Tree regeneration data from the "Partial Cutting Study" at the Dukes Experimental Forest, Upper Peninsula of Michigan

Metadata:

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.00000001

Longitude_Resolution: 0.00000001

Geographic_Coordinate_Units: Decimal Degrees

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137.0000

Denominator_of_Flattening_Ratio: 298.25722210

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview:

Below you will find a list and description of the files included in this data publication.


VARIABLE DESCRIPTION FILE (1)

1. \_variable_descriptions.csv: Comma-separated values (CSV) file containing a list and description of variables found in each file included in this package (if applicable). (A description of these variables is also provided in the metadata below.)

Columns include:

Filename = name of data file
Variable = name of variable
Units = units (if applicable)
Precision = precision (if applicable)
Description = description of variable


DATA FILES (3)

1. \Data\DEF_PCS_Regen_2007to2019.csv: CSV file containing regeneration (trees 1.0 feet tall to < 0.5 inches DBH) tallies by species for Dukes Partial Cutting Study (PCS) subplots in 2007, 2009, and 2019.

Variables include:

StudyNum = Assigned study number in which trees were measured.

CuttingUnit = Assigned cutting unit in which trees were measured.

PSP = Permanent sample plot in which trees were measured.

Treatment = Silvicultural treatment applied to the cutting unit in which trees were measured. Treatment codes are:
CC = Clearcut
DL12 = Diameter Limit, 12-inch
DL22 = Diameter Limit, 22-inch
GrpSel = Group Selection
ImpHvy = Heavy Improvement
ImpLite = Light Improvement
OMD1 = Over-Mature and Defective 1, Single-tree Selection 1
OMD2 = Over-Mature and Defective 2, Single-tree Selection 2
Sel70Pct = 70% Selection

Year = Year in which the trees were measured.

Plot = Plot in which saplings were tallied.

Subplot = Subplots nested within sapling plots
E = east
W = west
N = north
S = south

Species = USDA Forest Health Monitoring species identification code (EMAP 1995). Species codes are defined in \Supplements\DEF_PCS_FHMSpeciesCodes.csv.

Count = Count of each commercial tree species.

Expf = Expansion factor. All regeneration were measured on square milacre subplots.

Notes = Optional comments about the tree or surrounding environment taken by field crews (NA = no note taken).


2. \Data\DEF_PCS_Saplings_2007to2019.csv: CSV file containing species and diameter class for saplings (trees 0.5 inches DBH to < 4.5 inches DBH) found in Dukes PCS sapling plots in 2007, 2009, and 2019.

Variables include:

StudyNum = Assigned study number in which trees were measured.

CuttingUnit = Assigned cutting unit in which trees were measured.

PSP = Permanent sample plot in which trees were measured.

Treatment = Silvicultural treatment applied to the cutting unit in which trees were measured. Treatment codes are:
CC = Clearcut
DL12 = Diameter Limit, 12-inch
DL22 = Diameter Limit, 22-inch
GrpSel = Group Selection
ImpHvy = Heavy Improvement
ImpLite = Light Improvement
OMD1 = Over-Mature and Defective 1, Single-tree Selection 1
OMD2 = Over-Mature and Defective 2, Single-tree Selection 2
Sel70Pct = 70% Selection

Year = Year in which the saplings were measured.

Plot = Plot in which saplings were tallied.

Species = USDA Forest Health Monitoring species identification code (EMAP 1995). Species codes are defined in \Supplements\DEF_PCS_FHMSpeciesCodes.csv. (UNK = unknown)

DClass = Diameter class of tree (inches [in]), measured to the nearest inch. Classes are defined as:
1 = 0.5-1.4 in
2 = 1.5-2.4 in
3 = 2.5-3.4 in
4 = 3.5-4.4 in

Expf = Expansion factor. All saplings were measured on 1- by 0.5-chain plots.

Notes = Optional comments about the tree or surrounding environment taken by field crews (NA = no note taken).


3. \Data\DEF_PCS_Seedlings_2007to2019.csv: CSV file containing presence/absence of seedlings (tree regeneration < 1.0 feet tall) found in Dukes PCS subplots in 2007, 2009, and 2019.

Variables include:

StudyNum = Assigned study number in which seedlings were measured.

CuttingUnit = Assigned cutting unit in which seedlings were measured.

PSP = Permanent sample plot in which seedlings were measured.

Treatment = Silvicultural treatment applied to the cutting unit in which trees were measured. Treatment codes are:
CC = Clearcut
DL12 = Diameter Limit, 12-inch
DL22 = Diameter Limit, 22-inch
GrpSel = Group Selection
ImpHvy = Heavy Improvement
ImpLite = Light Improvement
OMD1 = Over-Mature and Defective 1, Single-tree Selection 1
OMD2 = Over-Mature and Defective 2, Single-tree Selection 2
Sel70Pct = 70% Selection

Year = Year in which the seedlings were measured.

Plot = Plot in which saplings were tallied.

Subplot = Subplots nested within sapling plots.
E = east
W = west
N = north
S = south

Species = USDA Forest Health Monitoring species identification code (EMAP 1995). Species codes are defined in \Supplements\DEF_PCS_FHMSpeciesCodes.csv.

P/A = Presence/Absence of species (1 = species present; 0 = no seedlings of species in the subplot).

Notes = Optional comments about the tree or surrounding environment taken by field crews (NA = no note taken).



SUPPLEMENTAL FILES (7)

1. \Supplements\DEF_PCS_FHMSpeciesCodes.csv: CSV file containing the USDA Forest Health Monitoring species codes, used in this data package, for trees found in the study site PSPs in the Dukes PCS.

Variables include:

FHM_Species = USDA Forest Health Monitoring species identification code (EMAP 1995).

Common_Name = Widely used common name for the tree.

Genus = Genus of the tree.

Species_Name = Species epithet of the tree.


2. \Supplements\DEF_PCS_OverviewMap_1934.pdf: Portable Document Format (PDF) file containing an overview map of the study site from 1934 and illustrates the entire Dukes Experimental Forest at that time, a portion of which was used for the PCS, presented in this data package.


3. \Supplements\DEF_PCS_PlotLocations_2019.csv: CSV file containing latitudes and longitudes estimated in 2019 for all Dukes PCS plot corners (see Process Steps for details on estimation).

Variables include:

Plot Corner = PSP number and the subcardinal direction of the location.
NE = northeast
NW = northwest
SE = southeast
SW = southwest

Coordinate System = Coordinate system in which estimated corner locations were projected.

Lat = Latitude (decimal degrees).

Long = Longitude (decimal degrees).


4. \Supplements\DEF_PCS_RegenHarvActivity_1986to2019.pdf: PDF file containing a list of PCS plots and the dates on which data collection or harvest activities took place.

Variables include:

Study# = Study number assigned to the PSP.

Cutting Unit = Cutting unit number.

Treatment = Assigned silvicultural prescription.

PSP = Permanent Sample Plot number.

Tree Regeneration Data = Years in which saplings, seedlings, and regeneration data was collected on PSPs (as seen in data tables: \Data\DEF_PCS_Saplings_2007to2019.csv; Data\DEF_PCS_Seedlings_2007to2019.csv; and \Data\DEF_PCS_Regen_2007to2019.csv).

Years Harvested = Years in which PSPs were harvested.


5. \Supplements\DEF_PCS_RegenLayout.pdf: PDF file containing the visual layout of a 1-acre PSP (dimensions 3.3 chains by 3 chains) including locations of sapling plots as well as nested regeneration and seedling subplots.


6. \Supplements\DEF_PCS_SiteMap_2019.pdf: PDF file containing 2019 site overview map that contains Dukes PCS plots being presented in this data package and the Control treatment (PSP 1).


7. \Supplements\DEF_PCS_StudyNumberGuide.pdf: PDF file containing a list of Dukes PCS study numbers, cutting units, treatments, and treatment codes that were assigned to the PSPs in which data were collected.

Variables include:

PSP = Permanent sample plot number.

Treatment = Name of treatment.

Treatment Code = Code for treatment.

CU = Cutting unit number.

Study Number = Study number.

Entity_and_Attribute_Detail_Citation:

U.S. Department of Agriculture, Forest Service, Environmental Monitoring and Assessment Program (EMAP). 1995. Forest Health Monitoring Manual, Appendix A. (Rev. No. 0, April, 1995)

Metadata_Reference_Information:

Metadata_Date: 20230608

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: USDA Forest Service, Northern Research Station

Contact_Person: Christel Kern

Contact_Position: Research Forester

Contact_Address:

Address_Type: mailing and physical

Address: 5985 Highway K

City: Rhinelander

State_or_Province: WI

Postal_Code: 54501

Country: USA

Contact_Voice_Telephone: 715-362-1123

Contact_Electronic_Mail_Address: christel.c.kern@usda.gov

Metadata_Standard_Name: FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001.1-1999