• Publications
  • Influence
Soil organic carbon pools in the northern circumpolar permafrost region
of all soils in the northern permafrost region is approximately 18,782 � 10 3 km 2 ,o r approximately 16% of the global soil area. In the northern permafrost region, organic soils (peatlands) andExpand
  • 1,971
  • 137
  • PDF
Global patterns of the isotopic composition of soil and plant nitrogen
[1] We compiled new and published data on the natural abundance N isotope composition (δ15N values) of soil and plant organic matter from around the world. Across a broad range of climate andExpand
  • 828
  • 93
Vulnerability of Permafrost Carbon to Climate Change: Implications for the Global Carbon Cycle
ABSTRACT Thawing permafrost and the resulting microbial decomposition of previously frozen organic carbon (C) is one of the most significant potential feedbacks from terrestrial ecosystems to theExpand
  • 1,331
  • 58
  • PDF
Ecosystem carbon storage in arctic tundra reduced by long-term nutrient fertilization
Global warming is predicted to be most pronounced at high latitudes, and observational evidence over the past 25 years suggests that this warming is already under way. One-third of the global soilExpand
  • 849
  • 57
  • PDF
Global patterns of foliar nitrogen isotopes and their relationships with climate, mycorrhizal fungi, foliar nutrient concentrations, and nitrogen availability.
Ratios of nitrogen (N) isotopes in leaves could elucidate underlying patterns of N cycling across ecological gradients. To better understand global-scale patterns of N cycling, we compiled data onExpand
  • 616
  • 55
  • PDF
Permafrost and the Global Carbon Budget
Climate warming will thaw permafrost, releasing trapped carbon from this high-latitude reservoir and further exacerbating global warming.
  • 838
  • 51
  • PDF
Climate change and the permafrost carbon feedback
Large quantities of organic carbon are stored in frozen soils (permafrost) within Arctic and sub-Arctic regions. A warming climate can induce environmental changes that accelerate the microbialExpand
  • 1,401
  • 47
  • PDF
The effect of permafrost thaw on old carbon release and net carbon exchange from tundra
Permafrost soils in boreal and Arctic ecosystems store almost twice as much carbon as is currently present in the atmosphere. Permafrost thaw and the microbial decomposition of previously frozenExpand
  • 908
  • 42
  • PDF
Causes of variation in soil carbon simulations from CMIP5 Earth system models and comparison with observations
Stocks of soil organic carbon represent a large component of the carbon cycle that may participate in climate change feedbacks, particularly on decadal and centennial timescales. For Earth systemExpand
  • 501
  • 40
  • PDF
Estimated stocks of circumpolar permafrost carbon with quantified uncertainty ranges and identified data gaps
Soils and other unconsolidated deposits in the northern circumpolar permafrost region store large amounts of soil organic carbon (SOC). This SOC is potentially vulnerable to remobilization followingExpand
  • 774
  • 38
  • PDF