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Title Sum-
Institution Dataset ID
   set  data   graph     files  public Descriptive data from Isaacs-Kidd midwater trawls (IKMT) from R/V New Horizon cruise NH1106
in the Guaymas Basin in 2011 (Jumbo Squid Physiology project)
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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 Tows with a 2m x 2m Isaacs-Kidd Midwater trawl (IKMT), 7m in length, with a
1mm mesh were conducted periodically throughout the cruise. The net was fitted
with a Simrad PI depth sensor that provides net depth information in real time
acoustically. Trawls were targeted to depths of interest based on acoustic
sampling with the goal of achieving 20 minutes of towing time at the target
depth at a target speed of 4 knots. Samples were preserved in 5% buffered
formalin in seawater and are archived in the biocuration facility at Oregon
State University.
attribute NC_GLOBAL awards_0_award_nid String 55202
attribute NC_GLOBAL awards_0_award_number String OCE-0851239
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward?AWD_ID=0851239 (external link)
attribute NC_GLOBAL awards_0_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_0_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_0_funding_source_nid String 355
attribute NC_GLOBAL awards_0_program_manager String David L. Garrison
attribute NC_GLOBAL awards_0_program_manager_nid String 50534
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String NH1106 Midwater Trawl
Guaymas Basin, Gulf of California
PI: Kelly Benoit-Bird (OSU)
Version: 08 Aug 2013
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 2013-08-08T18:56:17Z
attribute NC_GLOBAL date_modified String 2019-11-12T20:58:32Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.4010.1
attribute NC_GLOBAL Easternmost_Easting double -111.3798
attribute NC_GLOBAL geospatial_lat_max double 28.6382
attribute NC_GLOBAL geospatial_lat_min double 27.2981
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -111.3798
attribute NC_GLOBAL geospatial_lon_min double -113.0509
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL geospatial_vertical_max double 960.0
attribute NC_GLOBAL geospatial_vertical_min double 246.0
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/4010 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String IKMT
attribute NC_GLOBAL instruments_0_dataset_instrument_description String IKMT with 2-meter by 2-meter mouth opening; 7 meters in length.
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 6239
attribute NC_GLOBAL instruments_0_description String A trawl with a pentagonal mouth opening and a dihedral depressor vane as part of the mouth opening. IKMTs come in various dimensions (refer to individual dataset documentation).

The original IKMTs were 10 foot (304 cm) and 15 foot (457 cm) at the mouth. The 10 foot IKMT net was 31 feet (9.45 m) in length (Wiebe and Benfield 2003).
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L22/current/NETT0071/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String Isaacs-Kidd Midwater Trawl
attribute NC_GLOBAL instruments_0_instrument_nid String 715
attribute NC_GLOBAL instruments_0_supplied_name String Isaacs-Kidd Midwater Trawl
attribute NC_GLOBAL keywords String bco, bco-dmo, biological, catch, chemical, cod, cruise, cruise_id, data, dataset, date, day, day_or_night, depth, depth_btm_max, depth_btm_min, depths, dmo, end, erddap, filled, instrument, jars, latitude, longitude, management, max, min, night, no_jars_preserved, notes, oceanography, office, out, pcnt, pcnt_catch_preserved, portion, portion_cod_end_filled, preliminary, preserved, sog, sog_max, sog_min, start, target, target_depth_max, target_depth_min, target_depths, time, time_end, time_end_target_depth, time_start, time_start_target_depth, tow, wire, wire_out_max
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/4010/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/4010 (external link)
attribute NC_GLOBAL Northernmost_Northing double 28.6382
attribute NC_GLOBAL param_mapping String {'4010': {'lat_start': 'flag - latitude', 'lon_start': 'flag - longitude', 'depth_btm_max': 'flag - depth'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/4010/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String Oregon State University
attribute NC_GLOBAL people_0_affiliation_acronym String OSU-CEOAS
attribute NC_GLOBAL people_0_person_name String Kelly Benoit-Bird
attribute NC_GLOBAL people_0_person_nid String 51716
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 Oregon State University
attribute NC_GLOBAL people_1_affiliation_acronym String OSU-CEOAS
attribute NC_GLOBAL people_1_person_name String Chad Waluk
attribute NC_GLOBAL people_1_person_nid String 51717
attribute NC_GLOBAL people_1_role String Contact
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 Shannon Rauch
attribute NC_GLOBAL people_2_person_nid String 51498
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 Jumbo Squid Physiology
attribute NC_GLOBAL projects_0_acronym String Jumbo Squid Physiology
attribute NC_GLOBAL projects_0_description String This project concerns the ecological physiology of Dosidicus gigas, a large squid endemic to the eastern Pacific where it inhabits both open ocean and continental shelf environments. Questions to be addressed include:
1) How does utilization of the OML by D. gigas vary on both a daily and seasonal basis, and how do the vertical distributions of the OML and its associated fauna vary?
2) What behaviors of squid are impaired by conditions found in the OML, and how are impairments compensated to minimize costs of utilizing this environment? and
3) What are the physiological and biochemical processes by which squid maintain swimming activity at such remarkable levels under low oxygen conditions?
The investigators will use an integrated approach involving oceanographic, acoustic, electronic tagging, physiological and biochemical methods. D. gigas provides a trophic connection between small, midwater organisms and top vertebrate predators, and daily vertical migrations between near-surface waters and a deep, low-oxygen environment (OML) characterize normal behavior of adult squid. Electronic tagging has shown that this squid can remain active for extended periods in the cold, hypoxic conditions of the upper OML. Laboratory studies have demonstrated suppression of aerobic metabolism during a cold, hypoxic challenge, but anaerobic metabolism does not appear to account for the level of activity maintained. Utilization of the OML in the wild may permit daytime foraging on midwater organisms. Foraging also occurs near the surface at night, and Dosidicus may thus be able to feed continuously. D. gigas is present in different regions of the Guaymas Basin on a predicable year-round basis, allowing changes in squid distribution to be related to changing oceanographic features on a variety time scales.
This research is of broad interest because Dosidicus gigas has substantially extended its range over the last decade, and foraging on commercially important finfish in invaded areas off California and Chile has been reported. In addition, the OML has expanded during the last several decades, mostly vertically by shoaling, including in the Gulf of Alaska, the Southern California Bight and several productive regions of tropical oceans, and a variety of ecological impacts will almost certainly accompany changes in the OML. Moreover, D. gigas currently supports the world's largest squid fishery, and this study will provide acoustic methods for reliable biomass estimates, with implications for fisheries management in Mexico and elsewhere.
This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). This is a Collaborative Research project encompassing three NSF-OCE awards.
Background Publications:
Stewart, J.S., Field, J.C., Markaida, U., and Gilly, W.F. 2013. Behavioral ecology of jumbo squid (Dosidicus gigas) in relation to oxygen minimum zones. Deep Sea Research Part II: Topical Studies in Oceanography, 95, 197-208. doi:10.1016/j.dsr2.2012.06.005.
Gilly, W.F., Zeidberg, L.D., Booth, J.A.T, Stewart, J.S., Marshall, G., Abernathy, K., and Bell, L.E. 2012. Locomotion and behavior of Humboldt squid, Dosidicus gigas, in relation to natural hypoxia in the Gulf of California, Mexico. The Journal of Experimental Biology, 215, 3175-3190. doi: 10.1242/jeb.072538.
Related Project: Physiological limits to vertical migrations of the pelagic, jumbo squid, Dosidicus gigas in the Gulf of California
attribute NC_GLOBAL projects_0_end_date String 2013-07
attribute NC_GLOBAL projects_0_geolocation String Guaymas Basin, Gulf of California, Mexico (27 N 112 W) and Monterey Bay, CA (36 N 123 W)
attribute NC_GLOBAL projects_0_name String Hypoxia and the ecology, behavior and physiology of jumbo squid, Dosidicus gigas
attribute NC_GLOBAL projects_0_project_nid String 2279
attribute NC_GLOBAL projects_0_start_date String 2009-08
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 27.2981
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL subsetVariables String cruise_id,instrument
attribute NC_GLOBAL summary String Sampling locations, depths, times, etc. from midwater trawls performed on the NH1106 cruise in the Guaymas Basin. Samples are archived in the biocuration facility at Oregon State University.
attribute NC_GLOBAL title String Descriptive data from Isaacs-Kidd midwater trawls (IKMT) from R/V New Horizon cruise NH1106 in the Guaymas Basin in 2011 (Jumbo Squid Physiology project)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -113.0509
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable cruise_id   String  
attribute cruise_id bcodmo_name String cruise_id
attribute cruise_id description String Cruise identifier.
attribute cruise_id long_name String Cruise Id
attribute cruise_id units String text
variable instrument   String  
attribute instrument bcodmo_name String instrument
attribute instrument description String Type of sampling instrument. IKMT = Isaacs-Kidd midwater trawl.
attribute instrument long_name String Instrument
attribute instrument units String text
variable tow   byte  
attribute tow _FillValue byte 127
attribute tow actual_range byte 1, 21
attribute tow bcodmo_name String tow
attribute tow description String Tow number.
attribute tow long_name String Tow
attribute tow units String integer
variable location   String  
attribute location bcodmo_name String site_descrip
attribute location description String General location of sampling.
attribute location long_name String Location
attribute location units String text
variable latitude   double  
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 27.2981, 28.6382
attribute latitude axis String Y
attribute latitude bcodmo_name String lat_start
attribute latitude colorBarMaximum double 90.0
attribute latitude colorBarMinimum double -90.0
attribute latitude description String Latitude at start of tow.
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 source_name String lat_start
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 -113.0509, -111.3798
attribute longitude axis String X
attribute longitude bcodmo_name String lon_start
attribute longitude colorBarMaximum double 180.0
attribute longitude colorBarMinimum double -180.0
attribute longitude description String Longitude at start of tow.
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 source_name String lon_start
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
variable target_depths   String  
attribute target_depths bcodmo_name String depth
attribute target_depths description String Target depth(s).
attribute target_depths long_name String Target Depths
attribute target_depths nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/DEPH/ (external link)
attribute target_depths units String meters
variable target_depth_min   short  
attribute target_depth_min _FillValue short 32767
attribute target_depth_min actual_range short 10, 380
attribute target_depth_min bcodmo_name String depth_min
attribute target_depth_min description String Minimum of the target depth(s).
attribute target_depth_min long_name String Target Depth Min
attribute target_depth_min units String meters
variable target_depth_max   short  
attribute target_depth_max _FillValue short 32767
attribute target_depth_max actual_range short 20, 380
attribute target_depth_max bcodmo_name String depth
attribute target_depth_max description String Maximum of the target depth(s).
attribute target_depth_max long_name String Target Depth Max
attribute target_depth_max nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/DEPH/ (external link)
attribute target_depth_max units String meters
variable day_or_night   String  
attribute day_or_night bcodmo_name String time_of_day
attribute day_or_night description String Time of day (Day or Night).
attribute day_or_night long_name String Day Or Night
attribute day_or_night units String text
variable depth_btm_min   String  
attribute depth_btm_min bcodmo_name String depth_bottom
attribute depth_btm_min description String Minimum bottom depth. (Note: gt = "greater than")
attribute depth_btm_min long_name String Depth
attribute depth_btm_min standard_name String depth
attribute depth_btm_min 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 246.0, 960.0
attribute depth axis String Z
attribute depth bcodmo_name String depth_bottom
attribute depth description String Maximum bottom depth. (Note: gt = "greater than")
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 date_start   String  
attribute date_start bcodmo_name String date_begin
attribute date_start description String Date when the net entered the water (GMT) in mm/dd/YYYY format.
attribute date_start long_name String Date Start
attribute date_start source_name String date_start
attribute date_start time_precision String 1970-01-01
attribute date_start units String unitless
variable time_start   String  
attribute time_start bcodmo_name String time_start
attribute time_start description String Time when the net entered the water (UTC).
attribute time_start long_name String Time Start
attribute time_start units String HH:MM
variable time_end   String  
attribute time_end bcodmo_name String time_end
attribute time_end description String Time when the net exited the water (UTC).
attribute time_end long_name String Time End
attribute time_end units String HH:MM
variable time_start_target_depth   String  
attribute time_start_target_depth bcodmo_name String time_begin
attribute time_start_target_depth description String Start time at target depth (UTC).
attribute time_start_target_depth long_name String Time Start Target Depth
attribute time_start_target_depth units String HH:MM
variable time_end_target_depth   String  
attribute time_end_target_depth bcodmo_name String time_end
attribute time_end_target_depth description String Stop time at target depth (UTC).
attribute time_end_target_depth long_name String Time End Target Depth
attribute time_end_target_depth units String HH:MM
variable sog_min   float  
attribute sog_min _FillValue float NaN
attribute sog_min actual_range float 3.0, 4.3
attribute sog_min bcodmo_name String sog
attribute sog_min description String Minimum speed over ground.
attribute sog_min long_name String Sog Min
attribute sog_min units String knots
variable sog_max   float  
attribute sog_max _FillValue float NaN
attribute sog_max actual_range float 3.7, 4.8
attribute sog_max bcodmo_name String sog
attribute sog_max description String Maximum speed over ground.
attribute sog_max long_name String Sog Max
attribute sog_max units String knots
variable wire_out_max   short  
attribute wire_out_max _FillValue short 32767
attribute wire_out_max actual_range short 75, 1250
attribute wire_out_max bcodmo_name String wire_out
attribute wire_out_max description String Maximum wire out.
attribute wire_out_max long_name String Wire Out Max
attribute wire_out_max units String meters
variable portion_cod_end_filled   String  
attribute portion_cod_end_filled bcodmo_name String unknown
attribute portion_cod_end_filled description String Portion (fraction) of cod end filled. (Note: lt = "less than")
attribute portion_cod_end_filled long_name String Portion Cod End Filled
attribute portion_cod_end_filled units String fraction
variable pcnt_catch_preserved   float  
attribute pcnt_catch_preserved _FillValue float NaN
attribute pcnt_catch_preserved actual_range float 50.0, 100.0
attribute pcnt_catch_preserved bcodmo_name String unknown
attribute pcnt_catch_preserved description String Percent of catch preserved.
attribute pcnt_catch_preserved long_name String Pcnt Catch Preserved
attribute pcnt_catch_preserved units String percent (%)
variable no_jars_preserved   byte  
attribute no_jars_preserved _FillValue byte 127
attribute no_jars_preserved actual_range byte 1, 2
attribute no_jars_preserved bcodmo_name String unknown
attribute no_jars_preserved description String Number of jars preserved.
attribute no_jars_preserved long_name String No Jars Preserved
attribute no_jars_preserved units String integer
variable notes   String  
attribute notes bcodmo_name String comment
attribute notes description String Free-text notes about the tow.
attribute notes long_name String Notes
attribute notes units String text

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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