7fb2f0c1-413c-4cd6-84ab-a504bf431290 eng utf8 dataset dataset NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom polardatacentre@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact 2025-03-18 ISO 19115 Geographic Information - Metadata ISO 19115:2003(E) European Petroleum Survey Group (EPSG) Geodetic Parameter Registry 2008-11-12 publication European Petroleum Survey Group EPSGadministrator@iogp.org https://www.epsg-registry.org/ EPSG Geodetic Parameter Dataset The EPSG Geodetic Parameter Dataset is a structured dataset of Coordinate Reference Systems and Coordinate Transformations, accessible through this online registry. information publisher urn:ogc:def:crs:EPSG::3031 6.18.3 Organisms identified from OFOBS images from PS118 Profiles 6_9 (Weddell Sea) and 69 (Powell Basin), April - May 2019 2025-03-18 creation 2025-03-18 revision 2025-03-18 publication 2025-03-18 released 1.0 https://doi.org/10.5285/7fb2f0c1-413c-4cd6-84ab-a504bf431290 doi GB/NERC/BAS/PDC/02031 https://data.bas.ac.uk/ NE/S014756/1 award Please cite this item as: Khan, T.M., Griffiths, H.J., Whittle, R.J., Stephenson, N., Delahooke, K., Purser, A., Manica, A., & Mitchell, E.G. (2025). Organisms identified from OFOBS images from PS118 Profiles 6_9 (Weddell Sea) and 69 (Powell Basin), April - May 2019 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/7fb2f0c1-413c-4cd6-84ab-a504bf431290 This dataset contains the object ID, morphotaxonomic name, and approximate size (in mm) of over 70,000 organisms identified from select Ocean Floor Observation and Bathymetry System (OFOBS) images from the cruise PS118 to the Weddell Sea from April - May 2019. Images were collected for assessing epibenthic megafauna communities and establishing temporal baselines for future studies. This work has been supported by Natural Environment Research Council (NERC) Independent Research Fellowship NE/S014756/1, awarded to EM. TK is funded by a Cambridge International and Newnham College Scholarship, administered by Cambridge Trust. RW and HG are funded by UK Research and Innovation (UKRI) Future Leaders Fellowship MR/ W01002X/1 "The past, present and future of unique cold-water benthic (seafloor) ecosystems in the Southern Ocean" awarded to RW. HG is also funded by BIOPOLE, funded by the NERC, under National Capability Science Multi-Centre award scheme (NC-SM2). No credit. completed Khan, Tasnuva Ming University of Cambridge Researcher author Khan, Tasnuva Ming British Antarctic Survey Researcher author Griffiths, Huw J British Antarctic Survey Researcher author Whittle, Rowan J British Antarctic Survey Researcher author Stephenson, Nile University of Cambridge Researcher author Stephenson, Nile Cambridge Museum of Zoology Researcher author Delahooke, Kate University of Cambridge Researcher author Purser, Autun Alfred Wegener Institute for Polar and Marine Research Researcher author Manica, Andrea University of Cambridge Researcher author Mitchell, Emily G University of Cambridge Researcher author NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact asNeeded completed EARTH SCIENCE > Biosphere > Ecological Dynamics > Community Structure EARTH SCIENCE > Oceans > Marine Biology theme Global Change Master Directory (GCMD) Science Keywords 2026-01-27 publication 23 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) Greenbelt MD United States of America https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher OFOBS Photographic survey Powell Basin Weddell Sea annotations theme Powell Basin Weddell Sea place Habitats and biotopes Oceanographic geographical features theme GEMET - INSPIRE themes, version 1.0 2021-01-06 revision otherRestrictions no limitations to public access otherRestrictions no limitations license Open Government Licence v3.0 otherRestrictions This data is governed by the NERC Data Policy: https://www.ukri.org/who-we-are/nerc/our-policies-and-standards/nerc-data-policy/ otherRestrictions This data is governed by the NERC data policy and supplied under Open Government Licence v.3 otherRestrictions None. url url dependency url url crossReference textTable eng utf8 biota oceans -57.81626 -50.99663 -64.93935 -61.19232 2019-03-06 2019-03-31 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. NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information distributor text/csv bytes 7864320 http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=7fb2f0c1-413c-4cd6-84ab-a504bf431290 WWW:LINK-1.0-http--link Get Data Download data download dataset Methodology: OFOBS Data was collected on the AWI Polarstern cruise PS118 from April-May 2019 in order to assess epibenthic megafauna communities and establishing temporal baselines for comparison with future studies. OFOBS photos contain latitude, longitude, and the water depth at which the photo was taken. Each photograph had three laser dots placed in an equilateral triangle (50 cm sides) near the center of the photograph. We annotated two profiles: Profile 69_1 (Powell Basin, approx. 2000 m water depth) and Profile_6_9 (Weddell Sea, approx. 420m water depth), as these two profiles provided the maximum variation in substrate and water depth for this cruise. Photo annotations were made on Inkscape. We scaled each photo using the laser dots and used a sample box of 1.5m x 1.5 m for annotations for the Powell Basin, and 2 m x 1.5 m for the Weddell Sea. We identified, at least to class, often to genus and species levels, every macrobenthic organism visible in the photographs. Bounding boxes were ellipses. Images can be downloaded from PANGAEA. Annotations are found in the two csv files: "OFOBS_annotations_Powell_Basin.csv", "OFOBS_annotations_Weddell_Sea.csv". The headers in these files refer to: Morphotaxa - the best possible ID name for the observed individual Ids - an object ID assigned by Inkscape when annotating rx - the length of the ellipse (mm) ry - the width of the ellipse (mm) Area - the area of the ellipse (mm2), calculated using (0.5rx)*(0.5ry)*pi Image - the filename of the annotated image. These images can be downloaded from PANGAEA. These annotations were then condensed into site-by-taxa matrices in R. These can be found in the two further CSV files: "Abundance_Powell_Basin.csv", "Abundance_Weddell_Sea.csv". The headers in these files refer to: Image - the filename of the image. encrustor_percentage (%) - an estimate of area coverage of the substrate by organisms - they are likely hard parts that settle on/are attached to the seafloor - they may be disarticulated/broken portions of stylasterids, lace corals, cup corals, or urchin spines, i.e., impossible to ascertain provenance. Other columns - morphotaxa observed. Data collection: Inkscape Version 1.1 R Data quality: Annotations are made to the lowest taxonomic level possible based on the resolution of the seabed photographs. asNeeded completed