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Chastel O. (2020).
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Chastel O. (2020). Contaminants of Growing Concern: Poly- and Perfluoroalkylated Substances (PFAS) and their Physiological Consequences in Seabirds.
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Chelsea Ward. (2020). Examining the effect of experimentally induced stress and the stress response on eye region surface temperature in wild king penguins (Aptenodytes patagonicus) (supervisors P Bize and A Lewden).
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. (2020). Snow microbiome functional analyses reveal novel aspects of microbial metabolism of complex organic compounds (Vol. 9).
Abstract: Microbes active in extreme cold are not as well explored as those of other extreme environments. Studies have revealed a substantial microbial diversity and identified cold-specific microbiome molecular functions. We analyzed the metagenomes and metatranscriptomes of 20 snow samples collected in early and late spring in Svalbard, Norway using mi-faser, our read-based computational microbiome function annotation tool. Our results reveal a more diverse microbiome functional capacity and activity in the early- vs. late-spring samples. We also find that functional dissimilarity between the same-sample metagenomes and metatranscriptomes is significantly higher in early than late spring samples. These findings suggest that early spring samples may contain a larger fraction of DNA of dormant (or dead) organisms, while late spring samples reflect a new, metabolically active community. We further show that the abundance of sequencing reads mapping to the fatty acid synthesis-related microbial pathways in late spring metagenomes and metatranscriptomes is significantly correlated with the organic acid levels measured in these samples. Similarly, the organic acid levels correlate with the pathway read abundances of geraniol degradation and inversely correlate with those of styrene degradation, suggesting a possible nutrient change. Our study thus highlights the activity of microbial degradation pathways of complex organic compounds previously unreported at low temperatures.
Keywords: metagenome metatranscriptome mi-faser snow microbiome
Programme: 1192
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Christophe Barbraud, Adrien Chaigne, Maxime Loubon, Olivier Lamy, Fabrice Le Bouard. (2020). An estimate of the South Georgia diving petrel Pelecanoides georgicus population at Ile de la Possession, Crozet archipelago (Vol. 32).
Keywords: acoustic playback burrowing petrel detection probability distance sampling Procellariiformes
Programme: 109
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. (2020). Population trends of penguins in the French Southern Territories (Vol. 43). Bachelor's thesis, , .
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. (2020). (Vol. 4). Bachelor's thesis, , .
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. (2020). Holocene dynamics of the southern westerly winds over the Indian Ocean inferred from a peat dust deposition record (Vol. 231). Bachelor's thesis, , .
Keywords: Amsterdam Island Anthropogenic activities Dust sources Peat Southern westerly winds
Programme: 1065,1133
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Crouzet N., et al. (2020). Towards a two-colour photometer at Dome C, Antartica.
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Crouzet N., et al. (2020). Towards ASTEP+, a two-color photometric telescope at Dome C, Antarctica (Vol. Paper 11447-23). Bachelor's thesis, , .
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