Fram Strait Polychaeta (IPOE), 1994-1995

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Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Schnack, Klaus

Publication_Date: 1998

Title: Fram Strait Polychaeta (IPOE), 1994-1995

Geospatial_Data_Presentation_Form:

Series_Information:

Series_Name: Berichte zur Polarforschung
Issue_Identification: 294

Online_Linkage: <http://science.nature.nps.gov/nrdata>

Description:

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

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19940713
Ending_Date: 19950930

Currentness_Reference:

Status:

Progress:
Maintenance_and_Update_Frequency:

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: 13.8014
East_Bounding_Coordinate: 3.8681
North_Bounding_Coordinate: 80.4807
South_Bounding_Coordinate: 74.9091

Keywords:

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: macrofauna
Theme_Keyword: polychaeta
Theme_Keyword: community pattern
Theme_Keyword: Arctic Ocean
Theme_Keyword: biomass
Theme_Keyword: abundance
Theme_Keyword: boxcore

Theme:

Theme_Keyword_Thesaurus: National Park Service Theme Category Thesaurus
Theme_Keyword: macrofauna
Theme_Keyword: polychaeta
Theme_Keyword: community pattern
Theme_Keyword: Arctic Ocean
Theme_Keyword: biomass
Theme_Keyword: abundance
Theme_Keyword: boxcore

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: macrofauna
Theme_Keyword: polychaeta
Theme_Keyword: community pattern
Theme_Keyword: Arctic Ocean
Theme_Keyword: biomass
Theme_Keyword: abundance
Theme_Keyword: boxcore

Place:

Place_Keyword_Thesaurus: none
Place_Keyword: East Greenland
Place_Keyword: Arctic
Place_Keyword: Arctic Ocean

Place:

Place_Keyword_Thesaurus: National Park System Unit Name Thesaurus
Place_Keyword: East Greenland
Place_Keyword: Arctic
Place_Keyword: Arctic Ocean

Place:

Place_Keyword_Thesaurus: National Park System Unit Code Thesaurus
Place_Keyword: East Greenland
Place_Keyword: Arctic
Place_Keyword: Arctic Ocean

Theme:

Theme_Keyword_Thesaurus: IOOS Core Variables
Theme_Keyword: Version 1
Theme_Keyword: Biology

Theme:

Theme_Keyword_Thesaurus: IOOS National Backbone Programs
Theme_Keyword: Version 1
Theme_Keyword: Alaska Ocean Observing System

Theme:

Theme_Keyword_Thesaurus: Core Variable Map
Theme_Keyword: Biology

Theme:

Theme_Keyword_Thesaurus: AOOS Data Services
Theme_Keyword: dsid=ARCOD
Theme_Keyword: db=arcod
Theme_Keyword: archive=2007/0000024
Theme_Keyword: collectioncode=2006B7

Taxonomy:

Keywords/Taxon:

Taxonomic_Keyword_Thesaurus: None
Taxonomic_Keywords: collection
Taxonomic_Keywords: multiple species
Taxonomic_Keywords: single species
Taxonomic_Keywords: Orbiniella
Taxonomic_Keywords: Abyssoninoe scopa
Taxonomic_Keywords: Aglaophamus malmgreni
Taxonomic_Keywords: Amage auricula
Taxonomic_Keywords: Amage gallasii
Taxonomic_Keywords: Amagopsis klugei
Taxonomic_Keywords: Ampharete lindstroemi
Taxonomic_Keywords: Ampharete
Taxonomic_Keywords: Ampharetidae
Taxonomic_Keywords: Amphinomidae
Taxonomic_Keywords: Amphitritinae
Taxonomic_Keywords: Anobothrus gracilis
Taxonomic_Keywords: Aricidea quadrilobata
Taxonomic_Keywords: Artacama proboscidea
Taxonomic_Keywords: Chaetozone setosa
Taxonomic_Keywords: Chone paucibranchiata
Taxonomic_Keywords: Chone
Taxonomic_Keywords: Cirratulus
Taxonomic_Keywords: Cossura longocirrata
Taxonomic_Keywords: Eclysippe vanelli
Taxonomic_Keywords: Eteone longa
Taxonomic_Keywords: Euchone elegans
Taxonomic_Keywords: Euchone
Taxonomic_Keywords: Euclymeninae
Taxonomic_Keywords: Galathowenia oculata
Taxonomic_Keywords: Glyphanostomum pallescens
Taxonomic_Keywords: Harmothoe sarsi
Taxonomic_Keywords: Hesionidae
Taxonomic_Keywords: Lumbrineris aniara
Taxonomic_Keywords: Lumbrineris fragilis
Taxonomic_Keywords: Lumbrineris tetraura
Taxonomic_Keywords: Macrochaeta polyonyx
Taxonomic_Keywords: Maldane sarsi
Taxonomic_Keywords: Melinna cristata
Taxonomic_Keywords: Melinnopsis arctica
Taxonomic_Keywords: Mellinninae
Taxonomic_Keywords: Mugga wahrbergi
Taxonomic_Keywords: Myriochele fragilis
Taxonomic_Keywords: Myriochele heeri
Taxonomic_Keywords: Nephtyidae
Taxonomic_Keywords: Nicomache personata
Taxonomic_Keywords: Nothria conchylega
Taxonomic_Keywords: Notomastus latericeus
Taxonomic_Keywords: Notoproctus oculatus
Taxonomic_Keywords: Ophelina abranchiata
Taxonomic_Keywords: Ophelina cylindricaudata
Taxonomic_Keywords: Ophelina
Taxonomic_Keywords: Pherusa flabellata
Taxonomic_Keywords: Pholoë minuta
Taxonomic_Keywords: Phyllodocidae
Taxonomic_Keywords: Polycirrinae
Taxonomic_Keywords: Polynoidae
Taxonomic_Keywords: Potamilla neglecta
Taxonomic_Keywords: Praxillura longissima
Taxonomic_Keywords: Prionospio cirrifera
Taxonomic_Keywords: Samythella neglecta
Taxonomic_Keywords: Scalibregma inflatum
Taxonomic_Keywords: Sphaerodoropsis philippi
Taxonomic_Keywords: Spio
Taxonomic_Keywords: Spiochaetopterus typicus
Taxonomic_Keywords: Spiophanes kröyeri
Taxonomic_Keywords: Syllinae
Taxonomic_Keywords: Terebellidae
Taxonomic_Keywords: Terebellides stroemi
Taxonomic_Keywords: Terebellomorpha
Taxonomic_Keywords: Trichobranchidae
Taxonomic_Keywords: Typosyllis cornuta

Taxonomic_System:

Classification_System/Authority:

Classification_System_Citation:

Citation_Information:

Originator: Hartmann-Schroeder 1996 und Kirkegaard 1992 and 1996 (in data)
Originator: ITIS (for Metadata; but see missing/mismatching species below)
Publication_Date: Unknown
Title:
Geospatial_Data_Presentation_Form:

Classification_System_Modifications:

Hartmann-Schroeder 1996 und Kirkegaard 1992 and 1996 (in data) ITIS (for Metadata)

Taxonomic_Procedures:

Specimens were counted and identified to putative species or the lowest possible taxon. Only polychaetes are included in this data set.

Taxonomic_Completeness:

All polychaetes were identified to the lowest taxonomic level possible, mostly species level. The following species were not found in ITIS and thus not included in the taxonomic tree shown here: Abyssoninoe scopa Amagopsis klugei Amphitritinae Chone paucibranchiata Euclymeninae Harmothoe sarsi Melinnopsis arctica Mellinninae Myriochele fragilis Polycirrinae Sphaerodoropsis philippi Terebellomorpha