Category

Impact

Biodiversity

Abundance

Negative impacts

Indirect benefits

Benthic habitats and benthos

Increase

Increase of hard substrate habitats

Partial loss of soft sediment habitats

Habitats not damaged by trawling

Epifouling benthos

Increase

Increase

Potential introduction of invasive species

-

Fish

Increase

Increase

No indications

Reduced fishing pressure

Porpoises

-

Not established

Not established

Reduced bycatch risk

Seals

-

Increase

No indications

Reduced bycatch risk

Seabirds

Decrease

Decrease of some species, increase of others

Potential habitat loss and collision risk

Not established

Migrating birds

-

-

Possible barrier effect

-