Climate oscillations, range shifts and phylogeographic patterns of North Atlantic Fucaceae

Neiva, J., Serrão, E. A., Assis, J., Pearson, G. A., Coyer, J., Olsen, J., Hoarau, G. & Valero, M. 2016 Seaweed Phylogeography: Adaptation and Evolution of Seaweeds under Environmental Change. Hu, Z-M. & Fraser, C. (eds.). Dordrecht: Springer, p. 279-308 30 p. chapter 11

Research output: ScientificChapter

  • João Neiva
  • Ester A. Serrão
  • Jorge Assis
  • Gareth A. Pearson
  • James Coyer
  • Jeanine Olsen
  • Galice Hoarau
  • Myriam Valero
Members of the seaweed family Fucaceae have been recurrent models in North Atlantic phylogeographic research; numerous studies have been published since 2000, and this review synthesizes their major findings. Fucoid species
exhibited diverse responses to glacial–interglacial cycles, but evidence indicates
there were a few common refugial areas such as north-western Iberia, the Celtic Sea (Brittany/Ireland) region and the North-west Atlantic. In genetically rich refugial areas, pervasive genetic breaks confirmed presently limited gene flow between adjacent distinct genetic groups. In contrast with the maintenance of sharp genetic breaks, most species experienced extensive migration during post-glacial expansion. Poleward migrations in the North-east Atlantic followed routes along north-western Ireland and the transgressing English Channel. These patterns support the role of density-blocking in maintaining sharp genetic breaks at contact zones, and of
long-distance dispersal from range edges in mediating expansion into uninhabited
regions. The data also indicate that expansions involve mostly the genetic groups located at range edges rather than the entire species’ gene pool, both poleward during interglacials and toward warmer regions during glacial periods. Fucoid expansions
Original languageEnglish
Title of host publicationSeaweed Phylogeography
Subtitle of host publicationAdaptation and Evolution of Seaweeds under Environmental Change
EditorsZi-Min Hu, Ceridwen Fraser
Place of PublicationDordrecht
Number of pages30
ISBN (Electronic)978-94-017-7534-2
ISBN (Print)978-94-017-7532-8
StatePublished - 2016


  • North-Atlantic intertidal, Climatic refugia, COMPARATIVE PHYLOGEOGRAPHY, fucoid seaweeds, genetic diversity, latitudinal range shifts, marine introductions, glacial-interglacial cycles, ongoing climate change, pathways of range expansion, rafting, restricted dispersal

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