Vegetation composition shifts, and in particular, shrub expansion across the Arctic tundra
are some of the most important and widely observed responses of high-latitude ecosystems …

Global climate warming may induce a positive feedback through increasing soil carbon (C)
release to the atmosphere. Although warming can affect both C input to and output from soil …

It is of great importance to understand how terrestrial ecosystems will respond to global
changes. However, most experimental approaches have focused on single factors. In …

Fungi and bacteria are the two principal microbial groups in soil, responsible for the
breakdown of organic matter (OM). The relative contribution of fungi and bacteria to …

Background In a recent framework, Raven et al. New Phytologist 217: 1420-1427.
considered carbon cost of acquiring phosphorus by mycorrhizal and non-mycorrhizal plants …

Soil organic carbon storage in soil carbon models is highly sensitive to microbial carbon use
efficiency (CUE); thus, to reliably predict C storage requires quantifying the response of CUE …

Tree roots not only acquire readily‐usable soil nutrients but also affect microbial
decomposition and manipulate nutrient availability in their surrounding soils, that is …

Background Tall deciduous shrubs are increasing in range, size and cover across much of
the Arctic, a process commonly assumed to increase carbon (C) storage. Major advances in …

Soil carbon-nitrogen (C: N) stoichiometry acts as a control over decomposition and soil
organic matter formation and loss, making it a key soil property for understanding ecosystem …

The consequences of warming-induced 'shrubification'on Arctic soil carbon storage are
receiving increased attention, as the majority of ecosystem carbon in these systems is stored …