Macro and megabenthic communities in the High Arctic Basin: Initial FindingsEntry ID: UAF_macromegabenthicommunities
Abstract: This dataset investigates the macro- and megabenthos of the Canada Basin,
which is one of the biologically least known areas of the Arctic deep sea.
Macro-infauna was collected with 11 box cores at six stations ranging from 640
to 3,250 m water depth. Total abundance ranged from 3 to 265 individuals 0.04
square meters (75 - 6,625 individuals per square meters) and decreased with
increasing ... depth. Biomass ranged from 0.04 to 228 mg wet weight 0.04 square
meters and followed the same trend.
Polychaetes, crustaceans and bivalves dominated the faunal densities, biomass
and species numbers. A total of 90 benthic invertebrate species/taxa (including
15 identified from under-water imager), not part of this data set) from four
biogeographic affinities were identified, including at least three new species
of Isopoda. The evident low abundances and biomass are in agreement with
findings from the Eurasian Arctic deep sea. This dataset exist in Excel format,
and presents the foundation for a scientific publication by Bluhm et al (2005).
The purpose of the dataset is to assess species composition, abundance and
distribution of the infauna of the Arctic Canada Basin.
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Data Set Citation
Dataset Originator/Creator: Bluhm, B.A., MacDonald IR, Debenham C, Iken K.
Dataset Title: Macro and megabenthic Communities in the High Arctic Canada Basin: Initial Findings
Dataset Series Name: Polar Biology
Dataset Release Date: 2004
Issue Identification: 28: 218-231
Start Date: 2002-08-13Stop Date: 2002-09-08
Quality The animals counts were done according to convention: sorting
under a stereo microscope after sieving and preservations. A 250
micrometer mesh was used for sieving. Accuracy is unknown. Box
cores likely lose some light epifauna during coring process, but
this is the most common deep-sea infauna collection tool used.
The same procedures were used at all sites and for all species;
findings should be consistent.
Sieve size used: 250 micrometer. Thickness of sampled sediment
layer: top 3 cm (mud layer above solid clay). Box core area:
0.25 square meters. Very small number of samples (11 box cores)
taken in entire study area (Canada Basin, Northwind Ridge,
GPS locations taken from ship log at the time the box core
touched the bottom 4 decimals in GPS reading.
Access Constraints None
Use Constraints Do not redistribute to third parties. When not provided by taxonomist,
taxonomic information was completed using ITIS (e.g. in many cases for ORDER).
Data Set Progress
Role: TECHNICAL CONTACT
Email: bluhm at ims.uaf.edu
IMS/SFOS University of Alaska Fairbanks, P.O. Box 757220
Province or State: Alaska
Postal Code: 99775-7220
Role: DIF AUTHOR
Phone: (301) 614-6898
Email: Tyler.B.Stevens at nasa.gov
NASA Goddard Space Flight Center Global Change Master Directory
Province or State: MD
Postal Code: 20771
Bluhm et al, 2005, Ocean exploration 2002 Canada Basin, Louis S. St. Laurent,Kugluktuk-Barrow, Aug 13-Sept 8, 2002, 28: 218-231, Polar Biology.
Bluhm, B.A., MacDonald I.R., Debenham, C., Iken, K, 2004, Macro and megabenthic communities in the high Arctic Canada Basin, initial findings paper, Polar Biology, 28: 218-231.
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2005-12-30
Last DIF Revision Date: 2012-12-21