44911a04618c5cf9843e846111db68bc English dataset Polly Hadziabdic British Oceanographic Data Centre Head of Enquiries Joseph Proudman Building 6 Brownlow Street Liverpool Merseyside L3 5DA United Kingdom enquiries@bodc.ac.uk https://www.bodc.ac.uk/ pointOfContact 2025-06-06T08:18:23 MEDIN 3.1.2 urn:ogc:def:crs:EPSG::4326 OGP 224Ra and macronutrient flux dataset from incubations of UK marine sediments containing selected benthic macrofauna. University of Southampton, UK (2022) British Oceanographic Data Centre record 1048_BEFF_benthic_mesocosms_2022 2025-06-06 publication 2025-04-04 creation 2025-04-04 revision EDMED7402 http://www.bodc.ac.uk/ This dataset consists of measurements of 224Ra and macronutrients in core top water, porewaters and sediments, as well as calculated 224Ra and macronutrient fluxes (via 224Ra/228Th disequilibrium) from benthic incubations of replicate mesocosms containing selected benthic macrofauna. The experiments were conducted at the Biodiversity Ecosystem Futures Facility (BEFF lab) at the National Oceanography Centre Southampton during 2022. Sediment was collected from Rame Mud, Plymouth, and benthic organisms were collected from Rame Mud and from Loch Linhe, Scotland. For each incubation, homogenised, sieved (500 µm) sediment was added to a mesocosm to 10 cm depth, overlain by approximately 15 cm (approx. 1.3 L) seawater (0.45 µm filtered, UV sterilised, salinity 33), and left to settle for 24 hours before conducting a full water exchange. After water exchange, 1 individual of either Paraleptopentacta elongata , Edwardsia claparedii, Turritellinella tricarinata, or Amphiura chiajei was weighed and morphological measurements were taken before being added to the mesocosm. 3 replicates containing 1 individual were run for each species, in addition to 3 replicate control mesocosms containing no macrofauna. All mesocosms were continually aerated and maintained in a temperature-controlled water bath for 10 days under a 12:12h on/off light cycle. On days 4 and 8, 2.5ml of a mixed Phaeodactylum tricornutum: Tetraselmis suecica phytoplankton culture was added to all mesocosms. For a subset of mesocosms (mesocosms 14 and 15 ), daily water column nutrient samples (10 ml, 0.2 µm filtered) were taken ~5 cm below the water surface and frozen at -20°C for subsequent analysis. Experiments 1 & 2 were set up in the same manner, except that in experiment 2 only one species was included, but at higher replication (8 replicate mesocosms containing 1 individual each of E. claparedii + 1 control mesocosm). Water samples for macronutrient concentrations were analysed using a QuAAtro 39 autoanalyser (Seal Analytical) and samples for Ra activity were analysed using a Radium Delayed Coincidence Counter (RaDeCC) system.The work was conducted to quantify the influence of different species and individuals of benthic macrofauna on benthic flux, using 224Ra as a naturally occurring tracer of sediment-seawater exchange. For further information, please see the associated research paper doi: 10.1002/lno.70033 Unknown University of Southampton School of Ocean and Earth Science Unknown +44 (0)23 8059 2011 National Oceanography Centre, European Way Southampton Hampshire SO14 3ZH United Kingdom soes@noc.soton.ac.uk http://www.soes.soton.ac.uk/ owner Unknown University of Southampton School of Ocean and Earth Science Unknown +44 (0)23 8059 2011 National Oceanography Centre, European Way Southampton Hampshire SO14 3ZH United Kingdom soes@noc.soton.ac.uk http://www.soes.soton.ac.uk/ originator British Oceanographic Data Centre Director Joseph Proudman Building 6 Brownlow Street Liverpool Merseyside L3 5DA United Kingdom enquiries@bodc.ac.uk https://www.bodc.ac.uk/ custodian British Oceanographic Data Centre Director Joseph Proudman Building 6 Brownlow Street Liverpool Merseyside L3 5DA United Kingdom enquiries@bodc.ac.uk https://www.bodc.ac.uk/ distributor asNeeded Natural Environment Research Council Designated Data Centres data.gov.uk Marine Environmental Data and Information Network MEDIN metadata record availability 2012-01-11 revision Species distribution Hydrography Geology Soil Oceanographic geographical features GEMET - INSPIRE themes, version 1.0 2009-07-31 revision Other fluxes between the bed and the water column Nutrient fluxes between the bed and the water column Sedimentary structure Stable isotopes in sediment pore waters Sediment water content, porosity and surface area Stable isotopes in sediment Nutrient concentrations in sediment pore waters Zoobenthos taxonomy-related wet weight biomass per unit area of the bed SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision unknown SeaVoX Vertical Co-ordinate Coverages 2020-05-21 revision otherRestrictions No limitations apply Data are freely available to all following agreement to the terms and conditions of a Data Licence otherRestrictions Usage restrictions are specified in the terms of the licence English geoscientificInformation biota oceans -5.50 -4.1333 50.30 56.4833 SeaVoX water bodies 2024-12-11 revision Inner Seas off the West Coast of Scotland SeaVoX water bodies 2024-12-11 revision English Channel 2022-01-26 2022-08-12 Binary Delimited https://www.bodc.ac.uk/data/published_data_library/catalogue/10.5285/31f436d8-138c-c949-e063-7086abc09f40/ Published dataset - doi:10.5285/31f436d8-138c-c949-e063-7086abc09f40 Cooper I.J., Godbold J.A., Annett A. (2025). 224Ra and macronutrient fluxes from incubations of UK marine sediments containing selected benthic macrofauna. NERC EDS British Oceanographic Data Centre NOC doi: 10.5285/31f436d8-138c-c949-e063-7086abc09f40 download dataset COMMISSION REGULATION (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 publication BODC protocols are based on the Open Archival Information System (OAIS) model enabling BODC to iterate towards compliance with the on-going evolution and development of community requirements including FAIR (Findable,Accessible,Interoperable,Reusable), TRUST (Transparency, Responsibility, User community, Sustainability, Technology) and CARE (Collective Benefit, Authority to Control, Responsibility, Ethics). Data managers quality assure submissions and assemble the metadata necessary for curation. 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