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Title Sum-
Institution Dataset ID
     data   graph     files  public Blue mussel (Mytilus edulis) size frequency data from surveys conducted in coastal eastern
Maine from 2014 to 2017 (MuLTI-2 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
attribute NC_GLOBAL acquisition_description String Location:\u00a0\u00a0Coastal waters of eastern Maine, from Frenchman Bay to
the Canadian border.\u00a0Locations and descriptions for station codes used in
this dataset can be found in the dataset:\u00a0[MuLTI-2 Mussel Station

Sampling and Analytical Methodology:\u00a0

Size frequencies of blue mussels (Mytilus edulis) were measured at three
random sample locations at each of the major mussel beds (stations) along the
eastern Maine coast from Frenchman Bay to the Canadian border. At each sample
location, a 30 cm x 30 cm quadrat was laid down haphazardly in a relatively
dense patch of mussels, and the entirety of the quadrat contents harvested
(byssal thread matrix and soft-sediment included). If <30 individual mussels
were in the quadrat, further samples were taken immediately adjacent to the
original quadrat until 30+ mussels had been harvested. The contents of each
sample was returned to the lab for careful sorting into 5 mm size class bins.
The number of mussels within each size class bin were enumerated and the
frequency of each size class in each sample was calculated yielding three
frequencies per size class per year per mussel population.

Size Class Frequency was calculated as the Count of Individual Mussels within
a particular size class divided by the Total Individual Mussels Sampled within
a plot.
attribute NC_GLOBAL awards_0_award_nid String 527111
attribute NC_GLOBAL awards_0_award_number String OCE-1333755
attribute NC_GLOBAL awards_0_data_url String http://nsf.gov/awardsearch/showAward?AWD_ID=1333755 (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 MuLTI-2 Mussel Size Frequency
PI: P. Yund
data version: 2017-12-28
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 2017-11-30T22:13:23Z
attribute NC_GLOBAL date_modified String 2020-01-03T19:42:46Z
attribute NC_GLOBAL defaultDataQuery String &amp;time&lt;now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.720223.1
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/720223 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL keywords String array, array-data, bco, bco-dmo, biological, chemical, class, code, comprehensive, count, data, dataset, dmo, erddap, event, freq, large, management, mussel, Mussel_Count, mussels, Mussels_Sampled, oceanography, office, plot, preliminary, replicate, Replicate_Plot, sample, Sample_Year, sampled, sampling, Sampling_Event, size, Size_Class, Size_Class_Freq, station, Station_Code, stewardship, system, year
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/720223/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/720223 (external link)
attribute NC_GLOBAL param_mapping String {'720223': {}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/720223/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String Downeast Institute for Applied Marine Research and Education
attribute NC_GLOBAL people_0_affiliation_acronym String DEI
attribute NC_GLOBAL people_0_person_name String Dr Philip O. Yund
attribute NC_GLOBAL people_0_person_nid String 51154
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 Downeast Institute for Applied Marine Research and Education
attribute NC_GLOBAL people_1_affiliation_acronym String DEI
attribute NC_GLOBAL people_1_person_name String Dr Philip O. Yund
attribute NC_GLOBAL people_1_person_nid String 51154
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 Amber York
attribute NC_GLOBAL people_2_person_nid String 643627
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 MuLTI-2
attribute NC_GLOBAL projects_0_acronym String MuLTI-2
attribute NC_GLOBAL projects_0_description String 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.
attribute NC_GLOBAL projects_0_end_date String 2017-08
attribute NC_GLOBAL projects_0_geolocation String Gulf of Maine: Frenchmen Bay (44 28.239 N -68 15.927 W) to Machais Bay (44 39.350 N -67 21.320 W)
attribute NC_GLOBAL projects_0_name String An integrated theoretical and empirical approach to across-shelf mixing and connectivity of mussel populations
attribute NC_GLOBAL projects_0_project_nid String 527082
attribute NC_GLOBAL projects_0_start_date String 2013-09
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 standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String Blue mussel (Mytilus edulis) size frequency data from surveys conducted in coastal eastern Maine from 2014 to 2017.
attribute NC_GLOBAL title String Blue mussel (Mytilus edulis) size frequency data from surveys conducted in coastal eastern Maine from 2014 to 2017 (MuLTI-2 project)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable Sampling_Event   String  
attribute Sampling_Event bcodmo_name String event
attribute Sampling_Event description String Identifier of sampling event
attribute Sampling_Event long_name String Sampling Event
attribute Sampling_Event nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/EVTAGFL/ (external link)
attribute Sampling_Event units String unitless
variable Station_Code   String  
attribute Station_Code bcodmo_name String station
attribute Station_Code description String Identifier of sampling station
attribute Station_Code long_name String Station Code
attribute Station_Code units String unitless
variable Sample_Year   short  
attribute Sample_Year _FillValue short 32767
attribute Sample_Year actual_range short 2014, 2017
attribute Sample_Year bcodmo_name String year
attribute Sample_Year description String Year of sampling event
attribute Sample_Year long_name String Sample Year
attribute Sample_Year nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/YEARXXXX/ (external link)
attribute Sample_Year units String unitless
variable Replicate_Plot   byte  
attribute Replicate_Plot _FillValue byte 127
attribute Replicate_Plot actual_range byte 1, 5
attribute Replicate_Plot bcodmo_name String replicate
attribute Replicate_Plot description String Replicate plot number
attribute Replicate_Plot long_name String Replicate Plot
attribute Replicate_Plot units String unitless
variable Size_Class   String  
attribute Size_Class bcodmo_name String length
attribute Size_Class description String Blue mussel (Mytilus edulis) size class. Size class is described as a mm size range (e.g. "10 - 15"). Mussels were counted if the length was >= the minimum bounding size and < the maximum bounding size
attribute Size_Class long_name String Size Class
attribute Size_Class units String millimeters (mm)
variable Mussel_Count   double  
attribute Mussel_Count _FillValue double NaN
attribute Mussel_Count actual_range double 0.0, 3516.0
attribute Mussel_Count bcodmo_name String count
attribute Mussel_Count colorBarMaximum double 100.0
attribute Mussel_Count colorBarMinimum double 0.0
attribute Mussel_Count description String Number of Blue mussels (Mytilus edulis) in size class within plot
attribute Mussel_Count long_name String Mussel Count
attribute Mussel_Count units String per individual
variable Mussels_Sampled   double  
attribute Mussels_Sampled _FillValue double NaN
attribute Mussels_Sampled actual_range double 10.0, 7680.0
attribute Mussels_Sampled bcodmo_name String count
attribute Mussels_Sampled description String Total mussels sampled within a plot
attribute Mussels_Sampled long_name String Mussels Sampled
attribute Mussels_Sampled units String per individual
variable Size_Class_Freq   double  
attribute Size_Class_Freq _FillValue double NaN
attribute Size_Class_Freq actual_range double 0.0, 0.575502742
attribute Size_Class_Freq bcodmo_name String unknown
attribute Size_Class_Freq description String Size class frequency. The count of individual mussels within a particular size class divided by the total individual mussels sampled within a plot (Mussel_Count/Mussels_Sampled)
attribute Size_Class_Freq long_name String Size Class Freq
attribute Size_Class_Freq units String dimensionless

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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