AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Undaria pinnatifida | |
Date of the first record (?) | 2012 References (not structured): Minchin D, Nunn J (2013) Rapid assessment of marinas for invasive alien species in Northern Ireland. A report undertaken for the Northern Ireland Environment Agency, Belfast. 96pp. Dan Minchin and Julia Nunn 2014. The invasive brown alga Undaria pinnatifida (Harvey) Suringar, 1873 (Laminariales: Alariaceae), spreads northwards in Europe. BioInvasions Records (2014) Volume 3, Issue 2: 57–63. Comments: Three specimens were found at the Carrickfergus Marina in August 2012. Many young plants were noted in the same marina during 2013. |
Recipient region (?) | Country: Ireland LME: 24. Celtic-Biscay Shelf LME sub-region: Celtic seas References (not structured): Minchin D, Nunn J (2013) Rapid assessment of marinas for invasive alien species in Northern Ireland. A report undertaken for the Northern Ireland Environment Agency, Belfast. 96pp. Minchin D, Nunn J (2014) The invasive brown alga Undaria pinnatifida (Harvey) Suringar, 1873 (Laminariales: Alariaceae), spreads northwards in Europe. BioInvasion Records, 3(2): 57-63. Minchin D, Nunn J, Murphy J, Edwards H, Downie A (2017) Monitoring temporal changes in the early phase of an invasion: Undaria pinnatifida (Harvey) Suringar using the abundance and distribution range method. Management of Biological Invasions 8(1): 53-60 Kraan S (2016) Undaria marching on; late arrival in the Republic of Ireland. Journal of Applied Phycology 29(2): 1-8. Comments: This alga was found attached to floating pontoons at the Carrickfergus Marina, Belfast Lough in 2012 and had become abundant by August 2013. In 2014 it was found in Carlingford Marina and in the following year in Glenarm. In July 2016 it was found on the south-east coast of Ireland at Kilmore Quay |
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Source region (?) | Not entered References (not structured): Fletcher RL and Manfredi C (1995) The occurrence of Undaria pinnatifida (Phaeophyceae, Laminariales) on the south coast of England. Botanica Marina 38: 355–358. Floc’h JY, Pajot R, Wallentinus I (1991) The Japanese brown alga Undaria pinnatifida on the coast of France andits possible establishment in European waters. Journal of Conservation and International Exploration of the Mediterranean 47: 379–390 Comments: The source region is not known but the species is found to be well distributed on the south coast of Britain and there are some isolated populations on the west coast of Britain. It formerly was known from France where it was being cultivated. The populations in Britain and Ireland almost certainly originated from this source. |
Pathway / Vector (?) | Level of certainty: Highly likely Pathway: Vessels Vector: (Highly likely) Ship’s hull References (not structured): Minchin D, Nunn J (2013) Rapid assessment of marinas for invasive alien species in Northern Ireland. A report undertaken for the Northern Ireland Environment Agency, Belfast. 96pp. Comments: The Marina in Carrickfergus is a large marina and the occurrence of this phaeophyte implicates small craft as being the responsible mode for the entry to Ireland. |
Habitat type (?) | Marina References (not structured): Minchin D, Nunn J (2013) Rapid assessment of marinas for invasive alien species in Northern Ireland. A report undertaken for the Northern Ireland Environment Agency, Belfast. 96p Minchin D, Nunn J, Murphy J, Edwards H, Downie A (2017) Monitoring temporal changes in the early phase of an invasion: Undaria pinnatifida (Harvey) Suringar using the abundance and distribution range method. Management of Biological Invasions 1(8: 53-60. Comments: Currently it is only known as being attached to floating pontoons but it is expected to expand to locally. |
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Wave exposure (?) | Sheltered References (not structured): Minchin D, Nunn J (2013) Rapid assessment of marinas for invasive alien species in Northern Ireland. A report undertaken for the Northern Ireland Environment Agency, Belfast. 96pp. Comments: Carrickfergus is marina in Belfast Lough within a sheltered site and is protected with breakwaters. |
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Salinity range (?) | Not entered | |
Temperature range (?) | Not entered |
Zonation / Substratum (?) | Benthic and Pelagic: Sublittoral within photic zone Substratum: Artificial (manmade) References (not structured): Minchin D, Nunn J (2013) Rapid assessment of marinas for invasive alien species in Northern Ireland. A report undertaken for the Northern Ireland Environment Agency, Belfast. 96pp. Comments: It is currently found close to the water surface on floating pontoons. No surveys as to its occurrence subtidally elsewhere have been conducted up to 2012. |
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Reproductive duration (?) | Unknown Comments: This alga has reproduced, the three specimens found in 2012 have provided many young plants seen during 2013. | |
Reproductive seasonality (?) | Not entered | |
Migration pattern (?) | Not entered |
Population status (?) | Common (Moderate level of certainty) References: Chan K, Schoenrock K, Power A-M (2022) New record of the invasive marine algae Undaria pinnatifida (Harvey) Suringar in eastern Ireland. Irish Naturalists’ Journal, 38: 39-42. References (not structured): Minchin D, Nunn J (2013) Rapid assessment of marinas for invasive alien species in Northern Ireland. A report undertaken for the Northern Ireland Environment Agency, Belfast. 96pp. Comments: The alga is currently known in Ireland from the Carrickfergus Marina where in 2013 the population has clearly expanded (JD Nunn, pers. comm,). The species may be expected to expand its range elsewehere to other sites in Ireland. In 2014, U.pinnatifilda was sighted further south, for the first time in the republic of Ireland in Carlingord Marina, Co.Louth, and then again in 2015, at Glenarm Marina, Co. Antrim. The second record in the republic of Ireland was in 2016 i Kilmore Quay,Co Wexford, approx.315 km from the locations in further north. Following year it was found in Dun Laoghaire Marina, Co.Dublin. In 2020, - inside Greystones Harbour, Co. Wicklow - this is the fourth record in the republic of Ireland and the sixth official record all of the Ireland, including Nothern Ireland. |
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Species status (?) | Non-indigenous species References (not structured): Williams SL, Smith JE (2007) A global review of the distribution, taxonomy and impacts of introduced seaweeds. Annual Review of Ecology, Evolution and Systematics 38: 327-359. Comments: The species is spread to many countries world-wide the phaeophyte originating in the north-west Pacific. |
Created by | Dan Minchin, 2013-10-17 |
Last update by | Dan Minchin, 2022-04-28 |