Results 41 to 50 of about 2,114 (178)

Soil and Forest Degradation Driven by Cattle Grazing and Selective Logging in Sub‐Antarctic Nothofagus Ecosystems of Patagonia

open access: yesLand Degradation &Development, Volume 37, Issue 14, Page 10532-10545, 30 August 2026.
ABSTRACT Soil and forest degradation driven by chronic land‐use pressures is an increasingly widespread process in forested landscapes worldwide, yet its empirical characterization remains limited, particularly in temperate and sub‐Antarctic ecosystems.
Carlos Zamorano‐Elgueta   +4 more
wiley   +1 more source

Paleoseismic Evidence of Recent Co‐Seismic Ruptures in Western Tierra del Fuego, Chile

open access: yesTectonics, Volume 45, Issue 8, August 2026.
Abstract The Magallanes‐Fagnano fault (MFF) in Tierra del Fuego (TDF) is a major left‐lateral transform boundary between the South American and Scotia plates. While surface ruptures associated with the 1949 earthquakes have been documented in Argentina east of the Fagnano Lake, their extension to the west remained uncertain.
Ricardo Aguilera‐Cortés   +4 more
wiley   +1 more source

Entre los bordes. Hacia una nueva tipología de las series cortas

open access: yesÑawi: Arte, Diseño y Comunicación
Las series web, o series cortas, se caracterizan por su inestabilidad, incluso en su denominación. No son cine, tampoco TV. ¿Cómo podemos definirlas?
Natalia Eva Ader, Valeria Car
doaj   +1 more source

Nectar Robbery by Native and Invasive Bumblebees Reduces Floral Rewards but Not Seed Production in Desfontainia fulgens

open access: yesEcology and Evolution, Volume 16, Issue 7, July 2026.
We evaluated nectar robbery by native and invasive bumblebees in the hummingbird‐pollinated shrub Desfontainia fulgens in southern Chile. Nectar robbery strongly reduced nectar standing crop and altered floral visitation patterns, but these proximate effects did not translate into reduced seed production under natural pollination conditions.
Carlos E. Valdivia, José I. Orellana
wiley   +1 more source

Efecto del castor en el metabolismo del perifiton y en variables limnológicas de ríos y arroyos fueguinos

open access: yesEcología Austral, 2018
El castor norteamericano (Castor canadensis) es una especie invasora en Tierra del Fuego. Es capaz de transformar sistemas lóticos en lénticos por medio de la construcción de diques.
Victoria J. García   +1 more
doaj   +1 more source

Harnessing the benefits of herbarium specimen digitisation for inferring recent and ongoing plant extinctions

open access: yesNew Phytologist, Volume 251, Issue 2, Page 677-688, July 2026.
Summary Evidence for the ongoing biodiversity crisis rests on assessment of a small fraction of described species, with major knowledge gaps for most organisms, including plants. Here, we highlight how digitised herbarium specimens can be used to accelerate and improve estimates of recent and ongoing plant extinctions.
Aelys M. Humphreys   +4 more
wiley   +1 more source

Windblown Diatoms for Reconstructing Westerly Wind Variability in the South Atlantic Sector of the Southern Ocean

open access: yesGeophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract Southern Hemisphere westerly winds are important drivers of Antarctic and sub‐Antarctic environmental change. Short observational wind records prevent us from fully understanding the scope of their variability. Proxy records provide valuable tools to extend environmental records. Here we present a novel wind study based on the use of windblown
Dieter R. Tetzner   +4 more
wiley   +1 more source

Atmospheric Dust Transport to High‐Elevation Dronning Maud Land, Antarctica, Modulated by Cyclonic Circulation, the Pacific Decadal Oscillation, and Source Emissions

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 11, 16 June 2026.
Abstract The dependence of aeolian dust transport on atmospheric circulation patterns allows dust preserved in Antarctic ice cores to serve as a proxy for past circulation variability. Here, we investigate dust transport to high‐elevation Dronning Maud Land (DML) in Antarctica through analysis of the 1300‐year‐old ISOL‐ICE ice core dust record together
K. C. Henson   +4 more
wiley   +1 more source

Turismo antártico:

open access: yesCuadernos de Política Exterior Argentina, 2020
El turismo ha ido ocupando un lugar cada vez más relevante en la agenda de las Reuniones Consultivas del Tratado Antártico en virtud del incremento y diversificación de las prácticas turísticas.
Marisol Vereda, Marie Jensen
doaj   +1 more source

Recent exploration in Tierra del Fuego [PDF]

open access: yesScottish Geographical Magazine, 1888
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openaire   +1 more source

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