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An Acad Bras Cienc 2022 30;94(suppl 1):e20210602. Epub 2022 May 30.

Universidade Federal de Viçosa, Departamento de Solos, Av. PH Rolfs, 36570-900 Viçosa, MG, Brazil.

Antarctic plant communities show a close relationship with soil types across the landscape, where vegetation cover changes, biological influence, and soil characteristics can affect the dynamic of greenhouse gases emissions. Thus, the objective of this study was to evaluate greenhouse gases emissions in lab conditions of ice-free areas along a topographic gradient (from sea level up to 300 meters). We selected 11 distinct vegetation compositions areas and assessed greenhouse gases production potentials through 20 days of laboratory incubations varying temperatures at -2, 4, 6, and 22 °C. Read More

An Acad Bras Cienc 2022 29;94(suppl 1):e20210436. Epub 2022 Apr 29.

Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal do Pampa, Laboratório de Taxonomia de Fungos, Av. Antonio Trilha, 1847, Centro, 97300-162 São Gabriel, RS, Brazil.

The Antarctic Peninsula has experienced some of the most accelerated warming worldwide, resulting in the retreat of glaciers and creation of new areas for plant development. Information regarding the plant dispersal processes to these new niches is scarce in Antarctica, despite birds being important vectors elsewhere. Many bird pellets (with feed remains such as bones and feathers) are generated annually in Antarctica, which are light and easily transported by the wind and include vegetation that is accidentally or purposely swallowed. Read More

Mitochondrial DNA B Resour 2022 22;7(4):683-685. Epub 2022 Apr 22.

Fairylake Botanical Garden, Shenzhen & Chinese Academy of Sciences, Shenzhen, China.

Plastid genomes are useful markers in resolving plant phylogenetic relationships for various taxonomic groups. Here, we sequenced and assembled the complete plastid genome sequence of an Antarctic moss (Hook. f. Read More

An Acad Bras Cienc 2022 1;94(suppl 1):e20191467. Epub 2022 Apr 1.

Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal do Pampa/ UNIPAMPA, Campus São Gabriel, Rua Aluizio Barros de Macedo, BR 290, Km 423, Piraí, 97300-000 São Gabriel, RS, Brazil.

Ice-free areas of Antarctica represent an important study region that helps us understand how human activity affects plant communities and soil properties. The goal of this study was to determine the changes in plant composition and soil properties around a whale bone skeleton (WB) near Ferraz Station, King George Island, Antarctica from 1972 to 2020 (48 years). The WB was assembled in 1972 by Jacques-Yves Cousteau and his team. Read More

Environ Monit Assess 2022 Apr 6;194(5):328. Epub 2022 Apr 6.

Chemistry Department, Yıldız Technical University, 34220, İstanbul, Turkey.

Antarctica has seen an increase in scientific research and tourism, and anthropogenic activities such as incineration of waste products and fuel combustion for energy and transportation are potential contamination sources to the ecosystem. Polycyclic aromatic hydrocarbons are common products of incomplete combustion of organic compounds and could be among accumulating contaminants in Antarctica. Thus, this study sought to develop a sensitive dispersive liquid-liquid microextraction method for the determination of 15 polycyclic aromatic hydrocarbons by gas chromatography mass spectrometry. Read More