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     data   graph     files  public Concentration of zooplankton, in particular copepods, from hypoxic waters collected by R/V
Hugh R. Sharp cruises (HRS100524JP, HRS100819JP, HRS100920JP, HRS110525JP, HRS110719JP,
HRS110922JP) in the Chesapeake Bay from 2010-2011 (DeZoZoo project)
   ?     I   M   background (external link) RSS BCO-DMO bcodmo_dataset_564755

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 ""
attribute NC_GLOBAL awards_0_award_nid String 518410
attribute NC_GLOBAL awards_0_award_number String OCE-0961924
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward?AWD_ID=0961924 (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 Dr 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 Chesapeake Bay Copepod Data from MOCNESS Tows
J. Pierson, PI
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 2.2d 13 Jun 2019
attribute NC_GLOBAL date_created String 2015-08-26T14:31:30Z
attribute NC_GLOBAL date_modified String 2017-08-04T23:15:16Z
attribute NC_GLOBAL defaultDataQuery String &time
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.687996
attribute NC_GLOBAL Easternmost_Easting double -76.194
attribute NC_GLOBAL geospatial_lat_max double 38.541
attribute NC_GLOBAL geospatial_lat_min double 37.714
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -76.194
attribute NC_GLOBAL geospatial_lon_min double -76.423
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL geospatial_vertical_max double 15.0
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/564755 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String MOC.25
attribute NC_GLOBAL instruments_0_dataset_instrument_description String Had trouble communicating with the 1/4 m2 MOCNESS in the beginning of the first cruise.� Picked up replacement parts and were able to get it working again with an underwater unit borrowed from BESS, the manufacturer of� the MOCNESS system. (Subsequent analysis by BESS, Inc. showed that some damage to the underwater unit was caused when it was plugged into the sea cable with some charge still in the cable --� most likely from the Seabird deck unit still turned on.) -- from the Cruise Report
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 564764
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-1/4 carries nine 1/4-m2 nets usually of 64 micrometer mesh and is used to sample the larger micro-zooplankton.
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 MOCNESS.25
attribute NC_GLOBAL instruments_0_instrument_nid String 436
attribute NC_GLOBAL instruments_0_supplied_name String 1/4 Meter MOC
attribute NC_GLOBAL instruments_1_acronym String Tucker Trawl
attribute NC_GLOBAL instruments_1_dataset_instrument_description String 1 m2 Tucker Trawl fitted with 280 um mesh.
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 564765
attribute NC_GLOBAL instruments_1_description String The original Tucker Trawl, a net with�a rectangular mouth opening first built in 1951 by G.H. Tucker, was not an opening/closing system, but shortly thereafter it was modified so that it could be opened and closed.� The original had a 183 cm by 183 cm flexible rectangular mouth opening 914 cm long net with 1.8 cm stretched mesh for the first 457 cm and 1.3 cm mesh for last 457 cm. 152 cm of coarse plankton or muslin netting lined the end of the net. Tucker designed the net to collect animals associated with the deep scattering layers, principally euphausiids, siphonophores, and midwater fish. (from Wiebe and Benfield, 2003). Currently used Tucker Trawls usually have 1-m2 openings and can have a single net or multiple nets on the frame.
attribute NC_GLOBAL instruments_1_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L22/current/NETT0161/ (external link)
attribute NC_GLOBAL instruments_1_instrument_name String Tucker Trawl
attribute NC_GLOBAL instruments_1_instrument_nid String 450
attribute NC_GLOBAL instruments_1_supplied_name String Tucker Trawl
attribute NC_GLOBAL keywords String abund, abund_m2, abund_m3, active, altimetry, angle, area, area_net, available, bco, bco-dmo, best, biological, biology, chemical, count, count_subsample, cruise, cruise_informal, cruiseid, data, dataset, day, day_local, depth, dilution, dissolved, dissolved o2, dist, dmo, downwelling, downwelling_photosynthetic_photon_radiance_in_sea_water, earth, Earth Science > Oceans > Ocean Optics > Photosynthetically Active Radiation, Earth Science > Oceans > Ocean Optics > Radiance, erddap, filt, fluor, gear, genus, high, high_depth_best, informal, laboratory, lat_end, latitude, local, lon_end, longitude, low, low_depth_best, management, month, month_local, net, O2, O2_mg_L, ocean, oceanography, oceans, office, optical, optical properties, optics, oxygen, PAR, photon, photosynthetic, photosynthetically, preliminary, properties, radiance, radiation, sal, satellite, science, sea, seawater, site, size, species, splits, stage, statistics, subsample, subsample_size, taxonomy, temperature, time, time_local, tow, turbidity, vol, vol_filt, water, year, yrday, yrday_local
attribute NC_GLOBAL keywords_vocabulary String GCMD Science Keywords
attribute NC_GLOBAL license String The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/564755 (external link)
attribute NC_GLOBAL Northernmost_Northing double 38.541
attribute NC_GLOBAL param_mapping String {'564755': {'high_depth_best': 'flag - depth', 'lat_best': 'flag - latitude', 'lon_best': 'flag - longitude'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/564755/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String University of Maryland Center for Environmental Science
attribute NC_GLOBAL people_0_affiliation_acronym String UMCES/HPL
attribute NC_GLOBAL people_0_person_name String Dr James J. Pierson
attribute NC_GLOBAL people_0_person_nid String 51109
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 BCO-DMO
attribute NC_GLOBAL people_1_person_name String Ms Dicky Allison
attribute NC_GLOBAL people_1_person_nid String 50382
attribute NC_GLOBAL people_1_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_1_role_type String related
attribute NC_GLOBAL project String Hypoxia in Marine Ecosystems: Implications for Neritic Copepods
attribute NC_GLOBAL projects_0_acronym String DeZoZoo
attribute NC_GLOBAL projects_0_description String Description from NSF award abstract:
The occurrence of low-oxygen waters, often called "dead zones" in coastal ecosystems throughout the world is increasing. Despite these increases, the pelagic food-web consequences of low-oxygen waters remain poorly understood. Laboratory research has demonstrated that hypoxic water (< 2 mg l-1) can result in mortality, reduced fitness and lower egg production of planktonic copepods, a major link in food webs supporting pelagic fish. Observations in the sea indicate that hypoxic bottom waters usually have depressed abundances of copepods compared to normoxic waters (> 2 mg l-1). The gradient of declining oxygen concentration with respect to depth (oxycline) can be a critical interface in coastal pelagic ecosystems by altering the migratory behavior and depth distribution of copepods and their spatial coherence with potential predators and prey. This project will result in a mechanistic understanding of how behavior and fitness of copepods are affected by hypoxia. The PIs will compare bottom-up and top-down controls on the ecology of copepods in Chesapeake Bay waters experiencing seasonal hypoxia and those that are normoxic.
Specific objectives of this project are to:
1) analyze changes in migratory behavior and fine-scale (meter) distribution of copepods across the oxycline over hourly and diel time scales while simultaneously examining the distribution and abundance of their food (phytoplankton and microzooplankton) and predators (fish, gelatinous zooplankton);
2) estimate effects of hypoxia on the "fitness" of copepods using a suite of measurements (length/weight ratios, feeding, egg production, and egg hatching success) to develop condition indices of copepods captured at different times and depths in hypoxic and normoxic waters; and
3) evaluate effects of hypoxia on copepod mortality by hypoxia-induced, stage-specific copepod mortality in hypoxic bottom waters and by changes in top-down control of copepods from predation by fish and gelatinous zooplankton.
Oxyclines may be a barrier to vertical migration of copepods and thus disruptive to predator avoidance behavior. Faced with increased predation risk from fish and jellyfish, copepods may seek refuge in hypoxic waters for part of the day and/or make short-term vertical excursions between hypoxic and normoxic waters. By regulating vertical migrations, copepods may increase utilization of microzooplankton prey concentrated in the oxycline. Hypoxic waters may elevate consumption of copepods by jellyfish and depress consumption by pelagic fish. This project will evaluate copepod distribution and migration behavior, individual fitness and stage-specific mortality in hypoxic and normoxic waters. It will examine food-web consequences of increased or decreased spatial coherence of copepods and their predators and prey in regions with hypoxic bottom waters and will contribute to fundamental understanding of food-web processes in eutrophic coastal ecosystems.
Project acronym "DeZoZoo" = "Dead Zone Zooplankton"
attribute NC_GLOBAL projects_0_end_date String 2015-02
attribute NC_GLOBAL projects_0_geolocation String Chesapeake Bay
attribute NC_GLOBAL projects_0_name String Hypoxia in Marine Ecosystems: Implications for Neritic Copepods
attribute NC_GLOBAL projects_0_project_nid String 518411
attribute NC_GLOBAL projects_0_project_website String http://www.planktoneer.com/research.html#HYPOX (external link)
attribute NC_GLOBAL projects_0_start_date String 2010-03
attribute NC_GLOBAL publisher_name String Ms Dicky Allison
attribute NC_GLOBAL publisher_role String BCO-DMO Data Manager(s)
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL Southernmost_Northing double 37.714
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v29
attribute NC_GLOBAL summary String These data represent a merging of electronic data collected from the MOCNESS
sensor systems and the count data from the samples collected with the net
tows. Some nets were used for zooplankton samples, while others were collected
specifically to estimate bay anchovy concentrations. (See associated dataset:[
https://www.bco-dmo.org/dataset/563428](\\http://www.bco-
dmo.org/dataset/563428\\).) These are contained on different sheets, and the
count data was merged individually.
attribute NC_GLOBAL title String Concentration of zooplankton, in particular copepods, from hypoxic waters collected by R/V Hugh R. Sharp cruises (HRS100524JP, HRS100819JP, HRS100920JP, HRS110525JP, HRS110719JP, HRS110922JP) in the Chesapeake Bay from 2010-2011 (DeZoZoo project)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -76.423
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.5-beta
variable cruiseid   String  
attribute cruiseid description String official cruise name
attribute cruiseid ioos_category String Unknown
attribute cruiseid long_name String Cruiseid
attribute cruiseid units String text
variable cruise_informal   short  
attribute cruise_informal _FillValue short 32767
attribute cruise_informal actual_range short 1001, 1103
attribute cruise_informal description String The Year and the cruise series. i.e. 1101 = the first cruise in 2011
attribute cruise_informal ioos_category String Unknown
attribute cruise_informal long_name String Cruise Informal
attribute cruise_informal units String text
variable year   short  
attribute year _FillValue short 32767
attribute year actual_range short 2010, 2011
attribute year description String year
attribute year ioos_category String Time
attribute year long_name String Year
attribute year units String time
variable month_local   byte  
attribute month_local _FillValue byte 127
attribute month_local actual_range byte 5, 9
attribute month_local description String month
attribute month_local ioos_category String Time
attribute month_local long_name String Month Local
attribute month_local units String time
variable tow   byte  
attribute tow _FillValue byte 127
attribute tow actual_range byte 1, 12
attribute tow description String MOCNESS trawl series number
attribute tow ioos_category String Unknown
attribute tow long_name String Tow
attribute tow units String text
variable day_local   byte  
attribute day_local _FillValue byte 127
attribute day_local actual_range byte 21, 31
attribute day_local description String day in local time
attribute day_local ioos_category String Time
attribute day_local long_name String Day Local
attribute day_local units String time
variable net   byte  
attribute net _FillValue byte 127
attribute net actual_range byte 1, 5
attribute net description String net number
attribute net ioos_category String Unknown
attribute net long_name String Net
attribute net units String text
variable gear   String  
attribute gear description String the sampling gear
attribute gear ioos_category String Unknown
attribute gear long_name String Gear
attribute gear units String text
variable time_local   String  
attribute time_local description String local time of day
attribute time_local ioos_category String Time
attribute time_local long_name String Time Local
attribute time_local units String HH:MM
variable latitude   double  
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 37.714, 38.541
attribute latitude axis String Y
attribute latitude colorBarMaximum double 90.0
attribute latitude colorBarMinimum double -90.0
attribute latitude description String the latitude when a MOCNESS tow starts; considered the best latitude by the PI
attribute latitude ioos_category String Location
attribute latitude long_name String Latitude
attribute latitude source_name String lat_best
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 -76.423, -76.194
attribute longitude axis String X
attribute longitude colorBarMaximum double 180.0
attribute longitude colorBarMinimum double -180.0
attribute longitude description String the longitude when a MOCNESS tow starts; considered the best longitude by the PI
attribute longitude ioos_category String Location
attribute longitude long_name String Longitude
attribute longitude source_name String lon_best
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
variable yrday_local   float  
attribute yrday_local _FillValue float NaN
attribute yrday_local actual_range float 148.273, 270.543
attribute yrday_local description String day of year in local time
attribute yrday_local ioos_category String Unknown
attribute yrday_local long_name String Yrday Local
attribute yrday_local units String time
variable vol_filt   byte  
attribute vol_filt _FillValue byte 127
attribute vol_filt actual_range byte 19, 95
attribute vol_filt description String filtration volume, i.e the volume of water flowing through the net
attribute vol_filt ioos_category String Unknown
attribute vol_filt long_name String Vol Filt
attribute vol_filt units String cubic meters
variable temp   float  
attribute temp _FillValue float NaN
attribute temp actual_range float 16.515, 29.352
attribute temp description String water temperature
attribute temp ioos_category String Temperature
attribute temp long_name String Temperature
attribute temp units String degrees centrigrade
variable sal   float  
attribute sal _FillValue float NaN
attribute sal actual_range float 5.455, 24.04
attribute sal description String water salinity
attribute sal ioos_category String Unknown
attribute sal long_name String Sal
attribute sal units String PSU
variable O2_mg_L   float  
attribute O2_mg_L _FillValue float NaN
attribute O2_mg_L actual_range float -1.58, 12.571
attribute O2_mg_L description String dissolved Oxygen
attribute O2_mg_L ioos_category String Dissolved O2
attribute O2_mg_L long_name String O2 Mg L
attribute O2_mg_L units String milligrams per liter
variable fluor   float  
attribute fluor _FillValue float NaN
attribute fluor actual_range float 0.13, 13.612
attribute fluor description String Chlorophyll a concentration from Wetlabs FLNTU
attribute fluor ioos_category String Optical Properties
attribute fluor long_name String Fluor
attribute fluor units String milligrams per cubic meter
variable turbidity   float  
attribute turbidity _FillValue float NaN
attribute turbidity actual_range float 0.0, 7.422
attribute turbidity description String turbidity measured in Nephelometric Turbidity Unites (NTU) from Wetlabs FLNTU
attribute turbidity ioos_category String Unknown
attribute turbidity long_name String Turbidity
attribute turbidity units String NTU
variable PAR   float  
attribute PAR _FillValue float NaN
attribute PAR actual_range float 0.0, 0.15437
attribute PAR colorBarMaximum double 70.0
attribute PAR colorBarMinimum double 0.0
attribute PAR description String Photosynthetically available radiation
attribute PAR ioos_category String Optical Properties
attribute PAR long_name String Downwelling Photosynthetic Photon Radiance In Sea Water
attribute PAR units String microEinsteins per square meter per second
variable lat_end   float  
attribute lat_end _FillValue float NaN
attribute lat_end actual_range float 37.714, 38.54
attribute lat_end colorBarMaximum double 90.0
attribute lat_end colorBarMinimum double -90.0
attribute lat_end description String the latitude when a MOCNESS tow ends
attribute lat_end ioos_category String Location
attribute lat_end long_name String Latitude
attribute lat_end standard_name String latitude
attribute lat_end units String decimal degrees
variable lon_end   float  
attribute lon_end _FillValue float NaN
attribute lon_end actual_range float -76.422, -76.194
attribute lon_end colorBarMaximum double 180.0
attribute lon_end colorBarMinimum double -180.0
attribute lon_end description String the longitude when a MOCNESS tow ends
attribute lon_end ioos_category String Location
attribute lon_end long_name String Longitude
attribute lon_end standard_name String longitude
attribute lon_end units String decimal degrees
variable low_depth_best   byte  
attribute low_depth_best _FillValue byte 127
attribute low_depth_best actual_range byte 3, 20
attribute low_depth_best description String the surface depth of a net trawl; considered the best depth by the PI
attribute low_depth_best ioos_category String Location
attribute low_depth_best long_name String Low Depth Best
attribute low_depth_best units String m
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, 15.0
attribute depth axis String Z
attribute depth description String the bottom depth of a net trawl; considered the best depth by the PI
attribute depth ioos_category String Location
attribute depth long_name String High Depth Best
attribute depth positive String down
attribute depth standard_name String depth
attribute depth units String m
variable angle   float  
attribute angle _FillValue float NaN
attribute angle actual_range float 33.14, 59.29
attribute angle description String MOCNESS trawl angle
attribute angle ioos_category String Unknown
attribute angle long_name String Angle
attribute angle units String degrees
variable dist   float  
attribute dist _FillValue float NaN
attribute dist actual_range float 0.0, 0.548
attribute dist description String the tow distance
attribute dist ioos_category String Unknown
attribute dist long_name String Dist
attribute dist units String kilometers
variable area_net   float  
attribute area_net _FillValue float NaN
attribute area_net actual_range float 0.36, 0.59
attribute area_net description String the net mouth opening area
attribute area_net ioos_category String Unknown
attribute area_net long_name String Area Net
attribute area_net units String meters square
variable site   String  
attribute site description String sampling station: north or south
attribute site ioos_category String Unknown
attribute site long_name String Site
attribute site units String text
variable splits   byte  
attribute splits _FillValue byte 127
attribute splits actual_range byte 0, 7
attribute splits description String the number of times the sample is split in half
attribute splits ioos_category String Unknown
attribute splits long_name String Splits
attribute splits units String number
variable dilution   short  
attribute dilution _FillValue short 32767
attribute dilution actual_range short 10, 1000
attribute dilution description String the dilution volume of a split sample
attribute dilution ioos_category String Unknown
attribute dilution long_name String Dilution
attribute dilution units String ml
variable subsample_size   short  
attribute subsample_size _FillValue short 32767
attribute subsample_size actual_range short 5, 500
attribute subsample_size description String the subsample volume from a diluted sample
attribute subsample_size ioos_category String Unknown
attribute subsample_size long_name String Subsample Size
attribute subsample_size units String ml
variable genus   String  
attribute genus description String the genus name
attribute genus ioos_category String Taxonomy
attribute genus long_name String Genus
attribute genus units String text
variable species   String  
attribute species description String the species name
attribute species ioos_category String Taxonomy
attribute species long_name String Species
attribute species units String text
variable stage   String  
attribute stage description String the copepod stages: nauplii (N1-N6); copepodite (C1-C5); adult (Female or Male)
attribute stage ioos_category String Biology
attribute stage long_name String Stage
attribute stage units String text
variable count_subsample   short  
attribute count_subsample _FillValue short 32767
attribute count_subsample actual_range short 1, 6040
attribute count_subsample colorBarMaximum double 100.0
attribute count_subsample colorBarMinimum double 0.0
attribute count_subsample description String the counted numbers in a subsample
attribute count_subsample ioos_category String Statistics
attribute count_subsample long_name String Count Subsample
attribute count_subsample units String number
variable abund_m3   int  
attribute abund_m3 _FillValue int 2147483647
attribute abund_m3 actual_range int 0, 40358
attribute abund_m3 description String number of individuals per cubic meter sampled
attribute abund_m3 ioos_category String Unknown
attribute abund_m3 long_name String Abund M3
attribute abund_m3 units String number
variable abund_m2   int  
attribute abund_m2 _FillValue int 2147483647
attribute abund_m2 actual_range int 0, 168533
attribute abund_m2 description String integrated abundance; number of individuals in a square meter
attribute abund_m2 ioos_category String Unknown
attribute abund_m2 long_name String Abund M2
attribute abund_m2 units String number

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


 
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