Public Data Products

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SPRUCE S1 Bog and SPRUCE Experiment Aerial Photographs

This data set provides a record of the aerial photographs taken of the S1-Bog on the Marcell Experimental Forest and the SPRUCE experimental site within the S1-Bog. New 2019-2020 photos collected from UAV have been added.

Citation: 

Hanson, P.J., M.B. Krassovski, and L.A. Hook. 2015. SPRUCE S1 Bog and SPRUCE Experiment Aerial Photographs. Oak Ridge National Laboratory, TES SFA, U.S. Department of Energy, Oak Ridge, Tennessee, U.S.A. https://doi.org/10.3334/CDIAC/spruce.012

SPRUCE Porewater Chemistry Data for Experimental Plots Beginning in 2013

This data set reports the chemistry of porewater in the SPRUCE plots located in the S1 bog. Sample collection and analyses started in August of 2013 and will continue for the duration of the experiment.Results will be added to this data set and released to the public periodically as quality assurance and publication of results are accomplished. This December 2019 release is an updated and expanded version and replaces the previous release.

Citation: 

Griffiths, N.A., and S.D. Sebestyen. 2016. SPRUCE Porewater Chemistry Data for Experimental Plots Beginning in 2013. Oak Ridge National Laboratory, TES SFA, U.S. Department of Energy, Oak Ridge, Tennessee, U.S.A. https://doi.org/10.3334/CDIAC/spruce.028

SPRUCE Microtopography of Experimental Plots Derived from Terrestrial Laser Scans Beginning in 2016

This dataset consists of maps and summaries of very high resolution (1 cm2) spatial data derived from terrestrial laser scans (TLS) characterizing the microtopography (hummocks and hollows) in 12 SPRUCE experimental plots from 2016-2018. The SPRUCE experiment is located in the S1-Bog of the Marcell Experimental Forest (MEF) near Grand Rapids, Minnesota. Additional data will be added through Summer 2021.

Citation: 

Graham, J.D., N.F. Glenn, L P. Spaete. 2019. SPRUCE Microtopography of Experimental Plots Derived from Terrestrial Laser Scans Beginning in 2016. Oak Ridge National Laboratory, TES SFA, U.S. Department of Energy, Oak Ridge, Tennessee, U.S.A.  https://doi.org/10.25581/spruce.068/1515553

SPRUCE Photosynthesis and Respiration of Rhododendron groenlandicum and Chamaedaphne calyculata in SPRUCE Experimental Plots, 2016

This data set contains biochemical and physiological data collected between June 2016 and May 2017 on two ericaceous shrub species, Chamadaphne calyculata and Rhododendron groenlandicum, at the SPRUCE (Spruce and Peatland Responses under Changing Environments) experiment to assess the response of peatland ecosystems to increases in whole ecosystem temperatures and elevated atmospheric CO2 concentrations.The SPRUCE experiment is located 40 km north of Grand Rapids, MN, in the USDA Forest Service Marcell Experimental Forest.

Citation: 

Ward EJ, Warren JM, McLennan D, Wullschleger SD. 2019. SPRUCE Photosynthesis and Respiration of Rhododendron groenlandicum and Chamaedaphne calyculata in SPRUCE Experimental Plots, 2016. Oak Ridge National Laboratory, TES SFA, U.S. Department of Energy, Oak Ridge, Tennessee, U.S.A. https://doi.org/10.25581/spruce.061/1493603

SPRUCE Ground Observations of Phenology in Experimental Plots, 2018

This data set consists of phenological transition dates, as derived from direct observations of vegetative and reproductive phenology recorded by a human observer, from the SPRUCE experiment during 2018, the third full year of whole-ecosystem warming (Hanson et al. 2017). Both spring and autumn phenological events are included.

Citation: 

Schädel, C., W.R. Nettles, R.R. Heiderman, K. J. Pearson, A. D. Richardson, and P. J. Hanson. 2019. SPRUCE Ground Observations of Phenology in Experimental Plots, 2018. Oak Ridge National Laboratory, TES SFA, U.S. Department of Energy, Oak Ridge, Tennessee, U.S.A. https://doi.org/10.25581/spruce.073/1557731

SPRUCE Terrestrial Laser Scanning of Experimental Plots Beginning in 2015

This data set comprises terrestrial laser scanning (TLS) point clouds from the SPRUCE experimental plots located in the S1-Bog of the Marcell Experimental Forest (MEF) near Grand Rapids, Minnesota. In 2015 the 12 experimental SPRUCE plots were scanned near peak foliage. In 2016, 2017, and 2018 the 12 plots were scanned prior to green up and once near peak foliage. Additional data will be added through Summer 2021.

Citation: 

Graham, J.D., N.F. Glenn, L.P. Spaete. 2019. SPRUCE Terrestrial Laser Scanning of Experimental Plots Beginning in 2015. Oak Ridge National Laboratory, TES SFA, U.S. Department of Energy, Oak Ridge, Tennessee, U.S.A. https://doi.org/10.25581/spruce.067/1515552

SPRUCE Vegetation Phenology in Experimental Plots from Phenocam Imagery, 2015-2018

This dataset consists of PhenoCam data from the SPRUCE experiment from the beginning of whole ecosystem warming (Hanson et al. 2017) in August 2015 through March-31 of 2019, with start- and end-of-season phenological transition dates derived through the end of autumn 2018.

Citation: 

Schädel, C., A.D. Richardson, K. Hufkens, T. Milliman, B. Seyednasrollah, W.R. Nettles, M.B. Krassovski, and P.J. Hanson. 2019. SPRUCE Vegetation Phenology in Experimental Plots from Phenocam Imagery, 2015-2018. Oak Ridge National Laboratory, TES SFA, U.S. Department of Energy, Oak Ridge, Tennessee, U.S.A.  https://doi.org/10.25581/spruce.071/1556082

SPRUCE: Hyperspectral Remote Sensing of Vegetation Communities in SPRUCE Experimental Plots, 2016

This data set consists of reflectance observations from hyperspectral remote sensing of the vegetation communities in SPRUCE experimental study plots located in the S1-Bog. Community vegetation plots in ten chambered treatment plots (6, 19, 11, 20, 4, 13, 8, 16, 10, 17) and 3 unchambered ambient plots (7, 14, 21) were scanned. Spectral data were collected on 22 September 2016 under clear sky conditions beginning at 1:00 p.m. local time.

Citation: 

McPartland, Mara Y., Falkowski, Michael J., Reinhardt, Jason R., Kane, Evan S., Kolka, Randy, Turetsky, Merritt R., Douglas, Thomas A., Anderson, John, Edwards, Jarrod D., Palik, Brian, and Montgomery, Rebecca A. 2019. SPRUCE: Hyperspectral Remote Sensing of Vegetation Communities in SPRUCE Experimental Plots, 2016. Oak Ridge National Laboratory, TES SFA, U.S. Department of Energy, Oak Ridge, Tennessee, U.S.A. https://doi.org/10.25581/spruce.070/1546787

SPRUCE Tritium in Porewater of SPRUCE Experimental Plots and Neighboring Peatlands, and in Groundwater, Stream Water, and Precipitation of the S1 Bog, 2014-2016

This data set reports the tritium concentrations in (1) porewater from selected SPRUCE experimental plots located in the S1 bog and in (2) groundwater, streamwater, and precipitation in the S1 bog watershed, and (3) in porewater from the S2 bog, S3 fen, and Bog Lake fen. All sites are located at the USDA Forest Service, Marcell Experimental Forest (MEF) near Grand Rapids, MN. Samples were collected between June of 2014 and August of 2016.

Citation: 

Visser, A., N.A. Griffiths, and S.D. Sebestyen. 2019. SPRUCE Tritium in Porewater of SPRUCE Experimental Plots and Neighboring Peatlands, and in Groundwater, Stream Water, and Precipitation of the S1 Bog, 2014-2016. Oak Ridge National Laboratory, TES SFA, U.S. Department of Energy, Oak Ridge, Tennessee, U.S.A. https://doi.org/10.25581/spruce.069/1532523

SPRUCE S1 Bog Pretreatment Seasonal Photosynthesis and Respiration of Trees, Shrubs, and Herbaceous Plants, 2010-2015

This data set contains the empirical biochemical, morphological, and physiological data collected between 2010 and 2015 on an herb (Maianthemum trifolium), understory shrubs (Rhododendron groenlandicum, Chamaedaphne calyculata, Kalmia polifolia and Vaccinium angustifolium) and  overstory trees (Picea mariana and Larix laricina) in the S1-Bog at the USDA Forest Service Marcell Experimental Forest (MEF) in northern Minnesota, USA.

Citation: 

Jensen AM, Warren JM, Hook LA, Wullschleger SD, Brice DJ, Childs J, Vander Stel HM. 2018. SPRUCE S1 Bog Pretreatment Seasonal Photosynthesis and Respiration of Trees, Shrubs, and Herbaceous Plants, 2010-2015. Oak Ridge National Laboratory, TES SFA, U.S. Department of Energy, Oak Ridge, Tennessee, U.S.A. https://doi.org/10.3334/CDIAC/spruce.008