a2e0aa72f288f0b23eb997be7de0497c English dataset Peter Tinsley Dorset Wildlife Trust Living Seas Manager Enquiries@derc.org.uk pointOfContact 2021-03-25 MEDIN Discovery metadata standard 2.3.8 urn:ogc:def:crs:EPSG::4326 2000 National Oceanography Centre Southampton (NOC), Poole Bay Dorset, Maerl density and distribution dive quadrat survey 2013-01-25 publication 2000-07-16 creation 2013-01-25 revision MRLRC00100000552 A qualitative pipe-dredge survey was undertaken by Ken Collins and Jenny Mallinson in 1990 as part of a proposed oil pipeline environmental impact assessment, and has formed the basis for this quantitative diving survey. Six days diving were carried out during the summer of 2000 with the help of volunteers. Since tidal currents are strong in the survey area, surveys were carried out around the slack periods during neap tides. Typically 3 pairs of divers were deployed at 100m spacing. Each pair collected all the live maerl from within two 0.5m2 quadrats at the drop point and then moved with the current some 100m to repeat the exercise. Over 110 samples were collected, dried and weighed to give a quantitative measure of the maerl density and distribution. Drift dives were also carried out to confirm the general pattern of distribution. The samples entered here record the presence of live maerl and have been provided electronically by Dr Ken Collins to Dorset Environmental Records Centre for inclusion on the Dorset Marine Biodiversity Database. Please note, these records have also been incorporated into subsequent reports written by the same author. Dr. Ken Collins National Oceanography Centre (NOC), Southampton kjc@noc.soton.ac.uk originator Carolyn Steele Dorset Environmental Record Centre Record Centre Manager c.a.steele@dorsetcc.gov.uk custodian notPlanned Database Documents Marine Environmental Data and Information Network NDGO0005 Habitats and biotopes Species distribution GEMET - INSPIRE themes, version 1.0 2008-01-06 revision Macroalgae generic abundance in water bodies Habitat extent SeaDataNet P021 parameter discovery vocabulary 2009-11-16 revision Habitats and biotopes INSPIRE THEMES 2011-02-16 creation Marine UNESCO 2003-01-01 creation Biodiversity GEMET 2011-07-06 creation Data is freely available for research or commercial use providing that the originators are acknowledged in any publications produced. otherRestrictions No restrictions to public access English biota biota Charting Progress 2 Sea Areas 2009-06-18 creation Eastern Channel Charting Progress 2 Sea Areas 2009-06-18 creation Western Channel and Celtic Sea ICES Rectangles 2009-05-01 creation 30E7 ICES Rectangles 2009-05-01 creation 30E8 -1.9367 -1.8861 50.6056 50.6570 1999-07-01 2000-07-16 Carolyn Steele Dorset Environmental Record Centre Record Centre Manager c.a.steele@dorsetcc.gov.uk distributor dataset These records all relate to 'Collins, K.J., Mallinson, J.J. (2000) Dorset Biodiversity. Maerl Survey, Poole Bay 2000' A copy of the report is held at Dorset Environmental Records Centre. A qualitative pipe-dredge survey was undertaken by Ken Collins and Jenny Mallinson in 1990 as part of a proposed oil pipeline environmental impact assessment, and has formed the basis for this quantitative diving survey. Six days diving were carried out during the summer of 2000 with the help of volunteers. Since tidal currents are strong in the survey area, surveys were carried out around the slack periods during neap tides. Typically 3 pairs of divers were deployed at 100m spacing. Each pair collected all the live maerl from within two 0.5m2 quadrats at the drop point and then moved with the current some 100m to repeat the exercise. Over 110 samples were collected, dried and weighed to give a quantitative measure of the maerl density and distribution. Drift dives were also carried out to confirm the general pattern of distribution. The samples entered here record the presence of live maerl and have been provided electronically by Dr Ken Collins to Dorset Environmental Records Centre for inclusion on the Dorset Marine Biodiversity Database. Please note, these records have also been incorporated into subsequent reports written by the same author.