Fishery. Photo: DTU Aqua

User guide for the mapping tool “The seafloor footprint of Danish fishing”

How to retrieve data?

  1. Go to the tool “The seafloor footprint of Danish fishing” 

  2. Choose between Danish and English on the flag icons in the upper left corner.

  3. Select area, fishing gear, and period.

a. Are you interested in a larger area, e.g., Kattegat or the central North Sea:

  • Click on the 'Map' tab in the main menu.

  • On the next page: Select one or more ICES areas in the scrolling menu (e.g. Kattegat).

  • Select one or more fisheries (e.g. Norway lobster).

  • Select one or more years (e.g. 2019 and 2020).

  • Click on 'Submit my selection'.
    If this button is not available, one of the input fields (area, time period, or fishing gear) is missing.

b. Are you interested in a smaller area, e.g., a Natura 2000 area:

  • Click on the 'Areas of interest' tab in the main menu.

  • On the next page: Select the type of area you are interested in (e.g. 'Natura 2000-sites').

  • Select a specific area in the scrolling menu (e.g. 'Skagens Gren og Skagerrak').

  • Click on 'Select this area'.

  • Select one or more years from the scrolling menu (e.g. 2019 and 2020).

  • Select one or more fisheries (e.g. otter trawls).
    Note that the choices of fishing gear for 'Areas of interest' are less detailed (containing only the four main types of bottom trawling gear) than for the larger areas.

  • Click on 'Submit my selection'.
    If this button is not available, one of the input fields (area, time period, or fishing gear) is missing.

How is data displayed?

The mapping tool returns two types of results for the selected area, fishery, and period:

  • a map showing the spatial extent and intensity of the Danish fishing activity.
  • a table presenting detailed values of the spatial extent and intensity of the Danish fishing activity.
    Note that on the “map” page, a second table is shown that presents more coarse estimates of the spatial extent and intensity of all international fishing activity.

Detailed descriptions of how the maps and tables were generated can be found by clicking on the associated Info icons on the “Map” page. 

Description of methods, indicators, and fisheries

The mapping tool is based on methods and standard indicators of fisheries impact developed by the International Council for the Exploration of the Sea (ICES). Methods, indicators, and the included fisheries are described under the 'Information' tab in the main menu on the mapping tool's website.

Reservations and limitations

Please read about the limitations of the tool before using it

Examples

See examples of using the mapping tool

 

Contact

Ole Ritzau Eigaard
Senior Researcher
DTU Aqua
+45 35 88 34 66