Bottom Disturbance

General Information

North Sea

Baltic Sea

Clyde Marine Region

Adriatic Sea

Bottom Disturbance

File:Layer Bottom Disturbance.png
Layer Info
Category	Ecology
Sub-category	Pressure

Description

Bottom Disturbance refers to the disturbance of the sea bottom or seabed as a result of human activities. This can be physical disturbance or chemical disturbance, for instance, leakages.

MSP Challenge

The Bottom Disturbance layer is calculated on a month-by-month basis considering the existing (and planned) human activities in the sea basin. The contribution from each human activity to the total Bottom Disturbance in the sea region is defined from 0 (no impact) to 1 (full impact) by expert knowledge.

Bottom disturbance is subsequently a pressure on the ecosystem. This means that this data layer is fed into the ecosystem simulation (EwE), and the ecosystem simulation will provide the users with the expected response from the species in the ecossystem.

Return to pressures.

Types

• Very Low
• Low
• Medium
• High
• Very High

Metadata

Not applicable. This layer is calculated by the system.

In the North Sea the following data layers contribute to Bottom Disturbance, their contribution (from 0 to 1) is indicated in brackets:

• Sand & Gravel Extraction (1)
• Dredging Deposit Areas (0.8)
• Wind farms during construction (0.6)
• Wave Farms during construction (0.5)
• Tidal Farms during construction (0.5)
• Pipelines during construction (0.5)
• Pipelines (0.05)
• Military Areas - Ammunition Dumps (0.4)
• Telecom Cables - during construction (0.1)
• Oil & Gas Installations (0.1)
• Anchorages (0.1)

Types

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

Metadata

Not applicable. This layer is calculated by the system.

In the Baltic Sea the following data layers contribute to Bottom Disturbance, their contribution (from 0 to 1) is indicated in brackets:

• Dredging Sites (1)
• Sand and gravel extraction (1)
• Dredging Deposit Areas (0.8)
• Energy Cables during construction (0.2)
• Oil & Gas Installations (0.5)
• Pipelines during construction (0.5)
• Wind farms during construction (0.8)
• Pipelines (0.2)

Types

• Extremely Low
• Low
• Medium
• High
• Extra High

Metadata

Not applicable. This layer is calculated by the system.

In the Clyde Marine Region the following data layers contribute to Bottom Disturbance, their contribution (from 0 to 1) is indicated in brackets:

• Dredging Sites (0.5)
• Dredging Deposit Areas (0.8)
• Shellfish farms (0.01)
• Anchorages (0.01)
• Wind farms during construction (0.6)
• Energy Cables during construction (0.1)

Not applicable.

This layer is not available in the Adriatic Sea Edition.