Passive Demersal Catch

General Information

North Sea

Baltic Sea

Clyde Marine Region

Adriatic Sea

Passive Demersal Catch

Layer Info
Category	Activities
Sub-category	Fishing

Description

The passive demersal catch is a heatmap showing where the catch of the passive demersal fleets is more dense or less dense. The fleets considered as passive demersal are the ones using fixed or drift nets on or close to the seafloor.

Source of image: fishionary.fisheries.org, accessed in April 2020.

MSP Challenge

Passive demersal catch is a month-by-month, computer-generated data layer following this fleet's fishing catch calculated by the ecosystem simulation. This fleet doesn't fish in areas that are protected against passive demersal catch.

A plan can also include a change in the fishing efforts for this fleet per EEZ. Activate the Fishing controls by ticking the appropriate checkbox under section 2b in the Plan Wizard. Subsequently, change the Fishing effort sliders under the Fishing tab of the Plan Details (maximize the Plans Monitor and select your plan)

Return to fishing.

Not applicable.

This layer is not available in the North Sea Edition.

This layer cover the Baltic Proper area only.

In the Baltic Sea, the passive demersal fleets catch mostly:

• cod (adults)
• herring

Types

• Very low density
• Low density
• Medium density
• High density
• Very high density

Metadata

Data Source

The passive demersal catch data layer comes from the EwE model developed on purpose for MSP Challenge usage based on the model by Tomczak, M.T., Niiranen, S., Hjerne, O., Blenckner, T. (2012) with the invaluable contribution of Jeroen Steenbeek, Maciej Tomczak , Giovanni Romagnoni, Rikka Puntilla, Ville Karvinen and Magali Gonçalves.

References:

Gonçalves, M. et al. (2019). Food-Web Modeling in the Maritime Spatial Planning Challenge Simulation Platform: Results from the Baltic Sea Region. In Wardaszko, M., Meijer, S., Lukosch, H., Kanegae, H., Kriz, W.C., Grzybowska-Brzezińska, M. (eds). Simulation Gaming Through Times and Disciplines - 50th International Simulation and Gaming Association Conference, ISAGA 2019, Warsaw, Poland, August 26-30, Revised Selected Papers.

Tomczak, M.T., Niiranen, S., Hjerne, O., Blenckner, T.: Ecosystem flow dynamics in the Baltic proper-using a multi-trophic dataset as a basis for food-web modelling. Ecol. Model. 230, 123–147 (2012)

Original Title

Passive demersal catch.

Description

Total catch by all passive demersal fleets.

Creation Date

Not applicable.

Methodology

Not applicable.

Not applicable.

This layer is not available in the Clyde Marine Region Edition.

Not applicable.

This layer is not available in the Adriatic Sea Edition.