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dc.contributor.author
Caffau, Mauro
dc.contributor.author
Lenaz, Davide
dc.contributor.author
Lodolo, Emanuele
dc.contributor.author
Zecchin, Massimo
dc.contributor.author
Comici, Cinzia
dc.contributor.author
Tassone, Alejandro Alberto
dc.date.available
2017-07-10T21:38:04Z
dc.date.issued
2015-09
dc.identifier.citation
Caffau, Mauro; Lenaz, Davide; Lodolo, Emanuele; Zecchin, Massimo; Comici, Cinzia; et al.; First evidence of testate amoebae in Lago Fagnano (54° S), Tierra del Fuego (Argentina): Proxies to reconstruct environmental changes; Elsevier; Journal of South American Earth Sciences; 64; Part 1; 9-2015; 27-41
dc.identifier.issn
0895-9811
dc.identifier.uri
http://hdl.handle.net/11336/20072
dc.description.abstract
We report here the first findings of testate amoebae at high southern latitudes (54° S) from four gravity cores recovered in the Lago Fagnano (Tierra del Fuego, Argentina), where twelve taxa have been recognized. Among them, Centropyxis constricta “constricta”, Centropyxis elongata, Difflugia globulus, Difflugia oblonga “oblonga”, and Difflugia protaeiformis “amphoralis” are always present, while other taxa are randomly distributed. According to the sand/silt ratio in the different cores, the Total Organic Carbon content and the Carbon/Nitrogen ratio, as well as the presence/disappearance and abundance of testate amoebae from cluster analysis, we infer a correlation between major textural/granulometrical changes found in the cores and environmental changes. A seismic event occurred on 1949, which substantially modified the morphology of the eastern Lago Fagnano shoreline and the supply pattern from two main eastern tributaries of the lake, is recorded in the studied cores. This event has in part modified the distribution of testate amoebae taxa within the studied cores. Present results show that testate amoebae represent important indicators to detect changes occurring in the environment in which they live.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Tierra del Fuego
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Lago Fagnano
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Testate Amoebae
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Environmental Changes
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Earthquake
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Geociencias multidisciplinaria
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
First evidence of testate amoebae in Lago Fagnano (54° S), Tierra del Fuego (Argentina): Proxies to reconstruct environmental changes
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-07-10T16:20:43Z
dc.journal.volume
64
dc.journal.number
Part 1
dc.journal.pagination
27-41
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Caffau, Mauro. Istituto Nazionale di Oceanografia e di Geofisica Sperimentale; Italia
dc.description.fil
Fil: Lenaz, Davide. Universita Degli Studi Di Trieste; Italia
dc.description.fil
Fil: Lodolo, Emanuele. Istituto Nazionale di Oceanografia e di Geofisica Sperimentale; Italia
dc.description.fil
Fil: Zecchin, Massimo. Istituto Nazionale di Oceanografia e di Geofisica Sperimentale; Italia
dc.description.fil
Fil: Comici, Cinzia. Istituto Nazionale di Oceanografia e di Geofisica Sperimentale; Italia
dc.description.fil
Fil: Tassone, Alejandro Alberto. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología. Instituto de Geofísica "Daniel Valencio"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Journal of South American Earth Sciences
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jsames.2015.09.007
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0895981115300596
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