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Dataset Title:  Blue mussel (Mytilus edulis) gonad index data from mussel collections in
coastal eastern Maine between 2014 and 2016 (MuLTI-2 project)
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Institution:  BCO-DMO   (Dataset ID: bcodmo_dataset_658752)
Information:  Summary ? | License ? | ISO 19115 | Metadata | Background (external link) | Files | Make a graph
 
Variable ?   Optional
Constraint #1 ?
Optional
Constraint #2 ?
   Minimum ?
 
   Maximum ?
 
 Station_Code (unitless) ?          "CBC_LBC"    "WST_DEI"
 Year (unitless) ?          2014    2016
 Sampling_Event (unitless) ?          "MuLTI-2_GI_2014_01"    "MuLTI-2_GI_2016_08"
 Sample_Date (unitless) ?          "4/13/16"    "8/7/14"
 Shell_Length (millimeters (mm)) ?          35.0    91.8
 Gonad_Weight (grams) ?          0.01    6.9
 Somatic_Weight (grams) ?          0.26    15.94
 GI (dimensionless) ?          0.00749064    0.67647059
 latitude (degrees_north) ?          44.45134    44.825311
  < slider >
 longitude (degrees_east) ?          -68.344405    -66.986325
  < slider >
 
Server-side Functions ?
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? ("Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.")

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  Station_Code {
    String bcodmo_name "station";
    String description "Station code";
    String long_name "Station Code";
    String units "unitless";
  }
  Year {
    Int16 _FillValue 32767;
    Int16 actual_range 2014, 2016;
    String bcodmo_name "year";
    String description "Year of sample";
    String long_name "Year";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/YEARXXXX/";
    String units "unitless";
  }
  Sampling_Event {
    String bcodmo_name "event";
    String description "Identifier of sampling event";
    String long_name "Sampling Event";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/EVTAGFL/";
    String units "unitless";
  }
  Sample_Date {
    String bcodmo_name "date";
    String description "Date sample was taken";
    String long_name "Sample Date";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/";
    String units "unitless";
  }
  Shell_Length {
    Float32 _FillValue NaN;
    Float32 actual_range 35.0, 91.8;
    String bcodmo_name "length";
    String description "Shell length measurement (0.1 mm resolution)";
    String long_name "Shell Length";
    String units "millimeters (mm)";
  }
  Gonad_Weight {
    Float32 _FillValue NaN;
    Float32 actual_range 0.01, 6.9;
    String bcodmo_name "weight";
    String description "Gonad soft tissue weight";
    String long_name "Gonad Weight";
    String units "grams";
  }
  Somatic_Weight {
    Float32 _FillValue NaN;
    Float32 actual_range 0.26, 15.94;
    String bcodmo_name "weight";
    String description "Somatic soft tissue weight";
    String long_name "Somatic Weight";
    String units "grams";
  }
  GI {
    Float64 _FillValue NaN;
    Float64 actual_range 0.00749064, 0.67647059;
    String bcodmo_name "unknown";
    String description "Gonad index; Proportion of soft tissue weight attributable to gonad soft tissue: GI = gonad_weight/(somatic_weight + gonad_weight)";
    String long_name "GI";
    String units "dimensionless";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 _FillValue NaN;
    Float64 actual_range 44.45134, 44.825311;
    String axis "Y";
    String bcodmo_name "latitude";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String description "Latitude";
    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 -68.344405, -66.986325;
    String axis "X";
    String bcodmo_name "longitude";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String description "Longitude; west is negative";
    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";
  }
 }
  NC_GLOBAL {
    String access_formats ".htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson";
    String acquisition_description 
"15-25 individual blue mussels (Mytilus edulis) were randomly sampled at each
of the major mussel beds (stations) along the eastern Maine coast from
Frenchman Bay to the Canadian border. Sampling reflected the existing size
frequency distribution of mussels within each bed, but was truncated at a
minimum shell length of 25 mm to ensure mussels were of reproductive size. For
each individual mussel, sample processing consisted of measuring the shell
length (0.1 mm resolution), and then dissecting out the gonad and somatic soft
tissue separately. Gonad and somatic soft tissues were weighed separately to
0.01 g resolution.  The gonad index of each individual mussel was calculated
from the two measured weights (Gonad Soft Tissue Weight, Somatic Soft Tissue
Weight).";
    String awards_0_award_nid "527111";
    String awards_0_award_number "OCE-1333755";
    String awards_0_data_url "http://nsf.gov/awardsearch/showAward?AWD_ID=1333755";
    String awards_0_funder_name "NSF Division of Ocean Sciences";
    String awards_0_funding_acronym "NSF OCE";
    String awards_0_funding_source_nid "355";
    String awards_0_program_manager "David L. Garrison";
    String awards_0_program_manager_nid "50534";
    String cdm_data_type "Other";
    String comment 
"MuLTI-2 Gonad Index (GI) data 
    PI: P. Yund 
    data version: 2017-11-30";
    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 "2016-09-15T19:01:36Z";
    String date_modified "2020-01-03T19:33:21Z";
    String defaultDataQuery "&amp;time&lt;now";
    String doi "10.1575/1912/bco-dmo.658752.1";
    Float64 Easternmost_Easting -66.986325;
    Float64 geospatial_lat_max 44.825311;
    Float64 geospatial_lat_min 44.45134;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -66.986325;
    Float64 geospatial_lon_min -68.344405;
    String geospatial_lon_units "degrees_east";
    String history 
"2020-08-12T18:46:20Z (local files)
2020-08-12T18:46:20Z https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_658752.html";
    String infoUrl "https://www.bco-dmo.org/dataset/658752";
    String institution "BCO-DMO";
    String keywords "bco, bco-dmo, biological, chemical, code, data, dataset, date, dmo, erddap, event, gonad, Gonad_Weight, latitude, length, longitude, management, oceanography, office, preliminary, sample, Sample_Date, sampling, Sampling_Event, shell, Shell_Length, somatic, Somatic_Weight, station, Station_Code, weight, year";
    String license "https://www.bco-dmo.org/dataset/658752/license";
    String metadata_source "https://www.bco-dmo.org/api/dataset/658752";
    Float64 Northernmost_Northing 44.825311;
    String param_mapping "{'658752': {'Latitude': 'master - latitude', 'Longitude': 'master - longitude'}}";
    String parameter_source "https://www.bco-dmo.org/mapserver/dataset/658752/parameters";
    String people_0_affiliation "Downeast Institute for Applied Marine Research and Education";
    String people_0_affiliation_acronym "DEI";
    String people_0_person_name "Dr Philip O. Yund";
    String people_0_person_nid "51154";
    String people_0_role "Principal Investigator";
    String people_0_role_type "originator";
    String people_1_affiliation "Downeast Institute for Applied Marine Research and Education";
    String people_1_affiliation_acronym "DEI";
    String people_1_person_name "Dr Philip O. Yund";
    String people_1_person_nid "51154";
    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 "Amber York";
    String people_2_person_nid "643627";
    String people_2_role "BCO-DMO Data Manager";
    String people_2_role_type "related";
    String project "MuLTI-2";
    String projects_0_acronym "MuLTI-2";
    String projects_0_description 
"Acronym \"MuLTI-2\" (Mussel Larval Transport Initiative-2)
Extracted from the NSF award abstract:
Existing larval transport models focus mainly on along-shelf transport and have done little to explicitly incorporate the effects of cross-shelf mixing and transport processes. Yet cross-shelf transits (both outgoing and incoming legs) are critical components of the dispersal paths of coastal invertebrates. This project will explore the role of cross-shelf mixing in the connectivity of blue mussel populations in eastern Maine. Previous work has shown that the Eastern Maine Coastal Current (EMCC) begins to diverge from shore southwest of the Grand Manan Channel and creates a gradient in cross-shelf mixing and larval transport, with cross-shelf mixing being more common on the northeastern end, episodic in the transitional middle area, and then becoming rare in the southwestern half of the region of the Gulf of Maine. As a result, the investigators predict that northeastern populations of mussels are seeded mostly from up-stream sources, while a significant component of self-seeding (local retention) exists in southwestern populations. Larvae settling in the intervening bays are expected to be derived from a mixture of local and up-stream sources. Using a combined empirical and theoretical approach hydrographic, current profile, and larval vertical migration data will be collected and used to develop and validate a high-resolution coastal circulation model coupled to a model of larval behavior. The investigators will model simulations in different years using the empirical data from mussel reproductive output and spawning times. Connectivity predicted from this model will be then tested against independent empirical estimates of connectivity based on trace element fingerprinting for larvae which can be connected to specific natal habitats. Regions of agreement and discrepancy in the model will be identified to guide additional data collection and model refinement. This iterative process will ensure an understanding of both larval transport patterns and processes, and provide estimates of inter-annual variability in connectivity for blue mussel populations in the Gulf of Maine.";
    String projects_0_end_date "2017-08";
    String projects_0_geolocation "Gulf of Maine: Frenchmen Bay (44 28.239 N -68 15.927 W) to Machais Bay (44 39.350 N -67 21.320 W)";
    String projects_0_name "An integrated theoretical and empirical approach to across-shelf mixing and connectivity of mussel populations";
    String projects_0_project_nid "527082";
    String projects_0_start_date "2013-09";
    String publisher_name "Biological and Chemical Oceanographic Data Management Office (BCO-DMO)";
    String publisher_type "institution";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 44.45134;
    String standard_name_vocabulary "CF Standard Name Table v55";
    String summary "Blue mussel (Mytilus edulis) gonad index data from mussel collections in coastal eastern Maine between 2014 and 2016.";
    String title "Blue mussel (Mytilus edulis) gonad index data from mussel collections in coastal eastern Maine between 2014 and 2016 (MuLTI-2 project)";
    String version "1";
    Float64 Westernmost_Easting -68.344405;
    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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