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Metadata: 2009 to Present Eastern Inshore Fisheries and Conservation Authority (EIFCA) Titchwell Mussel stock surveys
Abstract:
Since 2009, Eastern IFCA (and its predecessor, Eastern Sea Fisheries Joint Committee), has undertaken spring and autumn surveys to determine the biomass and size distribution of mussel, Mytilus edulis, stocks on a bed situated on Titchwell beach, North Norfolk. The stock assessment surveys are used to determine the condition of the bed and whether the bed could support a viable seed mussel fishery.
Data holder:
Eastern Inshore Fisheries and Conservation Authority
Use constraints:
There are no access restrictions.
Other details | ||
Internal code | Internally assigned metadata identifier | 5373 |
Title | The title is used to provide a brief and precise description of the dataset such as 'Date', 'Originating organisation/programme', 'Location' and 'Type of survey'. All acronyms and abbreviations should be reproduced in full. | 2009 to Present Eastern Inshore Fisheries and Conservation Authority (EIFCA) Titchwell Mussel stock surveys |
File Identifier | The File Identifier is a code, preferably a GUID, that is globally unique and remains with the same metadata record even if the record is edited or transferred between portals or tools. | da767c83503618914348688cff0bc28d |
Resource Identifier | This is the code assigned by the data owner. | EIFCATitchwellMusselSurvey |
Resource type | The resource type will likely be a dataset but could also be a series (collection of datasets with a common specification) or a service. | dataset |
Start date | This describes the date the resource starts. This may only be the year if month and day are not known | 2015-04-07 |
End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2016-11-01 |
Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | inapplicable |
Frequency of updates | This describes the frequency with which the resource is modified or updated i.e. a monitoring programme that samples once per year has a frequency that is described as 'annually'. | annually |
Abstract | The abstract provides a clear and brief statement of the content of the resource. | Since 2009, Eastern IFCA (and its predecessor, Eastern Sea Fisheries Joint Committee), has undertaken spring and autumn surveys to determine the biomass and size distribution of mussel, Mytilus edulis, stocks on a bed situated on Titchwell beach, North Norfolk. The stock assessment surveys are used to determine the condition of the bed and whether the bed could support a viable seed mussel fishery. |
Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | During February and October each year, foot surveys are conducted from the Titchwell beach at low-water. The perimeter of the bed is mapped on foot by walking around the edge of the bed with a hand-held GPS. A pair of surveyors then walk along a zig-zag transect covering the entire bed and use a Dutch wand to assess mussel coverage and patch density. The Dutch wand is a plastic ring (roughly 11cm diameter) attached to a bamboo cane that is used to assess the coverage of mussels within the bed. A plastic corer (of the same diameter as the wand) is used for collecting mussel samples from within the mussel patches. Tthe surveyors walk in a straight line along the transect line. As they walk, every two or three paces the lead surveyor places the ring of the wand on the ground. Once the ring touches the ground, the presence or absence of mussels within the ring is recorded as a hit or a miss by the second surveyor. Any mussels at all in the ring is counted as being a hit. For calculating patch density, samples of mussels are taken from within some of the rings that were determined to be hits. When a sample is collected it is taken from within the ring that produced the hit determination. A corer of the same diameter as the wand ring is used to collect the sample. To collect the sample, the wand ring is moved aside and replaced with the corer. This is gently twisted into the ground to a depth of approximately 8cm and all the mussels within the corer are then placed into a 5 litre container. Using this method, numerous small random samples will be collected from throughout the bed. The samples can be pooled from throughout the bed or divided into transects representing areas of the bed.. At the end of this distance, the samples in the container are washed using a 0.5mm sieve and stored in a labelled bag. The waypoints taken from around the perimeter of the bed are entered into MapInfo GIS, from which the area of the bed can be calculated. The transect positions taken during the survey are also entered to ensure the adequate coverage by the transects had been achieved. The hit/miss data and weights of mussels in each group from each transect are entered into an Excel spreadsheet. The total area of the bed and the diameter of the corer and ring are also entered. The spreadsheet will then automatically calculate the biomass of mussels present in the bed, the mean coverage and the mean patch density. The coverage and patch density for each individual transect will also be calculated. |
Related keywords | ||
Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environmental Data and Information Network |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Species distribution | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Shellfish abundance and biomass in water bodies | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fisihing Activity | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | environment | |
Geographical coverage | ||
North #1 | The northern-most limit of the data resource in decimal degrees | 52.9714 |
East #1 | The eastern-most limit of the data resource in decimal degrees | 0.6086 |
South #1 | The southern-most limit of the data resource in decimal degrees | 52.9714 |
West #1 | The western-most limit of the data resource in decimal degrees | 0.6086 |
North #2 | The northern-most limit of the data resource in decimal degrees | 52.9714 |
East #2 | The eastern-most limit of the data resource in decimal degrees | 0.6086 |
South #2 | The southern-most limit of the data resource in decimal degrees | 52.9714 |
West #2 | The western-most limit of the data resource in decimal degrees | 0.6086 |
North #3 | The northern-most limit of the data resource in decimal degrees | 52.9768 |
East #3 | The eastern-most limit of the data resource in decimal degrees | 0.6149 |
South #3 | The southern-most limit of the data resource in decimal degrees | 52.9746 |
West #3 | The western-most limit of the data resource in decimal degrees | 0.6055 |
North #4 | The northern-most limit of the data resource in decimal degrees | 52.9746 |
East #4 | The eastern-most limit of the data resource in decimal degrees | 0.615 |
South #4 | The southern-most limit of the data resource in decimal degrees | 52.9746 |
West #4 | The western-most limit of the data resource in decimal degrees | 0.6149 |
North #5 | The northern-most limit of the data resource in decimal degrees | 52.9746 |
East #5 | The eastern-most limit of the data resource in decimal degrees | 0.6149 |
South #5 | The southern-most limit of the data resource in decimal degrees | 52.9746 |
West #5 | The western-most limit of the data resource in decimal degrees | 0.6149 |
North #6 | The northern-most limit of the data resource in decimal degrees | 52.9746 |
East #6 | The eastern-most limit of the data resource in decimal degrees | 0.615 |
South #6 | The southern-most limit of the data resource in decimal degrees | 52.9746 |
West #6 | The western-most limit of the data resource in decimal degrees | 0.6149 |
North #7 | The northern-most limit of the data resource in decimal degrees | 52.9746 |
East #7 | The eastern-most limit of the data resource in decimal degrees | 0.615 |
South #7 | The southern-most limit of the data resource in decimal degrees | 52.9746 |
West #7 | The western-most limit of the data resource in decimal degrees | 0.6149 |
North #8 | The northern-most limit of the data resource in decimal degrees | 52.9746 |
East #8 | The eastern-most limit of the data resource in decimal degrees | 0.615 |
South #8 | The southern-most limit of the data resource in decimal degrees | 52.9746 |
West #8 | The western-most limit of the data resource in decimal degrees | 0.6149 |
Regional sea | Southern North Sea | |
38E7 | ||
Flores Sea (East Indian Archipelago) | ||
North Sea | ||
littoral | ||
30 | ||
Responsible organisations | ||
Role | The point of contact is person or organisation with responsibility for the creation and maintenance of the metadata for the resource. | pointOfContact |
Organisation name | Eastern Inshore Fisheries and Conservation Authority | |
Individual name | MEO Data lead | |
Position name | MEO Data Lead | |
Role | The distributor is the person or organisation that distributes the resource. | distributor |
Organisation name | Eastern Inshore Fisheries and Conservation Authority | |
Individual name | MEO Data lead | |
Position name | MEO Data Lead | |
Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
Organisation name | Eastern Inshore Fisheries and Conservation Authority | |
Individual name | MEO Data lead | |
Position name | MEO Data Lead | |
Role | The custodian is the person or organisation that accepts responsibility for the resource and ensures appropriate care and maintenance. If a dataset has been lodged with a Data Archive Centre for maintenance then this organisation is be entered here. | custodian |
Organisation name | Eastern Inshore Fisheries and Conservation Authority | |
Individual name | MEO Data lead | |
Position name | MEO Data Lead | |
Resource locators | ||
Locator URL | Web address (URL) that links to the resource | http://www.eastern-ifca.gov.uk/ |
Dataset constraints | ||
20 Limitations on Public Access - Access constraints | otherRestrictions | |
20 Limitations on Public Access - Other constraints | This states any limitations on access to the data and uses free text. | There are no access restrictions. |
21 Conditions for Access and Use - Use limitation | This states any constraints on use of the data. Multiple conditions can be recorded for different parts of the data resource. If no conditions apply, then `No condtions apply` is recorded. This uses free text. | Data is freely available for research or commercial use providing that the originators are acknowledged in any publications produced. Charts are not to be used for navigation. |
Available data formats | ||
Data format | Format in which digital data can be provided for transfer | Database |
Version info | ||
Date of publication | The publication date of the resource or if previously unpublished the date that the resource was made publicly available via the MEDIN network. | 2015-04-07 |
Date of last revision | The most recent date that the resource was revised. | 2015-04-07 |
Date of creation | The date that the resource was created. | 2015-04-07 |
Harvest date | The date which this record has been (re)harvested from the provider. | 2024-04-21 |
Metadata date | The date when the content of this metadata record was last updated. | 2016-11-15 |
Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN Discovery metadata standard |
Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | 2.3.8 |