Demersal fish: Difference between revisions

Demersal fish
Layer Info
Category	Ecology
Sub-category	Fish

Revision as of 14:04, 4 October 2023

Description

Demersal fish is a type of fish that is primarily inhabits the lower depths of a body of water, particularly the ocean floor. The term "demersal fish" does not refer to a specific species, but rather it describes a group or category of fish based on their shared habitat preference.

These fish are adapted to life near or on the seabed, and are commonly found in coastal areas, continental shelves, and deep-sea environments. These types of fish share features that make them well-suited for this habitat, such as flattened bodies, strong pectoral fins, and specialized feeding structures. This group of species includes various types of flatfish, cod, flounder, skates, and many more.

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.

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 currently not integrated into the MSP Challenge Baltic Sea Edition.

Not applicable. This layer is currently not integrated into the MSP Challenge Clyde Marine Region Edition.

Not applicable. This layer is currently not integrated into the MSP Challenge Adriatic Sea Edition.

Not applicable. This layer is currently not integrated into the MSP Challenge Eastern Mediterranean Sea Edition.

@@ Line 14: / Line 14: @@
 ==Description==
+Demersal fish is a type of fish that is primarily inhabits the lower depths of a body of water, particularly the ocean floor. The term "demersal fish" does not refer to a specific species, but rather it describes a group or category of fish based on their shared habitat preference.
+These fish are adapted to life near or on the seabed, and are commonly found in coastal areas, continental shelves, and deep-sea environments. These types of fish share features that make them well-suited for this habitat, such as flattened bodies, strong pectoral fins, and specialized feeding structures. This group of species includes various types of flatfish, cod, flounder, skates, and many more.
 ==== Small demersal fish ====
@@ Line 41: / Line 43: @@
 '''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|noise]], [[Bottom Disturbace|bottom disturbance]], [[Surface Disturbance|surface disturbance]], [[Artificial Substrate|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 Catch|bottom trawl]].
 =North Sea=
@@ Line 68: / Line 60: @@
 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.
-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]".
+For detailed information on how the simulation works for the North Sea Edition, we recommend further exploring our research publication called [https://www.ecologyandsociety.org/vol25/iss2/art21/ "Combining ecosystem modeling with serious gaming in support of transboundary maritime spatial planning".]
 =Baltic Sea=
-Not applicable. This layer is not available in the MSP Challenge Baltic Sea Edition.
+Not applicable. This layer is currently not 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.
+Not applicable. This layer is currently not 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.
+Not applicable. This layer is currently not 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/>
+Not applicable. This layer is currently not integrated into the MSP Challenge Eastern Mediterranean Sea Edition.<headertabs/>