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     data   graph     files  public Zooplankton abundance and stages from MOCNESS nets from the RVIB Nathaniel B. Palmer from the
Southern Ocean, 2001-2002 (SOGLOBEC project, Southern Ocean Krill project)
   ?     I   M   background (external link) RSS Subscribe BCO-DMO bcodmo_dataset_2387

The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL access_formats String .htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson
attribute NC_GLOBAL acquisition_description String Zooplankton abundance, vertical and horizontal distribution, and population
structure were assessed using a 1 m^2 Multiple Opening and Closing Nets and
Environmental Sampling System (MOCNESS) with nine nets having 333 um mesh and
environmental sensors of temperature, salinity and depth. The entire water
column was sampled on the downcast using net # 0, which was not analyzed here.
The water column was typically sampled from close to the bottom at stations on
the shelf where depths were less than 1000 m, or to 1000m at stations off the
shelf where depths were often from 3000 to 4000 m. Nets 1 through 8 sampled
from various depth intervals to the surface with smaller strata near the
surface. Several tows targeted krill swarms by towing in a single strata.
Approximate locations of broadscale study stations are shown in Figs. 1-4,
below.

Zooplankton samples were immediately preserved in 5% buffered formalin
solution. In 2006, the samples were sent to the Atlantic Reference Centre,
Huntsman Marine Science Centre, St. Andrews, New Brunswick, Canada to be
sorted. All the large organisms (>15 mm) in the sample were removed and
identified to taxa. The sample was then split to about 100 individuals of
euphausiids. All euphausiids in the split were identified to species and life
history stage. Next, the sample was split to about 100 individuals of
copepods. Copepods were identified to species and life history stage (female,
male, copepodite V, or\u00a0other copepodite). All other zooplankton in the
split were identified to taxa and counted. For the Euchaetidae, we followed
the designation of Park (1994) who ascribed the Antarctic species to the genus
Paraeuchaeta. This data object ('zooabund_nbp') reports the counts of
zooplankton per subsample/split by taxa and life stage or size class. The
companion data object 'zooabund_lmg' reports similar for the MOCNESS samples
collected on the L.M. Gould cruises and data object 'krill' reports the
abundance of each euphausiid species by life stage and size class, also on the
L. M. Gould.

Displacement volume measurement:
Entire sample plus liquid was measured in a large graduated cylinder then
poured through a sieve into a second cylinder. The difference in volume is the
displacement volume.

Greenwich Mean Time was local time + 4 hours.

[](\\"http://globec.whoi.edu/images/NBP0103_TowPositions.png\\")

Fig. 1. NBP-0103: Locations for the oblique MOCNESS tows taken in austral fall
2001 as part of the broad-scale survey (solid dots) and the horizontal tows
taken in krill patches in Marguerite Bay (asterisks).

[](\\"http://globec.whoi.edu/images/NBP0104_TowPositions.png\\")

Fig. 2. NBP-0104: Locations for the oblique MOCNESS tows taken in austral
winter 2001 as part of the broad-scale survey.

[](\\"http://globec.whoi.edu/images/NBP0202_TowPositions.png\\")

Fig. 3. NBP-0202: Locations for the oblique MOCNESS tows taken in austral fall
2002 as part of the broad-scale survey.

[](\\"http://globec.whoi.edu/images/NBP0204_TowPositions.png\\")

Fig. 4. NBP-0204: Locations for the oblique MOCNESS tows taken in austral
winter 2002 as part of the broad-scale survey.
attribute NC_GLOBAL awards_0_award_nid String 54687
attribute NC_GLOBAL awards_0_award_number String ANT-0523332
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=0523332 (external link)
attribute NC_GLOBAL awards_0_funder_name String NSF Antarctic Sciences
attribute NC_GLOBAL awards_0_funding_acronym String NSF ANT
attribute NC_GLOBAL awards_0_funding_source_nid String 369
attribute NC_GLOBAL awards_0_program_manager String Dr Peter Milne
attribute NC_GLOBAL awards_0_program_manager_nid String 51468
attribute NC_GLOBAL awards_1_award_nid String 54773
attribute NC_GLOBAL awards_1_award_number String ANT-9910307
attribute NC_GLOBAL awards_1_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=9910307 (external link)
attribute NC_GLOBAL awards_1_funder_name String NSF Antarctic Sciences
attribute NC_GLOBAL awards_1_funding_acronym String NSF ANT
attribute NC_GLOBAL awards_1_funding_source_nid String 369
attribute NC_GLOBAL awards_1_program_manager String Dr Roberta Marinelli
attribute NC_GLOBAL awards_1_program_manager_nid String 51469
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String Zooplankton abundance based on taxa and life stages or size.
Southern Ocean MOCNESS species counts and abundance from the
N. B. Palmer 2001 and 2002 cruises.
Carin Ashjian, PI
versions:
111609: Replaced blank cells with zeros where no animals were found. (ttw)
081023: Corrected NBP0204, M4n1 depth_close, depth_mid and depth_interval (njc)
070820: Missing krill counts added (njc)
070816: Please note: the counts for euphausiids in NBP0103 and NBP0104 are not correct.
Additional animals were counted that are not included in this data. (njc)
070807: Correction made to NBP0103 tow-1 net-3 samp_fraction_denom. Changed from 256 to 1.3333 (njc)
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3
attribute NC_GLOBAL creator_email String info at bco-dmo.org
attribute NC_GLOBAL creator_name String BCO-DMO
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://www.bco-dmo.org/ (external link)
attribute NC_GLOBAL data_source String extract_data_as_tsv version 2.3 19 Dec 2019
attribute NC_GLOBAL date_created String 2010-06-16T20:40:39Z
attribute NC_GLOBAL date_modified String 2019-02-06T18:45:43Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.2387.1
attribute NC_GLOBAL Easternmost_Easting double -65.529
attribute NC_GLOBAL geospatial_lat_max double -65.147
attribute NC_GLOBAL geospatial_lat_min double -69.243
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -65.529
attribute NC_GLOBAL geospatial_lon_min double -75.603
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL geospatial_vertical_max double 800.0
attribute NC_GLOBAL geospatial_vertical_min double 0.0
attribute NC_GLOBAL geospatial_vertical_positive String down
attribute NC_GLOBAL geospatial_vertical_units String m
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/2387 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String MOC1
attribute NC_GLOBAL instruments_0_dataset_instrument_description String 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).
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 4154
attribute NC_GLOBAL instruments_0_description String 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 carries nine 1-m2 nets usually of 335 micrometer mesh and is intended for use with the macrozooplankton. All nets are black to reduce contrast with the background. A motor/toggle release assembly is mounted on the top portion of the frame and stainless steel cables with swaged fittings are used to attach the net bar to the toggle release. A stepping motor in a pressure compensated case filled with oil turns the escapement crankshaft of the toggle release which sequentially releases the nets to an open then closed position on command from the surface. -- from the MOCNESS Operations Manual (1999 + 2003).
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L22/current/NETT0097/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String MOCNESS1
attribute NC_GLOBAL instruments_0_instrument_nid String 437
attribute NC_GLOBAL instruments_0_supplied_name String MOCNESS1
attribute NC_GLOBAL keywords String abundance, bco, bco-dmo, biological, chemical, comments, cruiseid, data, dataset, day, day_local, depth, depth_close, depth_mid, depth_open, depth_w, displ, displ_vol, dmo, erddap, event, filt, group, latitude, local, longitude, management, month, month_local, net, oceanography, office, preliminary, region, stage, station, taxon, taxon_group, time, time_local, tow, vol, vol_filt, year, yrday, yrday_local
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/2387/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/2387 (external link)
attribute NC_GLOBAL Northernmost_Northing double -65.147
attribute NC_GLOBAL param_mapping String {'2387': {'lat': 'master - latitude', 'lon': 'master - longitude', 'depth_close': 'flag - depth'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/2387/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_0_affiliation_acronym String WHOI
attribute NC_GLOBAL people_0_person_name String Carin J. Ashjian
attribute NC_GLOBAL people_0_person_nid String 50381
attribute NC_GLOBAL people_0_role String Principal Investigator
attribute NC_GLOBAL people_0_role_type String originator
attribute NC_GLOBAL people_1_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_1_affiliation_acronym String WHOI
attribute NC_GLOBAL people_1_person_name String Peter H. Wiebe
attribute NC_GLOBAL people_1_person_nid String 50454
attribute NC_GLOBAL people_1_role String Principal Investigator
attribute NC_GLOBAL people_1_role_type String originator
attribute NC_GLOBAL people_2_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_2_affiliation_acronym String WHOI
attribute NC_GLOBAL people_2_person_name String Nancy Copley
attribute NC_GLOBAL people_2_person_nid String 50396
attribute NC_GLOBAL people_2_role String Technician
attribute NC_GLOBAL people_2_role_type String related
attribute NC_GLOBAL people_3_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_3_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_3_person_name String Nancy Copley
attribute NC_GLOBAL people_3_person_nid String 50396
attribute NC_GLOBAL people_3_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_3_role_type String related
attribute NC_GLOBAL project String SOGLOBEC,Southern Ocean Krill
attribute NC_GLOBAL projects_0_acronym String SOGLOBEC
attribute NC_GLOBAL projects_0_description String The fundamental objectives of United States Global Ocean Ecosystems Dynamics (U.S. GLOBEC) Program are dependent upon the cooperation of scientists from several disciplines. Physicists, biologists, and chemists must make use of data collected during U.S. GLOBEC field programs to further our understanding of the interplay of physics, biology, and chemistry. Our objectives require quantitative analysis of interdisciplinary data sets and, therefore, data must be exchanged between researchers. To extract the full scientific value, data must be made available to the scientific community on a timely basis.
attribute NC_GLOBAL projects_0_geolocation String Southern Ocean
attribute NC_GLOBAL projects_0_name String U.S. GLOBEC Southern Ocean
attribute NC_GLOBAL projects_0_project_nid String 2039
attribute NC_GLOBAL projects_0_project_website String http://www.ccpo.odu.edu/Research/globec_menu.html (external link)
attribute NC_GLOBAL projects_0_start_date String 2001-01
attribute NC_GLOBAL projects_1_acronym String Southern Ocean Krill
attribute NC_GLOBAL projects_1_description String The U.S. Global Ocean Ecosystems Dynamics (U.S. GLOBEC) program has the goal of understanding and ultimately predicting how populations of marine animal species respond to natural and anthropogenic changes in climate. Research in the Southern Ocean (SO) indicates strong coupling between climatic processes and ecosystem dynamics via the annual formation and destruction of sea ice. The Southern Ocean GLOBEC Program (SO GLOBEC) will investigate the dynamic relationship between physical processes and ecosystem responses through identification of critical parameters that affect the distribution, abundance and population dynamics of target species. The overall goals of the SO GLOBEC program are to elucidate shelf circulation processes and their effect on sea ice formation and krill distribution, and to examine the factors which govern krill survivorship and availability to higher trophic levels, including penguins, seals and whales. The focus of the U.S. contribution to the international SO GLOBEC program will be on winter processes. This component will focus on juvenile and adult krill and mesozooplankton prey distribution and abundance using a sophisticated instrument package, BIOMAPPER II, which is equipped with an acoustic backscatter sonar system, a video plankton recorder and an environmental sensor system. The system is used in large-scale studies. Additionally, a remotely-operative vehicle will be used to map the distribution and behavior of krill under ice. The result of the integrated SO GLOBEC program will be to improve the predictability of living marine resources, especially with respect to local and global climatic shifts.
attribute NC_GLOBAL projects_1_end_date String 2005-09
attribute NC_GLOBAL projects_1_geolocation String Southern Ocean
attribute NC_GLOBAL projects_1_name String GLOBEC: Winter Distribution and Success of Southern Ocean Krill
attribute NC_GLOBAL projects_1_project_nid String 616193
attribute NC_GLOBAL projects_1_start_date String 2000-10
attribute NC_GLOBAL publisher_name String Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute NC_GLOBAL publisher_type String institution
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL Southernmost_Northing double -69.243
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String Zooplankton from MOCNESS nets were identified and the net sample displacement volume was measured from the RVIB Nathaniel B. Palmer, Southern Ocean, 2001-2002.
attribute NC_GLOBAL title String Zooplankton abundance and stages from MOCNESS nets from the RVIB Nathaniel B. Palmer from the Southern Ocean, 2001-2002 (SOGLOBEC project, Southern Ocean Krill project)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -75.603
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable cruiseid   String  
attribute cruiseid bcodmo_name String cruiseid
attribute cruiseid description String Cruise identifier (NBP0103, NBP0104, NBP0202, NBP0204)
attribute cruiseid long_name String Cruiseid
variable year   short  
attribute year _FillValue short 32767
attribute year actual_range short 2001, 2002
attribute year bcodmo_name String year
attribute year description String Year of cruise
attribute year long_name String Year
attribute year nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/YEARXXXX/ (external link)
variable station   String  
attribute station bcodmo_name String station
attribute station description String Station number or designation (e.g. MB = Marguerite Bay)
attribute station long_name String Station
variable tow   String  
attribute tow bcodmo_name String tow
attribute tow description String Net tow number
attribute tow long_name String Tow
variable month_local   String  
attribute month_local bcodmo_name String month_local
attribute month_local description String Month of year, local time
attribute month_local long_name String Month Local
variable day_local   String  
attribute day_local bcodmo_name String day_local
attribute day_local description String Day of month, local time
attribute day_local long_name String Day Local
variable time_local   String  
attribute time_local bcodmo_name String time_local
attribute time_local description String Time local, GMT = local time +4 hours
attribute time_local long_name String Time Local
attribute time_local units String HHmm
variable event   String  
attribute event bcodmo_name String event
attribute event description String Event number from cruise event log; unique ID
attribute event long_name String Event
attribute event nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/EVTAGFL/ (external link)
variable latitude   double  
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double -69.243, -65.147
attribute latitude axis String Y
attribute latitude bcodmo_name String latitude
attribute latitude colorBarMaximum double 90.0
attribute latitude colorBarMinimum double -90.0
attribute latitude description String Latitude at beginning of net tow, negative = South
attribute latitude ioos_category String Location
attribute latitude long_name String Latitude
attribute latitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LATX/ (external link)
attribute latitude standard_name String latitude
attribute latitude units String degrees_north
variable longitude   double  
attribute longitude _CoordinateAxisType String Lon
attribute longitude _FillValue double NaN
attribute longitude actual_range double -75.603, -65.529
attribute longitude axis String X
attribute longitude bcodmo_name String longitude
attribute longitude colorBarMaximum double 180.0
attribute longitude colorBarMinimum double -180.0
attribute longitude description String Longitude at beginning of net tow, negative = West
attribute longitude ioos_category String Location
attribute longitude long_name String Longitude
attribute longitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LONX/ (external link)
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
variable depth_w   String  
attribute depth_w bcodmo_name String depth_w
attribute depth_w description String Depth of water
attribute depth_w long_name String Depth
attribute depth_w standard_name String depth
attribute depth_w units String meters
variable region   String  
attribute region bcodmo_name String region
attribute region description String Geographic region
attribute region long_name String Region
variable yrday_local   float  
attribute yrday_local _FillValue float NaN
attribute yrday_local actual_range float 104.097, 253.802
attribute yrday_local bcodmo_name String yrday_local
attribute yrday_local description String local day and decimal time, as 326.5 for the 326th day of the year, or November 22, at 1200 hours (noon)
attribute yrday_local long_name String Yrday Local
variable net   byte  
attribute net _FillValue byte 127
attribute net actual_range byte 1, 8
attribute net bcodmo_name String net
attribute net description String Net number
attribute net long_name String Net
variable depth_open   short  
attribute depth_open _FillValue short 32767
attribute depth_open actual_range short 9, 1000
attribute depth_open bcodmo_name String depth_open
attribute depth_open colorBarMaximum double 8000.0
attribute depth_open colorBarMinimum double -8000.0
attribute depth_open colorBarPalette String TopographyDepth
attribute depth_open description String Depth each net was opened
attribute depth_open long_name String Depth
attribute depth_open standard_name String depth
attribute depth_open units String meters
variable depth   double  
attribute depth _CoordinateAxisType String Height
attribute depth _CoordinateZisPositive String down
attribute depth _FillValue double NaN
attribute depth actual_range double 0.0, 800.0
attribute depth axis String Z
attribute depth bcodmo_name String depth_close
attribute depth colorBarMaximum double 8000.0
attribute depth colorBarMinimum double -8000.0
attribute depth colorBarPalette String TopographyDepth
attribute depth description String Depth each net was closed
attribute depth ioos_category String Location
attribute depth long_name String Depth
attribute depth positive String down
attribute depth standard_name String depth
attribute depth units String m
variable depth_mid   float  
attribute depth_mid _FillValue float NaN
attribute depth_mid actual_range float 5.0, 900.0
attribute depth_mid bcodmo_name String depth_mid
attribute depth_mid colorBarMaximum double 8000.0
attribute depth_mid colorBarMinimum double -8000.0
attribute depth_mid colorBarPalette String TopographyDepth
attribute depth_mid description String Mid-depth of strata that each net sampled
attribute depth_mid long_name String Depth
attribute depth_mid standard_name String depth
attribute depth_mid units String meters
variable vol_filt   float  
attribute vol_filt _FillValue float NaN
attribute vol_filt actual_range float 72.1, 1577.0
attribute vol_filt bcodmo_name String vol_filt
attribute vol_filt description String Volume of water filtered by each net
attribute vol_filt long_name String Vol Filt
attribute vol_filt units String meters3
variable displ_vol   float  
attribute displ_vol _FillValue float NaN
attribute displ_vol actual_range float 0.2, 492.0
attribute displ_vol bcodmo_name String disp_vol
attribute displ_vol description String Sample displacement volume1 (biovolume)
attribute displ_vol long_name String Displ Vol
attribute displ_vol units String milliliters
variable taxon_group   String  
attribute taxon_group bcodmo_name String unknown
attribute taxon_group description String Taxonomic group (Euphausiids, Copepods, Other Zooplankton)
attribute taxon_group long_name String Taxon Group
variable taxon   String  
attribute taxon bcodmo_name String taxon
attribute taxon description String Scientific name of organism or common name of group
attribute taxon long_name String Taxon
variable stage   String  
attribute stage bcodmo_name String stage
attribute stage description String Life history stage, size class or gender e.g.: CV = copepodite stage V  C3 = calyptopis stage 3  F2 = furcilia stage 2  lt_15mm = size class less than 15 mm  gt_15mm = size class greater than 15 mm  male  female
attribute stage long_name String Stage
variable abundance   float  
attribute abundance _FillValue float NaN
attribute abundance actual_range float 0.0, 253.9299
attribute abundance bcodmo_name String unknown
attribute abundance description String Density of individuals within stage/size interval. Calculated as: num_counted * samp_fraction_denom / vol_filt
attribute abundance long_name String Abundance
attribute abundance units String number per meter3
variable comments   String  
attribute comments bcodmo_name String comment
attribute comments description String comments pertaining to the taxon in the record
attribute comments long_name String Comments
attribute comments units String unitless

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.


 
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