منابع مشابه
Tundra soil carbon is vulnerable to rapid microbial decomposition under climate warming
Microbial decomposition of soil carbon in high-latitude tundra underlain with permafrost is one of the most important, but poorly understood, potential positive feedbacks of greenhouse gas emissions from terrestrial ecosystems into the atmosphere in a warmer world1–4. Using integrated metagenomic technologies, we showed that themicrobial functional community structure in the active layer of tun...
متن کاملMicr.obial Responses to Nitrogen Additions in Alpine Tundra Soil
S#oil nitrogen transformations were measured the year following nitrogen fertilization of alpine Kobresia myosuroides meadows to determine the influence of greater plant production and N content on net N mineralization and the microbial N pool. Previously fertilized soils contained substantially greater amounts of organic N than control soils. The average increase in soil organic N accounted fo...
متن کاملSoil CO2 production in upland tundra where permafrost is thawing
[1] Permafrost soils store nearly half of global soil carbon (C), and therefore permafrost thawing could lead to large amounts of greenhouse gas emissions via decomposition of soil organic matter. When ice-rich permafrost thaws, it creates a localized surface subsidence called thermokarst terrain, which changes the soil microenvironment. We used soil profile CO2 measurements to understand the r...
متن کاملTerriglobus saanensis sp. nov., an acidobacterium isolated from tundra soil.
Two aerobic bacterial strains, designated SP1PR4(T) and SP1PR5, were isolated from tundra soil samples collected from Saana fjeld, North-western Finland (69° 03' N 20° 50' E). Cells of both strains were Gram-negative, non-motile rods. Phylogenetic analysis indicated that the strains belong to the genus Terriglobus in subdivision 1 of the phylum Acidobacteria. Strains SP1PR4(T) and SP1PR5 shared...
متن کاملOrganic matter stabilization in a polygonal tundra soil
Introduction Conclusions References
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ژورنال
عنوان ژورنال: Nature
سال: 2010
ISSN: 0028-0836,1476-4687
DOI: 10.1038/467030a