Benthic community structure in the Chirikov Basin, northern Bering Sea: A comparison between 1986 and 2002Entry ID: ArcOD_2007B2
Abstract: Macrobenthic infauna collections were made to investigate potential changes in community structure (abundance, biomass, diversity) in the Chirikov Basin, northern Bering Sea between 1986 and 2002; one of the biomass hot spot region in the Arctic. Two cruises to the Chirikov Basin were conducted in the years 1986 and 2002 with the R/V/ Alpha Helix. Samples were taken at the same 20 stations during ... both cruises, 15 of which were included in this study. Infauna was collected at each station with a 0.1m2 van Veen grab. Total abundance ranged from 343-13,373 individuals m-2 in 1986 and from 1093-11,418 individuals m-2 in 2002. Biomass ranged from 20-515g wet weight m-2 in 1986 and from 62-1694g wet weight m-2 in 2002. Total abundance and biomass in the Chirikov Basin were dominated by amphipods of the family Ampeliscidae. Other abundant taxa were other Crustacea, Mollusca and Polychaeta. Overall, a trend (though not statistically significant at all stations) for hi gher abundance and biomass was observed in 2002 compared to 1986. This thesis is part of a larger study in the Chirikov Basin that focused on ampeliscid amphipods only (Coyle et al, Deep-Sea Research II, scheduled for December 2007). This study used the WORMS and ITIS databases for the taxonomic information. Estimates of abundance are not corrected for detectability.
Purpose: To asses community structure (abundance, biomass, diversity) of the infauna of the Chirikov Basin, northern Bering Sea for the years 1986 and 2002.
Data Set Citation
Dataset Originator/Creator: Wenzel, M., Bluhm, B.A., Iken, K.
Dataset Title: Benthic community structure in the Chirikov Basin, northern Bering Sea: A comparison between 1986 and 2002
Other Citation Details: Master Thesis (German), University of Marburg, 2007Online Resource: http://ak.aoos.org/ArcOD/data_table.php
This description is a member of a collection. The collection is described in
Start Date: 1986-01-01Stop Date: 2002-12-31
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > BRYOZOANS/MOSS ANIMALS
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CRUSTACEANS > COPEPODS
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CRUSTACEANS > DECAPODS
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CRUSTACEANS > AMPHIPODS
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CRUSTACEANS > OSTRACODS
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CRUSTACEANS > ISOPODS
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > PEANUT WORMS
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > CNIDARIANS > HYDROZOANS
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ECHINODERMS
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > MOLLUSKS > GASTROPODS
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > MOLLUSKS > BIVALVES
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > SEGMENTED WORMS (ANNELIDS)
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > TUNICATES
BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > BENTHIC
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > CNIDARIANS > ANTHOZOANS/HEXACORALS
Quality ATTRIBUTE ACCURACY REPORT: Accuracy of the van Veen grab was not tested. The complete grab sample was washed over 1 mm screen and all specimens were preserved and later sorted. When hitting the sea floor, van Veen grabs blow away an unknown (specimen-density specific) portion of the sediment surface. Despinte this, van Veen grabs are the standard tool for sampling macroinfauna (details in ... ���Methods for the Study of Marine Benthos by N. A. Holme, A. D. McIntyre���)
LOGICAL CONSISTENCY REPORT: The same procedures were used at all sites; findings should be consistent.
COMPLETENESS REPORT: Samples are complete; all taxa were sorted, but not to species level. Ampeliscid amphipods were previously analyzed by Coyle et al. (see cross reference).
HORIZONTAL POSITIONAL ACCURACY REPORT: Sites were identified using ship GPS (R/V Alpha Helix, out of commission as of 2006)
When not provided by authors, taxonomic information was completed using ITIS and WORMS. Taxon list is based on quantitative distribution sampling with a van Veen grab and may not represent a complete list of taxa occurring in the region.
PROCESS DESCRIPTION: applicable since fully explained in Methodology: see above. Table of station latitudes and longitudes are given in Master Thesis.
PROCESS DESCRIPTION: Added AOOS/IOOS core variables. Added ArcOD archive information
Access Constraints None.
Use Constraints Contacting data owners is recommended for valid interpretation of these data.
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Data Set Progress
Distribution Format: EXCEL
Role: TECHNICAL CONTACT
Fax: +01-907 4746967
Email: fhuettmann at alaska.edu
419 Irving I, PO Box 757000
Province or State: AK
Postal Code: 99775-7000
Role: DIF AUTHOR
Email: alicia.m.aleman at nasa.gov
Goddard Space Flight Center Code 610.2
Province or State: MD
Postal Code: 20771
Graham, C. H., S. Ferrier, F. Huettmann, C. Moritz and A.T. Peterson (2004), New developments in museum-based informatics and applications in biodiversity analysis, Trends in Ecology and Evolution, 19, 497-503
Coyle C, Bluhm BA, Konar B, Blanchard A, Highsmith R (2007), Amphipod prey of gray whales in the northern Bering Sea: comparison of biomass and distribution between the 1980s and 2002-2003, Deep-Sea Research 2
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Creation and Review Dates
DIF Creation Date: 2009-01-19
Last DIF Revision Date: 2016-10-14