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   set  data   graph     files  public Concentration of anchovies from hypoxic waters of the Chesapeake Bay collected by R/V Hugh R.
Sharp (HRS100524JP, HRS100819JP, HRS100920JP, HRS110525JP, HRS110719JP, HRS110922JP) from 2010-
2011 (DeZoZoo project)
   ?     I   M   background (external link) RSS BCO-DMO bcodmo_dataset_563428

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 These data were collected with the MOCNESS system from the ship.
attribute NC_GLOBAL awards_0_award_nid String 518409
attribute NC_GLOBAL awards_0_award_number String OCE-0961942
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward?AWD_ID=0961942 (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 Anchovy 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 2015-07-29T18:38:47Z
attribute NC_GLOBAL date_modified String 2017-08-04T23:08:18Z
attribute NC_GLOBAL defaultDataQuery String &time
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.687979
attribute NC_GLOBAL Easternmost_Easting double -76.1941
attribute NC_GLOBAL geospatial_lat_max double 38.5345
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 -76.1941
attribute NC_GLOBAL geospatial_lon_min double -76.4188
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/563428 (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 563438
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 keywords String abund, active, altimetry, angle, area, area_net, available, bco, bco-dmo, biological, biology, chemical, cruise, cruise_informal, cruiseid, data, dataset, day, day_local, depth, depth_mid, depth_relative, 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, filt2, fish, fish_abund, fish_num, fluor, identifier, informal, laboratory, lat_end, latitude, local, lon_end, longitude, management, month, month_local, net, num, ocean, oceanography, oceans, office, optical, optical properties, optics, PAR, photon, photosynthetic, photosynthetically, preliminary, properties, radiance, radiation, sal, sal_sample, sample, sample_id, satellite, science, sea, seawater, site, stage, temp_sample, temperature, time, time_local, tow, turbidity, vol, vol_filt, vol_filt2, 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/563428 (external link)
attribute NC_GLOBAL Northernmost_Northing double 38.5345
attribute NC_GLOBAL param_mapping String {'563428': {'lat_best': 'flag - latitude', 'lon_best': 'flag - longitude'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/563428/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 University of Maryland Center for Environmental Science
attribute NC_GLOBAL people_1_affiliation_acronym String UMCES/HPL
attribute NC_GLOBAL people_1_person_name String Dr Edward Houde
attribute NC_GLOBAL people_1_person_nid String 518407
attribute NC_GLOBAL people_1_role String Co-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 BCO-DMO
attribute NC_GLOBAL people_2_person_name String Ms Dicky Allison
attribute NC_GLOBAL people_2_person_nid String 50382
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 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 subsetVariables String stage
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 (see [http://www.bco-
dmo.org/dataset/564755](\\https://www.bco-dmo.org/dataset/564755\\)) , while
others were collected specifically to estimate bay anchovy concentrations.
These are contained on different sheets, and the count data was merged
individually.\u00a0 This dataset represents the bay anchovy counts and
abundance.
attribute NC_GLOBAL title String Concentration of anchovies from hypoxic waters of the Chesapeake Bay collected by R/V Hugh R. Sharp (HRS100524JP, HRS100819JP, HRS100920JP, HRS110525JP, HRS110719JP, HRS110922JP) from 2010-2011 (DeZoZoo project)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -76.4188
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 net   byte  
attribute net _FillValue byte 127
attribute net actual_range byte 2, 6
attribute net description String net number
attribute net ioos_category String Unknown
attribute net long_name String Net
attribute net units String text
variable sample_id   String  
attribute sample_id description String Cruise_Date(YYYMMDD)_Station(Net Tow number)
attribute sample_id ioos_category String Identifier
attribute sample_id long_name String Sample Id
attribute sample_id 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, 38.5345
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
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 -76.4188, -76.1941
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
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 vol_filt   byte  
attribute vol_filt _FillValue byte 127
attribute vol_filt actual_range byte 3, 98
attribute vol_filt description String filtration volume
attribute vol_filt ioos_category String Unknown
attribute vol_filt long_name String Vol Filt
attribute vol_filt units String cubic meters
variable vol_filt2   float  
attribute vol_filt2 _FillValue float NaN
attribute vol_filt2 actual_range float 30.0, 98.0
attribute vol_filt2 description String filtration volume
attribute vol_filt2 ioos_category String Unknown
attribute vol_filt2 long_name String Vol Filt2
attribute vol_filt2 units String cubic meters
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 depth_mid   float  
attribute depth_mid _FillValue float NaN
attribute depth_mid actual_range float 2.0, 14.0
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 called the 'net depth'; the mid net depth
attribute depth_mid ioos_category String Location
attribute depth_mid long_name String Depth
attribute depth_mid standard_name String depth
attribute depth_mid units String m
variable depth_relative   String  
attribute depth_relative colorBarMaximum double 8000.0
attribute depth_relative colorBarMinimum double -8000.0
attribute depth_relative colorBarPalette String TopographyDepth
attribute depth_relative description String the relative sampling depth: above = above the pycnoclines; below = below the pycnoclines
attribute depth_relative ioos_category String Location
attribute depth_relative long_name String Depth
attribute depth_relative standard_name String depth
attribute depth_relative units String text
variable fish_num   short  
attribute fish_num _FillValue short 32767
attribute fish_num actual_range short 0, 2128
attribute fish_num description String the number of bay anchovies counted
attribute fish_num ioos_category String Unknown
attribute fish_num long_name String Fish Num
attribute fish_num units String number
variable fish_abund   float  
attribute fish_abund _FillValue float NaN
attribute fish_abund actual_range float 0.0, 35.116
attribute fish_abund description String bay anchovy concentration
attribute fish_abund ioos_category String Unknown
attribute fish_abund long_name String Fish Abund
attribute fish_abund units String the number of individuals per cubic meter
variable stage   String  
attribute stage description String lifestage in the development of the bay anchovy
attribute stage ioos_category String Biology
attribute stage long_name String Stage
attribute stage 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 yrday_local   float  
attribute yrday_local _FillValue float NaN
attribute yrday_local actual_range float 148.4366, 270.5457
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 temp   float  
attribute temp _FillValue float NaN
attribute temp actual_range float 16.647, 28.4
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 5.604, 24.343
attribute sal description String water salinity; 50.000 indicates error for this channel.
attribute sal ioos_category String Unknown
attribute sal long_name String Sal
attribute sal units String PSU
variable fluor   float  
attribute fluor _FillValue float NaN
attribute fluor actual_range float 0.131, 8.363
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, 8.396
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, 0.11
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 37.7094, 38.5352
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 -76.4186, -76.1942
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 angle   float  
attribute angle _FillValue float NaN
attribute angle actual_range float 35.46, 58.21
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 0.022, 0.612
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 0.37, 0.58
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 temp_sample   float  
attribute temp_sample _FillValue float NaN
attribute temp_sample actual_range float 16.6, 28.6
attribute temp_sample description String temp_sample
attribute temp_sample ioos_category String Unknown
attribute temp_sample long_name String Temp Sample
attribute temp_sample units String unknown
variable sal_sample   float  
attribute sal_sample _FillValue float NaN
attribute sal_sample actual_range float 5.6, 24.3
attribute sal_sample description String sal_sample
attribute sal_sample ioos_category String Unknown
attribute sal_sample long_name String Sal Sample
attribute sal_sample units String unknown

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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