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Nineteenth International Seaweed Symposium pp 375–382Cite as

Sargassum muticum (Yendo) Fensholt in Ireland: an invasive species on the move

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Part of the book series: Developments in Applied Phycology ((DAPH,volume 2))

Abstract

The invasive marine macroalga Sargassum muticum was recorded from Kilmore Quay, Co. Waterford, for the first time in the Republic of Ireland in 2001. It was found at several other places in that year and in subsequent years. An intensive survey was carried out from April 2003 to November 2003 to map the geographical distribution and spread of this invasive brown macroalga, and data on distribution were collected in subsequent years through 2006. This study indicated that S. muticum most probably arrived in the early or mid 1990s and has spread all around the Irish coastline colonising Co. Donegal for the first time in 2006. The results indicate that spreading is facilitated by boating and perhaps via shellfish transport. A rough rate of spread of 2–3 km year−1 has been calculated within one bay and for the Irish coastline of about 54 km year−1. Observations showed that S. muticum has been found growing in seagrass beds and in rock pools, which might have serious consequences for the biodiversity in rock pools and for the protective status of seagrass habitats. It is recommended that monitoring of S. muticum should continue, especially in areas of high amenity value and economic importance in order to observe possible effects on local flora and fauna, aquaculture, the seaweed industry and tourism.

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Authors and Affiliations

  1. Irish Seaweed Centre, Martin Ryan Institute, National University of Ireland, Galway, Galway, Ireland

    Stefan Kraan

Authors
  1. Stefan Kraan
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Correspondence to Stefan Kraan .

Editor information

Editors and Affiliations

  1. School of Biological Sciences Algal Biotechnology, Murdoch University, Murdoch, WA, 6150, Australia

    Michael A. Borowitzka

  2. Acadian Seaplants Ltd., 30 Brown Avenue, Dartmouth, NS, B3B 1X8, Canada

    Alan T. Critchley

  3. Martin Ryan Institute, National University of Ireland, Galway, Ireland

    Stefan Kraan

  4. Bezhin Rosco, 28 Rue de Perharidy, 29680, Roscoff, France

    Akira Peters

  5. Department of Biology, University of Bergen, 5020, Bergen, Norway

    Kjersti Sjøtun

  6. Department of Marine Bioscience, Tokyo University of Marine Science & Technology, 4 Konan, Tokyo, Minato-ku, 108-8477, Japan

    Masahiro Notoya

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Kraan, S. (2007). Sargassum muticum (Yendo) Fensholt in Ireland: an invasive species on the move. In: Borowitzka, M.A., Critchley, A.T., Kraan, S., Peters, A., Sjøtun, K., Notoya, M. (eds) Nineteenth International Seaweed Symposium. Developments in Applied Phycology, vol 2. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-9619-8_46

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