Soil Carbon and Nitrogen at the Harvard Farm at Harvard Forest since 2015

<para>These data represent baseline soil bulk density and total soil carbon and nitrogen concentrations for the three grazing treatments at Harvard Farm: hay (no grazing), rotational grazing, and intensive grazing. These samples were collected at the beginning of the study, so any differences across plots or treatments are due to inherent soil variability at the site rather than the treatments themselves. These data were collected to establish the starting conditions with which to compare potential treatment effects at later sampling dates.</para> </section> </abstract> <keywordSet> <keyword>agriculture</keyword> <keyword>carbon</keyword> <keyword>disturbance</keyword> <keyword>management</keyword> <keyword>nitrogen</keyword> <keyword>soil organic matter</keyword> <keyword>vegetation dynamics</keyword> <keywordThesaurus>LTER controlled vocabulary</keywordThesaurus> </keywordSet> <keywordSet> <keyword>disturbance</keyword> <keyword>inorganic nutrients</keyword> <keyword>organic matter</keyword> <keywordThesaurus>LTER core area</keywordThesaurus> </keywordSet> <keywordSet> <keyword>Harvard Forest</keyword> <keyword>HFR</keyword> <keyword>LTER</keyword> <keyword>USA</keyword> <keywordThesaurus>HFR default</keywordThesaurus> </keywordSet> <intellectualRights> <section> <para>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.</para> </section> </intellectualRights> <licensed> <licenseName>Creative Commons Zero v1.0 Universal</licenseName> <url>https://spdx.org/licenses/CC0-1.0.html</url> <identifier>CC0-1.0</identifier> </licensed> <distribution> <online> <url function="information">https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf343</url> </online> </distribution> <coverage> <geographicCoverage> <geographicDescription>Harvard Farm (Harvard Forest). Coordinates based on WGS84 datum.</geographicDescription> <boundingCoordinates> <westBoundingCoordinate>-72.18</westBoundingCoordinate> <eastBoundingCoordinate>-72.18</eastBoundingCoordinate> <northBoundingCoordinate>+42.52</northBoundingCoordinate> <southBoundingCoordinate>+42.52</southBoundingCoordinate> <boundingAltitudes> <altitudeMinimum>365</altitudeMinimum> <altitudeMaximum>365</altitudeMaximum> <altitudeUnits>meter</altitudeUnits> </boundingAltitudes> </boundingCoordinates> </geographicCoverage> <temporalCoverage> <rangeOfDates> <beginDate> <calendarDate>2015</calendarDate> </beginDate> <endDate> <calendarDate>2015</calendarDate> </endDate> </rangeOfDates> </temporalCoverage> </coverage> <maintenance> <description> <para>ongoing</para> </description> </maintenance> <contact scope="document"> <positionName>Information Manager</positionName> <organizationName>Harvard Forest</organizationName> <address scope="document"> <deliveryPoint>324 North Main Street</deliveryPoint> <city>Petersham</city> <administrativeArea>MA</administrativeArea> <postalCode>01366</postalCode> <country>USA</country> </address> <phone phonetype="voice">(978) 724-3302</phone> <electronicMailAddress>hf-im@lists.fas.harvard.edu</electronicMailAddress> </contact> <publisher scope="document"> <organizationName>Harvard Forest</organizationName> <address scope="document"> <deliveryPoint>324 North Main Street</deliveryPoint> <city>Petersham</city> <administrativeArea>MA</administrativeArea> <postalCode>01366</postalCode> <country>USA</country> </address> <phone phonetype="voice">(978) 724-3302</phone> <phone phonetype="fax">(978) 724-3595</phone> <onlineUrl>https://harvardforest.fas.harvard.edu</onlineUrl> </publisher> <methods> <methodStep> <description> <section> <title/> <para>The study consists of three treatments: hay (no grazing), rotational grazing, and intensive grazing of cattle in an abandoned golf course adjacent to the Harvard Forest LTER located in Petersham, MA. To establish baseline soil carbon and nitrogen stocks, six soil cores (9.8 cm diameter) were collected from within three previously established vegetation plots in each treatment field. Soil samples were collected in 10 cm depth increments to a depth of 30 cm using a gas-powered auger. Total soil and rock weights were recorded in the field. Samples were homogenized by depth increment, sieved (less than 2 mm), and a subsample was transported back to the University of New Hampshire for total organic carbon and nitrogen analysis by dry combustion on a CN analyzer. Sampling holes were backfilled with remaining soil, marked with a buried metal rebar pin, and GPS locations were recorded. </para> </section> </description> </methodStep> </methods> <project> <title>Harvard Forest Long-Term Ecological Research 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. hf343-01-hf-farm-soil.csv baseline soil data hf343-01-hf-farm-soil.csv 1449 232b2f990b0d8b1e8b2c9b381e471de5 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p34/hf343/hf343-01-hf-farm-soil.csv date date sampled YYYY-MM-DD 1 day NA missing value plot.id plot code plot code NA missing value plot.num plot designation plot designation NA missing value treatment treatment code hay hay field (no grazing) int intensive grazing rot rotational grazing depth depth of mineral soil sampling 0-10 cm 10 cm depth 10-20 cm 20 cm depth 20-30 cm 30 cm depth NA missing value bulk.density grams of soil per volume gramsPerCubicCentimeter 0.01 real NA missing value c.per percentage of total organic carbon per sampled soil depth dimensionless 0.01 real NA missing value n.per percentage of total organic nitrogen per sampled soil depth dimensionless 0.01 real NA missing value 27 conservation soil long-term measurement