Canada Basin Ocean 1 Infauna CCGC Louis S. St. Laurent 2002-23Entry ID: UAF_CanadaBasin
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 (756,625 individuals per square meters) and decreased with
increasing depth. ... Biomass ranged from 0.04 to 228 mg wet weight 0.04 m2
(15,700 mg wet weight per square meter) 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).
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: Falk Huettmann
Dataset Title: Canada Basin Ocean 1 Infauna CCGC Louis S. St. Laurent 2002-23
Dataset Release Place: Fairbanks, Alaska
Dataset Publisher: University of Alaska
Start Date: 2002-08-13Stop Date: 2002-09-18
Quality The animals counts were done according to convention: sorting under a stereo
microscope after sieving and preservations. A 250µm 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.
Sieve size used: 250 µm. 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, coordinates above).
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
Bluhm BA, MacDonald IR, Debenham C, Iken K, 2004, Macro- and megabenthic
communities in the high Arctic Canada, initial findings, 28: 218-231, Polar
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2005-11-28
Last DIF Revision Date: 2012-12-21