A5028476845- Geology and Paleoclimatology Research
- Geological formations and processes
- Botany and Plant Ecology Studies
- Ecology and biodiversity studies
- Species Distribution and Climate Change
- Oceanographic and Atmospheric Processes
- Environmental DNA in Biodiversity Studies
- Environmental and Ecological Studies
- Ecology and Vegetation Dynamics Studies
- Radioactive element chemistry and processing
- Environmental and Cultural Studies in Latin America and Beyond
- Water Resource Management and Quality
- Methane Hydrates and Related Phenomena
- Forest Ecology and Biodiversity Studies
- Plant Taxonomy and Phylogenetics
- Microbial Fuel Cells and Bioremediation
- Peatlands and Wetlands Ecology
- Collembola Taxonomy and Ecology Studies
- Hydrocarbon exploration and reservoir analysis
- Cryospheric studies and observations
- Microbial Community Ecology and Physiology
- Arctic and Antarctic ice dynamics
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
2023-2024
Fundación Ciencias Exactas y Naturales
2023-2024
University of Buenos Aires
2023-2024
Consejo Nacional de Investigaciones Científicas y Técnicas
2012-2015
Austral University
2014
National University of Tierra del Fuego
2012
The Antarctic Circumpolar Current (ACC) represents the world's largest ocean-current system and affects global ocean circulation, climate ice-sheet stability
Circumpolar Deep Water (CDW) poses a major threat for the future stability of Antarctic Ice Sheet. In Southern Ocean, CDW encroaches onto continental shelf in East Antarctica. is warmest deep-water mass within and thus, harbours large amounts heat with potential to drive basal melting under ice cavities it reaches. The PS141 expedition focused on Denman Glacier, one fastest retreating glaciers Aurora subglacial basin. It holds sea level rise equivalent up 1.6 m. However, processes behind...
Sheath-forming iron- and manganese-depositing bacteria belonging to the Sphaerotilus–Leptothrix group (SLG) are widespread in natural artificial water systems. Known requirements for their growth include presence of organic substrates molecular oxygen. High concentrations reduced iron or manganese, although not necessary most species, make a noticeable phenomenon. Such microbial communities have been studied mostly Northern Hemisphere. Here, we present descriptions diverse ochre-depositing...
Jonathan J. Henn (corresponding author), CADICCONICET, Houssay 200 (9410) Ushuaia, Tierra del Fuego, Argentina, henn.jonathan{at}gmail.com.
Abstract Old-growth forests present a mosaic of different conditions resulting from the natural forest structure stands. Nothofagus betuloides have high spatial variability in regeneration without clear correlation with overstory, and could be related to location stands landscape. The objective was evaluate influence macro- micro-variables over dynamics old-growth N. forests, considering effect landscape (altitude sea) microenvironment floor (closeness trees, pits, understory cover type bare...
Bioindicators could act as early warning indicators of environmental changes, ecosystem stress or taxonomic diversity. Pseudoscorpions have rarely been used bioindicators, due to lack information about their ecology, habitat selection, niche preferences and requirements, especially in southern Nothofagus forests. We studied the distribution abundance a pseudoscorpion species, Neochelanops michaelseni (Simon 1902), different vegetation types (Nothofagus antarctica N. pumilio forests,...
ABSTRACT The Argentine Basin is a deep-sea basin located in the South Atlantic Ocean that contains sedimentary deposits derived from different provenances. It characterized by complex ocean dynamics encompassing diverse spatial and temporal dimensions. northward subantarctic Malvinas Current southward subtropical Brazil converge at western margin of Basin, resulting formation Brazil–Malvinas Confluence region. Bottom currents, particularly currents flowing alongslope horizontal eddies, are...
A new species of Symphyla, Hanseniella guerreroi sp. nov. , is described from specimens collected during expeditions to the Tierra del Fuego archipelago, including Isla Grande de and los Estados in Argentina, as well Navarino Chile. To best our knowledge, this represents southernmost record for a myriapod class Symphyla. The morphological affinities with other Gondwanan landmasses are discussed, highlighting its potential studying impact last Quaternary glaciation on soil arthropods far...
Abstract Bottom‐current related sediments have been commonly used for paleoceanographic reconstructions. However, the strength and variability of bottom currents are poorly understood thus processes that control sedimentation in deep environments not clear. In this study, we focus on Drake Passage, which is connected to Antarctic Circumpolar Current, has a major impact global climate. We studied intensity how they sedimentary processes. For purpose, 27‐years from GLORYS12 Mercator Ocean...