Datasets

Data Availability Name Description Objective Dates
DownloadableBaseline Tree Nutrition Data for Long-Term Soil Monitoring PlotsTree nutrition dataDetect changes in soils due to human caused impacts2002-01-01 to 2003-12-31
Description onlyCore Soil ChemistryAs part of a 200-year forest soil monitoring study, soil samples are taken from 5 different locations (three sites in Mt. Mansfield in northern Vermont and two sites in the Lye Brook Wilderness Area in southern Vermont) every 5 years. At each of the five sites 1 50m x 50m plot has been permanently established, with 100 5m x 5m subplots. Samples were taken from the side of the pit that was described, using a knife and trowel. If Oe was sampled, a larger area of soil surface was peeled backward and “mined”. All samples were collected into 60-ounce clear polyethylene sterile bags (Fisher Scientific) and labeled with soil site, soil pit number, and date. Samples collected for mercury analysis were collected using sampling methods that prevent atmospheric contamination. Samples were sent to labs belonging to NRCS, USFS, and UVM for analysis.A 200-year forest soil monitoring study that will aid future efforts to detect changes in forest soil properties, essential plant nutrient, mineral, trace element concentrations, soil morphology and soil taxonomy.2002-06-01 to 2202-06-01
By requestPlot Identifying InformationPlot-level information that will aid in the relocation of plots. In 2002 plots corners coordinates were measured using a Trimble. From these plot corner coordinates the center, northeastern, southeastern, southwestern, and northwestern coordinates of the four quadrants in each of the 100 subplots were calculated.Provide information for relocation of plot quadrants2002-01-01 (ongoing)
DownloadablePlot Visit InformationTracking plot level visit information such as purpose, year, and specific quadrant visited.Tracking plot quadrant visits2002-01-01 (ongoing)
DownloadableRegenerationCount of all seedling and saplings tree species that were under 2 inches in DBH. Counts were done on each of the 10 sampling plots at each site. A 5 m^2 PVC square was placed on the perimeter of each plot and all seedlings whose stems originated in the square were counted. Seedlings were only counted if they had true leaves (More than just cotyledons).2007-01-01 (ongoing)
Description onlySampling ScheduleThis dataset contains the years that each quadrant for each plot was sampled. In addition, there are notes explaining any changes made.Track sampling events for the LTSM 2002-01-01 (ongoing)
By requestSite Identifying InformationWithin the long-term soil monitoring network, there are 5 permanent sites. Three sites were established within the boundaries of Mount. Mansfield within northern Vermont and two were established within the boundaries of the Lye Brook Wilderness Area in southern Vermont.Tracking site-specific information 2002-01-01 (ongoing)
Description onlySoil sample descriptionsSoils were described using NRCS procedures referenced in the Field Book for Describing and Sampling Soils, version 2.0, September, 2002. The following soil physical properties were described, and the numbers in parentheses refer to page numbers in the Field Book referencing that property: Horizon Designation and lower Boundary (pgs 2-2 to 2-6).; Depth of horizon (upper and lower) in centimeters; Matrix color, moist, Munsell notation; Texture (pgs 2-29 to 2-31); Percent rock fragments by volume (shape- pg 2-40, note basic Percent Chart on page 2-9 – some Munsell color books also have a Percent Chart); structure; grade, size, and type (pgs 2-41 to 2-48); consistence, moist (also referred to as Rupture Resistance, pgs 2-49 to 2-50); Redoximorphic features; quantity, size, contrast – and Munsell color (pgs 2-14 to 2-17; see also quantity, size and contrast charts under Mottles on pgs 2-9 to 2-12); Roots (pgs 2-56 to 2-58); other features such as: organic streaks and stains, type of organic material, moisture status, slope percent, aspect and horizons sampled. Soil chemical properties (such as pH) was not recorded in the field since these were analyzed more accurately in the lab at a later date.2002-06-01 (ongoing)
Description onlySoil Sampling Identifying InformationIdentifying information for all soil samples collected during the sampling year.Tracking collected samples2002-01-01 (ongoing)
DownloadableTree Health MeasurementsAssessment of the species and size classes of tree species present on each of the 5 plots. Trees with DBHs greater than 2 inches were measured if they fell within the boundaries of the 50m^2 plot.2002-01-01 (ongoing)
DownloadableUnderstory Herbaceous CoverIn addition to collecting presence/absence of herbaceous species at each plot, beginning in 2012 abundance measure (percent cover). A 5m^2 PVC square was placed on the perimeter or each plot, then all plants whose stem originated in the square were recorded by species and percent cover.Measure herbaceous species abundance per plot.2012-06-01 (ongoing)
DownloadableUnderstory Herbaceous Plant ListTracking presence-absence of all plant species encountered between each of the 5 sites. A survey of each 50m^2 site was conducted in 2002 to identify all plants to species where possible without recording abundance data. In 2007, using the data collected in 2002, an inventory of plants present across each 50m^2 site was completed in addition to other inventory work. In 2012 the protocol was changed and presence/absence was no longer collected. Instead, the protocol switched to an abundance measure (percent cover) at each of the 10 assigned plots per site for that sampling year.Track presence/absence of vegetative understory within Long-Term Soil Monitoring plot network.2002-06-01 to 2007-06-01