ATLANTIC_CH07_Product_2 / Damage to seafloor to both living and non-living components
The impact of fishing on benthic habitats has previously been investigated however; a conclusive classification of potentially sensitive habitats per gear type does not exist. Currently only qualitative estimates of fishery impact using Broad-scale habitat maps are possible. Here a sensitivity matrix using both fishing pressure (fishing Intensity) and habitat sensitivity is employed to define habitat disturbance categories. The predominant fishing activities associated with physical abrasion of the seafloor area are from bottom contacting towed fishing gear. The swept area of the aforementioned gear in contact with the seabed is generally considered a function of gear width, vessel speed and fishing effort (ICES. 2015). The varying characteristics of fishing gear, their interaction with the sea floor and species being targeted; provide scope for differing interactions with subsurface (infaunal) and surface (epifaunal) dwelling communities. An evaluation of the abrasion pressure and habitat sensitivity split into surface and subsurface pressure allows greater insight to the ecological effects. Fishing intensity was calculated annually and based on the area of sea floor being swept (or swept area ratio SAR) by gear type. Calculations are based on SAR’s of gear types per area, per year. Fishing pressure ranks and habitat sensitivity ranks obtained from WGSFD working group (01 WGSFD - Report of the Working Group on Spatial Fisheries Data 2015) can be incorporated within a GIS environment to existing ICES fisheries data to provide habitat disturbance maps (fishing pressure maps+ habitat sensitivity maps)
ICES. 2015. Report of the Working Group on Spatial Fisheries Data (WGSFD), 8–12
June 2015, ICES Headquarters, Copenhagen, Denmark. ICES CM 2015/SSGEPI:18. 150
pp.
Simple
Identification info
- Date (Creation)
- 2018-02-27
- Citation identifier
- DOI:10.12770/d3c8b0f4-855d-4006-b0f0-77d50ff66acc
- Issue identification
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Not Applicable
- Purpose
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Production of map layers showing the extent of the fisheries impact on the sea floor, To evidence the fitness for use of the current available marine datasets, as well as to point out gaps in the current Emodnet Data Collection Framework.
- Point of contact
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Organisation Individual Electronic mail address ORCID Role Marine Institute
Point of contact EMODnet Atlantic Checkpoint
Publisher Marine Institute
Author
- Spatial representation type
- Vector
- Topic category
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- Oceans
Extent
Extent
- Time period
- 2009 2015
Vertical element
- Minimum value
- 0
- Maximum value
- 1000
- Used by challenges
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Atlantic - CH07 - Fisheries Impact
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- Processing level of characteristics
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High level analyzed
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- Production mode
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Delayed
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- GEMET - INSPIRE themes, version 1.0
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Sea regions
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- Validation
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Approved
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Resource constraints
- Use constraints
- Other restrictions
- Other constraints
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This EMODnet Atlantic Checkpoint data product (the “Product”) is the result of a “challenge” stress test specified by the call for tenders No MARE/2012/11. The challenge partners ( "the producer") were commissioned to perform a number of tests to evaluate marine data according to set user requirements. This product and any resultant data and metadata produced is a consequence of these tests and provided for interest only. The Product is provided on an “as is” basis, and the producer disclaims any and all warranties, conditions, or representations (express, implied, oral or written), relating to the Product or any part thereof, including, without limitation, any and all implied warranties of quality, performance, suitability or fitness for a particular purpose to the full extent permitted by law. The Producer and the Atlantic Checkpoint partners accept no liability for loss suffered or incurred as a result of reliance on the Product or any output of its use. The Producer shall not be liable for any economic loss, loss of profit, loss of business or contract, depletion of goodwill or otherwise, in each case whether direct, or indirect or any indirect loss whatsoever (howsoever caused) including loss or damage suffered as a result of an action brought by any person which arise out of or in connection with the use of the Product or inability to use the Product
Resource constraints
- Use limitation
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Limited: The product fails in most aspects to meet the objectives but meet some.
- Use limitation
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This assessment is based on a categorical approach, as quantifiable methodologies describing fisheries impact to the seafloor are under development. A sensitivity matrix was prepared using fishing pressure and habitat sensitivity data; combining both layers into an impact layer. VMS and logbook data requested from ICES member Countries as part of OSPAR’s development of fishing intensity and pressure mapping advice in EU waters. In total 11 countries provided complete data that could be used for assessment. Impact maps can only replicate submitted data; 5 countries failed to submit data, resulting in possible underestimation of intensity where these vessels operate. There are substantial fleets of smaller vessels not equipped with VMS (<12m), or Logbooks (<10m EU fleet) which operate in the coastal zone or near shore waters that are not captured in the data requests. Further investigations are needed as many of these vessels may not employ towed bottom gears. Fishing intensity calculations require fishing hours, vessel speed and gear width in contact with the sea floor. In some cases fishing speed was not always supplied in the logbook entries; resulting in averaged supplied fishing speeds being employed. The surface (<2cm) and subsurface (>2cm) penetration depths are characterised as being equal across all substratum types; care should be taken with this assumption as actual depths may vary with substrate type. Further assessment of FAO fishing areas 21, 31, and 34 (Atlantic Northwest, Atlantic Western Central, and Atlantic Eastern Central) could not be concluded due to a lack of VMS and Log book data. Further investigations of Habitat classifications in these areas were not explored.
Associated resource
- Association Type
- Cross reference
- Initiative Type
- specification
Associated resource
- Association Type
- Cross reference
- Initiative Type
- upstreamData
Associated resource
- Association Type
- Cross reference
- Initiative Type
- upstreamData
Associated resource
- Association Type
- Cross reference
- Initiative Type
- upstreamData
Associated resource
- Association Type
- Cross reference
- Initiative Type
- upstreamData
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distribution format
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ESRI Shapefile
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- OnLine resource
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Publication Reports : Data outputs
Data linked to ICES Publication reports
- OnLine resource
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EMODnet Spatial Data Downloads
Main habitat data products available for download
- OnLine resource
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DOI of the product
DOI of the product
- OnLine resource
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CH07_product_02
Product visualization
- OnLine resource
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Download product
Download product
ATLANTIC_CH07_Product_2 / Damage to seafloor to both living and non-living components - Benthic habitat spatial extent with sensitivity matrix assigned to distribution of seabed habitats in EU waters
- Begin date
- 2006
- End date
- 2016
Vertical element
- Minimum value
- 0
- Maximum value
- 1000
ATLANTIC_CH07_Product_2 / Damage to seafloor to both living and non-living components - Fishing Intensity from bottom contacting towed fishing gear to map activity in the NE Atlantic
- Begin date
- 2006
- End date
- 2016
Vertical element
- Minimum value
- 0
- Maximum value
- 1000
ATLANTIC_CH07_Product_2 / Damage to seafloor to both living and non-living components - Area of West African Continent ending at the NE Atlantic extent at the equator
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Component is not covered because data does not exist
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This component was created to outline non EU areas present in the Atlantic, but due to fishing effort data availability and so forth; a product covering these areas cannot be created. Data extracted (CECAF (Eastern Central Atlantic) Capture Production (online query)from the Food and Agricultural Organization of the United Nations (FAO) Fisheries and Aquaculture Departments, regarding capture fisheries in the region show various EU flag states, Japan, the Russian Federation and the Ukraine actively fishing is this region. The usability of this capture quantity data is unrestricted, however visibility of VMS or Logbook data with which to form a high resolution fishing intensity analysis of the region is not available.
- Begin date
- 2006
- End date
- 2016
Vertical element
- Minimum value
- 0
- Maximum value
- 1000
ATLANTIC_CH07_Product_2 / Damage to seafloor to both living and non-living components - Area covering the Americas from Canada through the US and central America ending at the NE Atlantic extent at the equator.
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Component is not covered because data does not exist
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This component was created to outline non EU areas present in the Atlantic, but due to fishing effort data availability and so forth; a product covering these areas cannot be created. Data extracted using Global Capture Production (online query) statistics from the Food and Agricultural Organization of the United Nations (FAO) Fisheries and Aquaculture Departments, in the region show various EU flag states, Norway, the Russian Federation, Faroe Islands, Greenland, Iceland, Japan, and the Ukraine actively fishing is this region. The usability of this capture quantity data is unrestricted, however availability of VMS or Logbook data to form a high resolution fishing intensity analysis of the region is not available.
- Begin date
- 2006
- End date
- 2016
Vertical element
- Minimum value
- 0
- Maximum value
- 1000
Metadata
- Metadata identifier
- urn:uuid/d3c8b0f4-855d-4006-b0f0-77d50ff66acc
- Language
- English
- Character encoding
- UTF8
Type of resource
- Resource type
- Dataset
- Metadata linkage
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http://localhost:8080/geonetwork/srv/eng//metadata/286d8887-58a5-4562-a0b9-a69b78fced76
- Metadata linkage
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http://localhost:8080/geonetwork/srv/eng//metadata/47dea01f-5b6a-48d7-990a-606a6001cbef
- Date info (Revision)
- 2018-06-05T10:18:20Z
- Date info (Creation)
- 2005-03-31T19:13:30
Metadata standard
- Title
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ISO 19115-3 - Emodnet Checkpoint - Targeted Data Product