Marine invasives in the Clyde: What’s here? What’s coming our way?
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Scottish Natural Heritage Marine invasives in the Clyde: What’s here? What’s coming our way? Fiona Manson Scottish Natural Heritage
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Marine invasives in the Clyde: What’s here? What’s coming our way?. Fiona Manson Scottish Natural Heritage. Scottish Natural Heritage. Firth of Clyde: what is here?. Japanese skeleton shrimp. Carpet sea squirt. Acorn barnacle. Leathery sea squirt. Firth of Clyde: what is here?. - PowerPoint PPT Presentation
Transcript of Marine invasives in the Clyde: What’s here? What’s coming our way?
Scottish Natural Heritage
Marine invasives in the Clyde: What’s here?
What’s coming our way?
Fiona MansonScottish Natural Heritage
Scottish Natural HeritageScottish Natural Heritage
Japanese skeleton shrimp
Leathery sea squirt
Acorn barnacle
Firth of Clyde: what is here?
Carpet sea squirt
Scottish Natural Heritage Firth of Clyde: what is here?
Wireweed
Green sea fingers
Common cord grass
Scottish Natural Heritage How do they get here?
Shippingcommercial and recreational─ Hull-fouling─ Ballast water exchange
Aquaculture─ Target species─ Associated species
Photo: Kames Farm Equipment
Scottish Natural Heritage
Ecological impacts
Economic impacts
Why does it matter?
Scottish Natural Heritage
Case study: Wireweed
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Wireweed: UK distribution ??
Based on Harries et al. 2007
1973
1973 -1980
1990 - 2000
2000 - 2004
2004
1995
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Wireweed: Current distributionin Scotland
Surveys andPublicSightings
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A new arrival: Carpet sea squirtDidemnum vexillum
Scottish Natural Heritage
Impacts on biodiversity
Why does it matter?
Scottish Natural Heritage
Issues for shellfish farming: • Fouling of equipment• Fouling of stock• Impact on growth
Why does it matter?
Scottish Natural Heritage
Issues for boaters: • Hull fouling• Increased drag• Extra cleaning
Why does it matter?
Scottish Natural Heritage Where is it?
Scottish Natural HeritageScottish Natural Heritage
What should I do if I see carpet sea squirt?
Email:[email protected] (include a photograph if possible)
Phone: 01738 458641Or contact your local SNH office
www.nonnativespecies.org
Scottish Natural HeritageScottish Natural Heritage
What can we do about it?
Options:
• Do nothing
• Control / manage / best practice (learn to live with it)
• Eradication
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Holyhead Harbour – eradication
What can we do?
Scottish Natural HeritageScottish Natural Heritage Firth of Clyde: what’s coming?
Slipper limpet Chinese mitten crab
???Japanese red alga
