7c7c3986c976b29e5683d2e7751a3f36 English dataset Data Officer Northwestern Inshore Fisheries and Conservation Authority science@nw-ifca.gov.uk pointOfContact 2019-08-22 MEDIN Discovery metadata standard 2.3.8 urn:ogc:def:crs:EPSG::4978 1998 - 2009 North Western Inshore Fisheries and Conservation Authority (NWIFCA) North Cumbria Mussel Surveys 2013-04-09 publication NWIFCA_MUS_CUM_98_09 http://www.nw-ifca.gov.uk Mussel beds are common along the Cumbrian coast, where they form on suitable hard substrate. In the Inner Solway these inter tidal beds are large enough to support a commercial fishery. However, the beds are unstable and very greatly from year to year. For 12 years Cumbria Sea Fisheries Committee commissioned yearly surveys of these beds to estimate their size and the amount of size mussel available to a fishery. This information was then used to inform management decisions. Dr Jane Lancaster Natural Power Consultants Principal Offshore Ecologist sayhello@naturalpower.com originator Data Officer Northwestern Inshore Fisheries and Conservation Authority science@nw-ifca.gov.uk custodian notPlanned Delimited Documents Geographic Information System Marine Environmental Data and Information Network NDGO0005 Habitats and biotopes Sea regions Species distribution GEMET - INSPIRE themes, version 1.0 2008-01-06 revision Zoobenthos taxonomy-related wet weight biomass per unit area of the bed Fauna abundance per unit area of the bed Zoobenthos taxonomy-related abundance per unit area of the littoral zone Shellfish abundance and biomass in water bodies Fishery characterisation Shellfish morphology, age and physiology Habitat extent SeaDataNet P021 parameter discovery vocabulary 2009-11-16 revision Data is freely available for research or commercial use providing that the originators are acknowledged in any publications produced. A charge may be applied to cover costs of compiling and sending data. otherRestrictions No restrictions to public access English biota oceans biota Charting Progress 2 Sea Areas 2009-06-18 creation Irish Sea ICES Rectangles 2009-05-01 creation 38E6 -3.4669 -3.3982 54.8015 54.8675 -3.3926 -3.3921 54.7831 54.7834 1998-08-09 2009-07-25 Data Officer Northwestern Inshore Fisheries and Conservation Authority science@nw-ifca.gov.uk distributor dataset Surveys took place yearly on beds with significant amounts of mussels present. These surveys were undertaken during the summer months at low water on a spring tide. Each bed was mapped using a GPS in order to to calculate the total area of the bed. Coverage of mussels on the bed was estimated using the "zig zag" technique where the bed is traversed in a zig zag pattern and the presence/absence of mussels recorded under each footstep. Samples of mussels were also taken from the bed. These samples were collected from a 0.1m2 quadrat then sorted and analysed in the lab. The total weight of the sample was recorded. A subsample of 100 individuals was also weighed, as was the separated size (more than 45mm) and undersize individuals. Lengths of the subsample were measured to the nearest 1mm. These were used to calculate total biomass of all mussels and all size mussels on each bed.