409bf42e3e59238bc9cf6e74577f8fff English dataset Data Archive for Marine Species and Habitats 01752 426237 dassh.enquiries@mba.ac.uk pointOfContact 2026-03-31 MEDIN 3.1.2 EPSG Geodetic Parameter Registry 2021-01-06 revision WGS 84 1986-1999 Helford Marine Conservation Group (HMCG) Helford intertidal transect monitoring review 1986-1999 Helford Marine Conservation Group. Helford intertidal transect monitoring review Helford River Survey. Monitoring Report No. 6 Intertidal transect monitoring review incorporating data from 1986 to 1999. 2026-03-31 publication 1999-09-27 revision 1999-09-27 creation DASSHDT00000512 https://www.dassh.ac.uk/ During the 1986 to 1999 period, six intensive surveys were carried out at each of six sites covering the north and south banks of the Helford River, both sides of the Gillan inlet and an exposed headland. The results of all these studies and brief, more recent, notes, are drawn together here in this report to inform and assist in any future investigations. Helford Voluntary Marine Conservation Area coordinator@helfordvmca.co.uk owner Data Archive for Marine Species and Habitats Data Manager 01752 426237 dassh.enquiries@mba.ac.uk custodian Helford Voluntary Marine Conservation Area coordinator@helfordvmca.co.uk originator Data Archive for Marine Species and Habitats Data Manager 01752 426237 dassh.enquiries@mba.ac.uk distributor notPlanned Marine Environmental Data and Information Network MEDIN metadata record availability 2026-03-31 revision NDGO0005 NDGO0005 2026-03-31 revision Habitats and biotopes Species distribution GEMET - INSPIRE themes, version 1.0 2021-09-28 revision Habitat characterisation Habitat extent Macroalgae and seagrass taxonomy-related counts SeaDataNet Parameter Discovery Vocabulary 2021-09-28 revision otherRestrictions Open access otherRestrictions CC-BY - https://creativecommons.org/licenses/by/4.0/ English 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646 biota environment oceans -5.1497 -5.0502 50.0818 50.1069 SeaVox salt and freshwater body gazetteer 2021-01-06 creation English Channel Charting Progress 2 Sea Areas 2021-01-06 creation Western Channel and Celtic Sea ICES Rectangles 2021-01-06 creation 29E4 ICES Statistical Areas 2021-01-06 creation VIIe 1986-03-10 1999-09-27 SeaVoX Vertical Co-ordinate Coverages 2021-01-06 revision littoral Tompsett PE. 2011. Helford River Survey Monitoring Report No. 6 Intertidal transect monitoring review incorporating data from 1986 to 1999. Delimited https://doi.org/10.17031/6478a9a653f52.1 DOI link Data download link download dataset MEDIN data guideline for tidal elevation data 2018-10-08 publication See the referenced specification true 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 Not evaluated Data collected by the Helford Marine Conservation Group and summarised in review here. Transect start points were located with fixed bolts embedded in rock and sighted on known locations (no end co-ordinates). If any sensitive species or biotope records are present within this dataset, they will have been removed. If you wish to request access to sensitive species records, please contact the metadata contact. The UK Sensitive Species list has been agreed by UK statutory bodies and relevant experts. It can be viewed here https://docs.nbnatlas.org/sensitive-species-list/. Please note sensitive species lists can vary across the UK. This data has been reviewed against the DASSH Quality Assessment Criteria (http://doi.org/10.17031/64ccec5c7ba72) and been categorised as medium quality.