62f64310cee8707d9f9d5e82e266edfd English dataset Sussex IFCA Data Manager Sussex Inshore Fisheries and Conservation Authority Data Manager admin@sussex-ifca.gov.uk pointOfContact 2021-05-07 MEDIN Discovery metadata standard 2.3.8 urn:ogc:def:crs:EPSG::4326 2010 onwards, Sussex Inshore Fisheries and Conservation Authority (IFCA), Chichester Harbour, Native Oyster Ostrea edulis population monitoring 2012-08-28 publication 2013-12-11 revision SXIFCA0000001 http://www.sussex-ifca.gov.uk/ In June 2010 the Sussex Inshore Fisheries and Conservation Authority (IFCA), as the local inshore fisheries managers and as member of the Chichester Harbour Oyster Partnership Initiative (CHOPI), teamed up with the local Environmental Health teams of Chichester District Council and Havant Borough Council to gather information on the Native Oyster, Ostrea edulis, population in Chichester Harbour, West Sussex, UK. The Environmental Health team’s sample the oysters from 4/5 sites in the Harbour on a monthly basis for designated bivalve mollusc production area classification. The Sussex IFCA partnership has resulted in additional information being collected during these routine monthly sampling trips in order to monitor relative population density and some population dynamics. The information recorded includes fishing duration, number of hauls, number of oysters below 70mm ring diameter and the number of oysters greater than 70mm ring diameter, thus allowing CPUE to be calculated. In addition, every three months (monthly from November 2013) the biological height and maximum length of each oyster caught is recorded in order to gather information on the size structure of the population. In November 2010 the CHOPI group created three brood stock areas within the Harbour by relaying 2.3 tonnes of Native oysters (all greater than 70mm ring diameter) at high density (approx 30m2). It is hoped that along with monitoring the existing oyster population in the Harbour this sampling regime will provide some indication as to the success of this relaying initiative with regards to any increase in recruitment. Breeding success was monitored through the summer of 2011. In October 2013, 1.7 tonnes of native oysters were relaid at three sites. One of the sites has been monitored monthly using an underwater video and the other two sites will be/were monitored quarterly for mortality, density and breeding success in the summer. Sussex IFCA Data Manager Sussex Inshore Fisheries and Conservation Authority Data Manager admin@sussex-ifca.gov.uk originator Sussex IFCA Data Manager Sussex Inshore Fisheries and Conservation Authority Data Manager admin@sussex-ifca.gov.uk custodian quarterly Database Marine Environmental Data and Information Network Species distribution GEMET - INSPIRE themes, version 1.0 2008-01-06 revision Fish and shellfish catch statistics Shellfish abundance and biomass in water bodies SeaDataNet P021 parameter discovery vocabulary 2009-11-16 revision Fisihing Activity CHARM III 2012-04-02 creation Commercially sensitive information. Useage Restricted otherRestrictions Commercially sensitive information. Access Restricted 200 English biota Charting Progress 2 Sea Areas 2009-06-18 creation Eastern Channel ICES Rectangles 2009-05-01 creation 30E9 -0.9610 -0.8065 50.7784 50.8454 2010-06-21 2024-04-17 Sussex IFCA Data Manager Sussex Inshore Fisheries and Conservation Authority Data Manager admin@sussex-ifca.gov.uk distributor dataset MEDIN data guideline for shellfish stock assessment data 2011-02-02 publication See the referenced specification true During the monthly sampling a 70mm diameter ring gauge (the same gauge as used for compliance with the 70mm minimum legal size restrictions) was used to determine oysters with a diameter greater than, or less than 70mm. During the quarterly sampling the biological height and maximum length of each oyster caught was measured using callipers to the nearest millimetre. In addition those oysters near to 70mm in maximum length were tested to determine if they would pass through the 70mm oyster gauge. During the course of this monitoring scheme if the number and size of the oyster dredges has changed, these changes have been recorded.