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Floating Seaweeds and Their Communities

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Part of the book series:Ecological Studies ((ECOLSTUD,volume 219))

Abstract

A wide diversity of floating seaweeds is found in temperate and subpolar regions of the world’s oceans where sea surface currents and winds determine their traveling velocities and directions. The importance of floating seaweeds as dispersal agents for associated organisms and for the algae themselves varies depending on the supply from benthic source populations and on their persistence at the sea surface. Persistence of floating algae depends on water temperature, grazing activity, epifaunal load, and, to a lesser extent, on prevailing irradiance conditions. In temperate regions, persistence of floating algae is primarily limited by warm sea surface temperatures and high densities of motile and sessile epifauna whereas at higher latitudes algae can successfully compensate grazer-induced tissue loss by continuous growth at the prevailing low water temperatures. Accordingly, floating seaweeds can bridge large oceanic distances especially at high latitudes allowing for connectivity among distant benthic populations of algae and associated rafters.

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Acknowledgements

ER and MT were supported through FONDECYT 1100749 during the preparation of this contribution. ER is grateful for a JSPS Research Fellowship from the Japan Society for the Promotion of Science for providing financial support.

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Authors and Affiliations

  1. Universidad Católica del Norte, Larrondo 1281, 1781421, Coquimbo, Chile

    Eva Rothäusler & Martin Thiel

  2. Atmosphere and Ocean Research Institute, University of Tokyo, Kashiwanoha 5-1-5, Kashiwa-shi, Chiba-ken, 277-8564, Japan

    Eva Rothäusler

  3. Alfred Wegener Institute for Polar and Marine Research, 12 01 61, 27515, Bremerhaven, Germany

    Lars Gutow

  4. Centro de Estudios Avanzados en Zonas Áridas (CEAZA), Coquimbo, Chile

    Martin Thiel

Authors
  1. Eva Rothäusler
  2. Lars Gutow
  3. Martin Thiel

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Correspondence toMartin Thiel.

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Editors and Affiliations

  1. Section Functional Ecology, Alfred Wegener Institute, Bremerhaven, Germany

    Christian Wiencke

  2. Marine Botany, University of Bremen, Bremen, Germany

    Kai Bischof

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Rothäusler, E., Gutow, L., Thiel, M. (2012). Floating Seaweeds and Their Communities. In: Wiencke, C., Bischof, K. (eds) Seaweed Biology. Ecological Studies, vol 219. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-28451-9_17

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