The Distribution of Zooplankton in the Bering Strait, July 1991.
Entry ID: ArcOD_2006P2
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Zooplankton was sampled at 16 stations across the Bering Strait during a joint Russian-U.S. research cruise at R/V Tiglax in July 1991. Vertical stratified tows (0 - bottom and 0 ��� thermocline depth) were done with a ring net (1 m diameter, 333 ��m mesh). Distinct zooplankton communities were found in the Bering Sea/Anadyr and Alaskan water masses. The influence of the Anadyr water led to a decline in the number of species in the Bering Shelf water community in the western Bering Strait. Zooplankton biomass in the surface layer of Alaska coastal waters was 1.5 times higher than biomass in the surface layer of Bering/Anadyr waters. No differences were observed in zooplankton density and biomass between the thermocline and surface and bottom and surface in Alaska coastal waters, while in other regions maximum density and biomass occurred below the thermocline. Total zooplankton abundance and biomass in the Bering-Anadyr water were dominated by North Pacific species (e.g., Neocalanus plumchrus, Neocalanus cristatus, Metridia pacifica), while in the Alaskan water Calanus marshallae, Acartia spp., Centropages abdominalis and larval euphausiids were common. Physical concentration of zooplankton by currents led to highest zooplankton densities near the Diomede Islands.
Purpose: To assess summer species composition, abundance and distribution of zooplankton across the Bering Strait.
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This description is a member of a collection. The collection is described in|
|N: 65.985||S: 65.451||E: -168.383||W: -169.667||
Data Set Citation
Dataset Title: The Distribution of Zooplankton in the Bering Strait, July 1991.
Dataset Series Name: Exploration of the Fauna of the Seas (in Russian)
Dataset Release Date: 1993
Issue Identification: 45(53): 138-154
Online Resource: http://ak.aoos.org/ArcOD/data_table.php
|Start Date: 2001-07-01|
|Stop Date: 2001-07-08|
|BIOLOGICAL CLASSIFICATION >ANIMALS/VERTEBRATES >FISH >RAY-FINNED FISHES|
|BIOLOGICAL CLASSIFICATION >ANIMALS/INVERTEBRATES >ARTHROPODS >CRUSTACEANS >EUPHAUSIIDS (KRILL)|
|BIOLOGICAL CLASSIFICATION >ANIMALS/INVERTEBRATES >ARTHROPODS >CRUSTACEANS >COPEPODS|
|BIOLOGICAL CLASSIFICATION >ANIMALS/INVERTEBRATES >ARTHROPODS >CRUSTACEANS >DECAPODS|
|BIOLOGICAL CLASSIFICATION >ANIMALS/INVERTEBRATES >ARTHROPODS >CRUSTACEANS >BARNACLES|
|BIOLOGICAL CLASSIFICATION >ANIMALS/INVERTEBRATES >ARTHROPODS >CRUSTACEANS >OSTRACODS|
|BIOLOGICAL CLASSIFICATION >ANIMALS/INVERTEBRATES >CNIDARIANS >HYDROZOANS|
|BIOLOGICAL CLASSIFICATION >ANIMALS/INVERTEBRATES >MOLLUSKS >GASTROPODS|
|BIOLOGICAL CLASSIFICATION >ANIMALS/INVERTEBRATES >MOLLUSKS >BIVALVES|
|BIOLOGICAL CLASSIFICATION >ANIMALS/INVERTEBRATES >SEGMENTED WORMS (ANNELIDS) [Definition]|
|BIOSPHERE >ECOSYSTEMS >AQUATIC ECOSYSTEMS >PLANKTON >ZOOPLANKTON [Definition]|
ISO Topic Category
|PLANKTON NETS [Information]|
|OBIS >OCEAN BIOGEOGRAPHIC INFORMATION SYSTEM [Information]|
|ARCOD >ARCTIC OCEAN BIODIVERSITY [Information]|
|COML >CENSUS OF MARINE LIFE [Information]|
ATTRIBUTE ACCURACY REPORT: The animals counts were done according to convention: sorting under a stereo microscope after preservations. Geographical positions were taken from ship log before deploying the net.|
LOGICAL CONSISTENCY REPORT: The same procedures were used at all sites and for all species; findings should be consistent.
COMPLETENESS REPORT: Mesh size used: 333 ��m. Thickness of sampled layer: from the bottom to the top and from the thermocline to the top. Abundance computed for each taxon per sample as a number of specimens divided by volume of filtered water (estimated by multiplying the net mouth area by tow depth).
HORIZONTAL POSITIONAL ACCURACY REPORT: contact R/V Tiglax, U.S. F.W.S
PROCESS DESCRIPTION: Zooplankton was collected with 333 ��m mesh ring net on 16 stations in July 1991. Duplicate vertical tows were made at bottom - 0 m, and thermocline - 0 m depth increments. Zooplankton samples were gently rinsed from the net and preserved in buffered formaldehyde seawater solution (4% final concentration). Preserved samples were sorted and identified to the lowest taxon possible under stereo microscopes in the lab. Mean abundance and biomass resulted from repetitive tows were calculated for each layer on each station.
PROCESS DESCRIPTION: Added AOOS/IOOS core variables. Added ArcOD archive information
PROCESS DATE: 1991
PROCESS DATE: 20091208
These data present a snapshot in time, but are representative for the location and depth where collected. Identification is done where applicable and known; different taxonomies might result into different species names.
These data cannot be redistributed to third parties.|
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|vertical stratified tows|
Data Set Progress
|Alaska Ocean Observing System|
International Ocean Biogeographic Information System
Data Center URL: http://www.iobis.org/
Alaska Ocean Observing System, School of Fisheries and Ocean Sciences, University of Alaska - Fairbanks
Data Center URL: http://www.aoos.org/
MS Excel database
Phone: 907 474-7842
P.O. Box 757220
Province or State: Alaska
Postal Code: 99775
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
Province or State: MD
Postal Code: 20771
Piatt J.F., A.I. Pinchuk, A.S. Kitaisky, A.M. Springer, S.A. Hatch 1992 Foraging distribution and feeding ecology of seabirds at the Diomede Islands, Bering Strait. U.S. Fish and Wildlife. Serv. Final Report for Minerals Management Service OCS Study MMS 92-0041, Anchorage, Alaska: 133 pp.
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.