SPRUCE Sphagnum Productivity and Community Composition in Experimental Plots, Marcell Experimental Forest, Minnesota, 2016-2025

Description

This dataset reports annual dry matter production of Sphagnum in replicated growth columns, the composition of the moss community, and plot-average Sphagnum productivity. Measurements were made at the Spruce and Peatland Responses Under Changing Environments (SPRUCE) experimental site within the Marcell Experimental Forest in northern Minnesota, USA. Experimental plots underwent whole ecosystem warming and deep peat heating (Hanson et al., 2017). Data are reported for the 2016 - 2025 growing seasons (growing seasons run October to October, e.g. the 2016 growing season was October 2015 to October 2016). These data assess responses of Sphagnum productivity and carbon budget contributions to warming and carbon dioxide (CO₂) enrichment.

Sphagnum productivity was measured in 3.8-cm diameter mesh columns. Three types of Sphagnum were measured:  S. angustifolium/fallax from hummocks (AngFal_Hum), S. angustifolium/fallax from hollows (AngFal_Hol), and S. magellanicum from hummocks (Mag_Hum). The columns containing a known quantity of Sphagnum were installed in the experimental plots in October and new growth was measured one year later. Measurements were made in 10 enclosures comprising five levels of temperature elevation in ambient CO₂ and five levels in elevated CO₂. Measurements also were made in two ambient (no enclosure) plots in 2016-2018. 

This dataset contains three data files in comma-separate values (*.csv) format. Additional metadata are provided: three data dictionaries and a file-level metadata file in comma-separate values (.csv) format and a user guide in PDF (*.pdf) format.

In the September 2026 update to this dataset, the title was updated from SPRUCE Sphagnum Productivity and Community Composition in the SPRUCE Experimental Plots to SPRUCE Sphagnum Productivity and Community Composition in Experimental Plots, Marcell Experimental Forest, Minnesota, 2016-2025 and Basalyga and Weston were added as authors.

Citation

This dataset is available for download at ESS-DIVE, please visit the DOI link in the citation below for access.

Norby, RJ, J Childs, J Basalyga, and D Weston. 2018. SPRUCE Sphagnum Productivity and Community Composition in Experimental Plots, Marcell Experimental Forest, Minnesota, 2016-2025. ORNL Terrestrial Ecosystem Science SFA, ESS-DIVE repository. Dataset. https://doi.org/10.25581/spruce.049/1426474

Posted

Wednesday, March 14, 2018

SPRUCE ID: spruce.049

Public