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Artículo

Holocene environmental changes in the fuegian forest and steppe, Argentina

Coronato, Andrea Maria JosefaIcon ; Borromei, Ana María; Ponce, Juan FedericoIcon ; Candel, Soledad; Musotto, Lorena LauraIcon ; Fernández, MarilénIcon ; Laprida, CeciliaIcon ; Mehl, Adriana EsterIcon ; Montes, AlejandroIcon ; San Martín, Cristina NataliaIcon ; Savoretti, María AdolfinaIcon ; Cusminsky, Gabriela CatalinaIcon ; Gordillo, SandraIcon ; Orgeira, Maria JuliaIcon ; López, Ramiro; Alli, Pamela DanielaIcon ; Quiroga, Diego
Fecha de publicación: 11/2022
Editorial: Pergamon-Elsevier Science Ltd
Revista: Journal of South American Earth Sciences
ISSN: 0895-9811
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Geociencias multidisciplinaria

Resumen

Environmental changes were reconstructed from a multiproxy synthesis of over 30 localities from the Isla Grande de Tierra del Fuego and Isla de los Estados, southernmost South America. At a local scale, the results from the mountain forest and gently undulating steppe areas were integrated as well as those from the marine environments of the Beagle Channel and the Atlantic coasts. At a regional scale, the results were integrated with those published for the southernmost Andean and Extra-Andean Patagonia and the Antarctic Peninsula. This study focuses on the environmental evolution during the Late Glacial-Holocene transition, the Middle to Late Holocenetransgressive-regressive hemicycle and wet-dry oscillations, the Medieval Climate Anomaly, the Little Ice Age, the tephra inputs from the Patagonian Andes, and the recent climatic warming. Most paleoenvironmental changes are related to variations in the latitudinal position and intensity of the Southern Westerly Winds (SWW) while others are associated with astronomical or endogenous forcings. At a strong intensity of the SWW, a greater contribution of humidity to the forest areas and an increase in the rainfall gradient create windy and arid conditions in the steppe. At a weak intensity of the SWW, lower humidity input in the forest areas and the advection of air masses from the Atlantic Ocean promoted humid and slightly windy conditions in the steppe.Similar environmental trends are observed between terrestrial and marine environments in the center and south of Tierra del Fuego, Isla de los Estados and the Antarctic Peninsula, and between the Fuegian steppe and Extra- Andean Patagonia. The paleoclimatic evidence reveal high environmental variability in the last 10,000 years for this sector of the Southern Hemisphere
Palabras clave: ENVIRONMENTAL VARIABILITY , LATE QUATERNARY , SOUTHERN HEMISPHERE WESTERLIES , SOUTHERN PATAGONIA , TERRESTRIAL AND MARINE ENVIRONMENTS
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/194198
DOI: http://dx.doi.org/10.1016/j.jsames.2022.103952
URL: https://www.sciencedirect.com/science/article/pii/S0895981122002413
Colecciones
Articulos(CADIC)
Articulos de CENTRO AUSTRAL DE INVESTIGACIONES CIENTIFICAS
Articulos(IGEBA)
Articulos de INSTITUTO DE GEOCIENCIAS BASICAS, APLICADAS Y AMBIENTALES DE BS. AS
Articulos(INGEOSUR)
Articulos de INST.GEOLOGICO DEL SUR
Citación
Coronato, Andrea Maria Josefa; Borromei, Ana María; Ponce, Juan Federico; Candel, Soledad; Musotto, Lorena Laura; et al.; Holocene environmental changes in the fuegian forest and steppe, Argentina; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 119; 103952; 11-2022; 1-25
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