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Fram Strait Polychaeta (IPOE), 1994-1995
Entry ID: ArcOD_2006B7

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Summary
Abstract: The macrobenthic fauna of the East Greenland continental margin was investigated between 74 N and 82 N in summer and autumn 1994 and 1995 with a main emphasis on polychaetes. A major goal was to describe the community structure (distribution, composition, diversity, abundance, biomass) in relation to environmental factors. Samples were collected during two expeditions with RV ‘Polarstern’ in July 1994 (ARK X/1) and September/October 1995 (ARK XI/2) with a giant box corer and a multiple corer. Stations were located on two down-slope transects across the continental shelf break at 75 N (200 to 2700 m depth) and at 79 N (200 to 2000 m depth) and at latitudinal transect at 2000 m depth between 79 N and 80 30'N. In total 33 box corer samples (0.0625 m2) and 4 multicorer samples from 15 positions were analysed. For analysis of vertical distribution of macrofauna in the sediment, samples were divided into two layers (0–1 cm, 1–6 cm). Macrofaunal abundance was assessed, biomass was estimated by wet weight and biometric modelling. Additionally, sediment properties like grain size, Corg content and C:N ratio were analysed. Macrofauna samples included Porifera, Brachiopoda, Sipunculida, Nemertini, Priapulida, Aplacophora, Bivalvia, Gastropoda, Polychaeta, Acari, Crustacea, Ophiuroidea and Holothuroidea. For Polychaeta, 81 species were identified. At the shelf stations (200 to 400 m) mean macrobenthic abundance (biomass) was 5673 ind. m-2 (0.55 g C m-2), at mid-slope stations (800 to1400 m) 2047 ind. m-2 (0.20 g C m-2) and at deep-sea stations (2700 m) 1800 ind. m-2 (0.13 g C m-2). Macrofaunal abundance and biomass values were in the same order of magnitude as those from other continental margins and revealed an exponentially decrease with increasing water depth. There was no general correlation between community patterns and sediment parameters like grain size, Corg content, C:N ratio or chl a content. The macrofaunal organisms were concentrated to the upper centimeter of the sediment. This layer accounted on average for 66 % of total abundance and 48 % of total biomass. Vertical distribution patterns of animals reflected life strategy and food supply to the benthos. The polychaete community consisted mainly of Atlantic faunal elements and was characterized by a low number of species. Species diversity decreased with increasing depth and was low compared with more temperate areas. Multivariate statistics revealed a depth zonation with 3 distinct polychaete assemblages at shallow (200 to 400 m), mid-slope (800 to 1400 m) and deep-sea stations (> 1400 m) for the two down-slope transects along 75 N and 79 N. On the continental shelf between 74 N and 79 N the assemblages were rather similar in composition. With increasing water depth the similarity between the transects decreased. Stations from the latitudinal transect at 2000 m depth were rather different from the stations at the down-slope transects. A correlation analysis showed that the structure of the polychaete assemblages was mainly related to water depth. However, not depth per se but depth-dependent factors like hydrography, food input and sediment structure are thought to be most important. The regional patterns of community structure at the East Greenland continental margin can be explained by the large-scale hydrography and the temporal and spatial heterogeneity of particle sedimentation.

Purpose: Describe the macrofaunal community patterns at the continental margin off East Greenland

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Parent DIF
This description is a member of a collection. The collection is described in
ArcOD


Geographic Coverage
 N: 80.4807 S: 74.9091  E: -3.8681  W: -13.8014

Data Set Citation
Dataset Originator/Creator: Schnack, Klaus
Dataset Title: Fram Strait Polychaeta (IPOE), 1994-1995
Dataset Series Name: Berichte zur Polarforschung
Dataset Release Date: 1998
Issue Identification: 294
Online Resource: http://ak.aoos.org/ArcOD/data_table.php


Temporal Coverage
Start Date: 1994-07-13
Stop Date: 1995-09-30


Location Keywords
OCEAN > ARCTIC OCEAN
CONTINENT > NORTH AMERICA > GREENLAND
GEOGRAPHIC REGION > ARCTIC
GEOGRAPHIC REGION > POLAR


Science Keywords
BIOLOGICAL CLASSIFICATION >ANIMALS/INVERTEBRATES >SEGMENTED WORMS (ANNELIDS)    [Definition]
BIOSPHERE >ECOSYSTEMS >MARINE ECOSYSTEMS >BENTHIC    [Definition]
BIOSPHERE >ECOLOGICAL DYNAMICS >COMMUNITY DYNAMICS >COMMUNITY STRUCTURE    [Definition]


ISO Topic Category
BIOTA
OCEANS


Platform
R/V POLARSTERN    [Information]


Instrument
SEDIMENT CORERS    [Information]


Project
OBIS >OCEAN BIOGEOGRAPHIC INFORMATION SYSTEM    [Information]
ARCOD >ARCTIC OCEAN BIODIVERSITY    [Information]
COML >CENSUS OF MARINE LIFE    [Information]


Quality
ATTRIBUTE ACCURACY REPORT: The upper 6 cm were sampled. The 0-1 mm layer was washed over 300 um mesh, toe 1-6 cm layer was washed over 500 um mesh. The catchability of the was not quantified. The total catch of the upper 6 cm was processed



LOGICAL CONSISTENCY REPORT: The same procedures were used at all sites; findings should be consistent.



COMPLETENESS REPORT: The total catch including all taxa was processed, but only polychaetes are part of this data set.



HORIZONTAL POSITIONAL ACCURACY REPORT: Sites were identified using GPS


PROCESS DESCRIPTION: 1. Change title from "Macrofaunal community patterns at the continental margin off East Greenland " 2. Update v1 to v2 3. Add AOOS Data Management keywords


PROCESS DATE: 20090423

When not provided by authors, taxonomic information was completed using ITIS and is based on quantitative sampling using a box core. It may not represent a complete list of taxa occurring in the region.


Access Constraints
None


Use Constraints
The Authors shall not be held liable for improper or incorrect use of the data described and/or contained herein. These data and related graphics (i.e. GIF or JPG format files) are not legal documents and are not intended to be used as such. The information contained in these data is dynamic and may change over time. The data are not better than the original sources from which they were derived. It is the responsibility of the data user to use the data appropriately and consistent within the limitations of geospatial data in general and these data in particular. The related graphics are intended to aid the data user in acquiring relevant data; it is not appropriate to use the related graphics as data. The authors give no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. It is strongly recommended that these data are directly acquired from a server from a server of the authors and not indirectly through other sources which may have changed the data in some way. Although these data have been processed successfully on computer systems of the authors, no warranty expressed or implied is made regarding the utility of the data on other systems for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data.


Keywords
macrofauna
polychaeta
community pattern
biomass
abundance
boxcore
East Greenland


Data Set Progress
COMPLETE


Originating Center
Alaska Ocean Observing System


Data Center
Institut fuer Meereskunde, University of Kiel, Germany    [Information]
Data Center URL: http://www.ifm-geomar.de/

Data Center Personnel
Name: DIETER PIEPENBURG
Email: dpiepenburg at ipoe.uni-kiel.de
Contact Address:
Wischhofstr. 1–3, Building 12
City: Kiel
Province or State: Schleswig Holstein
Postal Code: 24148
Country: Germany


International Ocean Biogeographic Information System    [Information]
Data Center URL: http://www.iobis.org/

Data Center Personnel
Name: EDWARD VANDEN BERGHE
Phone: (732) 932-6555 x 565
Fax: (732) 932-8578
Email: evberghe at iobis.org
Contact Address:
Institute of Marine and Coastal Sciences
Rutgers University
71 Dudley Road
City: New Brunswick
Province or State: NJ
Postal Code: 08901-8521
Country: USA


Alaska Ocean Observing System, School of Fisheries and Ocean Sciences, University of Alaska - Fairbanks    [Information]
Data Center URL: http://www.aoos.org/

Data Center Personnel
Name: ROB CERMAK
Phone: (907) 474-7948
Email: cermak at sfos.uaf.edu
Contact Address:
Alaska Ocean Observing System
School of Fisheries and Ocean Sciences
University of Alaska Fairbanks
PO Box 757200
City: Fairbanks
Province or State: AK
Postal Code: 99775-7220
Country: USA



Distribution
Fees: None


Personnel
FALK HUETTMANN
Role: TECHNICAL CONTACT
Phone: +01-907-4747882
Fax: +01-907 4746967
Email: fhuettmann at alaska.edu
Contact Address:
419 Irving I, PO Box 757000
City: Fairbanks
Province or State: AK
Postal Code: 99775-7000
Country: USA


KLAUS SCHNACK
Role: INVESTIGATOR
Phone: +49 (431) 880-4022
Email: kschnack at ecology.uni-kiel.de


ALICIA ALEMAN
Role: DIF AUTHOR
Email: alicia.m.aleman at nasa.gov
Contact Address:
Goddard Space Flight Center
Code 610.2
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA


Publications/References
Schäfer, P., Ritzrau, W., Schlüter, M., Thiede, J., (Eds.) 2001 The Northern North Atlantic • A Changing Environment.

Creation and Review Dates
DIF Creation Date: 2007-10-25
Last DIF Revision Date: 2016-01-27



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