725f789f-19d0-4a6f-832c-4f542c966452 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 2021-09-16 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 Images of histological sections of oocytes for the bivalve Astarte crenata and seastar Ctenodiscus crispatus from the Western Barents Sea for summer 2017. 2021-09-16 creation 2021-09-16 revision 2021-09-16 publication 2021-09-16 released 1.0 https://doi.org/10.5285/725f789f-19d0-4a6f-832c-4f542c966452 doi GB/NERC/BAS/PDC/01561 https://data.bas.ac.uk/ NE/N015894/1 award NE/P006426/1 award Please cite this item as: Reed, A., Godbold, J., Solan, M., & Grange, L. (2021). Images of histological sections of oocytes for the bivalve Astarte crenata and seastar Ctenodiscus crispatus from the Western Barents Sea for summer 2017. (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/725f789f-19d0-4a6f-832c-4f542c966452 Images of histological sections of oocytes to quantify oocyte size frequency distributions in Astarte crenata and Ctenodiscus crispatus used in the analyses by Reed et al. 2021 (Ecology and Evolution) from the Western Barents Sea during summer 2017 across a North - South transect intersecting the polar front. Supported by The Changing Arctic Ocean Seafloor (ChAOS) - how changing sea ice conditions impact biological communities, biogeochemical processes and ecosystems project (NE/N015894/1 and NE/P006426/1, 2017-2021), Natural Environment Research Council (NERC) in the UK. No credit. completed Reed, Adam University of Southampton Researcher author Godbold, Jasmin University of Southampton Researcher author Solan, Martin University of Southampton Researcher author Grange, Laura Bangor University 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 > Life History EARTH SCIENCE > Oceans > Marine Biology > Marine Invertebrates 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 functional biogeography gametogenesis interannual variability life-history reproductive plasticity theme Western Barents Sea Arctic Ocean 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 url url crossReference url url largerWorkCitation url url crossReference textTable eng utf8 biota 29.23142 30.50174 74.49999 81.28249 2017-07-22 2017-08-01 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 image/jpeg bytes 36399847834 https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=725f789f-19d0-4a6f-832c-4f542c966452 WWW:LINK-1.0-http--link Get Data Download data download dataset Methodology: Specimens of A. crenata and C. crispatus were collected in July 2017 (JR16006, RRS James Clark Ross; Hopkins 2018) using a 1.25 m Agassiz trawl (AGT) towed for 15 minutes at a ship speed of 1 knot, at three stations along the 30°E meridian across the approximate location of the Polar Front (B13, 74° 49 N (South of the polar front); B14, 76° 50 N (approximate location of the polar front); B16, 80° 06 N (North of the polar front)). Four trawls were conducted at each station to ensure sufficient spatial replication. Ctenodiscus crispatus were found at all stations, whereas A. crenata were only found at stations B13 and B16. Fauna were sieved over a 1 cm mesh, retained and fixed in 10% phosphate buffered formalin (4% formaldehyde) prior to morphological and histological examination. Images of oocytes: Images of stained slides of histological sections from individual females were captured using a Nikon D5000 digital SLR camera mounted on an Olympus (BH-2) stereomicroscope and analysed using ImageJ v 1.48. Slides were photographed at X10 magnification. Replicate photographs were taken to ensure 100 unique oocytes were measured for each female. Composite images were generated for easy analysis wherever possible. Full descriptions and additional information provided in Reed et al. 2021 Ecology and Evolution in main manuscript and supplementary information. Folder names: cruisenumber_species_site Sub-folder names: cruisenumber_species_site_spcode N.B. For species, Ast represents Astarte crenata and Ctdi represents Ctenodiscus crispatus. Site = sampling site. spcode = specimen code = individual number/ identifier. Each folder contains a number of subfolders representing the slide number from which the contained images are taken N.B. For individuals where fewer images were taken, multiple subfolders identifying 'slide number' were not required. These images are archived individually in the main specimen code folder. A small 'c' represents images that were taken as a composite image of an entire histology section (and therefore will overlap). However, owed to the fact that it was not always possible to render a completed composite image accurately, a complete composite image is not available in every folder labelled 'c'. Data collection: Instrumentation: Rotary microtome Nikon D5000 digital SLR camera Olympus BHS (BH-2) stereomicroscope Data quality: Standard protocols were followed, and data entry double checked by an independent person. asNeeded completed