Data from: Above and belowground responses of four tundra plant functional types to deep soil heating and surface soil fertilization ...

• Main Authors: Wang, Peng, Limpens, Juul, Mommer, Liesje, Van Ruijven, Jasper, Nauta, Ake L., Berendse, Frank, Schaepman-Strub, Gabriela, Blok, Daan, Maximov, Trofim C., Heijmans, Monique M. P. D., Heijmans, Monique M.P.D.
• Format: Dataset
• Language: English
• Published: Dryad 2016
• Subjects: Carex bigelowii; Rhododendron tomentosum; Plant functional types; Eriophorum vaginatum; vegetation composition; Betula nana; active layer thickness; Arctic tundra; Calamagrostis holmii; accelerating thawing; Vaccinium vitis-idaea; root biomass; vertical root distribution; Holocene; Arctagrostis latifolia; nutrient availability; Arctic; Eriophorum; Tundra
• Online Access: https://dx.doi.org/10.5061/dryad.vd129; https://datadryad.org/stash/dataset/doi:10.5061/dryad.vd129

1.Climate warming is faster in the Arctic than the global average. Nutrient availability in the tundra soil is expected to increase by climate warming through 1) accelerated nutrient mobilization in the surface soil layers, and 2) increased thawing depths during the growing season which increases accessibility of nutrients in the deeper soil layers. Both processes may initiate shifts in tundra vegetation composition. It is important to understand the effects of these two processes on tundra plant functional types. 2.We manipulated soil thawing depth and nutrient availability at a Northeast-Siberian tundra site to investigate their effects on above and belowground responses of four plant functional types (grasses, sedges, deciduous shrubs and evergreen shrubs). Seasonal thawing was accelerated with heating cables at ~15 cm depth without warming the surface soil, whereas nutrient availability was increased in the surface soil by adding slow-release NPK fertilizer at ~5 cm depth. A combination of these two ... : 2015.05.18_weighing results abovegroundaboveground biomass of each plant functional type in each treatment2015.04.15_weighing results belowgroundbelowground biomass of each plant functional type in each treatmentplant abundanceplant abundance of each plant functional type in each treatment measured by point quadrat in 2010 and 2013abioticsabiotic factors in each treatment in 2014, including active layer thickness, summer temperature (June-August), annual temperature at different depths, concentrations of NH4, NO3, PO4 and K measured by resin bags.temperature completemonthly average temperature of each treatment from Aug 2011 to Jul 2014 measured at 0cm, 5cm, 15cm, 25cm ...