amundsen_sea_molluscs
Camille
Moreau
British Antarctic Survey (BAS)
Marine Benthos Technician
High Cross Madingley Road
Cambridge
CB3 0ET
GB
mr.moreau.camille@gmail.com
Camille
Moreau
British Antarctic Survey (BAS)
Marine Benthos Technician
High Cross Madingley Road
Cambridge
CB3 0ET
GB
mr.moreau.camille@gmail.com
Camille
Moreau
British Antarctic Survey (BAS)
Marine Benthos Technician
High Cross Madingley Road
Cambridge
CB3 0ET
GB
mr.moreau.camille@gmail.com
author
Katrin
Linse
British Antarctic Survey (BAS)
High Cross Madingley Road
Cambridge
CB3 0ET
GB
kl@bas.ac.uk
author
Huw
Griffiths
British Antarctic Survey (BAS)
High Cross Madingley Road
Cambridge
CB3 0ET
GB
hjg@bas.ac.uk
author
David
Barnes
British Antarctic Survey (BAS)
High Cross Madingley Road
Cambridge
CB3 0ET
GB
Stefanie
Kaiser
Biocentre Grindel and Zoological Museum
Martin-Luther-King-Platz 3, 20146 Hamburg
Hamburg
DE
Adrian
Glover
Natural History Museum
London
GB
Chester
Sands
British Antarctic Survey (BAS)
High Cross Madingley Road
Cambridge
CB3 0ET
GB
Jan
Strugnell
La Trobe Institute for Molecular Science
AU
Peter
Enderlein
British Antarctic Survey (BAS)
High Cross Madingley Road
Cambridge
CB3 0ET
GB
Paul
Geissler
British Antarctic Survey (BAS)
Cambridge
CB3 0ET
GB
2013-01-09
eng
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.
Mollusca; Antarctica; Amundsen Sea; Bivalvia; Gastropoda; Scaphopoda; Aplacophora; Monoplacophora; Polyplacophora; BIOPEARL II
n/a
Amundsen Sea, Antarctica
-110.09
-104.34
-70.02
-74.49
2008-02-18
2008-04-11
The present dataset focus on six molluscs classes (Mollusca: Aplacophora, Monoplacophora, Polyplacophora, Gastropoda, Bivalvia & Scaphopoda). It includes respectively for each class:
Aplacophora
species
Aplacophora sp1
species
Aplacophora sp2
species
Aplacophora sp3
species
Aplacophora sp4
species
Aplacophora sp5
Polyplacophora
family
Leptochitonidae
genus
Leptochiton
species
Leptochiton sp
Monoplacophora
family
Micropilinidae
genus
Micropilina
species
Micropilina sp
Gastropoda
family
Scissurellidae
family
Ataphridae
family
Mangeliidae
family
Capulidae
family
Calliotropidae
family
Seguenzioidea
family
Turbinidae
family
Turridae
family
Eulimidae
family
Limacinidae
family
Eatoniellidae
family
Cancellarioidea
family
Naticidae
family
Rissoidae
family
Diaphinidae
family
Fissurellidae
family
Raphitomidae
family
Cylichnidae
family
Lepetidae
family
Orbitestellidae
family
Buccinidae
family
Mathildidae
family
Newtoniellidae
family
Marginellidae
genus
Anatoma
genus
Trochaclis
genus
Lorabela
genus
Belalora
genus
Torellia
genus
Capulus
genus
Calliotropis
genus
Brookula
genus
Lissotesta
genus
Liotella
genus
Cirsonella
genus
Balcis
genus
Onoba
genus
Hemiaclis
genus
Limacina
genus
Eatoniella
genus
Cancellaridae
genus
Falsilunatia
genus
Sinuber
genus
Powellisetia
genus
Rissoid
genus
Toledonia
genus
Fissurellidae
genus
Cornisepta
genus
Zeidora
genus
Pleurotomella
genus
Cylichna
genus
Iothia
genus
Microdiscula
genus
Pareuthria
genus
Turritellopsis
genus
Cerithiella
genus
Marginella
species
Anatoma euglypta
species
Trochaclis antarctica
species
Lorabela pelseneeri
species
Belalora cf striatula
species
Torellia insignis
species
Capulus sp
species
Calliotropis pelseneeri
species
Brookula cf charleenae
species
Brookula sp
species
Lissotesta sp
species
Liotella sp
species
Liotella cf endeavourensis
species
Cirsonella extrema
species
Turbinid sp
species
Turrid sp 1
species
Turrid sp 2
species
Balcis sp
species
Onoba cf gelida
species
Hemiaclis incolorata
species
Limacina helicina
species
Eatoniella cf kerguelenensis regularis
species
Cancellaridae sp
species
Falsilunatia sp
species
Sinuber multistriatum
species
Powellisetia cf deserta
species
Rissoidae sp
species
Toledonia sp 1
species
Toledonia sp 2
species
Toledonia cf elata
species
Fissurellidae sp 1
species
Fisserulidae sp 2
species
Cornisepta antarctica
species
Zeidora antarctica
species
Pleurotomella cf simillima
species
Cylichna sp
species
Iothia sp
species
Microdiscula sp
species
Pareuthria cf innocens
species
Turritellopsis gratissima
species
Cerithiella cf lineata
species
Cerithiella cf erecta
species
Fissurelidae sp 2
species
Marginella ealesae
Bivalvia
family
Nuculanidae
family
Nuculidae
family
Yoldiidae
family
Limopsidae
family
Philobryidae
family
Mytilidae
family
Limidae
family
Pectinidae
family
Propeamussiidae
family
Thyasiridae
family
Motacutidae
family
Lasaeidae
family
Cyamiidae
family
Carditidae
family
Thraciidae
family
Cuspidariidae
family
Lyonsiidae
family
Poromyidae
family
Neoleptonidae
family
Siliculidae
family
Arcidae
family
Vesicomyidae
family
Tindariidae
family
Bathyspinulidae
genus
Propeleda
genus
Ennucula
genus
Yoldiella
genus
Limopsis
genus
Philobrya
genus
Adacnarca
genus
Dacrydium
genus
Limatula
genus
Adamussium
genus
Hyalopecten
genus
Cyclochlamys
genus
Thyasira
genus
Mysella
genus
Waldo
genus
Cyamiocardium
genus
Cyclocardia
genus
Thracia
genus
Cuspidaria
genus
Myonera
genus
Lyonsia
genus
Poromya
genus
Neolepton
genus
Silicula
genus
Bathyarca
genus
Vesicomya
genus
Tindaria
genus
Bathyspinula
species
Propeleda longicaudata
species
Ennucula sp
species
Yoldiella ecaudata
species
Yoldiella sabrina
species
Yoldiella valettei
species
Yoldiella cf profundorum
species
Yoldiella oblonga
species
Yoldiella sp
species
Limopsis longipilosa
species
Limopsis knudseni
species
Philobrya sublaevis
species
Philobrya quadrata
species
Adacnarca nitens
species
Dacrydium albidum
species
Limatula Limatula sp
species
Limatula Antarctolima sp
species
Adamussium colbecki
species
Hyalopecten pudicus
species
Cyclopecten pteriola
species
Cyclochlamys gaussiana
species
Thyasira sp
species
Mysella antarctica
species
Waldo sp
species
Cyamiocardium denticulatum
species
Cyclocardia astartoides
species
Thracia meridionalis
species
Cuspidaria infelix
species
Cuspidaria minima
species
Myonera fragilissima
species
Lyonsia arcaeformis
species
Poromya antarctica
species
Neolepton sp
species
Silicula rouchi
species
Bathyarca sinuata
species
Vesicomya sirenkoi
species
Tindaria sp
species
Bathyspinula sp
genus
Cyclopecten
Scaphopoda
family
Dentaliidae
family
Pulsellidae
family
Gadilidae
genus
Dentalium
genus
Striopulsellum
genus
Cadulus
species
Dentalium majorinum
species
Striopulsellum sp
species
Cadulus sp
Camille
Moreau
British Antarctic Survey (BAS)
Marine Benthos Technician
High Cross Madingley Road
Cambridge
CB3 0ET
GB
mr.moreau.camille@gmail.com
http://www.antarctica.ac.uk/
- 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.
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).
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.
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.
BIOPEARL II
Camille
Moreau
author
This study is part of the British Antarctic Survey Polar Science for Planet Earth Programme funded by the Natural Environment Research Council.
The study area of this dataset was set in the eastern Amundsen Sea and focused on the continental shelf, upper slope and over-deepened shelf basins of the Amundsen Sea Embayment (ASE) and Pine Island Bay (PIB). This dataset presents species occurrences and species richness of the individual epibenthic sledge (EBS) deployments. PIB appears to be the third largest drainage outlet of the West Antarctic Ice Sheet (Lowe and Anderson, 2002). This area was chosen for the
BIOPEARL II cruise as it has never been subject to benthic sampling before. Furthermore it shows a unique oceanography over its continental shelf defined by the Antarctic Circumpolar Deep Water (Jenkins et al., 2004). The presence of deep basins and troughs allows the trapping of warm Circumpolar deep Water (3.5°C above the in situ freezing point) on the continental shelf of the ASE and PIB (Jacobs et al., 2011).
Vaughan (2008) assumed that these particularly warm waters are one of the reasons of the high melting rate reported at the base of the floating ice shelf in these regions. The seabed of the ASE, which is of particular interest in this benthic work, presents the marks of historic, glaciations and deglaciations, together with icebergs scouring and melt-water channels (Dowdeswell et al., 2006; Nitsche et al., 2007; Larter et al., 2009; Noormets et al., 2009). One of the other characteristics of the area is the perennial sea ice cover (Graham et al., 2010).
The Amundsen Sea is a very under sampled area on the Antarctic continental shelf, according to a recent gap analysis carried out by Griffiths et al. (2011). BIOPEARL (Biodiversity dynamics : phylogeography, evolution and radiation of life in Antarctica), a core project at the British Antarctic Survey, studied the southern Bellingshausen and eastern Amundsen seas to assess the biodiversity at local and regional scales (comparable to the BIOPEARL 2006 cruise to the Scotia Sea) and investigate the phylogenetic relationships of selected marine invertebrate taxa and their biogeography in reference to the climatological, oceanographical and geological history of the Bellingshausen/Amundsen Seas. The results are used to determine of the role of Antarctica and extreme environments in general in evolutionary innovation and generation of global biodiversity. The species presence data are added to SOMBASE (Southern Ocean Mollusc Database www.antarctica.ac.uk/sombase). SOMBASE generated initial core data system upon which SCAR’s Marine Biodiversity Information Network (SCAR-MarBIN) was built. As SCAR-MarBIN is the Antarctic Node of the international OBIS network, the SOMBASE data system was designed to comply with the Darwin Core standards. Regarding the dataset, the existing Data Toolkit from SCARMarBIN was used (http://www.scarmarbin.be/documents/SM-FATv1.zip), following the OBIS schema (http://iobis.org/data/schema-and-metadata). The dataset was uploaded in the ANTOBIS database (the geospatial component of SCAR-MarBIN), and the taxonomy was matched against the Register of Antarctic Marine Species, using the Taxon Match tool (http://www.scarmarbin.be/rams.php?p=match). The dataset meets the Darwin Core requirements and was designed around this data schema.
2013-01-09T01:28:03.831+01:00
dataset
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
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
http://ipt.biodiversity.aq/logo.do?r=amundsenseamolluscs_biopearl_ii
British Antarctic Survey
Moreau/Linse
BIOPEARL II EBS Molluscs
alcohol
89df1c06-1f0f-432a-bae7-c495837317c6/v3.xml