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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

  1. - 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
  1. Aplacophora sp1
    rank: species
  2. Aplacophora sp2
    rank: species
  3. Aplacophora sp3
    rank: species
  4. Aplacophora sp4
    rank: species
  5. Aplacophora sp5
    rank: species
Polyplacophora
  1. Leptochitonidae
    rank: family
  2. Leptochiton
    rank: genus
  3. Leptochiton sp
    rank: species
Monoplacophora
  1. Micropilinidae
    rank: family
  2. Micropilina
    rank: genus
  3. Micropilina sp
    rank: species
Gastropoda
  1. Scissurellidae
    rank: family
  2. Ataphridae
    rank: family
  3. Mangeliidae
    rank: family
  4. Capulidae
    rank: family
  5. Calliotropidae
    rank: family
  6. Seguenzioidea
    rank: family
  7. Turbinidae
    rank: family
  8. Turridae
    rank: family
  9. Eulimidae
    rank: family
  10. Limacinidae
    rank: family
  11. Eatoniellidae
    rank: family
  12. Cancellarioidea
    rank: family
  13. Naticidae
    rank: family
  14. Rissoidae
    rank: family
  15. Diaphinidae
    rank: family
  16. Fissurellidae
    rank: family
  17. Raphitomidae
    rank: family
  18. Cylichnidae
    rank: family
  19. Lepetidae
    rank: family
  20. Orbitestellidae
    rank: family
  21. Buccinidae
    rank: family
  22. Mathildidae
    rank: family
  23. Newtoniellidae
    rank: family
  24. Marginellidae
    rank: family
  25. Anatoma
    rank: genus
  26. Trochaclis
    rank: genus
  27. Lorabela
    rank: genus
  28. Belalora
    rank: genus
  29. Torellia
    rank: genus
  30. Capulus
    rank: genus
  31. Calliotropis
    rank: genus
  32. Brookula
    rank: genus
  33. Lissotesta
    rank: genus
  34. Liotella
    rank: genus
  35. Cirsonella
    rank: genus
  36. Balcis
    rank: genus
  37. Onoba
    rank: genus
  38. Hemiaclis
    rank: genus
  39. Limacina
    rank: genus
  40. Eatoniella
    rank: genus
  41. Cancellaridae
    rank: genus
  42. Falsilunatia
    rank: genus
  43. Sinuber
    rank: genus
  44. Powellisetia
    rank: genus
  45. Rissoid
    rank: genus
  46. Toledonia
    rank: genus
  47. Fissurellidae
    rank: genus
  48. Cornisepta
    rank: genus
  49. Zeidora
    rank: genus
  50. Pleurotomella
    rank: genus
  51. Cylichna
    rank: genus
  52. Iothia
    rank: genus
  53. Microdiscula
    rank: genus
  54. Pareuthria
    rank: genus
  55. Turritellopsis
    rank: genus
  56. Cerithiella
    rank: genus
  57. Marginella
    rank: genus
  58. Anatoma euglypta
    rank: species
  59. Trochaclis antarctica
    rank: species
  60. Lorabela pelseneeri
    rank: species
  61. Belalora cf striatula
    rank: species
  62. Torellia insignis
    rank: species
  63. Capulus sp
    rank: species
  64. Calliotropis pelseneeri
    rank: species
  65. Brookula cf charleenae
    rank: species
  66. Brookula sp
    rank: species
  67. Lissotesta sp
    rank: species
  68. Liotella sp
    rank: species
  69. Liotella cf endeavourensis
    rank: species
  70. Cirsonella extrema
    rank: species
  71. Turbinid sp
    rank: species
  72. Turrid sp 1
    rank: species
  73. Turrid sp 2
    rank: species
  74. Balcis sp
    rank: species
  75. Onoba cf gelida
    rank: species
  76. Hemiaclis incolorata
    rank: species
  77. Limacina helicina
    rank: species
  78. Eatoniella cf kerguelenensis regularis
    rank: species
  79. Cancellaridae sp
    rank: species
  80. Falsilunatia sp
    rank: species
  81. Sinuber multistriatum
    rank: species
  82. Powellisetia cf deserta
    rank: species
  83. Rissoidae sp
    rank: species
  84. Toledonia sp 1
    rank: species
  85. Toledonia sp 2
    rank: species
  86. Toledonia cf elata
    rank: species
  87. Fissurellidae sp 1
    rank: species
  88. Fisserulidae sp 2
    rank: species
  89. Cornisepta antarctica
    rank: species
  90. Zeidora antarctica
    rank: species
  91. Pleurotomella cf simillima
    rank: species
  92. Cylichna sp
    rank: species
  93. Iothia sp
    rank: species
  94. Microdiscula sp
    rank: species
  95. Pareuthria cf innocens
    rank: species
  96. Turritellopsis gratissima
    rank: species
  97. Cerithiella cf lineata
    rank: species
  98. Cerithiella cf erecta
    rank: species
  99. Fissurelidae sp 2
    rank: species
  100. Marginella ealesae
    rank: species
Bivalvia
  1. Nuculanidae
    rank: family
  2. Nuculidae
    rank: family
  3. Yoldiidae
    rank: family
  4. Limopsidae
    rank: family
  5. Philobryidae
    rank: family
  6. Mytilidae
    rank: family
  7. Limidae
    rank: family
  8. Pectinidae
    rank: family
  9. Propeamussiidae
    rank: family
  10. Thyasiridae
    rank: family
  11. Motacutidae
    rank: family
  12. Lasaeidae
    rank: family
  13. Cyamiidae
    rank: family
  14. Carditidae
    rank: family
  15. Thraciidae
    rank: family
  16. Cuspidariidae
    rank: family
  17. Lyonsiidae
    rank: family
  18. Poromyidae
    rank: family
  19. Neoleptonidae
    rank: family
  20. Siliculidae
    rank: family
  21. Arcidae
    rank: family
  22. Vesicomyidae
    rank: family
  23. Tindariidae
    rank: family
  24. Bathyspinulidae
    rank: family
  25. Propeleda
    rank: genus
  26. Ennucula
    rank: genus
  27. Yoldiella
    rank: genus
  28. Limopsis
    rank: genus
  29. Philobrya
    rank: genus
  30. Adacnarca
    rank: genus
  31. Dacrydium
    rank: genus
  32. Limatula
    rank: genus
  33. Adamussium
    rank: genus
  34. Hyalopecten
    rank: genus
  35. Cyclochlamys
    rank: genus
  36. Thyasira
    rank: genus
  37. Mysella
    rank: genus
  38. Waldo
    rank: genus
  39. Cyamiocardium
    rank: genus
  40. Cyclocardia
    rank: genus
  41. Thracia
    rank: genus
  42. Cuspidaria
    rank: genus
  43. Myonera
    rank: genus
  44. Lyonsia
    rank: genus
  45. Poromya
    rank: genus
  46. Neolepton
    rank: genus
  47. Silicula
    rank: genus
  48. Bathyarca
    rank: genus
  49. Vesicomya
    rank: genus
  50. Tindaria
    rank: genus
  51. Bathyspinula
    rank: genus
  52. Propeleda longicaudata
    rank: species
  53. Ennucula sp
    rank: species
  54. Yoldiella ecaudata
    rank: species
  55. Yoldiella sabrina
    rank: species
  56. Yoldiella valettei
    rank: species
  57. Yoldiella cf profundorum
    rank: species
  58. Yoldiella oblonga
    rank: species
  59. Yoldiella sp
    rank: species
  60. Limopsis longipilosa
    rank: species
  61. Limopsis knudseni
    rank: species
  62. Philobrya sublaevis
    rank: species
  63. Philobrya quadrata
    rank: species
  64. Adacnarca nitens
    rank: species
  65. Dacrydium albidum
    rank: species
  66. Limatula Limatula sp
    rank: species
  67. Limatula Antarctolima sp
    rank: species
  68. Adamussium colbecki
    rank: species
  69. Hyalopecten pudicus
    rank: species
  70. Cyclopecten pteriola
    rank: species
  71. Cyclochlamys gaussiana
    rank: species
  72. Thyasira sp
    rank: species
  73. Mysella antarctica
    rank: species
  74. Waldo sp
    rank: species
  75. Cyamiocardium denticulatum
    rank: species
  76. Cyclocardia astartoides
    rank: species
  77. Thracia meridionalis
    rank: species
  78. Cuspidaria infelix
    rank: species
  79. Cuspidaria minima
    rank: species
  80. Myonera fragilissima
    rank: species
  81. Lyonsia arcaeformis
    rank: species
  82. Poromya antarctica
    rank: species
  83. Neolepton sp
    rank: species
  84. Silicula rouchi
    rank: species
  85. Bathyarca sinuata
    rank: species
  86. Vesicomya sirenkoi
    rank: species
  87. Tindaria sp
    rank: species
  88. Bathyspinula sp
    rank: species
  89. Cyclopecten
    rank: genus
Scaphopoda
  1. Dentaliidae
    rank: family
  2. Pulsellidae
    rank: family
  3. Gadilidae
    rank: family
  4. Dentalium
    rank: genus
  5. Striopulsellum
    rank: genus
  6. Cadulus
    rank: genus
  7. Dentalium majorinum
    rank: species
  8. Striopulsellum sp
    rank: species
  9. Cadulus sp
    rank: species

Geographic Coverages

Amundsen Sea, Antarctica

Bibliographic Citations

  1. Brenke N (2005) An epibenthic sledge for operations on marine soft bottom and bedrock. J Mar Technol Soc 39(2):10–19 -
  2. 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 -
  3. 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. -
  4. 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. -
  5. 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 -
  6. 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 -
  7. 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 -
  8. 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. -
  9. 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 -
  10. Vaughan DG (2008) West Antarctic Ice Sheet collapse – the fall and rise of a paradigm. Clim Change 91: 65-79 -
  11. 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/
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