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High-resolution three-dimensional images of deep-sea bamboo corals Acanella arbuscula and Keratoisis sp. collected in the Baffin Bay and Davis Strait during the CCGS Amundsen expedition in 2021

High-resolution three-dimensional images of deep-sea bamboo corals Acanella arbuscula and Keratoisis sp. collected in the Baffin Bay and Davis Strait during the CCGS Amundsen expedition in 2021
High-resolution three-dimensional images of deep-sea bamboo corals Acanella arbuscula and Keratoisis sp. collected in the Baffin Bay and Davis Strait during the CCGS Amundsen expedition in 2021
Nikon XT custom designed micro-focus computed tomography system (based on the XT H 225 ST, Nikon Tring, UK) Remotely operated submersible (Sub-Atlantic Comanche, Forum Energy TechnologiesTM, USA) WaterPikTM (Johannes & Wiebe 1970) CT Pro software (6.6/6.7; Nikon Xtek, Tring UK) Fiji/ImageJ software (v 1.53c; Schindelin et al., 2012),High-resolution X-ray computed tomography images of two deep-sea bamboo corals (Acanella arbuscula, Johnson, 1862; Keratoisis sp., Wright, 1869) collected from Baffin Bay and Davis Strait during a research expedition on board the CCGS Amundsen in July-August 2021. Corals were imaged using Micro-Focused X-Ray Computed Tomography at the Micro-Vis X-ray Imaging Centre (Southampton, UK) to non-destructively investigate their skeletal architecture, calcification strategies and growth patterns. Supported by a National Environmental Research Council Funded (INSPIRE) PhD [grant number NE/S007210/1, 2019-2027, awarded to T.J.W] and the National Research Facility for Lab X-ray CT (NXCT) [EPSRC grant number EP/T02593X/1].,Five specimens of Acanella arbuscula and four specimens of Keratoisis sp. were collected from two stations (Davis Strait; 63.34533 degrees N; 58.19571 degrees W, 1311 m, 29th July 2021, Disko Fan; 67.96631 degrees N, 59.49381 degrees W, 889 m, 2nd August 2021) using a remotely operated submersible (Sub-Atlanticµ Comanche, Forum Energy TechnologiesTM, USA) during the 2021 Amundsen expedition (AMD21 Leg 2; 15th July 2021 - 12th August 2021, CCGS Amundsen). Where possible, corals were sampled at or close to the basal internode (near the base of the specimen at the sediment surface). Any external debris and residing fauna were carefully removed from the collected colonies using tweezers before each specimen was sealed in a plastic Ziplock bag and frozen at -20 degrees Celsius. After 72 hours, the specimens were removed from the freezer and carefully cleaned with jets of re-circulated 0.45 micrometer membrane-filtered seawater (FSW) at 4 degrees Celsius using a WaterPikTM (Johannes & Wiebe 1970) before being placed back in -20 degrees Celsius. The cleaned skeleton portions were then sealed in new Ziplock plastic sample bags enclosed in Tupperware (Acanella arbuscula) or PVC vinyl tubing (Keratoisis sp.) before being transported to the University of Southampton, UK. Reconstruction of biogenic structures was achieved using a Nikon XT custom designed micro-focus computed tomography system (based on the XT H 225 ST, Nikon Tring, UK) housed within the 3D X-ray Histology (XRH) facility (www.muvis.org). Coral specimens were securely positioned vertically in Perspex holding tubes with polystyrene bungs to ensure stability during rotation and scanning. Scans were conducted at 80 KVp using a Molybdenum target. Lower resolution scans (50 micrometer) used a 12 W power, while higher resolution scans (15 micrometer) reduced it to 6.9 W for a sharper X-ray focal spot. A water tube was also scanned under the same conditions as the samples to serve as a density reference. CT Pro 3D 6.6 or 6.7 software (Nikon Xtek, Tring UK) was used for all reconstructions. Due to the limited scanner field of view, multiple overlapping scan positions were used and merged after reconstruction to remove cone beam artifacts. This merging process was facilitated by a custom macro in Fiji, allowing alignment of the scans based on the same slice. The script could also adjust image contrast to compensate for any heel effect in the absence of density calibration. The final 32-bit volume was converted to an 8-bit volume using Fiji/ImageJ (v 1.53c; Schindelin, Arganda-Carreras, Frise et al., 2012) and then converted to stacked tagged image file format (TIFF) images to reduce data size and facilitate further processing. More detailed methodology surrounding sampling and scanning can be found in Williams, Standish, Archambault et al. [in prep] and Williams, Katsamenis, Basford, et al. [in prep], respectively.,Coral specimens were securely positioned vertically in Perspex holding tubes with polystyrene bungs to ensure stability during rotation and scanning. A water tube was also scanned under the same conditions as the samples to serve as a density reference. CT Pro 3D 6.6 or 6.7 software (Nikon Xtek, Tring UK) was used for all reconstructions. During concatenation of separate scans, image contrast was adjusted to compensate for any heel effect in the absence of density calibration. Conversion to stacked tagged image file format (TIFF) images was lossless.
Natural Environment Research Council
Centre, UK Polar Data
d291cc7d-dd06-4312-b1ca-d1ea1eee24a1
Williams, Thomas J.
efc97aa3-a180-46ac-b451-15ff48860a1f
Standish, Christopher
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Godbold, Jasmin A.
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Solan, Martin
c28b294a-1db6-4677-8eab-bd8d6221fecf
Katsamenis, Orestis L.
8553e7c3-d860-4b7a-a883-abf6c0c4b438
Foster, Gavin L.
fbaa7255-7267-4443-a55e-e2a791213022
Basford, Philip J.
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Archambault, Philippe
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Centre, UK Polar Data
d291cc7d-dd06-4312-b1ca-d1ea1eee24a1
Williams, Thomas J.
efc97aa3-a180-46ac-b451-15ff48860a1f
Standish, Christopher
0b996271-da5d-4c4f-9e05-a2ec90e8561d
Godbold, Jasmin A.
df6da569-e7ea-43ca-8a95-a563829fb88a
Solan, Martin
c28b294a-1db6-4677-8eab-bd8d6221fecf
Katsamenis, Orestis L.
8553e7c3-d860-4b7a-a883-abf6c0c4b438
Foster, Gavin L.
fbaa7255-7267-4443-a55e-e2a791213022
Basford, Philip J.
efd8fbec-4a5f-4914-bf29-885b7f4677a7
Archambault, Philippe
2311de54-82ac-4fbc-be05-f546f961229c

(2023) High-resolution three-dimensional images of deep-sea bamboo corals Acanella arbuscula and Keratoisis sp. collected in the Baffin Bay and Davis Strait during the CCGS Amundsen expedition in 2021. Natural Environment Research Council doi:10.5285/76534d05-ba4e-47b7-9685-0a8c88404ef2 [Dataset]

Record type: Dataset

Abstract

Nikon XT custom designed micro-focus computed tomography system (based on the XT H 225 ST, Nikon Tring, UK) Remotely operated submersible (Sub-Atlantic Comanche, Forum Energy TechnologiesTM, USA) WaterPikTM (Johannes & Wiebe 1970) CT Pro software (6.6/6.7; Nikon Xtek, Tring UK) Fiji/ImageJ software (v 1.53c; Schindelin et al., 2012),High-resolution X-ray computed tomography images of two deep-sea bamboo corals (Acanella arbuscula, Johnson, 1862; Keratoisis sp., Wright, 1869) collected from Baffin Bay and Davis Strait during a research expedition on board the CCGS Amundsen in July-August 2021. Corals were imaged using Micro-Focused X-Ray Computed Tomography at the Micro-Vis X-ray Imaging Centre (Southampton, UK) to non-destructively investigate their skeletal architecture, calcification strategies and growth patterns. Supported by a National Environmental Research Council Funded (INSPIRE) PhD [grant number NE/S007210/1, 2019-2027, awarded to T.J.W] and the National Research Facility for Lab X-ray CT (NXCT) [EPSRC grant number EP/T02593X/1].,Five specimens of Acanella arbuscula and four specimens of Keratoisis sp. were collected from two stations (Davis Strait; 63.34533 degrees N; 58.19571 degrees W, 1311 m, 29th July 2021, Disko Fan; 67.96631 degrees N, 59.49381 degrees W, 889 m, 2nd August 2021) using a remotely operated submersible (Sub-Atlanticµ Comanche, Forum Energy TechnologiesTM, USA) during the 2021 Amundsen expedition (AMD21 Leg 2; 15th July 2021 - 12th August 2021, CCGS Amundsen). Where possible, corals were sampled at or close to the basal internode (near the base of the specimen at the sediment surface). Any external debris and residing fauna were carefully removed from the collected colonies using tweezers before each specimen was sealed in a plastic Ziplock bag and frozen at -20 degrees Celsius. After 72 hours, the specimens were removed from the freezer and carefully cleaned with jets of re-circulated 0.45 micrometer membrane-filtered seawater (FSW) at 4 degrees Celsius using a WaterPikTM (Johannes & Wiebe 1970) before being placed back in -20 degrees Celsius. The cleaned skeleton portions were then sealed in new Ziplock plastic sample bags enclosed in Tupperware (Acanella arbuscula) or PVC vinyl tubing (Keratoisis sp.) before being transported to the University of Southampton, UK. Reconstruction of biogenic structures was achieved using a Nikon XT custom designed micro-focus computed tomography system (based on the XT H 225 ST, Nikon Tring, UK) housed within the 3D X-ray Histology (XRH) facility (www.muvis.org). Coral specimens were securely positioned vertically in Perspex holding tubes with polystyrene bungs to ensure stability during rotation and scanning. Scans were conducted at 80 KVp using a Molybdenum target. Lower resolution scans (50 micrometer) used a 12 W power, while higher resolution scans (15 micrometer) reduced it to 6.9 W for a sharper X-ray focal spot. A water tube was also scanned under the same conditions as the samples to serve as a density reference. CT Pro 3D 6.6 or 6.7 software (Nikon Xtek, Tring UK) was used for all reconstructions. Due to the limited scanner field of view, multiple overlapping scan positions were used and merged after reconstruction to remove cone beam artifacts. This merging process was facilitated by a custom macro in Fiji, allowing alignment of the scans based on the same slice. The script could also adjust image contrast to compensate for any heel effect in the absence of density calibration. The final 32-bit volume was converted to an 8-bit volume using Fiji/ImageJ (v 1.53c; Schindelin, Arganda-Carreras, Frise et al., 2012) and then converted to stacked tagged image file format (TIFF) images to reduce data size and facilitate further processing. More detailed methodology surrounding sampling and scanning can be found in Williams, Standish, Archambault et al. [in prep] and Williams, Katsamenis, Basford, et al. [in prep], respectively.,Coral specimens were securely positioned vertically in Perspex holding tubes with polystyrene bungs to ensure stability during rotation and scanning. A water tube was also scanned under the same conditions as the samples to serve as a density reference. CT Pro 3D 6.6 or 6.7 software (Nikon Xtek, Tring UK) was used for all reconstructions. During concatenation of separate scans, image contrast was adjusted to compensate for any heel effect in the absence of density calibration. Conversion to stacked tagged image file format (TIFF) images was lossless.

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Published date: 11 July 2023

Identifiers

Local EPrints ID: 479397
URI: http://eprints.soton.ac.uk/id/eprint/479397
PURE UUID: acfbd736-2205-4670-b004-a5eb965ae51a
ORCID for Thomas J. Williams: ORCID iD orcid.org/0000-0002-6616-955X
ORCID for Christopher Standish: ORCID iD orcid.org/0000-0002-9726-295X
ORCID for Jasmin A. Godbold: ORCID iD orcid.org/0000-0001-5558-8188
ORCID for Martin Solan: ORCID iD orcid.org/0000-0001-9924-5574
ORCID for Orestis L. Katsamenis: ORCID iD orcid.org/0000-0003-4367-4147
ORCID for Gavin L. Foster: ORCID iD orcid.org/0000-0003-3688-9668
ORCID for Philip J. Basford: ORCID iD orcid.org/0000-0001-6058-8270

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Date deposited: 20 Jul 2023 17:43
Last modified: 11 Jun 2024 02:07

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Contributors

Contributor: UK Polar Data Centre
Contributor: Thomas J. Williams ORCID iD
Contributor: Christopher Standish ORCID iD
Contributor: Jasmin A. Godbold ORCID iD
Contributor: Martin Solan ORCID iD
Contributor: Orestis L. Katsamenis ORCID iD
Contributor: Gavin L. Foster ORCID iD
Contributor: Philip J. Basford ORCID iD
Contributor: Philippe Archambault

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