Antarctic shallow suhtidal echinoderms: is the ecological success of broadcasters related to ice disturbance?

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dc.contributor.authorPalma, Alvaro T.
dc.contributor.authorPoulin, Elie
dc.contributor.authorSilva, Marcelo G.
dc.contributor.authorSan Martin, Roberto B.
dc.contributor.authorMunoz, Carlos A.
dc.contributor.authorDiaz, Angie D.
dc.date.accessioned2024-01-10T13:45:55Z
dc.date.available2024-01-10T13:45:55Z
dc.date.issued2007
dc.description.abstractOne characteristic pattern found in the marine Antarctic shallow environments is the unusually high proportion of species with protected and pelagic lecitotrophic development modes. However, species with planktotrophic development generally appear as the most conspicuous types of organisms in these environments. The Antarctic shallow benthos is considered as one of the most disturbed in the world, mainly due to the action of ice, thus one could hypothesize that such an environment should favor organisms with high dispersal capability. In order to test this general hypothesis, for two consecutive summers (2004-2005) and at two locations, we quantified the abundance and size distribution of most echinoderms present along bathymetric transects. Our results show the predominance of broadcasters (i.e., Sterechinus neumayeri and Odontaster validus) at a location where disturbances are common, while brooders (e.g., Abatus agassizii) only occurred at shallower depths of the least disturbed location. These results not only corroborate the hypothesis that local disturbance is an important factor generating these ecological patterns, but also suggest how ice-related disturbances could represent a major selecting agent behind the patterns of species diversity at an evolutionary scale in Antarctica.
dc.fechaingreso.objetodigital2024-03-21
dc.format.extent8 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1007/s00300-006-0190-x
dc.identifier.issn0722-4060
dc.identifier.urihttps://doi.org/10.1007/s00300-006-0190-x
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/79097
dc.identifier.wosidWOS:000244212700011
dc.information.autorucCiencias Biológicas;Palma A;S/I;68941
dc.issue.numero3
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final350
dc.pagina.inicio343
dc.publisherSPRINGER
dc.revistaPOLAR BIOLOGY
dc.rightsacceso restringido
dc.subjectKING-GEORGE ISLAND
dc.subjectSOUTH-SHETLAND ISLANDS
dc.subjectCOMMUNITY STRUCTURE
dc.subjectKERGUELEN ISLANDS
dc.subjectBENTHIC COMMUNITY
dc.subjectADELAIDE ISLAND
dc.subjectABATUS-CORDATUS
dc.subjectMCMURDO SOUND
dc.subjectSEA
dc.subjectREPRODUCTION
dc.subject.ods14 Life Below Water
dc.subject.ods15 Life on Land
dc.subject.odspa14 Vida submarina
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleAntarctic shallow suhtidal echinoderms: is the ecological success of broadcasters related to ice disturbance?
dc.typeartículo
dc.volumen30
sipa.codpersvinculados68941
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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