Enhancement of the benthic communities around an isolated island in the Antarctic Ocean
MetadataShow full item record
AuthorsSaiz-Salinas, J.I. (José Ignacio); Anadón, N. (Nuria); Cristobo, J. (Javier); García-Álvarez, Ó. (Óscar); García-Castrillo, G.; López, E.; Palacín, C.; Troncoso, J.S. (Jesús); Ramos, A. (Ana)
Insular marine biotas are often richer in faunal diversity than those from the open sea in the same geographical region. The existence of particular island effects were tested under polar conditions by comparing infaunal benthic assemblages on Peter I Island with those of similar latitudes in the open ocean at the Bellingshausen Sea and also from the coast of the Antarctic Peninsula. Sampling was carried out aboard the R/V Hespérides during the expedition named BENTART-2003 from 24 January to 3 March 2003. Benthic samples were collected at 18 stations ranging from 90 to 2 044 m depth, using an USNEL-type box corer (BC) dredge. Representatives of 32 higher taxa of invertebrates were found. Univariate and multivariate analyses revealed various patterns in the data. First, significant differences in polychaete abundance were detected between the stations located in the open sea and the remaining sites (island plus mainland sites). Bivalve abundances were also distinct between island and ...