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Formal report series, containing results of research and monitoring carried out by Marine Scotland Science

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UK Open Government Licence (OGL)

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Crab and Lobster Fisheries in Scotland: Results of Stock Assessments 2009-2012

Scottish Marine and Freshwater Science Vol 7 No 9

This report presents summaries of historic and recent landings data and the results of stock assessments for brown crab, velvet crab and lobster, based on data collected between 2009 and 2012. A description of the biology, habitat and life history of these species is provided in Mill et al., 2009.

doi: 
10.7489/1703-1
Citation: 
Mesquita, C., Dobby, H. and McLay, H.A. (2016). Crab and Lobster Fisheries in Scotland: Results of Stock Assessments 2009-2012. Scottish Marine and Freshwater Science Vol 7 No 9: 73pp. DOI: 10.7489/1703-1

Dataset Info

These fields are compatible with DCAT, an RDF vocabulary designed to facilitate interoperability between data catalogs published on the Web.
FieldValue
Publisher
Modified Date
2017-05-09
Release Date
2016-05-09
Identifier
a97d1f14-a5e4-4aa2-80e7-b664d1e0616d
Temporal Coverage
Thursday, January 1, 2009 - 00:00 to Monday, December 31, 2012 - 00:00
License
UK Open Government Licence (OGL)
Author
Carlos Mesquita
Data Dictionary

Length frequency data obtained from market sampling and official landings data were combined to provide a raised annual landings-at-length distribution. Data were averaged over a number of years (2009-2012) and aggregated into 5 mm length classes for brown crab and lobster and 3 mm length classes for velvet crab for use in the LCA. Landings-at-length data were not available for the three species in all assessment areas. The decision-making process to select which areas had sufficient data to run stock assessments is presented in Annex A. Four parameters were defined to categorise the quality of the sampling data: number of trips/animals sampled; number of years for which data is available (maximum 4 years – 2009-2012); sampling seasonality; Length frequency distribution (LFD) shape. For each species/area, these parameters were classified in three categories (“poor”/”ok”/”good”). Stock assessments were not run for areas where one or more of the parameters was classified as “poor”.

Contact Name
Marine Scotland Science
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Public Access Level
Public