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     data   graph     files  public Plankton biovolume data from MOCNESS tows, 2001-2002 NBPalmer cruises NBP0103, NBP0104,
NBP0202, NBP0204 from the Southern Ocean (SOGLOBEC project)
   ?     I   M   background (external link) RSS Subscribe BCO-DMO bcodmo_dataset_2372

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 This data set is derived from displacement volume measurements and dry weight
conversion calculations. 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).

Methods:
Displacement volume measurement: The 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.
Detailed instructions:

Measuring Displacement Volume
Supplies: rubber gloves, safety goggles, 2 1-liter graduated cylinders, 2
smaller graduated cylinders (25 to 100 ml), 2 funnels: 1 wide-necked open
funnel and 1 small-necked one with mesh attached to the inside or a sieve that
fits inside the small-necked funnel, squeeze bottles (water and formalin or
other preservative), sieve of mesh size equal to or smaller than that on
sampling net.
Put on rubber gloves
Remove jars for 1 net from sample box (may be from one to many jars for a
single net sample)
Fill in the data sheet with MOC tow#, date, and net#. jar#
Take first sample to hood. Put on safety goggles.
Remove lid and internal label with long forceps. Get most of zooplankton off
by dipping into jar and place label inside lid after checking that internal
label agrees with lid label.
Remove large (>5cc) animals (medusae, some fish or shrimp) and measure their
displacement volume in the small graduated cylinders:
-Put animal and enough liquid to cover in one small graduated cylinder.-Note
this volume on
data sheet.
-Place small sieve in small funnel and set them on top of second empty small
grad graduated cylinder.
-Pour animal plus liquid into sieve and let drain.
-Note this volume on data sheet as well as the type of animal.
-Return the specimen to the main sample.
Pour the large sample into the 1-liter graduated cylinder using the open
funnel on top (no mesh in funnel). Rinse sparingly the jar, funnel and sides
of the graduated cylinder. Diluting the sample with water could cause it to
rot. Add a little water with the squeeze bottle to bring the level up to an
even line on the graduated cylinder.
Note this volume on the data sheet (sample + liquid)
Place the large funnel containing the sieve or mesh on top of the second,
empty graduated cylinder.
Pour the sample into the empty grad. Don't worry about animals stuck to the
sides of the first grad. Do not add any liquid to wash sample into the second
grad.
Swirl the funnel to remove excess liquid until most of liquid is done
dripping (about 1 minute, but varies sample to sample). Carefully drawing the
samples toward the center with large forceps is sometimes helpful.
Note this volume on data sheet (liquid vol.)
Rinse the graduated cylinder and the mesh-funnel into the sieve with the
hose and return most of the dry sample to the jar using the open funnel.
Use water from faucet with hose to wash the sample on sieve to one side and
then use squirt bottle of water (sparingly) or the preservative filled one to
rinse the sample from sieve to jar.
Add enough of the filtered formalin to fill the jar, dispose of remainder in
appropriate waste container.
- Check the sample's pH and add buffer (sodium borate or borax) if = 8.0.
- Replace cap, swirl if buffer of formalin was added, and rinse outside of
jar.
- Rinse everything well after each net sample.

Dry weight calculations:
dry weight = (dvol/(100.139))(1/1.003); [mg/m3]
integrated dry weight = depth interval * dry weight; [mg/m2]
total dry weight for the entire sampled water column = sum of integrated dry
weights for all nets for one tow; [mg/m2]
attribute NC_GLOBAL awards_0_award_nid String 54617
attribute NC_GLOBAL awards_0_award_number String unknown SOGLOBEC NSF ANT
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 cdm_data_type String Other
attribute NC_GLOBAL comment String SO-GLOBEC MOCNESS biovolume data
displacement volumes and dry weight calculations for MOCNESS-1 samples
NJCopley Oct-25-2005
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 2019-02-04T19:42:39Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.2372.1
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 -75.732
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/2372 (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 MOCNESS 1 meter square nets (150 and 335 micrometer mesh)
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
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 4180
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 bco, bco-dmo, biological, chemical, comments, cruiseid, data, dataset, day, day_local, depth, depth_close, depth_interval, depth_mid, depth_open, depth_w, displ, displ_vol, displ_vol_integ, dmo, dry, dry_wgt, dry_wgt_integ, dry_wgt_total, erddap, event, filt, integ, latitude, local, longitude, management, month, month_local, net, oceanography, office, preliminary, profiler, region, salinity, salinity-temperature-depth, station, station_std, std, temperature, time, time_local, total, tow, vol, vol_filt, wgt, year
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/2372/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/2372 (external link)
attribute NC_GLOBAL Northernmost_Northing double -65.147
attribute NC_GLOBAL param_mapping String {'2372': {'lat': 'master - latitude', 'lon': 'master - longitude', 'depth_close': 'flag - depth'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/2372/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 Peter H. Wiebe
attribute NC_GLOBAL people_0_person_nid String 50454
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 Nancy Copley
attribute NC_GLOBAL people_1_person_nid String 50396
attribute NC_GLOBAL people_1_role String Technician
attribute NC_GLOBAL people_1_role_type String related
attribute NC_GLOBAL people_2_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_2_affiliation_acronym String WHOI BCO-DMO
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 BCO-DMO Data Manager
attribute NC_GLOBAL people_2_role_type String related
attribute NC_GLOBAL project String SOGLOBEC
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 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 This data set is derived from displacement volume measurements and dry weight conversion calculations of plankton samples collected by a MOCNESS-1 on the RV/N.B.Palmer cruises NBP0103, NBP0104, NBP0202, NBP0204 from the Southern Ocean in austral fall/winter of 2001 and 2002.
attribute NC_GLOBAL title String Plankton biovolume data from MOCNESS tows, 2001-2002 NBPalmer cruises NBP0103, NBP0104, NBP0202, NBP0204 from the Southern Ocean (SOGLOBEC project)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -75.732
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 id, e.g. NBP0202, for RVIB Palmer cruise 0202
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 tow   String  
attribute tow bcodmo_name String tow
attribute tow description String Tow number
attribute tow long_name String Tow
variable month_local   byte  
attribute month_local _FillValue byte 127
attribute month_local actual_range byte 4, 9
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   byte  
attribute day_local _FillValue byte 127
attribute day_local actual_range byte 1, 31
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   short  
attribute time_local _FillValue short 32767
attribute time_local actual_range short 35, 2328
attribute time_local bcodmo_name String time_local
attribute time_local description String local time
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 station   String  
attribute station bcodmo_name String station
attribute station description String consecutive station number, from event log
attribute station long_name String Station
variable station_std   float  
attribute station_std _FillValue float NaN
attribute station_std actual_range float 61.18, 501.18
attribute station_std bcodmo_name String station_std
attribute station_std description String standard station number, from event log
attribute station_std long_name String Station Std
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, 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 -75.732, -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, 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   short  
attribute depth_w _FillValue short 32767
attribute depth_w actual_range short 242, 3650
attribute depth_w bcodmo_name String depth_w
attribute depth_w colorBarMaximum double 8000.0
attribute depth_w colorBarMinimum double -8000.0
attribute depth_w colorBarPalette String TopographyDepth
attribute depth_w description String depth of water at the start of tow
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 area of sampling. e.g. northeast shelf or off-shelf
attribute region long_name String Region
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 sequential MOCNESS net number
attribute net long_name String Net
variable depth_open   short  
attribute depth_open _FillValue short 32767
attribute depth_open actual_range short 20, 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 10.0, 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 sampled by net
attribute depth_mid long_name String Depth
attribute depth_mid standard_name String depth
attribute depth_mid units String meters
variable depth_interval   short  
attribute depth_interval _FillValue short 32767
attribute depth_interval actual_range short 10, 395
attribute depth_interval bcodmo_name String depth_interval
attribute depth_interval colorBarMaximum double 8000.0
attribute depth_interval colorBarMinimum double -8000.0
attribute depth_interval colorBarPalette String TopographyDepth
attribute depth_interval description String depth interval of strata sampled by net; water column thickness or layer
attribute depth_interval long_name String Depth
attribute depth_interval standard_name String depth
attribute depth_interval 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 filtered
attribute vol_filt long_name String Vol Filt
attribute vol_filt units String m3
variable displ_vol   float  
attribute displ_vol _FillValue float NaN
attribute displ_vol actual_range float 0.1, 492.0
attribute displ_vol bcodmo_name String disp_vol
attribute displ_vol description String displacement volume (biovolume)1
attribute displ_vol long_name String Displ Vol
attribute displ_vol units String cm3/100m3
variable displ_vol_integ   float  
attribute displ_vol_integ _FillValue float NaN
attribute displ_vol_integ actual_range float 0.0604, 103.3158
attribute displ_vol_integ bcodmo_name String disp_vol_integ
attribute displ_vol_integ description String integrated displacement volume for a single net sample over depth sampled by that net
attribute displ_vol_integ long_name String Displ Vol Integ
attribute displ_vol_integ units String cm3/m2
variable dry_wgt   float  
attribute dry_wgt _FillValue float NaN
attribute dry_wgt actual_range float 0.7, 3558.7
attribute dry_wgt bcodmo_name String dry_wgt
attribute dry_wgt description String dry weight2
attribute dry_wgt long_name String DRY WGT
attribute dry_wgt units String mg/m3
variable dry_wgt_integ   float  
attribute dry_wgt_integ _FillValue float NaN
attribute dry_wgt_integ actual_range float 45.0, 74733.0
attribute dry_wgt_integ bcodmo_name String dry_wgt_integ
attribute dry_wgt_integ description String integrated dry weight for a single net sample over depth sampled by that net
attribute dry_wgt_integ long_name String Dry Wgt Integ
attribute dry_wgt_integ units String mg/m2
variable dry_wgt_total   int  
attribute dry_wgt_total _FillValue int 2147483647
attribute dry_wgt_total actual_range int 6177, 166424
attribute dry_wgt_total bcodmo_name String dry_wgt_total
attribute dry_wgt_total description String total dry weight for the entire sampled water column
attribute dry_wgt_total long_name String Dry Wgt Total
attribute dry_wgt_total units String mg/m2
variable comments   String  
attribute comments bcodmo_name String comment
attribute comments description String clarification of data
attribute comments long_name String Comments

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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