Data from: Draining the pool? Carbon storage and fluxes in three alpine plant communities ...

• Main Authors: Sørensen, Mia Vedel, Strimbeck, Richard, Nystuen, Kristin Odden, Kapas, Rozalia Erzsebet, Enquist, Brian J., Graae, Bente Jessen
• Format: Dataset
• Language: English
• Published: Dryad 2018
• Subjects: heath; Tundra; Salix; Soil carbon; Gross Ecosystem Photosynthesis; CO2; Ecosystem Respiration; net ecosystem exchange; Carbon; meadow; Empetrum; Arctic; Norway
• Online Access: https://dx.doi.org/10.5061/dryad.1n50j; https://datadryad.org/stash/dataset/doi:10.5061/dryad.1n50j

Shrub communities have expanded in arctic and alpine tundra during recent decades. Changes in shrub abundance may alter ecosystem carbon (C) sequestration and storage, with potential positive or negative feedback on global C cycling. To assess potential implications of shrub expansion in different alpine plant communities, we compared C fluxes and pools in one Empetrum-dominated heath, one herb- and cryptogam-dominated meadow, and one Salix-shrub community in Central Norway. Over two growing seasons, we measured Gross Ecosystem Photosynthesis, Ecosystem Respiration (ER), and C pools for above-ground vegetation, litter, roots, and soil separated into organic and mineral horizons. Both the meadow and shrub communities had higher rates of C fixation and ER, but the total ecosystem C pool in the meadow was twice that of the shrub community because of more C in the organic soil horizon. Even though the heath community had the lowest rates of C fixation, it stored one and a half times more C than the shrub ... : Carbon and Nitrogen storage and CO2 fluxes in alpine plant communitiesField data of C and N pools (in above-ground vegetation, litter, roots, and soil separated into organic and mineral horizons) and CO2 fluxes (including Net Ecosystem Exchange, Ecosystem Respiration and Gross Ecosystem Photosynthesis) and the environment (such as light, moisture, and air, surface, and soil temperature) during measurements. The data is processed in R core Team 2015.Data_carbon_budget_ECOSYSTEMS_Dryad_submission_08-04-2017.xlsx ...