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Four years of active sampling and measurement of atmospheric polycyclic aromatic hydrocarbons and oxygenated polycyclic aromatic hydrocarbons in Dronning Maud Land, East Antarctica Universiteit Gent
Antarctica, protected by its strong polar vortex and sheer distance from anthropogenic activity, was always thought of as pristine. However, as more data on the occurrence of persistent organic pollutants on Antarctica emerge, the question arises of how fast the long-range atmospheric transport takes place. Therefore, polycyclic aromatic hydrocarbons (PAHs) and oxygenated (oxy-)PAHs were sampled from the atmosphere and measured during 4 austral ...
Ice core evidence for a 20th century increase in surface mass balance in coastal Dronning Maud Land, East Antarctica Vrije Universiteit Brussel KU Leuven
Ice cores provide temporal records of surface mass balance (SMB). Coastal areas of Antarctica have relatively high and variable SMB, but are under-represented in records spanning more than 100 years. Here we present SMB reconstruction from a 120 m-long ice core drilled in 2012 on the Derwael Ice Rise, coastal Dronning Maud Land, East Antarctica. Water stable isotope (δ18O and δD) stratigraphy is supplemented by discontinuous major ion profiles ...
Life on the frozen continent: diversity of RuBisCO, nifH and pufLM genes in soils around the Princess Elisabeth Station, Sør Rondane Mountains, Antarctica Universiteit Gent
In Antarctica, photosynthesis by Cyanobacteria is generally thought to be the main primary source of organic carbon for complex microbial communities. Many cyanobacterial species are also able to fix nitrogen. Therefore, they can survive and prosper in almost every habitat, including Antarctica, EarthU+2019s most extreme continent. However, several studies of Antarctic microbial communities have shown that Cyanobacteria are not always highly ...
Heterotrophic bacterial diversity in aquatic microbial mat communities from Antarctica Plantentuin Meise / Agentschap Plantentuin Meise Universiteit Gent
Heterotrophic bacteria isolated from five aquatic microbial mat samples from different locations in continental Antarctica and the Antarctic Peninsula were compared to assess their biodiversity. A total of 2,225 isolates obtained on different media and at different temperatures were included. After an initial grouping by whole-genome fingerprinting, partial 16S rRNA gene sequence analysis was used for further identification. These results were ...
Extinction of austral diatoms in response to large-scale climate dynamics in Antarctica Universiteit Gent Plantentuin Meise / Agentschap Plantentuin Meise Universiteit Antwerpen
De Belgische milieubeschermingsregels voor activiteiten, infrastructuur en voertuigen op Antarctica in het licht van de bevoegdheidsverdeling Vrije Universiteit Brussel
The judgment of the Belgian Constitutional Court is too quick to decide that the federal government has residuary competences to adopt the Belgian environmental protection rules for activities, infrastructure and vehicles on Antarctica in light of the division of competence, as those activities can be located in the regions.
Source identification of atmospheric particle-bound metals at Terra Nova Bay, Antarctica Universiteit Gent
During the 2010-2011 austral summer, size-segregated aerosol samples were collected at a coastal Antarctic site (Terra Nova Bay, Victoria Land) and analysed for major and trace elements and lead isotopic composition, in order to provide a better understanding of the sources of metals and their transportation pathways towards Antarctica. Aerosol size fractionation was performed by a cascade impactor, able to collect aerosol particles of ...
Carnobacterium iners sp. nov., a psychrophilic, lactic acid-producing bacterium from the littoral zone of the Forlidas pond (Pensacola mountains), Antarctica Vrije Universiteit Brussel
Two rod-shaped, lactic acid-producing, Gram-positive bacteria were isolated from a microbial mat actively growing in the littoral zone of an Antarctic lake (Forlidas Pond) in the Pensacola mountains. A polyphasic taxonomic study was conducted involving phylogenetic analysis of the 16S rRNA genes and multi-locus sequence analysis of the pheS, rpoA, and atpA genes. The obtained results proved that one strain, designated LMG 26641, belongs to ...
A 32-day long fieldwork in Antarctica improves heat tolerance during physical exercise Vrije Universiteit Brussel
We evaluated the influence of a 32-day camping in Antarctica on physical performance and exercise-induced thermoregulatory responses. In Brazil, before and after the Antarctic camping, the volunteers performed an incremental exercise at temperate conditions and, two days later, an exercise heat stress protocol (45-min running at 60% of maximum aerobic speed, at 31°C and 60% of relative humidity). In Antarctica, core temperature was assessed ...