Global Change Master Directory (GCMD)

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Fram Strait Polychaeta (IPOE), 1994-1995

Entry ID: ArcOD_2006B7

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

Related URL

Link: View Related Information

Geographic Coverage

Spatial coordinates

N: 80.48

S: 74.91

E: -3.87

W: -13.8

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: 1998-01-01T00:00:00.000Z

Version: Not provided

Issue Identification: 294

Online Resource: http://ak.aoos.org/ArcOD/data_table.php

Parent DIF

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

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)

BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > BENTHIC

BIOSPHERE > ECOLOGICAL DYNAMICS > COMMUNITY DYNAMICS > COMMUNITY STRUCTURE

Platform

R/V POLARSTERN

Instrument

SEDIMENT CORERS

Project

OBIS > OCEAN BIOGEOGRAPHIC INFORMATION SYSTEM

ARCOD > ARCTIC OCEAN BIODIVERSITY

COML > CENSUS OF MARINE LIFE

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.

...

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. ...

Ancillary Keywords

macrofauna

polychaeta

Data Set Progress

COMPLETE

Data Center

GEOMAR - Helmholtz Centre for Ocean Research Kiel, Germany

Data Center URL: http://www.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

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

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: METADATA 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

Extended Metadata Properties

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Creation and Review Dates

DIF Creation Date: 2007-10-25

Last DIF Revision Date: 2018-11-08

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