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Dataset Title:  Abundance and proportion of ichthyoplankton of the Northeast U.S. Shelf from
surveys conducted during the MARMAP (1977-1987) and EcoMon (1999-2008) programs.
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Institution:  BCO-DMO   (Dataset ID: bcodmo_dataset_560448)
Information:  Summary ? | License ? | ISO 19115 | Metadata | Background (external link) | Files | Make a graph
 
Variable ?   Optional
Constraint #1 ?
Optional
Constraint #2 ?
   Minimum ?
 
   Maximum ?
 
 taxa (text) ?          "Ammodytes_spp."    "Urophycis_spp."
 year (dimensionless) ?          1977    2008
 season (dimensionless) ?          1    6
 strata (dimensionless) ?          1    47
 latitude (degrees_north) ?          35.87810748    44.26110273
  < slider >
 longitude (degrees_east) ?          -75.69231598    -65.91371179
  < slider >
 area (square kilomters (km^2)) ?          923.79    15368.0
 mean_abund (mean number of adults) ?          0.0    81972.19667
 rel_proportion (percentage (%)) ?          0.0    100.0
 
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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  taxa {
    String bcodmo_name "taxon";
    String description "Species/taxonomic name.";
    String long_name "Taxa";
    String units "text";
  }
  year {
    Int16 _FillValue 32767;
    Int16 actual_range 1977, 2008;
    String bcodmo_name "year";
    String description "4 digit GMT year";
    String long_name "Year";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/YEARXXXX/";
    String units "dimensionless";
  }
  season {
    Byte _FillValue 127;
    Byte actual_range 1, 6;
    String bcodmo_name "season";
    String description "1 digit code for bimonthly sample collection period: 1=January-February; 2=March-April; 3=May-June; 4=July-August; 5=September-October; 6=November-December.";
    String long_name "Season";
    String units "dimensionless";
  }
  strata {
    Byte _FillValue 127;
    Byte actual_range 1, 47;
    String bcodmo_name "unknown";
    String description "2 digit code for EcoMon plankton strata.";
    String long_name "Strata";
    String units "dimensionless";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 _FillValue NaN;
    Float64 actual_range 35.87810748, 44.26110273;
    String axis "Y";
    String bcodmo_name "latitude";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String description "Strata latitude center in decimal degrees";
    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 -75.69231598, -65.91371179;
    String axis "X";
    String bcodmo_name "longitude";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String description "Strata longitude center in decimal degrees";
    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";
  }
  area {
    Float32 _FillValue NaN;
    Float32 actual_range 923.79, 15368.0;
    String bcodmo_name "unknown";
    String description "Strata area in square kilometers";
    String long_name "Area";
    String units "square kilomters (km^2)";
  }
  mean_abund {
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 81972.19667;
    String bcodmo_name "abundance";
    String description "Strata mean abundance (mean number of larvae under 10 m^2 sea surface)";
    String long_name "Mean Abund";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P03/current/B070/";
    String units "mean number of adults";
  }
  rel_proportion {
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 100.0;
    String bcodmo_name "relative_abund";
    String description "Strata relative proportion (% collected in a stratum for that season and year)";
    String long_name "Rel Proportion";
    String units "percentage (%)";
  }
 }
  NC_GLOBAL {
    String access_formats ".htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson";
    String acquisition_description 
"MARMAP used mainly a fixed station design covering the sample area of each
survey approximately evenly (Sibunka and Silverman 1984, 1989).\\u00a0 EcoMon
sampled the same spatial extent of the shelf as MARMAP, but used a random-
stratified design based on the NEFSC bottom trawl survey design (Azarovitz
1981). The number of plankton strata (n = 47) is lower than the bottom trawl
survey (n = 108) as the narrow inshore stratum and the offshore shelf-break
stratum of the bottom trawl survey (Azarovitz 1981) are combined in the EcoMon
plankton sampling design.\\u00a0 The area encompassed by each stratum
determined the number of samples in that stratum.\\u00a0 The number of stations
sampled during an EcoMon survey is approximately 30 % less than that of
MARMAP.\\u00a0 Samples were collected four to eight times per year (primarily:
January-February, March-April, May-June, July-August, September-October, and
November-December) for each program (Richardson et al. 2010).
 
The basic station protocols were very similar for MARMAP and EcoMon (Jossi and
Marak 1983, Ejsymont and Sherman 2000).\\u00a0 Samples were collected both day
and night using a 61-cm bongo.\\u00a0 Net tow speed was approximately 1.5
knots. Double oblique tows were a minimum of 5-mintues in duration, and fished
from the surface to within 5-m of the seabed or to a maximum depth of 200-m.
The volume filtered of all collections was measured with mechanical flowmeters
mounted across the mouth of each net. Mesh size of the net differed between
the programs, and was 505-\\u03bcm during MARMAP and 333-\\u03bcm during
EcoMon.\\u00a0 Samples were preserved in 5% formalin.
 
Processing of most samples was conducted at the Morski Instytut Rybacki in
Szczecin, Poland; the remaining samples were processed at the NEFSC or the
Atlantic Reference Center, St Andrews, Canada. Larvae were identified to the
lowest possible taxon and enumerated for each sample. Plankton tows differ
with respect to volume of water filtered and maximum tow depth. In order to
make data values comparable, these values were normalized through the use of a
standard haul factor: h = z * 10 / v, where z = maximum tow depth (in meters)
and v = volume of water filtered (in meters cubed). Taxon abundance for each
station was standardized to number under 10 \\u2022 m-2 sea surface (Morse
1989).
 
References:  
 Azarovitz TR. 1981. A brief historical review of the Woods Hole Laboratory
trawl survey time series. Canadian Special Publication of Fisheries and
Aquatic Sciences. 58:62-7.
 
Ejsymont L, Sherman K. 2000. Poland and the United States' cooperation in
fisheries ecology: a multidecadal retrospective. Bulletin Sea Fisheries
Institute Gdynia. 3(3-10).
 
Jossi JW, Marak RR. 1983. MARMAP plankton survey manual. US Department of
Commerce, NOAA Technical Memo. NMFS-F/NEC-21:258 p.
URL:\\u00a0[http://nefsc.noaa.gov/publications/tm/pdfs/tmfnec21.pdf](\\\\\"http://nefsc.noaa.gov/publications/tm/pdfs/tmfnec21.pdf\\\\\")
 
Morse W. 1989. Catchability, Growth, and Mortality of Larval Fishes. Fish Bul.
87(3):417-46.
URL:\\u00a0[http://fishbull.noaa.gov/873/morse.pdf](\\\\\"http://fishbull.noaa.gov/873/morse.pdf\\\\\")
 
Richardson DE, Hare JA, Overholtz WJ, Johnson DL. Development of long-term
larval indices for Atlantic herring (Clupea harengus) on the northeast US
continental shelf. 2010. Ices Journal of Marine Science. 67(4):617-27.
doi:10.1093/icesjms/fsp276
 
Sibunka JD, Silverman MJ. 1984. MARMAP surveys of the continental shelf from
Cape Hatteras, North Carolina to Cape Sable, Nova Scotia (1977-1983). Atlas
No. 1. Summary of operations. US Department of Commerce, NOAA Technical Memo.
NMFS-F/NEC-33:306 p.
 
Sibunka JD, Silverman MJ. 1989. MARMAP surveys of the continental shelf from
Cape Hatteras, North Carolina to Cape Sable, Nova Scotia (1984-87). Atlas No.
3. Summary of operations. US Department of Commerce, NOAA Technical Memo.
NEFC-F/NEC-68:197 p.";
    String cdm_data_type "Other";
    String comment 
"Northeast U.S. Ichthyoplankton 
  From The Northeast Fisheries Science Center (NEFSC) MARMAP and EcoMon Surveys 
 PI: Dr. Jon Hare (NOAA-NEFSC) 
 Contact: Harvey Walsh (NOAA-NEFSC) 
 Version: 16 June 2015";
    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 "2015-06-16T18:28:46Z";
    String date_modified "2020-01-14T21:24:30Z";
    String defaultDataQuery "&amp;time&lt;now";
    String doi "10.1575/1912/bco-dmo.560448.1";
    Float64 Easternmost_Easting -65.91371179;
    Float64 geospatial_lat_max 44.26110273;
    Float64 geospatial_lat_min 35.87810748;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -65.91371179;
    Float64 geospatial_lon_min -75.69231598;
    String geospatial_lon_units "degrees_east";
    String history 
"2020-10-27T17:34:36Z (local files)
2020-10-27T17:34:36Z https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_560448.html";
    String infoUrl "https://www.bco-dmo.org/dataset/560448";
    String institution "BCO-DMO";
    String instruments_0_acronym "MARMAP Bongo Net";
    String instruments_0_dataset_instrument_nid "560559";
    String instruments_0_description "A non-opening-closing descendant of the McGowan/Brown Bongo net, consisting of a pair of circular hoops (61 cm in diameter and 30 cm long) joined by a central yoke which is clamped to the towing cable.  The nets are 61 cm in diameter and have a cylindrical section 147 cm long and a conical section 153 cm long.  Mesh sizes from 0.1 to 0.5 mm have been used, but normally 0.333 mm is used.  A flowmeter is present in each hoop [Posgay and Marak (1980), Fig. 1].";
    String instruments_0_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L22/current/NETT0089/";
    String instruments_0_instrument_name "MARMAP Bongo Net";
    String instruments_0_instrument_nid "672";
    String keywords "abund, area, bco, bco-dmo, biological, chemical, data, dataset, dmo, erddap, latitude, longitude, management, mean, mean_abund, oceanography, office, preliminary, proportion, rel, rel_proportion, season, strata, taxa, year";
    String license "https://www.bco-dmo.org/dataset/560448/license";
    String metadata_source "https://www.bco-dmo.org/api/dataset/560448";
    Float64 Northernmost_Northing 44.26110273;
    String param_mapping "{'560448': {'lat': 'flag - latitude', 'lon': 'flag - longitude'}}";
    String parameter_source "https://www.bco-dmo.org/mapserver/dataset/560448/parameters";
    String people_0_affiliation "Northeast Fisheries Science Center - Narragansett";
    String people_0_affiliation_acronym "NOAA NEFSC";
    String people_0_person_name "Jonathan Hare";
    String people_0_person_nid "51164";
    String people_0_role "Principal Investigator";
    String people_0_role_type "originator";
    String people_1_affiliation "Northeast Fisheries Science Center - Narragansett";
    String people_1_affiliation_acronym "NOAA NEFSC";
    String people_1_person_name "Harvey Walsh";
    String people_1_person_nid "560345";
    String people_1_role "Contact";
    String people_1_role_type "related";
    String people_2_affiliation "Woods Hole Oceanographic Institution";
    String people_2_affiliation_acronym "WHOI BCO-DMO";
    String people_2_person_name "Shannon Rauch";
    String people_2_person_nid "51498";
    String people_2_role "BCO-DMO Data Manager";
    String people_2_role_type "related";
    String project "NEFSC Ichthyoplankton";
    String projects_0_acronym "NEFSC Ichthyoplankton";
    String projects_0_description 
"The Northeast Fisheries Science Center (NEFSC) has conducted several ichthyoplankton collection programs on the NEUS Shelf over the past forty years including the Marine Resources Monitoring, Assessment, and Prediction program (MARMAP, 1977 - 1987) and Ecosystem Monitoring (EcoMon, 1999 - present) program (Richardson et al. 2010). Both MARMAP and EcoMon were designed as multi-species plankton surveys, and sampling effort covered the entire NEUS Shelf from Cape Hatteras, North Carolina, to Cape Sable, Nova Scotia (Figure 1, Sibunka and Silverman 1984, 1989; Richardson et al. 2010).
References:
Richardson DE, Hare JA, Overholtz WJ, Johnson DL. 2010. Development of long-term larval indices for Atlantic herring (Clupea harengus) on the northeast US continental shelf. Ices Journal of Marine Science. 67(4):617-27
Sibunka JD, Silverman MJ. 1984. MARMAP surveys of the continental shelf from Cape Hatteras, North Carolina to Cape Sable, Nova Scotia (1977-1983). Atlas No. 1. Summary of operations. US Department of Commerce, NOAA Technical Memo. NMFS-F/NEC-33:306 p.
Sibunka JD, Silverman MJ. 1989. MARMAP surveys of the continental shelf from Cape Hatteras, North Carolina to Cape Sable, Nova Scotia (1984-87). Atlas No. 3. Summary of operations. US Department of Commerce, NOAA Technical Memo. NEFC-F/NEC-68:197 p.";
    String projects_0_end_date "2008-12";
    String projects_0_geolocation "Northeast U.S. Shelf Ecosystem from Cape Hatteras, North Carolina to Cape Sable, Nova Scotia";
    String projects_0_name "Northeast Fisheries Science Center Ichthyoplankton Collection";
    String projects_0_project_nid "560452";
    String projects_0_start_date "1977-01";
    String publisher_name "Biological and Chemical Oceanographic Data Management Office (BCO-DMO)";
    String publisher_type "institution";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 35.87810748;
    String standard_name_vocabulary "CF Standard Name Table v55";
    String summary "Abundance and proportion of ichthyoplankton of the Northeast U.S. Shelf. Ichthyoplankton data from several surveys conducted during the Marine Resources Monitoring, Assessment, and Prediction (MARMAP; 1977-1987) and Ecosystem Monitoring (EcoMon; 1999-2008) programs.\\r\\n\\r\\nThe Northeast Fisheries Science Center (NEFSC) has conducted several ichthyoplankton collection programs on the NEUS Shelf over the past forty years including the Marine Resources Monitoring, Assessment, and Prediction program (MARMAP, 1977 - 1987) and Ecosystem Monitoring (EcoMon, 1999 - present) program (Richardson et al. 2010). Both MARMAP and EcoMon were designed as multi-species plankton surveys, and sampling effort covered the entire NEUS Shelf from Cape Hatteras, North Carolina, to Cape Sable, Nova Scotia (Figure 1, Sibunka and Silverman 1984, 1989; Richardson et al. 2010).";
    String title "Abundance and proportion of ichthyoplankton of the Northeast U.S. Shelf from surveys conducted during the MARMAP (1977-1987) and EcoMon (1999-2008) programs.";
    String version "1";
    Float64 Westernmost_Easting -75.69231598;
    String xml_source "osprey2erddap.update_xml() v1.3";
  }
}

 

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