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index of fishing catch from deep-sea impacting gears on the North Atlantic

Distribution of catch from deep-sea impacting fishing on the North Atlantic (18°N to 76°N and 36°E to 98°W), for the period 2010-2015. The average of yearly fishing catch for the period 2010-2015 is displayed as an index on the ATLAS grid of 25km * 25km resolution. Source data originated from the Global Fisheries Landings V4.0 database. The dataset was filtered to select only the fishing gears that have an impact on large areas of the seafloor (dredges, bottom trawls, and Danish seines). Within each cell, all remaining catch records were summed to get the total catch rate of the considered year.

This dataset was built to feed a basin-wide spatial conservation planning exercise, targeting the deep sea of the North Atlantic. The goal of this approach was to identify conservation priority areas for Vulnerable Marine Ecosystems (VMEs) and deep fish species, based on the distribution of species and habitats, human activities and current spatial management.

Simple

Date ( Publication )
2019-08-14
Identifier
FR-330-715-368-00032-IFR_MARBEC_ATLAS_Fishing_Catch
Identifier
DOI:10.12770/79f078bf-7f80-4efc-a5b4-9e01609b6a51
Credit
Horizon 2020 ATLAS project (EU)
Author
IFREMER - Combes Magali
Author
IFREMER - Vaz Sandrine
Station de Sète - Avenue Jean Monnet - CS 30171 - 34203 Sète Cedex , Sete , France
Publisher
IFREMER -
Thèmes Sextant ( Theme )
  • /Human Activities/Industrial Fishing
GEMET - INSPIRE themes, version 1.0 ( Theme )
  • Habitats and biotopes
Use limitation
CC-BY-NC-SA (Creative Commons - Attribution, Pas d’utilisation commerciale, Partage dans les mêmes conditions)
Access constraints
License
Use constraints
License
Spatial representation type
Grid
Distance
25  km
Metadata language
en
Character set
UTF8
Topic category
  • Oceans
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S
E
W
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Reference system identifier
+proj=aea +lat_1=43 +lat_2=62 +lat_0=30 +lon_0=-30 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs +ellps=WGS84 +towgs84=0,0,0
Number of dimensions
2
Dimension name
Row
Dimension size
273
Resolution
25  km
Dimension name
Column
Dimension size
491
Resolution
25  km
Cell geometry
surface
Transformation parameter availability
No
OnLine resource
IFR_MARBEC_ATLAS_FISHING_LOG_INDEX ( OGC:WMS )

Fishing catch - log index 2010-2015 - North Atlantic

Protocol
COPYFILE
Name
IFR_MARBEC_ATLAS_FISHING_LOG_INDEX
Description
Fishing catch - log index 2010-2015 - North Atlantic
OnLine resource
Watson, R. A., & Tidd, A. (2018). Mapping nearly a century and a half of global marine fishing: 1869–2015. Marine Policy, 93, 171–177. https://doi.org/10/gdsjxh ( WWW:LINK )
OnLine resource
Watson, R. A. (2017). A database of global marine commercial, small-scale, illegal and unreported fisheries catch 1950–2014. Nature Scientific Data, 4, 170039. https://doi.org/10/f92s7q ( WWW:LINK )
OnLine resource
Watson, R.A. (2019). Global Fisheries Landings V4.0. Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS). doi:10.25959/5c522cadbea37 ( WWW:LINK )
OnLine resource
DOI of the dataset ( WWW:LINK-1.0-http--metadata-URL )

DOI of the dataset

Hierarchy level
Dataset

Conformance result

Date ( Publication )
2010-12-08
Explanation
See the referenced specification
Statement
The fishing catch for industrial and non-industrial fishing (Watson, 2019) on the 2010-2015 period was used. The yearly catch values were calculated in 25km * 25 km gridsquares of the raster grid used for the ATLAS spatial prioritization, and then averaged to get the mean yearly catch for the 6 years. This yearly catch was log transformed and expressed as an index varying from 0 to 1. Source data reference: Watson, R.A. (2019). Global Fisheries Landings V4.0. Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS). doi:10.25959/5c522cadbea37
Description
The Global Fisheries Landings database displays annual catch rates (tonnes per square km of ocean) in each 30-min spatial cell of a global grid, for each fishing nation and fished taxa. Catch rate records are further disaggregated, assessing the contribution of the different fishing gears used, the different types of catch (illegal, unregulated and unreported, discards), and the scale of the fishing operations (industrial vs non-industrial) (Watson, 2017 ; Watson & Tidd, 2018).
Rationale
Global fishing catch
Description
Using the R environment, the fishing catch dataset for the 2010-2015 period was filtered to select only the fishing gears impacting the seafloor: dredges, bottom trawls, and Danish seines. For each record, the three catch values “Reported”, “IUU” and “Discards” were summed to get the total catch rate. All taxa and all nations total catch rates, for industrial and non-industrial fishing, were summed to get the yearly value of each spatial cell. The six yearly values by cell were then averaged to result in the final layer, on which one outlier point was deleted because of its high value compared to all others. The yearly average catch rate (annual tonnage per square km), displayed at a 30-min spatial resolution, was finally reprojected on the grid of 25km resolution using bilinear interpolation. Cells with NA values within the study area (no catch records attributed) were set to 0 while cells with values but out of the study zone were set to NA. For the purpose of spatial prioritization, the yearly catch was log transformed (log of catch value +1) and then rescaled in a continuous index from 0 to 1.
Rationale
filtering and extraction of catch on the ATLAS grid
File identifier
79f078bf-7f80-4efc-a5b4-9e01609b6a51 XML
Metadata language
en
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2019-11-04T21:13:19
Metadata standard name
ISO 19115:2003/19139 - SEXTANT
Metadata standard version
1.0
Author
IFREMER - Vaz Sandrine
Station de Sète - Avenue Jean Monnet - CS 30171 - 34203 Sète Cedex , Sete , France
Author
IFREMER - Combes Magali
 
 

Overviews

overview

Spatial extent

N
S
E
W
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Keywords

GEMET - INSPIRE themes, version 1.0
Habitats and biotopes
Thèmes Sextant
/Human Activities/Industrial Fishing

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