Date (Creation)

2024-02-28

Date (Revision)

2024-02-28

Date (Publication)

2024-02-28

Date (released)

2024-02-28

Edition

1.0

Unique resource identifier

https://doi.org/10.5285/c57a3261-f5f8-40e3-bcd3-c749733b3119

Codespace

doi

Unique resource identifier

GB/NERC/BAS/PDC/01822

Codespace

https://data.bas.ac.uk/

Other citation details

Please cite this item as: Neuhaus, J., Brix, S., Eichsteller, A., Taylor, J., & Linse, K. (2024). Morphometric data and morphological and in-situ images of Fissidentalium aurae sp. nov. from the abyssal Labrador Sea collected in November 2021 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/c57a3261-f5f8-40e3-bcd3-c749733b3119

Credit

No credit.

Status

Completed

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Senckenberg Society for Nature Research	Neuhaus, Jenny		Author
Senckenberg Society for Nature Research	Brix, Saskia		Author
Senckenberg Society for Nature Research	Eichsteller, Angelina		Author
Senckenberg Society for Nature Research	Taylor, James		Author
British Antarctic Survey	Linse, Katrin		Author
NERC EDS UK Polar Data Centre		PDCServiceDesk@bas.ac.uk	Point of contact

Maintenance and update frequency

As needed

Maintenance note

Completed

Global Change Master Directory (GCMD) Science Keywords

• EARTH SCIENCE > Oceans > Marine Biology > Marine Invertebrates

Theme

• Labrador Sea

• Lebensspur

• Scaphopoda

• deep sea

• ocean seafloor observation system

• species-pair-associations

Place

• Labrador Sea Basin North Atlantic Ocean

• Labrador Sea North Atlantic Ocean

GEMET - INSPIRE themes, version 1.0

• Oceanographic geographical features

Access constraints

Other restrictions

Other constraints

no limitations to public access

Access constraints

Other restrictions

Other constraints

no limitations

Use constraints

License

Other constraints

Open Government Licence v3.0

Use constraints

Other restrictions

Other constraints

This data is governed by the NERC Data Policy: https://www.ukri.org/who-we-are/nerc/our-policies-and-standards/nerc-data-policy/

Use constraints

Other restrictions

Other constraints

This data is governed by the NERC data policy and supplied under Open Government Licence v.3

Use constraints

Other restrictions

Other constraints

None.

Unique resource identifier

doi

Codespace

doi

Association Type

Cross reference

Unique resource identifier

url

Codespace

url

Association Type

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doi

Codespace

doi

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url

Codespace

url

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url

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url

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url

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url

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url

Codespace

url

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url

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url

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url

Codespace

url

Association Type

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Unique resource identifier

url

Codespace

url

Association Type

Cross reference

Spatial representation type

Text, table

Language

English

Character set

UTF8

Topic category

• Biota
• Oceans

Begin date

2021-11-21

End date

2021-11-22

Supplemental Information

It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk.

Title

European Petroleum Survey Group (EPSG) Geodetic Parameter Registry

Date (Publication)

2008-11-12

Cited responsible party

Organisation name	Individual name	Electronic mail address	Role
European Petroleum Survey Group		EPSGadministrator@iogp.org	Publisher

Unique resource identifier

urn:ogc:def:crs:EPSG::3031

Version

6.18.3

Hierarchy level

Dataset

Statement

Methodology:

The Fissidentalium aurae sp. nov were collected by an AGT with an opening frame of 3.5 m width, 0.7 m height and a 8.7 m long net of 1 cm mesh size was deployed to collect benthic megafauna. For deployment, 1.5 times of cable length to water depth was veered with 0.5 m/s while the ship steamed with one kn. After veering stopped, the vessel steamed a further 20 min with 1kn, before stopping and heaving with 0.5 m/s until the trawl left the seafloor. Heaving until on deck was done with 1.0 m/s. At arrival on deck, the catch was sieved over staggered sieves of 1 cm, 1 mm and 0.5 mm mesh size and visible fauna was removed for taxon identification, live photography, tissue sampling and fixation.

Live collected scaphopod specimens for taxonomic studies were fixed in 96% pre-cooled ethanol for molecular and morphological analysis. Most live collected scaphopods had an epizoic anthozoan attached, which were not removed to facilitate the description of the anemone. Further collected shell debris, which had no anemones attached, was preliminary fixed in 96% ethanol and then air dried.

Live images of scaphopods were taken on board of RV Sonne with a digital Canon EOS 5D Mark IV SLR camera with macro lens and two linked flashes on a Kaiser RS copy stand. Smaller macrophotography was taken under a Leitz Stemi SV 6 stereomicroscope with an attached MU1803 USB camera and AmScope software.

Scanning electron micrographs of shells and radula were made with a Hitachi TM3000 scanning electron microscope (SEM, Hitachi High-Technologies, Maidenhead, UK) at the British Antarctic Survey. Radulae were prepared by dissecting the radula sac, dissolving it in domestic bleach and cleaned for 15 s in an ultrasonic bath before SEM observation. Shells of one living individual and two debris pieces were hand-broken and investigated on the edge, inner and outer surfaces for microstructure surveys.

Shell morphometric measurements were taken from 19 individuals and shell debris using digital vernier callipers 0.01 mm. Shell length was measured as the longest length from the ventral aperture to the dorsal aperture (major axis) (Shimek and Moreno 1996), aperture width as the distance between the two widest anterior to posterior points, and aperture height as the distance between the two widest points perpendicular to the aperture width. Arc is the maximum distance to the shell from a chord running between the anterior edges of both apertures, larc is the distance from the dorsal aperture to arc. As attached anthozoans were not removed from the scaphopods, arc and larc measurements could not be taken in some specimens. Derived indices follow Shimek (1997) and Souza et al. (2020). Shell sizes were analysed in Microsoft Excel (Microsoft Corporation, 2018).

Specimens used in the present study, including type specimens, are deposited in the Senckenberg Research Institute and Museum Frankfurt, Germany (SMF) and the Natural History Museum, London (NHMUK, previous acronym BNHM).

RV Sonne had a vessel owned Ocean Floor Observation System (OFOS) with a tethered winch system of maximum 6000 m operating depth and was equipped with one HD-SDI camera, one IP video camera, one still camera (Canon EOS 5D Mark IV, 30.4 megapixels camera, 4096 x 2160 pixels, 4K), two flashlights for still camera, four underwater lights, three red point lasers 18 cm apart, and one altimeter. An ultra-short baseline system (USBL) Posidonia transponder was attached to the OFOS during the deployment, recording the positions and tow-speeds when the images were captured. The OFOS was deployed from the starboard side of the vessel and towed at a speed of 0.5 knots for 1.5 nautical miles at a minimum distance of 1.5 m above the seafloor. Still images were taken in a set 10 sec photo interval along the transect line.

The OFOS still images were assessed to count the presence of scaphopod shells visible on the substra...(8)

Data collection:

RV Sonne owned Ocean Floor Observation System (OFOS) was used.

DZMB Senckenberg am Meer AGT was used.

Microsoft 365 Excel was used for making the tables.

AmScope MU1803 was used for the stereomicoscope imagery.

BAS's Hitachi TM3000 scanning electron microscope (SEM, Hitachi High-Technologies, Maidenhead, UK).

Data quality:

Standard protocols for AGT and OFOS deployment were followed. Data entry of AGT and OFOS deployment data were linked to vessel�s positioning or USBL system.

Metadata

File identifier

c57a3261-f5f8-40e3-bcd3-c749733b3119 XML

Metadata language

English

Character set

UTF8

Hierarchy level

Dataset

Hierarchy level name

dataset

Date stamp

2024-02-28

Metadata standard name

ISO 19115 Geographic Information - Metadata

Metadata standard version

ISO 19115:2003(E)

Metadata author

Organisation name	Individual name	Electronic mail address	Role
NERC EDS UK Polar Data Centre		polardatacentre@bas.ac.uk	Point of contact