uid=HFR,o=lter,dc=ecoinformatics,dc=org all public read doi:10.6073/pasta/b34e520c9f20ddf3f569887fc8f9ce09 Jerry Melillo Richard Bowden John Aber Researcher Mark Castro Researcher Paul Steudler Researcher 2023 English

This study examined the fluxes of greenhouse gases between soils and the atmosphere in the Simulated Hurricane Experiment. The abstract from the published paper (see Methods) is reproduced below. "Fluxes of nitrous oxide (N2O), carbon dioxide (CO2), and methane (CH4) between soils and the atmosphere were measured monthly for one year in a 77-year-old temperate hardwood forest following a simulated hurricane blowdown. Emissions of CO2 and uptake of CH4 for the control plot were 4.92 MT C ha-1 y-1 and 3.87 kg C ha-1 y-1, respectively, and were not significantly different from the blowdown plot. Annual N2O emissions in the control plot (0.23 kg N ha-1 y-1) were low and were reduced 78% by the blowdown. Net N mineralization was not affected by the blowdown. Net nitrification was greater in the blowdown than in the control, however, the absolute rate of net nitrification, as well as the proportion of mineralized N that was nitrified, remained low. Fluxes of CO2 and CH4 were correlated positively to soil temperature, and CH4 uptake showed a negative relationship to soil moisture. Substantial resprouting and leafing out of downed or damaged trees, and increased growth of understory vegetation following the blowdown, were probably responsible for the relatively small differences in soil temperature, moisture, N availability, and net N mineralization and net nitrification between the control and blowdown plots, thus resulting in no change in CO2 or CH4 fluxes, and no increase in N2O emission."

air temperature carbon dioxide hurricane damage methane nitrogen nitrous oxide soil moisture soil temperature LTER controlled vocabulary inorganic nutrients disturbance LTER core area Harvard Forest HFR LTER USA HFR default

This dataset is released to the public under Creative Commons CC0 1.0 (No Rights Reserved). Please keep the dataset creators informed of any plans to use the dataset. Consultation with the original investigators is strongly encouraged. Publications and data products that make use of the dataset should include proper acknowledgement.

Creative Commons Zero v1.0 Universal https://spdx.org/licenses/CC0-1.0.html CC0-1.0 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf052 Tom Swamp Tract (Harvard Forest). Coordinates based on WGS84 datum. -72.20 -72.20 +42.49 +42.49 310 310 meter 1989 1991 complete Information Manager Harvard Forest

324 North Main Street Petersham MA 01366 USA

(978) 724-3302 hf-im@lists.fas.harvard.edu Harvard Forest

324 North Main Street Petersham MA 01366 USA

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For details on methods and results, please see the published paper: Bowden, R., M. C. Castro, J. M. Melillo, P. A. Steudler and J. D. Aber. 1993. Fluxes of greenhouse gases between soils and the atmosphere in a temperate forest following a simulated hurricane blowdown. Biogeochemistry 21: 61-71.

Harvard Forest

324 North Main Street Petersham MA 01366 USA

(978) 724-3302 (978) 724-3595 https://harvardforest.fas.harvard.edu https://ror.org/059cpzx98 pointOfContact The Harvard Forest Long-Term Ecological Research (LTER) program examines ecological dynamics in the New England region resulting from natural disturbances, environmental change, and human impacts. National Science Foundation LTER grants: DEB-8811764, DEB-9411975, DEB-0080592, DEB-0620443, DEB-1237491, DEB-1832210. hf052-01-control.csv control plot hf052-01-control.csv 2235 8bc97e7d4862c3ff5a073ccf99412321 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p05/hf052/hf052-01-control.csv date date YYYY-MM-DD var variable n number of samples se standard error x mean n2o N2O flux in ugN/m2/h microgramPerMeterSquaredPerHour 0.01 real NA missing value co2 CO2 flux in mgC/m2/h milligramPerMeterSquaredPerHour 0.1 real NA missing value ch4 CH4 flux in mgC/m2/h milligramPerMeterSquaredPerHour 0.001 real NA missing value soilt.o soil temperature at 0-2.5 cm depth in degrees C celsius 0.1 real NA missing value soilt.m soil temperature at 2.5-5.0 cm depth in degrees C celsius 0.1 real NA missing value airt air temperature celsius 0.1 real NA missing value soilm.o soil moisture at 2.5-5.0 cm depth in gH2O/gSoil gramsPerGram 0.01 real NA missing value soilm.m soil moisture at 2.5-5.0 cm depth in gH2O/gSoil gramsPerGram 0.01 real NA missing value 51 hf052-02-blowdown.csv blowdown plot hf052-02-blowdown.csv 2236 1f1fdbe076801472b3a7c1ca309c12db 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p05/hf052/hf052-02-blowdown.csv date date YYYY-MM-DD var variable n number of samples se standard error x mean n2o N2O flux in ugN/m2/h microgramPerMeterSquaredPerHour 0.01 real NA missing value co2 CO2 flux in mgC/m2/h milligramPerMeterSquaredPerHour 0.1 real NA missing value ch4 CH4 flux in mgC/m2/h milligramPerMeterSquaredPerHour 0.001 real NA missing value soilt.o soil temperature at 0-2.5 cm depth celsius 0.1 real NA missing value soilt.m soil temperature at 2.5-5.0 cm depth celsius 0.1 real NA missing value airt air temperature celsius 0.1 real NA missing value soilm.o soil moisture at 0-2.5 cm depth in gH2O/gSoil gramsPerGram 0.01 real NA missing value soilm.m soil moisture at 2.5-5.0 cm depth in gH2O/gSoil gramsPerGram 0.01 real NA missing value 51 plot soil short-term measurement microgramPerMeterSquaredPerHour milligramPerMeterSquaredPerHour