A5071170842- Geology and Paleoclimatology Research
- Isotope Analysis in Ecology
- Marine and coastal ecosystems
- Marine Biology and Ecology Research
- Atmospheric and Environmental Gas Dynamics
- Arctic and Antarctic ice dynamics
- Geochemistry and Geologic Mapping
- Methane Hydrates and Related Phenomena
- Hydrocarbon exploration and reservoir analysis
- Polar Research and Ecology
- earthquake and tectonic studies
- Cryospheric studies and observations
- Geological formations and processes
- Evolution and Paleontology Studies
- Marine and coastal plant biology
- Remote Sensing and LiDAR Applications
- Microbial Community Ecology and Physiology
- Marine Bivalve and Aquaculture Studies
- Viral gastroenteritis research and epidemiology
- Diatoms and Algae Research
- Climate change and permafrost
- Heavy metals in environment
- Vector-Borne Animal Diseases
- Marine and environmental studies
- Aquatic Invertebrate Ecology and Behavior
Instituto Antártico Chileno
2018-2024
Center for Dynamic Research on High Latitude Marine Ecosystems
2018-2022
Austral University of Chile
2010-2022
University of Concepción
2005-2015
We report the first record of microlepidopteran
Abstract. In the last decades, changing climate conditions have had a severe impact on sea ice at western Antarctic Peninsula (WAP), an area rapidly transforming under global warming. To study development of spring and environmental in pre-satellite era we investigated three short marine sediment cores for their biomarker inventory with particular focus proxy IPSO25 micropaleontological proxies. The core sites are located Bransfield Strait shelf to deep basin areas characterized by complex...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 561:31-50 (2016) - DOI: https://doi.org/10.3354/meps11903 Seasonal benthic patterns in a glacial Patagonian fjord: role of suspended sediment and terrestrial organic matter Eduardo Quiroga1,2,*, Paula Ortiz3,4, Rodrigo González-Saldías2,5,6, Brian Reid3, Fabián J. Tapia2,6, Iván Pérez-Santos2,7, Lorena...
The adherens junction complex, composed mainly of vascular endothelial (VE)-cadherin, β-catenin, p120, and γ-catenin, is the main element barrier in postcapillary venules. S-nitrosylation β-catenin p120 an important step proinflammatory agents-induced hyperpermeability. We investigated vitro vivo whether or not VE-cadherin S-nitrosylated using platelet-activating factor (PAF) as agonist. report that PAF-stimulates VE-cadherin, which disrupts its association with β-catenin. In addition, based...
We present a 100-year reconstruction of siliceous export production from sediments the Puyuhuapi Channel (44° S, 70° W) in Chilean fjords.We use accumulation rates and concentrations diatoms silicoflagellates, organic carbon (C org ) biogenic opal (Si OPAL as proxies production, fluctuations contribution freshwater rainfall hinterland river runoff.Box core collected at two sites within were analyzed: Station 35 (at head fjord; 56 m water depth) 40 (in middle Channel; 270 depth).Surface...
We present reconstructions of late Holocene changes in the source organic matter and siliceous export production Relocanví Fjord (41°S, 72°W), Northern Chilean Patagonia, based on carbon content, δ 13 C org , N/C ratio, diatom assemblages biogenic silica contents from three sediment cores. The age models are a combination 210 Pb profiles, AMS 14 dating, first occurrence Rhizosolenia setigera f. pungens as stratigraphic marker fjords. cores span last 300 to 700 yr. Diatoms dominate (98%...
Abstract. The aim of this project was to establish past variations in the main oceanographic and climatic features a transitional semiarid ecosystem on north-central Chilean coast. We analyzed recent sedimentary records retrieved from two bays, Guanaqueros Tongoy (30∘ S), for geochemical biological analyses, including following: sensitive redox trace elements, biogenic opal, total organic carbon (TOC), diatoms stable isotopes nitrogen. Three remarkable periods were established with different...
The coast of Chile has been exposed to marine submersion events from storm surges, tsunamis and flooding due heavy rains. We present evidence these using sedimentary records that cover the last 1000 years in Pachingo wetland. Two sediment cores were analyzed for granulometry, XRF, pollen, diatoms TOC. Three extreme produced by three pluvial during El Niño episodes identified. Geochronology was determined a conventional dating method 14C, 210Pbxs 137Cs). older event (E1) heavier, identified...
Abstract The changes implemented in 2005 the development strategies of Antarctic science carried out by Chile have had a positive impact on scientific productivity Chilean Science Program (PROCIEN). We analysed scientometric indicators from between 2009 and 2019. bibliographic data were extracted Web database using search query keywords. used multiple correspondence analysis to identify specific trends also network analyses international collaboration VOSviewer . number publications has...
Detailed knowledge of marine mammal diet is critical to understand their ecological roles and for the adequate management resources. Antarctic fur seals ( Arctocephalus gazella) in Southern Atlantic Ocean rely largely on krill Euphausia superba) during summer months, but winter remains unknown. Here, stable carbon nitrogen isotope ratios whiskers blood young (2–3 years old) subadult (4–7 seal males from South Shetland Islands were used assess seasonal interannual changes contribution diet....
The Antarctic environment is susceptible to the introduction of non-native species due its unique ecosystem, which has evolved under geographical isolation and extreme climatic conditions over an extended period. winter crane fly, Trichocera maculipennis, was recently introduced maritime Antarctica, likely pose a serious threat ecosystem. In this study, possibility mechanical transmission viruses evaluated using next-generation sequencing (NGS), quantitative polymerase chain reaction (qPCR),...
Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI
Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI
<title>Abstract</title> Background The Antarctic environment is susceptible to the introduction of non-native species due its unique ecosystem, which has evolved under geographical isolation and extreme climatic conditions over an extended period. winter crane fly, <italic>Trichocera maculipennis</italic>, was recently introduced maritime Antarctica, likely pose a serious threat ecosystem. In this study, possibility mechanical transmission viruses evaluated. Methods evaluated using...