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Dataset Title:  Euphausiid abundance and size distribution (MOCNESS) from the ARSV Laurence M.
Gould LMG0104, LMG0203 from the Southern Ocean, 2001-2002 (SOGLOBEC project)
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Institution:  BCO-DMO   (Dataset ID: bcodmo_dataset_2366)
Range: longitude = -72.47 to -67.307°E, latitude = -69.708 to -66.0288°N, depth = 0.0 to 800.0m
Information:  Summary ? | License ? | ISO 19115 | Metadata | Background (external link) | Subset | Data Access Form | Files
 
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Things You Can Do With Your Graphs

Well, you can do anything you want with your graphs, of course. But some things you might not have considered are:

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  cruiseid {
    String bcodmo_name "cruiseid";
    String description "Cruise identifier (LMG0104, LMG0203)";
    String long_name "Cruiseid";
  }
  year {
    Int16 _FillValue 32767;
    Int16 actual_range 2001, 2002;
    String bcodmo_name "year";
    String description "Year of cruise";
    String long_name "Year";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/YEARXXXX/";
  }
  inst {
    String bcodmo_name "instrument";
    String description "Type of instrument used to collect samples: MOC1 is a MOCNESS plankton tow with a 1 meter^2 opening.";
    String long_name "Inst";
    String units "unitless";
  }
  station {
    String bcodmo_name "station";
    String description "Station number";
    String long_name "Station";
  }
  cast {
    Byte _FillValue 127;
    Byte actual_range 1, 18;
    String bcodmo_name "cast";
    String description "Net tow number";
    String long_name "Cast";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 _FillValue NaN;
    Float64 actual_range -69.708, -66.0288;
    String axis "Y";
    String bcodmo_name "latitude";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String description "Latitude at beginning of tow, negative = South";
    String ioos_category "Location";
    String long_name "Latitude";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P09/current/LATX/";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 _FillValue NaN;
    Float64 actual_range -72.47, -67.307;
    String axis "X";
    String bcodmo_name "longitude";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String description "Longitude at beginning of tow, negative = West";
    String ioos_category "Location";
    String long_name "Longitude";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P09/current/LONX/";
    String standard_name "longitude";
    String units "degrees_east";
  }
  depth_w {
    Int16 _FillValue 32767;
    Int16 actual_range 211, 3224;
    String bcodmo_name "depth_w";
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "TopographyDepth";
    String description "Depth of the water at specified station";
    String long_name "Depth";
    String standard_name "depth";
    String units "meters";
  }
  day_local {
    Byte _FillValue 127;
    Byte actual_range 1, 30;
    String bcodmo_name "day_local";
    String description "day of month, local time";
    String long_name "Day Local";
  }
  month_local {
    Byte _FillValue 127;
    Byte actual_range 4, 5;
    String bcodmo_name "month_local";
    String description "month of year, local time";
    String long_name "Month Local";
  }
  time_local {
    Int16 _FillValue 32767;
    Int16 actual_range 15, 2339;
    String bcodmo_name "time_start_local";
    String description "Time net tow began, local time, GMT = local time + 4 hrs";
    String long_name "Time Local";
    String units "HHmm";
  }
  day_gmt {
    Byte _FillValue 127;
    Byte actual_range 1, 30;
    String bcodmo_name "day_gmt";
    String description "day of month, GMT time";
    String long_name "Day Gmt";
  }
  month_gmt {
    Byte _FillValue 127;
    Byte actual_range 4, 5;
    String bcodmo_name "month_gmt";
    String description "month of year, GMT time";
    String long_name "Month Gmt";
  }
  time_gmt {
    Int16 _FillValue 32767;
    Int16 actual_range 105, 2215;
    String bcodmo_name "time_gmt";
    String description "Time net tow began, GMT time";
    String long_name "Time Gmt";
  }
  net {
    Byte _FillValue 127;
    Byte actual_range 1, 8;
    String bcodmo_name "net";
    String description "Net number (1-8)";
    String long_name "Net";
  }
  vol_filt {
    Float32 _FillValue NaN;
    Float32 actual_range 74.4, 3104.0;
    String bcodmo_name "vol_filt";
    String description "Volume of water filtered by net";
    String long_name "Vol Filt";
    String units "meter3";
  }
  depth_open {
    String bcodmo_name "depth_open";
    String description "Depth each net was opened";
    String long_name "Depth";
    String standard_name "depth";
    String units "meters";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 800.0;
    String axis "Z";
    String bcodmo_name "depth_close";
    String description "Depth each net was closed";
    String ioos_category "Location";
    String long_name "Depth";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  taxon {
    String bcodmo_name "taxon";
    String description "Scientific name of organism or common name of group";
    String long_name "Taxon";
  }
  stage {
    String bcodmo_name "stage";
    String description "Life history stage e.g.: CV = copepodite stage V, C2 = calyptopis stage 2, F2 = furcilia stage 2";
    String long_name "Stage";
  }
  samp_fraction_denom {
    Float32 _FillValue NaN;
    Float32 actual_range 1.0, 2000.0;
    String bcodmo_name "samp_fraction_denom";
    Float64 colorBarMaximum 1.0;
    Float64 colorBarMinimum 0.0;
    String description "The sample size represented as a fraction, only the denominator is reported as all samples have been reduced to 1/denominator";
    String long_name "Samp Fraction Denom";
  }
  lenbin_min {
    Float32 _FillValue NaN;
    Float32 actual_range 1.0, 60.0;
    String bcodmo_name "lenbin_min";
    String description "Minimum of length bin range";
    String long_name "Lenbin Min";
    String units "mm";
  }
  lenbin_max {
    Float32 _FillValue NaN;
    Float32 actual_range 1.4, 60.9;
    String bcodmo_name "lenbin_max";
    String description "Maximum of length bin range";
    String long_name "Lenbin Max";
    String units "mm";
  }
  length_min {
    Float32 _FillValue NaN;
    Float32 actual_range 1.25, 60.0;
    String bcodmo_name "length_min";
    String description "Minimum length of individual specimen";
    String long_name "Length Min";
    String units "mm";
  }
  length_max {
    Float32 _FillValue NaN;
    Float32 actual_range 0.99, 1749.0;
    String bcodmo_name "length_max";
    String description "Maximum length of individual specimen";
    String long_name "Length Max";
    String units "mm";
  }
  count_per_lenbin {
    Byte _FillValue 127;
    Byte actual_range 0, 104;
    String bcodmo_name "count";
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String description "the number of animals of specimens of a size range described by the length bin min and max. Only the final entry for each bin has the count for that bin. Preceeding entries show a count of zero (0).";
    String long_name "Count Per Lenbin";
    String units "integer";
  }
  abund_per_lenbin {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 93.5875;
    String bcodmo_name "abundance";
    String description "Abundance of specimens of a size range described by the length bin min and max. Only the final entry for each bin has the abundance for that bin. Preceeding entries show an abundance of zero (0).";
    String long_name "Abund Per Lenbin";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P03/current/B070/";
    String units "#/m3";
  }
  count_per_stage {
    Byte _FillValue 127;
    Byte actual_range 0, 126;
    String bcodmo_name "count";
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String description "The number of animals of specimens of a stage. Only the final entry for each stage has the count for that stage. Preceeding entries show a count of zero (0).";
    String long_name "Count Per Stage";
    String units "integer";
  }
  abund_per_stage {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 211.4385;
    String bcodmo_name "abundance";
    String description "Abundance of specimens within a stage and species. Only the final entry  for each stage has the abundance for that stage. Preceding entries show  an abundance of zero (0).";
    String long_name "Abund Per Stage";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P03/current/B070/";
    String units "#/m^3";
  }
  count_species {
    Int16 _FillValue 32767;
    Int16 actual_range 0, 199;
    String bcodmo_name "count_species";
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String description "Number of specimens within a species for the sample fraction (split) noted";
    String long_name "Count Species";
    String units "integer";
  }
  abundance_species {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 370.8839;
    String bcodmo_name "abundance";
    String description "Abundance of specimens for the species";
    String long_name "Abundance Species";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P03/current/B070/";
    String units "#/m^3";
  }
  epibionts {
    String bcodmo_name "unknown";
    String description "Comment on presence of epibionts found on the krill specimens";
    String long_name "Epibionts";
    String units "text";
  }
  comments {
    String bcodmo_name "comment";
    String description "comments, usually pertaining to the condition or stage of the specimen";
    String long_name "Comments";
  }
 }
  NC_GLOBAL {
    String access_formats ".htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson";
    String acquisition_description 
"Methods
 
Zooplankton abundance, vertical and horizontal distribution, and population
structure were assessed using a 1 m2 Multiple Opening and Closing Nets and
Environmental Sampling System (MOCNESS) with nine nets having 333 \\u00b5m 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. The
upper water column was typically sampled using nets 1 and 2 from 500 m to 200
m at 150 m depth intervals, nets 3 and 4 from 200 m to 100 m at 50 m depth
intervals, and nets 5 to 8 from 100 m to the surface at 25 m depth intervals.
Some tows were deployed down to 1000 m, and some tows were towed targeting
krill swarms at irregular depths. Approximate locations of process study
stations are shown in Fig. 1. More precise locations of the casts in Fig. 2.
 
Zooplankton samples were immediately preserved in 10% buffered formalin
solution. 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 and measured for length to the nearest 0.5 mm for larvae and to
the nearest 1.0 mm for juvenile and adults. 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 other 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 (\\\"krill\\\")
reports the abundance of each euphausiid species by life stage and size class.
The companion data object \\\"zooabund\\\" reports the counts of zooplankton per
subsample/split by taxa and life stage or size class.
 
Further methodology notes [05/07/08] from K. Daly:
 
My lab started the net sample analyses and we measured lengths of krill to
either the nearest 0.25 mm for larvae or to the nearest 0.5 mm for older
stages. As I recall, after we sent splits to the Russians to complete the
sample analyses, they decided it took too long to do individual measurements
and placed larvae into 0.5 mm length groups (3.0-3.4 mm) and the older stages
to the nearest 1.0mm. Jason took his original measurements to 0.25mm and
placed them in the 0.5 mm intervals used by the Russians. The 0.5 mm length
bins (3.0-3.4; 3.5-3.9;) should be the same for all net tows.
 
For the epibiont and comment information, the occurrence of epibionts was much
higher in 2001. This information is useful as a relative measure of percent
occurrence. I have seen these cilates before, but they are episodic.
 
The comments primarily provide information on indirect development. The larvae
were placed into a particular life history stage category, but they don't
always have the exact number of telson spines, etc., typical of that stage. I
reported this information in my 2004 DSR paper.
 
Greenwich Mean Time was local time + 4 hours.
 
[](\\\\\"http://globec.whoi.edu/images/image002kdaly.gif\\\\\")
 
Fig. 1. Approximate locations of process cruise stations in Marguerite Bay
during austral autumn 2001 and 2002.
 
[](\\\\\"http://globec.whoi.edu/images/MOC_station_map_LMG.png\\\\\")
 
Fig. 2. Locations of MOCNESS stations for LMGould-0104 (2001) and LMGould-0203
(2002) cruises. Numbers correspond to the cast number.";
    String awards_0_award_nid "54931";
    String awards_0_award_number "ANT-0196489";
    String awards_0_data_url "http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=0196489";
    String awards_0_funder_name "NSF Antarctic Sciences";
    String awards_0_funding_acronym "NSF ANT";
    String awards_0_funding_source_nid "369";
    String awards_0_program_manager "Dr Polly  A Penhale";
    String awards_0_program_manager_nid "51478";
    String cdm_data_type "Other";
    String comment 
"Euphausiid Abundance, Based on life stage andsize 
      Kendra Daly, PI 
     The size_fraction value was converted from a fraction to 
       only the denominator of the given fraction (i.e. 1/2 to 2). 
     Parameter name samp_fraction was changed to samp_fraction_denom 
       samp_fraction_denom contains a decimal value of 6.6667 representing 
       the fraction 3/20.  11/09/04 GFH 
     Krill abundance andvolume filtered data temporarily removed while being 
        recalculated.  12/05/05 mda 
     Corrected volume filtered andabundance added. 7/31/08 njc";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_email "info@bco-dmo.org";
    String creator_name "BCO-DMO";
    String creator_type "institution";
    String creator_url "https://www.bco-dmo.org/";
    String data_source "extract_data_as_tsv version 2.3  19 Dec 2019";
    String date_created "2009-11-25T17:00:24Z";
    String date_modified "2019-01-30T21:37:34Z";
    String defaultDataQuery "&time<now";
    String doi "10.1575/1912/bco-dmo.2366.1";
    Float64 Easternmost_Easting -67.307;
    Float64 geospatial_lat_max -66.0288;
    Float64 geospatial_lat_min -69.708;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -67.307;
    Float64 geospatial_lon_min -72.47;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 800.0;
    Float64 geospatial_vertical_min 0.0;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String history 
"2024-04-25T13:32:49Z (local files)
2024-04-25T13:32:49Z https://erddap.bco-dmo.org/tabledap/bcodmo_dataset_2366.das";
    String infoUrl "https://www.bco-dmo.org/dataset/2366";
    String institution "BCO-DMO";
    String instruments_0_acronym "MOC1";
    String instruments_0_dataset_instrument_description "MOCNESS 1 meter square nets (150 and 335 micrometer mesh)";
    String instruments_0_dataset_instrument_nid "4179";
    String instruments_0_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 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).";
    String instruments_0_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L22/current/NETT0097/";
    String instruments_0_instrument_name "MOCNESS1";
    String instruments_0_instrument_nid "437";
    String instruments_0_supplied_name "MOCNESS1";
    String keywords "abund, abund_per_lenbin, abund_per_stage, abundance, abundance_species, bco, bco-dmo, biological, cast, chemical, comments, count, count_per_lenbin, count_per_stage, count_species, cruiseid, data, dataset, day, day_gmt, day_local, denom, depth, depth_close, depth_open, depth_w, dmo, epibionts, erddap, filt, fraction, inst, latitude, lenbin, lenbin_max, lenbin_min, length, length_max, length_min, local, longitude, management, max, min, month, month_gmt, month_local, net, oceanography, office, per, preliminary, samp, samp_fraction_denom, species, stage, station, taxon, time, time_gmt, time_local, vol, vol_filt, year";
    String license "https://www.bco-dmo.org/dataset/2366/license";
    String metadata_source "https://www.bco-dmo.org/api/dataset/2366";
    Float64 Northernmost_Northing -66.0288;
    String param_mapping "{'2366': {'lat': 'master - latitude', 'lon': 'master - longitude', 'depth_close': 'flag - depth'}}";
    String parameter_source "https://www.bco-dmo.org/mapserver/dataset/2366/parameters";
    String people_0_affiliation "University of South Florida";
    String people_0_affiliation_acronym "USF";
    String people_0_person_name "Kendra L. Daly";
    String people_0_person_nid "50505";
    String people_0_role "Principal Investigator";
    String people_0_role_type "originator";
    String people_1_affiliation "Woods Hole Oceanographic Institution";
    String people_1_affiliation_acronym "WHOI BCO-DMO";
    String people_1_person_name "Nancy Copley";
    String people_1_person_nid "50396";
    String people_1_role "BCO-DMO Data Manager";
    String people_1_role_type "related";
    String project "SOGLOBEC";
    String projects_0_acronym "SOGLOBEC";
    String projects_0_description "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.";
    String projects_0_geolocation "Southern Ocean";
    String projects_0_name "U.S. GLOBEC Southern Ocean";
    String projects_0_project_nid "2039";
    String projects_0_project_website "http://www.ccpo.odu.edu/Research/globec_menu.html";
    String projects_0_start_date "2001-01";
    String publisher_name "Biological and Chemical Oceanographic Data Management Office (BCO-DMO)";
    String publisher_type "institution";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing -69.708;
    String standard_name_vocabulary "CF Standard Name Table v55";
    String subsetVariables "inst";
    String summary "Euphausiid abundance and size distribution (MOCNESS) from the ARSV Laurence M. Gould LMG0104, LMG0203 from the Southern Ocean, 2001-2002 during the Sothern Ocean GLOBEC project.";
    String title "Euphausiid abundance and size distribution (MOCNESS) from the ARSV Laurence M. Gould LMG0104, LMG0203 from the Southern Ocean, 2001-2002 (SOGLOBEC project)";
    String version "1";
    Float64 Westernmost_Easting -72.47;
    String xml_source "osprey2erddap.update_xml() v1.3";
  }
}

 

Using tabledap to Request Data and Graphs from Tabular Datasets

tabledap lets you request a data subset, a graph, or a map from a tabular dataset (for example, buoy data), via a specially formed URL. tabledap uses the OPeNDAP (external link) Data Access Protocol (DAP) (external link) and its selection constraints (external link).

The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.

Tabledap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/pmelTaoDySst.htmlTable?longitude,latitude,time,station,wmo_platform_code,T_25&time>=2015-05-23T12:00:00Z&time<=2015-05-31T12:00:00Z
Thus, the query is often a comma-separated list of desired variable names, followed by a collection of constraints (e.g., variable<value), each preceded by '&' (which is interpreted as "AND").

For details, see the tabledap Documentation.


 
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