Now showing items 1-5 of 5

  • Assessing the carbon balance of circumpolar Arctic tundra using remote sensing and process modeling 

    Sitch, Stephen; McGuire, A. David; Kimball, John S.; Gedney, Nicola; Gamon, John; Engstrom, Ryan; Wolf, Annett; Zhuang, Qianlai; Clein, Joy S.; McDonald, Kyle C. (Ecological Society of America, 2007-01)
    This paper reviews the current status of using remote sensing and process-based modeling approaches to assess the contemporary and future circumpolar carbon balance of Arctic tundra, including the exchange of both carbon ...
  • Burn severity influences postfire CO2 exchange in Arctic tundra 

    Rocha, Adrian V.; Shaver, Gaius R. (Ecological Society of America, 2011-03)
    Burned landscapes present several challenges to quantifying landscape carbon balance. Fire scars are composed of a mosaic of patches that differ in burn severity, which may influence postfire carbon budgets through damage ...
  • Carbon turnover in Alaskan tundra soils : effects of organic matter quality, temperature, moisture and fertilizer 

    Shaver, Gaius R.; Giblin, Anne E.; Nadelhoffer, Knute J.; Thieler, K. K.; Downs, M. R.; Laundre, James A.; Rastetter, Edward B. (2006-02-15)
    Soils of tundra and boreal ecosystems contain large organic matter stocks, typically as a layer of peat that blankets the underlying mineral soil. Despite the low productivity of northern vegetation, organic matter accumulates ...
  • Long-term experimental warming and nutrient additions increase productivity in tall deciduous shrub tundra 

    DeMarco, Jennie; Mack, Michelle C.; Bret-Harte, M. Syndonia; Burton, Mark; Shaver, Gaius R. (Ecological Society of America, 2014-06-19)
    Warming Arctic temperatures can drive changes in vegetation structure and function directly by stimulating plant growth or indirectly by stimulating microbial decomposition of organic matter and releasing more nutrients ...
  • Vegetation shifts observed in arctic tundra 1.5 decades after fire 

    Barrett, Kirsten; Rocha, Adrian V.; van de Weg, Martine J.; Shaver, Gaius R. (2012-01-27)
    With anticipated climate change, tundra fires are expected to occur more frequently in the future, but data on the longer term effects of fire on tundra vegetation composition are scarce. This study therefore addresses ...