Epifauna PacMARS

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Frequently anticipated questions:


What does this data set describe?

Title: Epifauna PacMARS
Abstract:
This data set is a compilation of close to 1000 epifaunal invertebrate sampling stations from over 20 research cruises to the northern Bering Sea (US side), Chukchi Sea (Russian and US sides) and Beaufort Sea (US side) from 1972 to 2012. The vast majority of stations were trawl hauls with a handful of photographic sampling stations. Trawl hauls were conducted with a range of different nets including various otter trawls including the 83-112 Eastern Otter trawl, and a plumb-staff beam trawl with varying mesh sizes ranging from 4 mm in the cod end and 7 mm in the body of the net to xxx. Trawl duration ranged from 1-30 minutes and trawl speed ranged from xx – xx knots. Where available, variables compiled include cruise and station names, locations with water depth, haul and net information, contact information of data holder, as well as total abundance, biomass and taxon richness of epifaunal invertebrates. The latter is biased by varying levels of taxonomic resolution in the source data. The majority of data sets are incomplete, either because the data have not yet been released as is the case for many recent cruises, or because hauls were not quantitative as is the case for some historic data sets. Data on fishes from the same hauls are not reported here. Column headers are explained in the readme file.Changes made to the original data sets as provided by the project contacts or in the data source include, where possible: standardization of abundance to individuals per 1000 square meters; standardization of biomass to kilograms wet weight per 1000 square meters; subtraction of obvious infaunal taxa, eggs and fragments from the taxon count.The research projects or cruise names of the data sets compiled are listed here by year. Also given is the source where Bodil Bluhm (babluhm@alaska.edu) University of Alaska Fairbanks) obtained the data and the archive where fully taxonomically resolved data sets are stored, if anywhere. Where only hard copies where available, data where digitized.WEBSEC 1972, paper copy from Andrew Carey via Susan Schonberg, Bluhm digitized and archived at EOL <http://pacmars.eol.ucar.edu> with metadataFN762 1976, from Howard Feder and Arny Blanchard, archived at www.arcodiv.orgNorton Sound Red King Crab survey 1976-2006, available per request from North Pacific Research Board www.nprb.orgUSCGC Glacier 1977, Bluhm digitized presence/absence from pdf of paper report, to be archived at EOL <http://pacmars.eol.ucar.edu> with metadataRUSALCA 2004, Bluhm/Iken are data holders, archived at www.aoos.org(to go public soon)Hidden Ocean 2005, McDonald/Bluhm are data holders, macrofauna data archived at EOL <http://pacmars.eol.ucar.edu> with metadata, epifauna data not yet archivedHealy 2006-01, Lovvorn, not yet archived, ongoing graduate student thesis projectOshoru Maru 2007, Bluhm /Iken are data holders, archived at www.aoos.org(to go public soon)Oscar Dyson 2007, Bluhm/Iken are data holders, archived at www.aoos.org(to go public soon)Ocean Explorer 2008, Bureau of Ocean Energy Management / Alaska Fisheries Science Center (Logerwell, Rand) / Bluhm are data holders, archived at NOAA/RACE and BOEMOshoru Maru 2008, Bluhm/Iken are data holders, total abundance and biomass only as archived hereCSESP 2009, 2010, Blanchard, archived at www.aoos.org(to go public soon)COMIDA-CAB 2009, 2010, Konar, archived at NODC <http://www.nodc.noaa.gov/cgi-bin/OAS/prd/accession/95566RUSALCA> 2009, 2012, locations only from Bluhm/Iken, analysis in progress as part of graduate thesis, to be archived at www.aoos.orgBeauFish 2011, locations only from cruise log, Konar/Ravelo are data holders, analysis in progress as part of graduate thesis, final report in progress with Coastal Marine Institute, to be available from BOEMCOMIDA Hanna Shoal 2012, locations only from Konar, analysis in progress as part of graduate thesisCSESP 2012, locations only from Blanchard, analysis in progressArctic Eis 2012, locations only from Lauth / AFSC, analysis in progressTransboundary 2012, locations only from Norcross, analysis in progress
  1. How should this data set be cited?

    Bodil Bluhm, University of Alaska Fairbanks, Research Associate Professor, Epifauna PacMARS.

    Online Links:

    • pacmars.eol.ucar.edu

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: 179.48
    East_Bounding_Coordinate: 139.83
    North_Bounding_Coordinate: 76.43
    South_Bounding_Coordinate: 61.39

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: vector digital data

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • Entity point (949)

    2. What coordinate system is used to represent geographic features?

  7. How does the data set describe geographic features?

    Epifauna060413_BBluhm

    FID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Shape
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    CruiseID

    StationNum

    StationNme

    DataDate

    DataYear

    DataTime

    TimeZone

    UTCOffset

    Latitude

    Longitude

    Depth

    Gear

    GearSize

    MeshNet

    MeshCodEnd

    TrawlTime

    HeadRole

    FootRope

    NetWidth

    AreaFished

    DistFished

    TowSpeed

    Contact

    Affiliatio

    Abundance

    UnitAbun

    Abund1000

    Biomass

    UnitBiom

    BioKg1000

    TaxonNum

    TaxonNum_E

    Comments


Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

  3. To whom should users address questions about the data?


Why was the data set created?


How was the data set created?

  1. From what previous works were the data drawn?

  2. How were the data generated, processed, and modified?

  3. What similar or related data should the user be aware of?


How reliable are the data; what problems remain in the data set?


How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: None
Use_Constraints: None

  1. Who distributes the data set? (Distributor 1 of 1)

    National Center for Atmospheric Research
    Attn: Earth Observing Laboratory
    3450 Mitchell Lane
    Boulder, CO 80301
    USA

    303-497-8154 (voice)
    codiac@ucar.edu

  2. What's the catalog number I need to order this data set?

  3. What legal disclaimers am I supposed to read?

  4. How can I download or order the data?


Who wrote the metadata?

Dates:
Last modified: 05-Jun-2013
Metadata author:
Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)


This page is <http://pacmars.eol.ucar.edu/docs/metadata/Epifauna060413_BBluhm.faq.html>
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