NorthSea:Biomass/Mackerel

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Biomass/Mackerel

Layer Info
Category	Fish
Editable	No
Data source	Ecosystem simulation (EwE)
Major Impacts
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Description

Mackerel is a common name applied to a number of different species of pelagic fish, mostly, but not exclusively, from the family Scombridae. They are found in both temperate and tropical seas, mostly living along the coast or offshore in the oceanic environment.

Mackerel typically have vertical stripes on their backs and deeply forked tails. Many species are restricted in their distribution ranges, and live in separate populations or fish stocks based on geography. Some stocks migrate in large schools along the coast to suitable spawning grounds, where they spawn in fairly shallow waters. After spawning they return the way they came, in smaller schools, to suitable feeding grounds often near an area of upwelling. From there they may move offshore into deeper waters and spend the winter in relative inactivity. Other stocks migrate across oceans.

@Wikipedia

MSP Challenge

In the MSP Challenge Game the Mackerel population is part of the Ecological model, driven by Ecopath with Ecosim.

Impact from different pressures

The following table shows the impact different pressures have on the Mackerel biomass.

Pressure	Impact
Noise	1: low impact
Surface Disturbance	0: no impact
Bottom Disturbance	0: no impact

Impact from different fleets

The following table shows the t/km2 mackerel the different fleets catch.

Fleet	t/km2
Bottom Trawl	0,008
Industrial and Pelagic Trawl	0,210
Drift and Fixed Nets	0,000

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