Invasive Species Information

Page content in preparation.

The Solent, much of which is designated as a Special Area of Conservation (SAC) and Special Protection Area (SPA), is noted as a key entry point for Invasive Non Native Species (INNS) into the UK due to its high volumes of international shipping and recreational boating, both major vectors of INNS. These INNS pose a threat to the Solent’s native biodiversity and fishery industries, especially shellfisheries,due to their potential to threaten native species, habitats or whole ecosystems.The Solent had one of the largest self-sustaining stocks of native oyster (Ostrea edulis) in Europe and the increasing dominance of the invasive slipper limpet (Crepidula fornicata) is one of the reasons for its displacement. The invasive carpet sea squirt (Didemnum vexillum) is also present, and has the potential to spread outside marinas/harbours having a smothering effect, covering habitats in thick sheet-like growths and interfering with fishery and aquaculture operations (Source Natural England, 2022).

INNS and Designated Sites

The Solent Maritime Special Area of Conservation is in unfavourable condition, partly due to the presence of INNS. All relevant authorities in the Solent have a duty, under the Habitats Regulations 2017, to work towards making the site favourable, which means addressing issues that affect its condition.

Solent Target Species List

Key: M = present in marinas, S = present on shores

Back to home