Details and Metadata
Printer-friendly version View XML version Download Ecological Metadata Language file
Methods
The methods followed in the creation of the dataset, including description of field, laboratory and processing steps, and quality control procedures
Current Methods
Plot Establishment
Started: 2013-01-01Three pairs of 10 m x 10 m permanent plots were established in two unique locations. The two locations are characterized by relatively level terrain with a mixed oak overstory. The paired plots are separated from one another by a 5m buffer. The unfenced and fenced treatments were randomly assigned to the plots at each location. Fenced treatment plots were enclosed by a 2.5m-tall fence. A small (~25cm x 25cm) hole was cut at ground level on each side of the fence to allow smaller animals access to the fenced area. To permanently identify the unfenced plots, all four corners were marked with metal fence posts. A corner of origin was identified (to facilitate locating trees, saplings, etc. in the following years using a grid system). Sampling occurs in the summer, ideally in July, on the year of installation and every 5 years afterwards.
Instrumentation: compass, GPS
Quality Control Measures: GPS points taken at plot corners.
Sapling Layer
Started: 2013-01-01All individuals whose growth habits are designated as “tree” by the New York Flora Atlas, who are between 0.5 and 2 m tall with at least 50% of their stem(s) emerging from the ground inside of the plot will be evaluated in the sapling layer the year of exclosure installation and every 5 years afterwards. Each stem that emerges from the ground at a distinct location is considered a sapling. Saplings are tagged and assigned a number. The coordinate position (X and Y distance from the designated “origin”, in meters) is measured, primarily so that researchers can find saplings whose tags have fallen off between monitoring rounds. The presence/absence of browse, species, and undisturbed height (cm) to the tallest bud (without stretching the shoot) are measured.
Quality Control Measures: Data is proofread two times after entering.
Dataset Fields
Detailed documentation of the fields comprising the dataset, including the type of measurement, units where applicable, and any controlled vocabularies or code lists present in the data
Field Name Caption Description Additional Information Plot Plot ID The identification code for a plot.
Measurement type: Nominal Treatment Treatment Type Whether the sapling is in an exclosed or unexclosed plot
Measurement type: Nominal Treatment_Number Treatment Number Numeric code for unexclosed/exclosed
Measurement type: Nominal
Treatment Number
+ showAppears in data as Meaning of code 1 unfenced exclosure 2 fenced exclosure Sapling_ID_Number Sapling ID Number Sapling Identification Number. -999 indicates no saplings in the plot in question.
Measurement type: Nominal Species Species The species of sapling
Measurement type: Nominal
Sapling Species (WPR)
+ showAppears in data as Meaning ACSA silver maple (Acer saccharinum) - View ITIS Record BELE sweet birch (Betula lenta) - View ITIS Record QUAL white oak (Quercus alba) - View ITIS Record ACRU red maple (Acer rubrum) - View ITIS Record QUSP Custom Species Code HASP Custom Species Code ITIS_Code Integrated Taxonomic Information System code The Integrated Taxonomic Information System code for the species of a sapling
Measurement type: Nominal XCO Grid X coordinate Distance of the sapling from the origin (a selected corner of the plot) along x axis
Measurement type: Interval
Unit: unavailable
Precision: 0.1YCO Grid Y Coordinate Distance of the sapling from the origin (a selected corner of the plot) along y axis
Measurement type: Interval
Unit: unavailable
Precision: 0.1Study_Year Study year number the number of years after the beginning of the study that the sapling was checked
Measurement type: Ratio
Units: year
Precision: 1Height Sapling height Height to tallest bud
Measurement type: Ratio
Unit: unavailableBrowse Deer browse presence/absence Whether or not deer browse was present on the sapling in question
Measurement type: Nominal
Unit: unavailableNotes Notes Notes
Measurement type: Nominal
Unit: unavailableMeasurement_Date Measurement Date The date that the measurements were taken
Measurement type: DateTime
Unit: unavailable
Date/Time Format: MM/DD/YYYYMissing Value Codes Missing Value Codes These codes will appear in the data for missing values instead of a blank cell.
Measurement type: Nominal
Missing Value Codes
+ showAppears in data as Meaning of code -999 There is no extant data; null. -555 There should be data but it is missing. Sampling Equipment
Equipment and software used to collect data, including how that equipment was used.
No sampling equipment recorded for this dataset
Site Characteristics
The spatial extent of the dataset site coverage, and descriptions of the spatial extent and context for the data collection
No site characteristics recorded for this dataset