@article {4941,
	title = {Biogeographic survey of soil bacterial communities across Antarctica},
	journal = {Microbiome},
	volume = {12},
	year = {2024},
	month = {01/2024},
	abstract = {<p>Antarctica and its unique biodiversity are increasingly at risk from the effects of global climate change and other human influences. A significant recent element underpinning strategies for Antarctic conservation has been the development of a system of Antarctic Conservation Biogeographic Regions (ACBRs). The datasets supporting this classification are, however, dominated by eukaryotic taxa, with contributions from the bacterial domain restricted to Actinomycetota and Cyanobacteriota. Nevertheless, the ice-free areas of the Antarctic continent and the sub-Antarctic islands are dominated in terms of diversity by bacteria. Our study aims to generate a comprehensive phylogenetic dataset of Antarctic bacteria with wide geographical coverage on the continent and sub-Antarctic islands, to investigate whether bacterial diversity and distribution is reflected in the current ACBRs.</p>},
	keywords = {LTER-MCM, Antarctic Conservation Biogeographic Regions (ACBRs), Antarctic soil microbiome, bioclimatic variables, biogeography, microbial diversity, regionalization, soils},
	doi = {10.1186/s40168-023-01719-3},
	url = {https://microbiomejournal.biomedcentral.com/articles/10.1186/s40168-023-01719-3},
	author = {Varliero, Gilda and Lebre, Pedro H. and Byron Adams and Steven L. Chown and Peter Convey and Dennis, Paul G. and Fan, Dandan and Ferrari, Belinda and Frey, Beat and Hogg, Ian D. and Hopkins, David W. and Kong, Weidong and Makhalanyane, Thulani and Matcher, Gwynneth and Newsham, Kevin K. and Stevens, Mark I. and Weigh, Katherine V. and Cowan, Don A.}
}
@article {4718,
	title = {Elevational constraints on the composition and genomic attributes of microbial communities in Antarctic soils},
	journal = {mSystems},
	volume = {7},
	year = {2022},
	month = {01/2022},
	pages = {e01330-21},
	abstract = {<p>The inland soils found on the Antarctic continent represent one of the more challenging environments for microbial life on Earth. Nevertheless, Antarctic soils harbor unique bacterial and archaeal (prokaryotic) communities able to cope with extremely cold and dry conditions. These communities are not homogeneous, and the taxonomic composition and functional capabilities (genomic attributes) of these communities across environmental gradients remain largely undetermined. We analyzed the prokaryotic communities in soil samples collected from across the Shackleton Glacier region of Antarctica by coupling quantitative PCR, marker gene amplicon sequencing, and shotgun metagenomic sequencing. We found that elevation was the dominant factor explaining differences in the structures of the soil prokaryotic communities, with the drier and saltier soils found at higher elevations harboring less diverse communities and unique assemblages of cooccurring taxa. The higher-elevation soil communities also had lower maximum potential growth rates (as inferred from metagenome-based estimates of codon usage bias) and an overrepresentation of genes associated with trace gas metabolism. Together, these results highlight the utility of assessing community shifts across pronounced environmental gradients to improve our understanding of the microbial diversity found in Antarctic soils and the strategies used by soil microbes to persist at the limits of habitability.</p>},
	keywords = {LTER-MCM, Antarctica, microbial ecology, soil microbiology, soils},
	doi = {10.1128/msystems.01330-21},
	url = {https://journals.asm.org/doi/full/10.1128/msystems.01330-21},
	author = {Dragone, Nicholas B. and Henley, Jessica B. and Holland-Moritz, Hannah and Melisa A. Diaz and Hogg, Ian D. and W. Berry Lyons and Diana H. Wall and Byron Adams and Noah Fierer},
	editor = {Mackelprang, Rachel}
}
