a16aaef3-a8e6-4ec5-b6b1-f503a962ad57 English series series 2026-02-19T16:46:46 MEDIN 3.1.2 biota environment geoscientificInformation oceans Benthic primary production SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Zoobenthos generic abundance SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Sediment grain size parameters SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Habitat characterisation SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Habitats and biotopes GEMET - INSPIRE themes, version 1.0 2009-07-31 revision Geology GEMET - INSPIRE themes, version 1.0 2009-07-31 revision Species distribution GEMET - INSPIRE themes, version 1.0 2009-07-31 revision 2021-10-20T00:00:00 2024-01-27T00:00:00 -7.4547 2.0597 49.527 55.7239 7.00 134.00 TCE-4019 Marine Data Exchange 2022 - 2023, Cefas, POSEIDON, United Kingdom Benthic Survey United Kingdom Benthic Survey 2024-08-19T00:00:00 creation 2026-02-19T16:46:46 publication 2024-08-19T00:00:00 revision English POSEIDON aims to create a revised system which describes environmental risk across England and Wales, that can be applied to offshore wind (and other marine sectors) planning. It is the intention of the project that this will become integrated with marine plans and help offshore wind decisions to comprehensively factor in risks to consent and risks to the environment. This series contains benthic surveys undertaken by several organisations contracted by Cefas to contribute to Natural England’s POSEIDON project. The project was split into five Lots based on geographic regions of water around Great Britain. For each Lot several survey methods were utilised to create an environmental baseline data and updated spatial models for key species (receptors), assemblages, and a suite of ecological metrics (diversity, functional traits). Publicly Available otherRestrictions otherRestrictions The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk custodian Cefas Data Manager Cefas Data Manager datamanager@cefas.co.uk originator The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk distributor owner notPlanned https://www.marinedataexchange.co.uk/details/TCE-4019/summary A link to the web service or dataset. https://www.marinedataexchange.co.uk A link to the general host site. MEDIN data guideline for video surveys of species and benthos 2023-05-11T00:00:00 publication See the referenced specification True series The scope of works for the survey operations included several different methods of data collection: • Grabs for macrofaunal and particle size analysis (PSA); • Grabs for eDNA and OCN analysis; and • Ad-hoc Visual surveys using a Go-Pro at failed stations i.e. when grab sampling failed. The methodology for each of these aspects are described in POSEIDON Benthic Sampling Protocols Document, Version 1.0. Planning Offshore Wind Strategic Environmental Impact Decisions. POSEIDON Lot 1 comprised of 375 stations extending from offshore of Norfolk in the South to offshore of the Firth of Forth in the North (Figure 1). Stations were sampled for subsequent macrobenthic, sediment Particle Size Distribution (PSD), environmental DNA (eDNA), and sediment carbon (OCN) analyses. Stations were sampled in line with the POSEIDON Benthic Sampling Protocol V2.2. Sediment samples were collected using a 0.1m2 and later processed for sediment particle size and macrofauna (1mm sieve) following standard NMBAQC methods: samples were processed for sediment particle size (PSA) and macrofauna (1mm sieve) following standard NMBAQC methods: The Crown Estate Marine Data Advisor +44 020 7851 5000 enquiries@thecrownestate.co.uk pointOfContact