Bluhm_etal_HLY0502_macrofauna_CanadaBasin2005

Metadata:

• Identification_Information
• Entity_and_Attribute_Information
• Metadata_Reference_Information
• Distribution_Information

Identification_Information:

Citation:

Citation_Information:

Originator:

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

Title: Bluhm_etal_HLY0502_macrofauna_CanadaBasin2005

Online_Linkage: pacmars.eol.ucar.edu

Description:

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.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20050628

Ending_Date: 20050725

Currentness_Reference: Unknown

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -155

East_Bounding_Coordinate: -161

North_Bounding_Coordinate: 76

South_Bounding_Coordinate: 72

Keywords:

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Categories

Theme_Keyword: biota

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: Biosphere

Theme_Keyword: Benthic Habitat

Theme_Keyword: Biology

Theme_Keyword: Aquatic Ecosystems

Theme_Keyword: Arctic

Theme_Keyword: Oceanography

Theme_Keyword: Ship

Theme_Keyword: Biota

Theme_Keyword: benthic sampling

Theme_Keyword: biota

Access_Constraints: None

Use_Constraints: None

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: HLY0502_Macrofauna_Bluhm_etal

Attribute:

Attribute_Label: FID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

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Sequential unique whole numbers that are automatically generated.

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Attribute_Label: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: CruiseID

Attribute:

Attribute_Label: StationNum

Attribute:

Attribute_Label: StationNme

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Attribute_Label: DataDate

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Attribute_Label: DataYear

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Attribute_Label: Latitude

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Attribute:

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Attribute_Label: samplesize

Attribute:

Attribute_Label: samplsznum

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Attribute_Label: spec_epith

Attribute:

Attribute_Label: coll_meth

Attribute:

Attribute_Label: Platform

Attribute:

Attribute_Label: Sievesize

Metadata_Reference_Information:

Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: National Center for Atmospheric Research

Contact_Person: Earth Observing Laboratory

Contact_Address:

Address_Type: mailing and physical

Address: 3450 Mitchell Lane

City: Boulder

State_or_Province: CO

Postal_Code: 80301

Country: USA

Contact_Voice_Telephone: 303-497-8154

Contact_Electronic_Mail_Address: codiac@ucar.edu

Contact_Electronic_Mail_Address: stott@ucar.edu