Demersal fish: Difference between revisions

Demersal fish
Layer Info
Category	Ecology
Sub-category	Fish

Revision as of 10:03, 4 October 2023

Description

Small demersal fish

Example species: Grey gurnard

Habitat: Demersal
Main role: Predator
Trophic level: 4,5

Diet: Juveniles feed on a variety of crustaceans. The diet of older specimens consists mainly of juvenile fish.

Threats: Grey gurnards are of lesser commercial importance, and are mostly caught as bycatch for other flatfish.

Large demersal fish

Example species: Thornback ray

Habitat: Demersal
Main role: Predator
Trophic level: 3,8

Diet: This ray feeds on fish and invertebrates.

Threats: Of commercial interest and near threatened according to IUCN red list. The thornback ray is often caught as bycatch by trawl and gillnets.

MSP Challenge

The small demersal fish group includes the following species: eelpout, shorthorn sculpin, Vahls’s eelpout, longspined bullhead, hooknose, common seasnail, greater weever, lesser weaver, snake blenny, striped red mullet, solenette, thickback sole, mediterranean scaldfish, argentine, dragonet, piper gurnard, red gurnard and grey gurnard.

The large demersal fish group includes the following species: rabbit fish, John Dory, sea trout, Norway red fish, Bluemouth, roundnose grenadier, starry ray, spotted ray , Common skate, cuckoo ray and thornback ray.

Demersal fish is a month-by-month, computer generated data layer following calculations made by the ecosystem simulation (EwE).

Different pressures generate by human activities (noise, bottom disturbance, surface disturbance, artificial substrate) have different, complex effects on marine species in terms of movement, survival and procreation.

Demersal fish are caught by all fishing fleets, but mostly by bottom trawl.

Information

Types

Very Low Density
Low Density
Medium Density
High Density
Very High Density

Metadata

Data Source

Demersal fish is a month-by-month, computer generated data layer following calculations made by the ecosystem simulation (EwE). For more information on how Ecopath-with-Ecosim (EwE) works, please visit our Wiki page or visit the official EwE website at https://ecopath.org.

For detailed information on how the simulation works for the North Sea Edition, we recommend further exploring our research publication called "Combining ecosystem modeling with serious gaming in support of transboundary maritime spatial planning".

Not applicable. This layer is not available in the MSP Challenge Baltic Sea Edition.

Not applicable. This layer is not available in the MSP Challenge Clyde Marine Region Edition.

Not applicable. This layer is not available in the MSP Challenge Adriatic Sea Edition.

Not applicable. This layer is not available in the MSP Challenge Eastern Mediterranean Sea Edition.

@@ Line 53: / Line 53: @@
 Demersal fish are caught by all fishing fleets, but mostly by [[Bottom Trawl Catch|bottom trawl]].
 =North Sea=
-==Types==
-* Very Low Density
-* Low Density
-* Medium Density
-* High Density
-* Very High Density
-==Metadata==
+== Information ==
-===Data Source===
-Data is calculated by Ecosystem simulation (MEL & EwE).
-===Original Title===
-Enter name of the layer at the North Sea source.
-===Description===
-Enter the description of the North Sea dataset here.
-===Creation Date===
-yyyy-mm-dd North Sea
-===Methodology===
-Enter here how the layer was prepared to be integrated into the MSP Challenge North Sea Edition.
-=Baltic Sea=
 ==Types==
 * Very Low Density
 * Low Density
@@ Line 93: / Line 66: @@
 ==Metadata==
 ===Data Source===
-Enter data source for Baltic Sea here.
+Demersal fish is a month-by-month, computer generated data layer following calculations made by the ecosystem simulation (EwE).  For more information on how Ecopath-with-Ecosim (EwE) works, please visit our [https://community.mspchallenge.info/wiki/Ecosystem_simulation_(MEL_%26_EwE) Wiki] page or visit the official EwE website at https://ecopath.org.
-===Original Title===
+For detailed information on how the simulation works for the North Sea Edition, we recommend further exploring our research publication called "[https://doi.org/10.5751/ES-11580-250221 Combining ecosystem modeling with serious gaming in support of transboundary maritime spatial planning]".
-Enter name of the layer at the Baltic Sea source.
-===Description===
+=Baltic Sea=
-Enter the description of the Baltic Sea dataset here.
+Not applicable. This layer is not available in the MSP Challenge Baltic Sea Edition.
-===Creation Date===
-yyyy-mm-dd Baltic Sea
-===Methodology===
-Enter here how the layer was prepared to be integrated into the MSP Challenge Baltic Sea Edition.
 =Clyde Marine Region=
+Not applicable. This layer is not available in the MSP Challenge Clyde Marine Region Edition.
-==Types==
-Clyde Marine Region types here
-==Metadata==
-===Data Source===
-Enter data source for Clyde Marine Region here.
-===Original Title===
-Enter name of the layer at the Clyde Marine Region source.
-===Description===
-Enter the description of the Clyde Marine Region dataset here.
-===Creation Date===
-yyyy-mm-dd Clyde Marine Region
-===Methodology===
-Enter here how the layer was prepared to be integrated into the MSP Challenge Clyde Marine Region Edition.
 =Adriatic Sea=
+Not applicable. This layer is not available in the MSP Challenge Adriatic Sea Edition.
-==Types==
-Adriatic Sea types here
-==Metadata==
-===Data Source===
-Enter data source for Adriatic Sea here.
-===Original Title===
-Enter name of the layer at the Adriatic Sea source.
-===Description===
-Enter the description of the Adriatic Sea dataset here.
-===Creation Date===
-yyyy-mm-dd Adriatic Sea
-===Methodology===
-Enter here how the layer was prepared to be integrated into the MSP Challenge Adriatic Sea Edition.
 =Eastern Mediterranean Sea=
 Not applicable. This layer is not available in the MSP Challenge Eastern Mediterranean Sea Edition.<headertabs/>