin J. Ashjian, Woods Hole Oceanographic Institution

The data were collected during the following cruise(s):
NBP0103
NBP0104

The collection of the data was supported by:
NSF Division of Antarctic Sciences
Purpose This dataset is available to the public for a wide variety of uses including scientific research and analysis.
Use Limitations
  • accessLevel: Public
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Dataset Citation
  • Cite as: Ashjian, Carin J. (2013). BIOMASS, TAXONOMIC CODE and species abundance tows data collected in the South Atlantic Ocean and South Pacific Ocean on the NATHANIEL B. PALMER cruises NBP0103 and NBP0104 as part of the Southern Ocean GLOBEC project from 2001-04-30 to 2001-08-26 (NCEI Accession 0112172). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0112172. Accessed [date].
Cited Authors
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Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
BCO-DMO Data Elements Thesaurus
  • abundance
  • abundance_total
  • biomass
  • biomass_total
  • cruiseid
  • depth_close
  • depth_mid
  • depth_open
  • depth_w
  • lat
  • lon
  • net
  • taxon
  • tow
  • year
Global Change Master Directory (GCMD) Science Keywords
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS
Platform keywords NODC PLATFORM NAMES THESAURUS Global Change Master Directory (GCMD) Platform Keywords ICES/SeaDataNet Ship Codes
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords
Project keywords NODC PROJECT NAMES THESAURUS Global Change Master Directory (GCMD) Project Keywords
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Ashjian, Carin J. (2013). BIOMASS, TAXONOMIC CODE and species abundance tows data collected in the South Atlantic Ocean and South Pacific Ocean on the NATHANIEL B. PALMER cruises NBP0103 and NBP0104 as part of the Southern Ocean GLOBEC project from 2001-04-30 to 2001-08-26 (NCEI Accession 0112172). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0112172. Accessed [date].
Access Constraints
  • Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Fees
  • In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Lineage information for: dataset
Processing Steps
  • 2013-08-19T19:23:07Z - NCEI Accession 0112172 v1.1 was published.
Output Datasets
Lineage information for: repository
Processing Steps
  • 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
Acquisition Information (collection)
Instrument
  • Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS)
Platform
  • RV Nathaniel B. Palmer
Last Modified: 2021-10-16T20:58:24Z
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