Introduction of light or shading

Introduction of light on structures may disorientate, repel or attract species (affecting e.g. migration routes), increase algal growth, change communities or species present.  Shading from structures may reduce growth, feeding or change communities/species present.

Change in incident light via anthropogenic means.
Infrastructure such as new promenade or pier lighting, lighting on oil & gas facilities, fish farms, construction of jetties or other artificial structures or vessels, removal of dense kelp canopy will introduce increased light. Includes most nighttime vessel activity.
The introduction of light is unlikely to be relevant for most benthic invertebrates, except where it is possible to interfere with spawning cues, or where dense kelp canopy is removed.

Faroe Shetland Channel

The tables in this section reflect the output of the workshop (October 2019) when the pressures from human activities were assessed for the period 2014 to 2018 for the region. The summary text below the tables elaborates on some of the points that were made at the workshop.
This pressure assessment uses the FeAST classification which includes two abrasion pressures: surface abrasion & sub-surface abrasion. Some expert groups combined these as a single pressure "surface & sub-surface abrasion" whilst others focussed on using surface abrasion alone, hence there is a slight difference in handling for some regions.
The ranking of the pressures in terms of impact is a relative exercise within each region, and is not a statement of their absolute impact. Detailed comparison between regions on the basis of these relative pressure assessments is therefore not advisable.

Main pressures identified

Faroe Shetland Channel