Preliminary paleolimnological data from a Santiago island coastal lagoon, Galapagos Archipelago, Ecuador

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dc.contributor.authorNatt, Aen_AU
dc.contributor.authorHaberle, SGen_AU
dc.contributor.authorJacobsen, GEen_AU
dc.contributor.authorTibby, Jen_AU
dc.date.accessioned2009-12-04en_AU
dc.date.accessioned2010-04-30T04:57:36Zen_AU
dc.date.available2009-12-04en_AU
dc.date.available2010-04-30T04:57:36Zen_AU
dc.date.issued2007-11en_AU
dc.date.statistics2007-11en_AU
dc.description.abstractThe Galapagos Islands are arguably the most famous islands in the world. This fame derives from the Islands’ rich biological history and unique locality that provides opportunities for research in the fields of evolution, geomorphology and biodiversity. Furthermore, the unique geographical location of the archipelago has in the past and continues to provide excellent potential for palaeoclimatology, palaeolimnology and palaeoecology. In particular the location of the islands within what is essentially the heart of the ENSO region ensures the islands are frequently influenced by El Niño driven precipitation events. These El Niño precipitation events are extremely influential, given that the islands location within the Pacific Equatorial Dry Zone (PEDZ) ensures the islands have a semi-arid climate (<500 m above sea level). Due to the influential nature of El Niño variability in the Galapagos, the numerous saline to hyper-saline coastal lagoons throughout the archipelago have the potential of recording past hydrological changes associated with El Niño-related climate variability. Furthermore, the influence of humans via the introduction of goats and burning may have influenced erosion rates in the catchment. Preliminary multi-proxy analysis of a laminated sediment sequence raised from the Espumilla lagoon system, Santiago Island, will be presented. The data includes a 14C AMS radiocarbon chronology, fossil diatom analysis, magnetic susceptibility and 2mm resolution ITRAX x-ray fluorescence geochemistry. The preliminary results show that the sediment core raised from this site has vast potential for reconstructing El Niño driven rainfall over the past 2500 calibrated years BP, while at the same time revealing a detailed and interesting history of the evolution of this ecologically significant lagoon system.en_AU
dc.description.sponsorshipAustralian Institute of Nuclear Science and Engineering (AINSE); Vacuum Society of Australia (VSA); Australian Research Council (ARC); Australian Research Network for Advanced Materials (ARNAM); JAVAC; Nanotechnology Network; ThermoFisher Scientificen_AU
dc.identifier.citationNatt, A., Haberle, S., Jacobsen, G. E., & Tibby, J. (2007). Preliminary paleolimnological data from a Santiago island coastal lagoon, Galapagos Archipelago, Ecuador. Poster presented to the 15th Australian Conference on Nuclear and Complementary Techniques of Analysis and 9th Vacuum Society of Australia Congress, 21st – 23rd November 2007, (pp. 249). Melbourne, Australia: University of Melbourne.en_AU
dc.identifier.conferenceenddate23 November 2007en_AU
dc.identifier.conferencename15th Australian Conference on Nuclear and Complementary Techniques of Analysis and 9th Vacuum Society of Australia Congressen_AU
dc.identifier.conferenceplaceMelbourne, Australiaen_AU
dc.identifier.conferencestartdate21 November 2007en_AU
dc.identifier.govdoc1066en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/2573en_AU
dc.language.isoenen_AU
dc.publisherVacuum Society of Australiaen_AU
dc.subjectEcuadoren_AU
dc.subjectIslandsen_AU
dc.subjectCoastal regionsen_AU
dc.subjectDataen_AU
dc.subjectLimnologyen_AU
dc.subjectSouthern Oscillationen_AU
dc.titlePreliminary paleolimnological data from a Santiago island coastal lagoon, Galapagos Archipelago, Ecuadoren_AU
dc.typeConference Posteren_AU
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