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dc.contributor.authorPla-Rabes, S.-
dc.contributor.authorToro, M.-
dc.contributor.authorvan der Vijver, Bart-
dc.contributor.authorRochera, C.-
dc.contributor.authorVillaescusa, Juan Antonio-
dc.contributor.authorCamacho, Antonio-
dc.contributor.authorQuesada, Antonio-
dc.date.accessioned2013-04-15T11:23:57Z-
dc.date.available2013-04-15T11:23:57Z-
dc.date.issued2013-
dc.identifier.citationAntarctic Science 25(2) : 254–269 (2013)es_ES
dc.identifier.issn0954-1020-
dc.identifier.urihttp://hdl.handle.net/10261/74333-
dc.description16 páginas, 3 tablas, 9 figuras.es_ES
dc.description.abstractDiatom assemblages from four different substrates from a stream on Byers Peninsula were analysed during the summer. The substrate type was the main factor explaining the variability in the diatom assemblages. Sandy biofilms showed a higher diversity and a greater number of endemic species. Two main hydrological regimes were observed: 1) a hydrologically unstable period with high variability in stream flow and successive freezing and thawing periods, 2) a late summer hydrologically stable period, characterized by low stream velocity and variability. The structure of the diatom communities was different between the two hydrological periods, although the substrate modulated the difference. The diatom assemblages showed low similarity among the substrates and high dominance of endemic species during early summer. The late summer community showed high dominance of motile cosmopolitan species on all substrate types. As the length of both hydrological regimes would ultimately be driven by climatic variability, the predicted climate warming could reduce overall stream diversity. Hence, subtle changes could alter the length of both hydrological periods. The relationship between diatom species association with different substrates and hydrological regimes could be relevant for tracking past climate variability using diatom palaeorecords.es_ES
dc.description.sponsorshipThis study was supported by the Spanish Ministry of Science and Technology through LIMNOPOLAR projects (REN2000-0435-ANT and CGL2005-06549-C02-01/ANT to AQ, as well as CGL2005-06549-C02-02/ANT to AC, with the last being co-financed by European FEDER funds), which are aimed at investigating aquatic ecosystem responses under different environmental conditions and to predicting their sensitivity to climate variability. This article was published thanks to the financial support given by the Ministerio de Ciencia e Innovacio´n (Spain) (CTM2011-12973-E).es_ES
dc.language.isoenges_ES
dc.publisherCambridge University Presses_ES
dc.rightsopenAccesses_ES
dc.subjectHydrologyes_ES
dc.subjectSpecies associationes_ES
dc.subjectClimate changees_ES
dc.subjectCommunity turnoveres_ES
dc.subjectDisturbancees_ES
dc.subjectEpilithones_ES
dc.titleStability and endemicity of benthic diatom assemblages from different substrates in a maritime stream on Byers Peninsula, Livingston Island, Antarctica: the role of climate variabilityes_ES
dc.typeArtículoes_ES
dc.identifier.doi10.1017/S0954102012000922-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1017/S0954102012000922es_ES
dc.identifier.e-issn1365-2079-
dc.embargo.terms2014-03-21es_ES
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