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Revista de biología marina y oceanografía

On-line version ISSN 0718-1957

Abstract

PALACIOS, Mauricio; CARDENAS, César A  and  NEWCOMBE, Emma M. Rocky reefs seaweeds from Fildes and Collins Bays, King George Island, Antarctica. Rev. biol. mar. oceanogr. [online]. 2015, vol.50, n.2, pp.359-366. ISSN 0718-1957.  http://dx.doi.org/10.4067/S0718-19572015000300014.

The aim of this work was to carry out a qualitative assessment of the subtidal algal assemblages occurring at Fildes and Collins Bays. We conducted subtidal sampling of seaweeds between 1 and 10 m in Collins and Fildes Bay during late summer 2009. Our results showed that Rhodophyta was the most diverse group (63% of species) followed by Phaeophyceae (33.3%) and Chlorophyta (3.7%). Differences in species richness and structure of algal assemblages were recorded between sites. Depth significantly influenced algal assemblages; however there was a significant interaction between site and depth, suggesting that the effect of depth varied among sites. Observed differences between sites may be explained by differences in ice-scour disturbance, habitat heterogeneity (availability of refugia) and identity of canopy-forming species.

Keywords : Seaweeds; Fildes and Collins Bays; species richness; Antarctica.

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