干旱区生态环境知识资源中心(Arid): Gullies and Moraines Are Islands of Biodiversity in an Arid, Mountain Landscape, Asgard Range, Antarctica

Arid

DOI	10.3389/fmicb.2021.654135
	Gullies and Moraines Are Islands of Biodiversity in an Arid, Mountain Landscape, Asgard Range, Antarctica
	Solon, Adam J.; Mastrangelo, Claire; Vimercati, Lara; Sommers, Pacifica; Darcy, John L.; Gendron, Eli M. S.; Porazinska, Dorota L.; Schmidt, S. K.
通讯作者	Schmidt, SK (corresponding author), Univ Colorado, Dept Ecol & Evolutionary Biol, Boulder, CO 80309 USA.
来源期刊	FRONTIERS IN MICROBIOLOGY
ISSN	1664-302X
出版年	2021
卷号	12
英文摘要	Cold, dry, and nutrient-poor, the McMurdo Dry Valleys of Antarctica are among the most extreme terrestrial environments on Earth. Numerous studies have described microbial communities of low elevation soils and streams below glaciers, while less is known about microbial communities in higher elevation soils above glaciers. We characterized microbial life in four landscape features (habitats) of a mountain in Taylor Valley. These habitats varied significantly in soil moisture and include moist soils of a (1) lateral glacial moraine, (2) gully that terminates at the moraine, and very dry soils on (3) a southeastern slope and (4) dry sites near the gully. Using rRNA gene PCR amplicon sequencing of Bacteria and Archaea (16S SSU) and eukaryotes (18S SSU), we found that all habitat types harbored significantly different bacterial and eukaryotic communities and that these differences were most apparent when comparing habitats that had macroscopically visible soil crusts (gully and moraine) to habitats with no visible crusts (near gully and slope). These differences were driven by a relative predominance of Actinobacteria and a Colpodella sp. in non-crust habitats, and by phototrophic bacteria and eukaryotes (e.g., a moss) and predators (e.g., tardigrades) in habitats with biological soil crusts (gully and moraine). The gully and moraine also had significantly higher 16S and 18S ESV richness than the other two habitat types. We further found that many of the phototrophic bacteria and eukaryotes of the gully and moraine share high sequence identity with phototrophs from moist and wet areas elsewhere in the Dry Valleys and other cold desert ecosystems. These include a Moss (Bryum sp.), several algae (e.g., a Chlorococcum sp.) and cyanobacteria (e.g., Nostoc and Phormidium spp.). Overall, the results reported here broaden the diversity of habitat types that have been studied in the Dry Valleys of Antarctica and suggest future avenues of research to more definitively understand the biogeography and factors controlling microbial diversity in this unique ecosystem.
英文关键词	cold deserts gullies microbial oases extremophiles biological soil crusts Bryum cryobiosphere
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000664967100001
WOS关键词	MCMURDO DRY VALLEYS ; BACTERIAL DIVERSITY ; COLD DESERT ; TAYLOR VALLEY ; CYANOBACTERIAL DIVERSITY ; MICROBIAL DIVERSITY ; CRYOCONITE HOLES ; VICTORIA LAND ; HIGH-ALTITUDE ; LAKE FRYXELL
WOS类目	Microbiology
WOS研究方向	Microbiology
来源机构	University of California, Berkeley
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350308
作者单位	[Solon, Adam J.; Vimercati, Lara; Sommers, Pacifica; Schmidt, S. K.] Univ Colorado, Dept Ecol & Evolutionary Biol, Boulder, CO 80309 USA; [Mastrangelo, Claire] Univ Calif Berkeley, Sch Publ Hlth, Berkeley, CA 94720 USA; [Darcy, John L.] Univ Colorado, Div Biomed Informat & Personalized Med, Anschutz Med Campus, Denver, CO USA; [Gendron, Eli M. S.; Porazinska, Dorota L.] Univ Florida, Dept Entomol & Nematol, Gainesville, FL 32611 USA
推荐引用方式 GB/T 7714	Solon, Adam J.,Mastrangelo, Claire,Vimercati, Lara,et al. Gullies and Moraines Are Islands of Biodiversity in an Arid, Mountain Landscape, Asgard Range, Antarctica[J]. University of California, Berkeley,2021,12.
APA	Solon, Adam J..,Mastrangelo, Claire.,Vimercati, Lara.,Sommers, Pacifica.,Darcy, John L..,...&Schmidt, S. K..(2021).Gullies and Moraines Are Islands of Biodiversity in an Arid, Mountain Landscape, Asgard Range, Antarctica.FRONTIERS IN MICROBIOLOGY,12.
MLA	Solon, Adam J.,et al."Gullies and Moraines Are Islands of Biodiversity in an Arid, Mountain Landscape, Asgard Range, Antarctica".FRONTIERS IN MICROBIOLOGY 12(2021).