Fishing intensity Dredge 2013 v2

This dataset describes fishing intensity for Dredge mobile bottom contacting gear in 2013 based on VMS/Log book data processed by ICES Working Group on Spatial Fisheries Data (WGSFD).


ICES secretariat collected during 2017 relevant VMS and logbook data for 2009-2016 to produce, as a technical service to HELCOM, updated spatial data layers on fishing intensity/pressure. Improved data quality control checks were implemented. Submitted data across the HELCOM area have improved in quality compared to previous data 2009-2013 published in 2015. Standardized methods were used to produce the requested data layers. The code used to create the data products is available here: https://github.com/ices-eg/wg_WGSFD


For further technical information on the advice request, see http://www.ices.dk/sites/pub/Publication%20Reports/Advice/2017/Special_requests/helcom.2017.18.pdf


HELCOM secretariat did the following processing to the shapefile provided by ICES:

- Conversion to ETRS89LAEA coordinate system

- Added feature and attribute "Reported" to display unreported areas.


Dataset attribute information:


c-square: Unique reference of the c-square polygon


Year: Year of fishing activity


mid_lat: latitude coordinate of the centroid of c-square inWGS84 decimal degrees


mid_lon: longitude coordinate of the centroid of c-square inWGS84 decimal degrees


SurfaceSAR: Surface area ratio (Swept area, < 2 cm penetration depth of the gear components)


Subsurface: Subsurface area ratio (Swept area, subsurface =>2 cm penetration depth of the gear components)


totweight: Total Weight (kg)

totvalue: Total value (Euros)


Kw Fishing Hours: (Kw*h)


Fishing hours: (h)


Reported: Yes=Reported data. No= No reported data (area that does not contain effort/intensity value due to lack of reported data).


Please note that this dataset was updated (v2) in January 2019, see further details below in the lineage section.

Simple

Date (Publication)
2017-11-01
Unique resource identifier
https://metadata.helcom.fi/geonetwork/srv/eng/catalog.search#/metadata/e2f79d66-51e4-4996-baab-fc567ae79679
pointOfContact
  HELCOM Secretariat

GEMET - INSPIRE themes, version 1.0

  • Sea regions

  • Statistical units

GEMET

  • commercial fishery

  • fisheries management
Keywords

  • MADS
Keywords

  • MADS

  • Fishing intensity
Use constraints
Other restrictions
Other constraints

Use constraints: The data products derived from the advice are downloadable from HELCOM Map and Data service and can be used freely given that the source is cited. The correct data product citation is following: ICES. 2017. Spatial data layers of fishing intensity/pressure per gear type for surface and subsurface abrasion, for the years 2009 and 2016 in the HELCOM area. Available as shapefile datasets at: https://doi.org/10.17895/ices.pub.2860.

Access constraints
Other restrictions
Other constraints
Access constraints: No limitations on public access.
Spatial representation type
Vector
Metadata language
English
Topic category
  • Environment
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Begin date
2013-01-01
End date
2013-12-31
Unique resource identifier
EPSG:3035
Distribution format
  • ESRI Shapefile ( 1.0 )

OnLine resource
Download dataset ( WWW:LINK-1.0-http--link )
OnLine resource
Open in Map Viewer ( WWW:LINK-1.0-http--link )
Hierarchy level
Dataset

Conformance result

Date (Publication)
2010-12-08
Statement

ICES secretariat collected during 2017 relevant VMS and logbook data for 2009-2016 to produce, as a technical service to HELCOM, updated spatial data layers on fishing intensity/pressure. Improved data quality control checks were implemented. Submitted data across the HELCOM area have improved in quality compared to previous data 2009-2013 published in 2015. Standardized methods were used to produce the requested data layers. The code used to create the data products is available here: https://github.com/ices-eg/wg_WGSFD


HELCOM secretariat downloaded the data and did the following processing to the shapefile provided by ICES:


- Conversion to ETRS89LAEA coordinate system


- Added feature and attribute "Reported" to display unreported areas.


After processing, the datasets were published via HELCOM Map and Data service as individual map layers.


Dataset corrected in January 2019:

Upon request of the data provider outputs have been updated by ICES to better ensure vessel anonymity. Three ICES advice products (associated with sr.2018.14, sr.2017.17, and sr.2017.18) that use VMS and logbook data to describe detailed bottom trawling fishing activity have been updated to better ensure individual vessel anonymity. For these products, the level of gear grouping dis-aggregation at a c-square resolution of (0.05 degrees x 0.05 degrees) over one year were deemed too detailed by the original data provider subsequent to the release of the original advice. For these c-squares (containing 3 vessels or less) the value "-9" has been inserted to indicate that the data value for effort is missing from the c-square, but that the c-square does have a footprint from bottom trawling.
File identifier
e2f79d66-51e4-4996-baab-fc567ae79679 XML
Metadata language
English
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2021-09-09T11:59:14
pointOfContact
  HELCOM Secretariat
 
 

Overviews

Spatial extent

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S
E
W
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Keywords

GEMET - INSPIRE themes, version 1.0
Sea regions Statistical units

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