Bluhm_etal_HLY0502_macrofauna_CanadaBasin2005

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Title: Bluhm_etal_HLY0502_macrofauna_CanadaBasin2005
Abstract:
Soft bottom metazoan infauna (larger than 250 micrometer) was collected with 33 box cores at 11 stations ranging from 817m to 3961 m water depth in the high Arctic Canada Basin from 28 June to 25 July 2005. Total infauna abundance ranged from 0.6 to 50 individuals per 0.06 squaremeter (89-2722 individuals per square meter) and total biomass ranged from 0.2-1.6 g wet weight per 0.06 square meter (less than 0.1-26.1 g wet weight per square meter). Infauna taxon number per station was between 8 and 55. Abundance, biomass, taxon number and diversity indices of infauna declined significantly with water depth. Polychaetes, crustaceans and bivalves dominated the infaunal densities, biomass and species numbers. A total of 99 infauna taxa were identified, including at least three new species of polychaetes. Multivariate analysis indicated that station groups “Chukchi slope”, “Canada Basin abyss” and “Chukchi Cap” were moderately, but significantly, different in the infauna samples, but could not be similarly distinguished as such in the epifauna photographs. This data set contains the raw counts for each box core replicate sample, mostly per 0.06 m2 (20x30 cm) for replicates 1 and 2, and per 0.03 m2 for replicate 3. The second half of replicate three was used to sample for measurements of grain size, sediment organic carbon etc.. Those environmental data as well as mean station totals of abundance and biomass are in the related publication: MacDonald IR, Bluhm BA (shared 1st authorship), Iken K, Gagaev S, Strong S (2010) Benthic macrofaunal and megafaunal assemblages in the Arctic deep-sea Canada Basin. Deep-Sea Research II 57:136-152. Species identifications were primarily conducted by the taxonomists listed in the data file.
  1. How should this data set be cited?

    Bodil A. Bluhm, University of Alaska Fairbanks, Research Associate Professor, Bluhm_etal_HLY0502_macrofauna_CanadaBasin2005.

    Online Links:

    • pacmars.eol.ucar.edu

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -155
    East_Bounding_Coordinate: -161
    North_Bounding_Coordinate: 76
    South_Bounding_Coordinate: 72

  3. What does it look like?

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

    Beginning_Date: 28-Jun-2005
    Ending_Date: 25-Jul-2005
    Currentness_Reference: Unknown

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  6. How does the data set represent geographic features?

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

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

  7. How does the data set describe geographic features?

    HLY0502_Macrofauna_Bluhm_etal

    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

    sci_name

    basis_rec

    kingdom

    phylum

    class

    order_

    family

    genus

    species

    ident_by

    collector

    cont_ocean

    indiv_cnt

    samplesize

    samplsznum

    sampszunit

    spec_epith

    coll_meth

    Platform

    Sievesize


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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

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Metadata author:
Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)


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