amundsen_sea_molluscs

Camille Moreau

doi:10.15468/rhocvz

amundsen_sea_molluscs

Citation

Moreau C, Linse K, Griffiths HJ, Barnes DKA, Kaiser S, Glover A, Sands C, Strugnell J, Enderlein P, Geissler P (2013). Amundsen Sea Mollusca from the BIOPEARL II expedition. 692 records, published online, http://ipt.biodiversity.aq/archive.do?r=amundsenseamolluscs_biopearl_ii https://doi.org/10.15468/rhocvz accessed via GBIF.org on 2024-12-14.

Description

Information regarding the molluscs in this dataset is based on the epibenthic sledge (EBS) samples collected during the cruise BIOPEARL II / JR179 RRS James Clark Ross in the austral summer 2008. A total of 34 epibenthic sledge deployments have been performed at five locations in the Amundsen Sea at Pine Island Bay (PIB) and the Amundsen Sea Embayment (ASE) at depths ranging from 476 to 3501m. This presents a unique and important collection for the Antarctic benthic biodiversity assessment as the Amundsen Sea remains one of the least known regions in Antarctica. Indeed the work presented in this dataset is based on the first benthic samples collected with an EBS in the Amundsen Sea. However we assume that the data represented are an underestimation of the real fauna present in the Amundsen Sea. In total 9261 specimens belonging to 6 classes 55 families and 97 morphospecies were collected. The species richness per station varied between 6 and 43. Gastropoda were most species rich (50 species) followed by Bivalvia (37), Aplacophora (5), Scaphopoda (3) and one from each of Polyplacophora and Monoplacophora.

Sampling Description

Study Extent

Five locations in the Pine Island Bay (PIB) and Amundsen Sea Embayment (ASE) at different depths ranging from 476 to 3501m have been sampled using an epibenthic sledge (EBS). Most deployments were made along depth transects from shallow to overdeepened continental shelf and to deeper slope (Figure 1 and 2). At three of the five locations samples were taken at ~500m, ~1000m and ~ 1500m depths, due to the particular geomorphology (presence of deep troughs close to the continent) of the ASE continental plateau. At each site, replicates (individual stations) were taken to assess habitat homogeneity and their number depended on water depth; three to six replicates were taken at 500m and two at 1000m, 1500m and 3500m depth. The BIOPEARL II cruise report is available from the British Oceanographic Data Centre (www.bodc.ac.uk/data/information_and_inventories/cruise_inventory/report/8277).

Sampling

This dataset presents 34 EBS deployments: 21 of which were performed at a depth of 500m at four different sites (BIO3-1, BIO4-3, BIO5-3 and BIO 6-3) , six at a 1000m depth in three areas (BIO4-2, BIO5-2 and BIO6-2), five at a depth of 1500m at three different sites (BIO4-1, BIO5-1 and BIO6-1), and two replicates at site BIO8- 3500 in 3500m depth. For three of the five locations, sites were positioned along vertical transects sampling at 500m, 1000m and 1500m with repeat deployments of the EBS. The sites BIO4-1, BIO4-2 and BIO4-3 and BIO6-1, BIO6-2 and BIO6-3 were situated in the same local area; while the sites BIO5-1, BIO5-2 and BIO5-3 were dispersed over a wider area because of ice cover. The EBS consist of on an epi-(below) and a supra-(above) net. Each of these nets has a mesh size of 500μm and an opening of 100x33cm. The cod end of both nets is equipped with net-buckets containing a 300μm mesh window (Brenke, 2005). The EBS was trawled for 10 minutes on the sea bed at a 1 knot speed for deployments in 500m to 1500m and for 20 min in 3500m. Following Brenke (2005) that epi-and supra-nets are collecting the same fauna, these were pooled and treated as a single sample.Following Brenke ( 2005) that epi-and supra-nets are collecting the same fauna, these were pooled and treated as a single sample.

Quality Control

A species name was given to each specimen when it was possible. Individuals not corresponding to described species have been included in the analyses with the family or genus name and a letter or numerical code (e.g. Turbinidae sp.), however they represent a single morphospecies. For these specimens, further morphological and genetic analyses are necessary to give them a species name but they can be included in this dataset as different species. Finally, specimens too badly damaged for species identification have not been taken in account here. This dataset presents species occurrences and species richness of the individual EBS deployments.

Method steps

- Epibenthic sledge sampling in the Amundsen Sea - Once on the deck, the content of the samplers from the first deployment was immediately fixed in 96% undenaturated and pre-cooled (at -20°C) ethanol (Linse, 2008) and kept for a minimum of 48 hours in a -20°C freezer and the samplers from the second deployment were fixed in 4 % buffered formalin. If six EBS deployments were carried out at a station, four were fixed in ethanol and two in formaldehyde. Afterwards, these samples were washed in cold sea water and transferred to 80 % ethanol. The treatment in formalin allows cytological studies. - The taxonomic identification was performed in the British Antarctic Survey laboratory using a stereomicroscope.

Additional info

marine, harvested by iOBIS

Taxonomic Coverages

The present dataset focus on six molluscs classes (Mollusca: Aplacophora, Monoplacophora, Polyplacophora, Gastropoda, Bivalvia & Scaphopoda). It includes respectively for each class: Aplacophora

Aplacophora sp1
rank: species
Aplacophora sp2
rank: species
Aplacophora sp3
rank: species
Aplacophora sp4
rank: species
Aplacophora sp5
rank: species

Polyplacophora

Leptochitonidae
rank: family
Leptochiton
rank: genus
Leptochiton sp
rank: species

Monoplacophora

Micropilinidae
rank: family
Micropilina
rank: genus
Micropilina sp
rank: species

Gastropoda

Scissurellidae
rank: family
Ataphridae
rank: family
Mangeliidae
rank: family
Capulidae
rank: family
Calliotropidae
rank: family
Seguenzioidea
rank: family
Turbinidae
rank: family
Turridae
rank: family
Eulimidae
rank: family
Limacinidae
rank: family
Eatoniellidae
rank: family
Cancellarioidea
rank: family
Naticidae
rank: family
Rissoidae
rank: family
Diaphinidae
rank: family
Fissurellidae
rank: family
Raphitomidae
rank: family
Cylichnidae
rank: family
Lepetidae
rank: family
Orbitestellidae
rank: family
Buccinidae
rank: family
Mathildidae
rank: family
Newtoniellidae
rank: family
Marginellidae
rank: family
Anatoma
rank: genus
Trochaclis
rank: genus
Lorabela
rank: genus
Belalora
rank: genus
Torellia
rank: genus
Capulus
rank: genus
Calliotropis
rank: genus
Brookula
rank: genus
Lissotesta
rank: genus
Liotella
rank: genus
Cirsonella
rank: genus
Balcis
rank: genus
Onoba
rank: genus
Hemiaclis
rank: genus
Limacina
rank: genus
Eatoniella
rank: genus
Cancellaridae
rank: genus
Falsilunatia
rank: genus
Sinuber
rank: genus
Powellisetia
rank: genus
Rissoid
rank: genus
Toledonia
rank: genus
Fissurellidae
rank: genus
Cornisepta
rank: genus
Zeidora
rank: genus
Pleurotomella
rank: genus
Cylichna
rank: genus
Iothia
rank: genus
Microdiscula
rank: genus
Pareuthria
rank: genus
Turritellopsis
rank: genus
Cerithiella
rank: genus
Marginella
rank: genus
Anatoma euglypta
rank: species
Trochaclis antarctica
rank: species
Lorabela pelseneeri
rank: species
Belalora cf striatula
rank: species
Torellia insignis
rank: species
Capulus sp
rank: species
Calliotropis pelseneeri
rank: species
Brookula cf charleenae
rank: species
Brookula sp
rank: species
Lissotesta sp
rank: species
Liotella sp
rank: species
Liotella cf endeavourensis
rank: species
Cirsonella extrema
rank: species
Turbinid sp
rank: species
Turrid sp 1
rank: species
Turrid sp 2
rank: species
Balcis sp
rank: species
Onoba cf gelida
rank: species
Hemiaclis incolorata
rank: species
Limacina helicina
rank: species
Eatoniella cf kerguelenensis regularis
rank: species
Cancellaridae sp
rank: species
Falsilunatia sp
rank: species
Sinuber multistriatum
rank: species
Powellisetia cf deserta
rank: species
Rissoidae sp
rank: species
Toledonia sp 1
rank: species
Toledonia sp 2
rank: species
Toledonia cf elata
rank: species
Fissurellidae sp 1
rank: species
Fisserulidae sp 2
rank: species
Cornisepta antarctica
rank: species
Zeidora antarctica
rank: species
Pleurotomella cf simillima
rank: species
Cylichna sp
rank: species
Iothia sp
rank: species
Microdiscula sp
rank: species
Pareuthria cf innocens
rank: species
Turritellopsis gratissima
rank: species
Cerithiella cf lineata
rank: species
Cerithiella cf erecta
rank: species
Fissurelidae sp 2
rank: species
Marginella ealesae
rank: species

Bivalvia

Nuculanidae
rank: family
Nuculidae
rank: family
Yoldiidae
rank: family
Limopsidae
rank: family
Philobryidae
rank: family
Mytilidae
rank: family
Limidae
rank: family
Pectinidae
rank: family
Propeamussiidae
rank: family
Thyasiridae
rank: family
Motacutidae
rank: family
Lasaeidae
rank: family
Cyamiidae
rank: family
Carditidae
rank: family
Thraciidae
rank: family
Cuspidariidae
rank: family
Lyonsiidae
rank: family
Poromyidae
rank: family
Neoleptonidae
rank: family
Siliculidae
rank: family
Arcidae
rank: family
Vesicomyidae
rank: family
Tindariidae
rank: family
Bathyspinulidae
rank: family
Propeleda
rank: genus
Ennucula
rank: genus
Yoldiella
rank: genus
Limopsis
rank: genus
Philobrya
rank: genus
Adacnarca
rank: genus
Dacrydium
rank: genus
Limatula
rank: genus
Adamussium
rank: genus
Hyalopecten
rank: genus
Cyclochlamys
rank: genus
Thyasira
rank: genus
Mysella
rank: genus
Waldo
rank: genus
Cyamiocardium
rank: genus
Cyclocardia
rank: genus
Thracia
rank: genus
Cuspidaria
rank: genus
Myonera
rank: genus
Lyonsia
rank: genus
Poromya
rank: genus
Neolepton
rank: genus
Silicula
rank: genus
Bathyarca
rank: genus
Vesicomya
rank: genus
Tindaria
rank: genus
Bathyspinula
rank: genus
Propeleda longicaudata
rank: species
Ennucula sp
rank: species
Yoldiella ecaudata
rank: species
Yoldiella sabrina
rank: species
Yoldiella valettei
rank: species
Yoldiella cf profundorum
rank: species
Yoldiella oblonga
rank: species
Yoldiella sp
rank: species
Limopsis longipilosa
rank: species
Limopsis knudseni
rank: species
Philobrya sublaevis
rank: species
Philobrya quadrata
rank: species
Adacnarca nitens
rank: species
Dacrydium albidum
rank: species
Limatula Limatula sp
rank: species
Limatula Antarctolima sp
rank: species
Adamussium colbecki
rank: species
Hyalopecten pudicus
rank: species
Cyclopecten pteriola
rank: species
Cyclochlamys gaussiana
rank: species
Thyasira sp
rank: species
Mysella antarctica
rank: species
Waldo sp
rank: species
Cyamiocardium denticulatum
rank: species
Cyclocardia astartoides
rank: species
Thracia meridionalis
rank: species
Cuspidaria infelix
rank: species
Cuspidaria minima
rank: species
Myonera fragilissima
rank: species
Lyonsia arcaeformis
rank: species
Poromya antarctica
rank: species
Neolepton sp
rank: species
Silicula rouchi
rank: species
Bathyarca sinuata
rank: species
Vesicomya sirenkoi
rank: species
Tindaria sp
rank: species
Bathyspinula sp
rank: species
Cyclopecten
rank: genus

Scaphopoda

Dentaliidae
rank: family
Pulsellidae
rank: family
Gadilidae
rank: family
Dentalium
rank: genus
Striopulsellum
rank: genus
Cadulus
rank: genus
Dentalium majorinum
rank: species
Striopulsellum sp
rank: species
Cadulus sp
rank: species

Geographic Coverages

Amundsen Sea, Antarctica

Bibliographic Citations

Brenke N (2005) An epibenthic sledge for operations on marine soft bottom and bedrock. J Mar Technol Soc 39(2):10–19 -
Dowdeswell JA, Evans J, Cofaigh, Anderson JB (2006), Morphology and sedimentary processes on the continental slope off Pine Island Bay, Amundsen Sea, West Antarctica. Geol Soc Am Bull 118: 606-619 -
Graham AGC, Larter RD, Gohl K, Dowdeswell JA, Hillenbrand C-D, Smith JA, Evans J, Kuhn G (2010) Flow and retreat of the Late Quaternary Pine Island-Thwaites palaeo-ice stream, West Antarctica, J Geophys Res 115. -
Jacobs SS, Jenkins A, Giulivi CF, Dutrieux P (2011) Stronger ocean circulation and increased melting under Pine Island Glacier ice shelf. Nature Geosci 4:519–523. -
Jenkins A, Hayes D, Brandon M, Pozzi-Walker Z, Hardy S, Banks C (2004) Oceanographic Observations at the Amundsen Sea Shelf Break. FRISP Report No 15 -
Larter RD, Graham AGC, Gohl K, Kuhn G, Hillenbrand C-D, Smith JA, Deen TJ, Livermore RA, Schenke H-W (2009) Subglacial bedforms reveal complex basal regime in a zone of paleo-ice stream convergence, Amundsen Sea Embayment, West Antarctica. Geology 37:411-414 -
Lowe AL, Anderson JB (2002) Reconstruction of the West Antarctic ice sheet in Pine Island Bay during the Last Glacial maximum and its subsequent retreat history. Quat Sci Revs 21:1879-1897 -
Nitsche FO, Jacobs SS, Larter RD, Gohl K (2007) Bathymetry of the Amundsen Sea continental shelf: Implications for, geology, oceanography and glaciology. Geochem Geophys Geosys 8: Q10009. -
Noormets R, Dowdeswell JA, Larter RA, Cofaigh C Ó, Evans J (2009) Morphology of the upper continental slope in the Amundsen and Bellingshausen seas – implications for sedimentary processes at the shelf edge of West Antarctica. Mar Geol 258:100-114 -
Vaughan DG (2008) West Antarctic Ice Sheet collapse – the fall and rise of a paradigm. Clim Change 91: 65-79 -
Linse K, Walker LJ , Barnes DKA (2008) Biodiversity of echinoids and their epibionts around the Scotia Arc, Antarctica. Antarctic Science, 20, pp 227–244. doi: 10.1017/S0954102008001181 -

Contacts

Camille Moreau
originator
position: Marine Benthos Technician
British Antarctic Survey (BAS)
High Cross Madingley Road
Cambridge
CB3 0ET
GB
email: mr.moreau.camille@gmail.com

Camille Moreau
metadata author
position: Marine Benthos Technician
British Antarctic Survey (BAS)
High Cross Madingley Road
Cambridge
CB3 0ET
GB
email: mr.moreau.camille@gmail.com

Camille Moreau
author
position: Marine Benthos Technician
British Antarctic Survey (BAS)
High Cross Madingley Road
Cambridge
CB3 0ET
GB
email: mr.moreau.camille@gmail.com

Katrin Linse
author
British Antarctic Survey (BAS)
High Cross Madingley Road
Cambridge
CB3 0ET
GB
email: kl@bas.ac.uk

Huw Griffiths
author
British Antarctic Survey (BAS)
High Cross Madingley Road
Cambridge
CB3 0ET
GB
email: hjg@bas.ac.uk

David Barnes
administrative point of contact
British Antarctic Survey (BAS)
High Cross Madingley Road
Cambridge
CB3 0ET
GB

Stefanie Kaiser
administrative point of contact
Biocentre Grindel and Zoological Museum
Martin-Luther-King-Platz 3, 20146 Hamburg
Hamburg
DE

Adrian Glover
administrative point of contact
Natural History Museum
London
GB

Chester Sands
administrative point of contact
British Antarctic Survey (BAS)
High Cross Madingley Road
Cambridge
CB3 0ET
GB

Jan Strugnell
administrative point of contact
La Trobe Institute for Molecular Science
AU

Peter Enderlein
administrative point of contact
British Antarctic Survey (BAS)
High Cross Madingley Road
Cambridge
CB3 0ET
GB

Paul Geissler
administrative point of contact
British Antarctic Survey (BAS)
Cambridge
CB3 0ET
GB

Camille Moreau
administrative point of contact
position: Marine Benthos Technician
British Antarctic Survey (BAS)
High Cross Madingley Road
Cambridge
CB3 0ET
GB
email: mr.moreau.camille@gmail.com
homepage: http://www.antarctica.ac.uk/