Publications by authors named "M N Bourquin"
Article Synopsis
- Glacier-fed streams (GFS) are extreme aquatic ecosystems with little nutrients and fluctuating environments, where microorganisms predominantly form biofilms.
- Researchers analyzed 156 metagenomes from various mountain ranges, revealing thousands of metagenome-assembled genomes (MAGs) of prokaryotes, algae, fungi, and viruses that demonstrate complex biotic interactions in these biofilms.
- The study found that as glaciers shrink, biofilms transition from using inorganic energy sources to relying more on heterotrophy as algal biomass increases, highlighting the adaptability of microbial life in these unique ecosystems amid climate change.
Article Synopsis
- The rapid melting of mountain glaciers, a sign of climate change, threatens unique ecosystems known as glacier-fed streams (GFSs), which are primarily dominated by microbial life.
- Using advanced techniques like metabarcoding and metagenomics, researchers conducted a detailed study of the bacterial microbiome in 152 GFSs across major mountain ranges, revealing distinct taxonomic and functional differences compared to other cryospheric microbiomes.
- The findings highlight the importance of geographic isolation and environmental factors in shaping bacterial diversity, underscoring the urgent need for further research due to the risks posed by climate change to this unique ecosystem.
Precision measurements by the Alpha Magnetic Spectrometer (AMS) on the International Space Station of the deuteron (D) flux are presented. The measurements are based on 21×10^{6} D nuclei in the rigidity range from 1.9 to 21 GV collected from May 2011 to April 2021.
View Article and Find Full Text PDFWe present the precision measurements of 11 years of daily cosmic positron fluxes in the rigidity range from 1.00 to 41.9 GV based on 3.
View Article and Find Full Text PDFThe glaciers on Africa's 'Mountains of the Moon' (Rwenzori National Park, Uganda) are predicted to disappear within the next decades owing to climate change. Consequently, the glacier-fed streams (GFSs) that drain them will vanish, along with their resident microbial communities. Despite the relevance of microbial communities for performing ecosystem processes in equatorial GFSs, their ecology remains understudied.
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