Polar Biology

, Volume 31, Issue 1, pp 89–100 | Cite as

Spatial and temporal variability of the benthic assemblages associated to the holdfasts of the kelp Macrocystis pyrifera in the Straits of Magellan, Chile

  • Carlos Ríos
  • Wolf E. Arntz
  • Dieter Gerdes
  • Erika Mutschke
  • Américo Montiel
Original Paper

Abstract

Macrocystis pyrifera (L.) C. Agardh is a characteristic macroalga in the Magellan region covering almost 30% of the shallow coastal waters. The focus of this study was to analyse the spatial and seasonal patterns in macrofauna communities associated to the holdfasts of Macrocystis pyrifera at two study sites in the Straits of Magellan, South Chile. In total, 114 species from 10 major taxa were isolated from the holdfasts. MDS clearly separated the holdfast fauna collected in different seasons, with autumn and winter collections being richer in terms of species richness and abundance as compared to the spring and summer situation. MDS also clearly separated the holdfast associated faunas of the two study sites, Bahía Laredo and Fuerte Bulnes. The community structure and species composition of the associated macro-invertebrates and vertebrates appeared rather heterogeneous, probably due to the extremely heterogeneous environmental conditions along the entire coastline of the Subantarctic Magellan region.

Keywords

Macrofauna Kelp holdfasts Straits of Magellan Chile Biodiversity 

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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Carlos Ríos
    • 1
  • Wolf E. Arntz
    • 2
  • Dieter Gerdes
    • 2
  • Erika Mutschke
    • 3
  • Américo Montiel
    • 3
  1. 1.Dirección de Programas AntárticosUniversidad de MagallanesPunta ArenasChile
  2. 2.Alfred Wegener Institute for Polar- and Marine ResearchBremerhavenGermany
  3. 3.Laboratorio de Hidrobiología, Instituto de la PatagoniaUniversidad de MagallanesPunta ArenasChile

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