Overstory and understory data from a contemporary reference stand: the Beaver Creek Pinery, Lassen National Forest, CA

Metadata:

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview:

This data publication contains a database available as a Microsoft Access (in \Data\ACCDB) file. Detailed metadata is included in the database. However, this data publication also contains each database table as a comma-delimited ASCII text file (in \Data\CSV).

\Data\ACCDB\BeaverCreekPinery_1998Data.accdb: Microsoft Access database file containing both overstory and understory data measured in the Beaver Creek Pinery in Lassen National Forest, CA. (NOTE: All of the data in this database are also available as individual CSV files - see below).


\Data\CSV\CWD.csv: Comma-delimited ASCII text file containing coarse woody debris measurements for 0.05 acre plots. Variables include:
Id: Primary Key used in Microsoft Access to uniquely identify each record stored in the table
Grid_X: X = last four digits of UTMN, minus the two zeros at end
Grid_Y: X = last four digits of UTME, minus the two zeros at end
Diameter: Midpoint diameter (inches)
Length: Length (feet)

\Data\CSV\INFO_Grid.csv: Comma-delimited ASCII text file containing location information for the 107 points surveyed in this study. Variables include:
XY: A total of 107 points, geo-referenced to an accuracy of 15 centimeters, were surveyed on a 100 x 100 meter grid
Grid_X: X = last four digits of UTMN, minus the two zeros at end
Grid_Y: X = last four digits of UTME, minus the two zeros at end
UTMN: Projected Coordinate System: NAD_1983_UTM_Zone_10N
UTME: Projected Coordinate System: NAD_1983_UTM_Zone_10

\Data\CSV\INFO_PlotSize.csv: Comma-delimited ASCII text file containing a description of the different plot sizes used to measure the trees, seedlings, saplings, understory, and coarse woody debris in this study. Variables include:
Variable: Trees (large and small), saplings, seedlings, understory, CWD
Description: Description of vegetation sampled (size of sample trees) where DBH=diameter at breast height and CWD=course woody debris
PlotSize(ac): Size of plot (acres)
PlotSize(ha): Size of plot (hectares)
PlotRadius(ft): Radius of plot (feet)
PlotRadius(m): Radius of plot (meters)
DateCollected: Description of date(s) collected including month, day, and year

\Data\CSV\INFO_SnagCondCode.csv: Comma-delimited ASCII text file containing a list and description of snag condition codes. Variables include:
Stage: Stages 3-7 (Thomas et al. 1979)
Description: Description of what each state represents (in general terms: 3=Dead; 4=Loose Bark; 5=Clean; 6=Broken above breast height; 7=Decomposed)

\Data\CSV\INFO_TreeCondCode.csv: Comma-delimited ASCII text file containing a list and description of tree condition codes. Variables include:
Code: Tree condition code 0-105
Description: Description of what each condition code represents

\Data\CSV\Seedlings_Saplings.csv: Comma-delimited ASCII text file containing seedling and sapling counts by size class and species for 0.01 acre plots. Variables include:
Grid_X: X = last four digits of UTMN, minus the two zeros at end
Grid_Y: X = last four digits of UTME, minus the two zeros at end
PIPO_sap1: Ponderosa pine saplings: 0-1.5 inches diameter at breast height (DBH)
PIPO_sap2: Ponderosa pine saplings: 1.6-2.5 inches DBH
PIPO_sap3: Ponderosa pine saplings: 2.6-3.5 inches DBH
QUKE_sap1: California black oak saplings: 0-1.5 inches DBH
QUKE_sap2: California black oak saplings: 1.6-2.5 inches DBH
QUKE_sap3: California black oak saplings: 2.6-3.5 inches DBH
PIPO_seed1: Ponderosa pine seedlings: 1-2 feet in height. Note: < 1 foot height = ephemeral (not counted)
PIPO_seed2: Ponderosa pine seedlings: 2-3 feet in height
PIPO_seed3: Ponderosa pine seedlings: 3-4.5 feet in height
QUKE_seed1: California black oak seedlings: 1-2 feet in height
QUKE_seed2: California black oak seedlings: 2-3 feet in height
QUKE_seed3: California black oak seedlings: 3-4.5 feet in height

\Data\CSV\TreeAge.csv: Comma-delimited ASCII text file containing tree age information for those trees chosen to be cored. Variables include:
Id: Primary Key used in Microsoft Access to uniquely identify each record stored in the table
Grid_X: X = last four digits of UTMN, minus the two zeros at end
Grid_Y: X = last four digits of UTME, minus the two zeros at end
Layer: 1A: (Very platy bark, 80+ feet in height [ft.ht.]); 1B: (Platy bark beginning to form, 80+ ft.ht.); 2: (bark with no plates, approximately 50-100 ft.ht.); 3: (20-30 ft.ht.); 4: (< 20 ft.ht., often in dense clumps)
Species: PIPO = Ponderosa pine, QUKE = California black oak
Distance: Distance from grid point to tree (feet)
Azimuth: Azimuth from grid point to tree
TagNo: Tree tag number; Note: tag number not unique. Tag # plus grid number is unique. Trees outside of 1/5 acre plot boundary lack tags.
Height: Height above ground where increment core taken (20 = 7.9 inches or 20 centimeters [cm]; 100 = 39.4 inches or 100 cm; blank means no core taken)
Pith: Y = Yes, N = No; Was pith present?
CrossDated: Y = Yes, N = No; some cores were difficult to cross-date.
1stRingDate: Calendar year of oldest tree ring
RingCount: Number of total tree rings counted; Would equal tree age if increment core hit pith and when corrected for core height
Whorls: Number of whorls on layer 4 trees (Layer 4: less than 20 ft.ht., often in dense clumps)

\Data\CSV\Trees.csv: Comma-delimited ASCII text file containing measurements obtained from each tree within the surveyed plots (large trees: 0.2 acre plots; small trees: 0.05 acre plots). Variables include:
Id: Primary Key used in Microsoft Access to uniquely identify each record stored in the table
Grid_X: X = last four digits of UTMN, minus the two zeros at end
Grid_Y: X = last four digits of UTME, minus the two zeros at end
Species: PIPO = Ponderosa pine, QUKE = California black oak
Status: L = Live, D = Dead
TagNo: Tree tag number for live trees only; Note: tag number not unique. Tag # plus gridpoint number is unique.
DBH: Diameter at breast height (inches).
Height: Total height (feet); live trees - measured only on first tree of each species encountered clockwise from north; snags - all.
HtLC: Height to live crown (feet); measured only on first live tree of each species encountered clockwise from north
MistletoeScore: 0-3 rating (may have used Hawsworth 6 point scale, even though data sheet says 0 to 3); blank assumed to be 0
LiveTreeCondition: See INFO_TreeCondCode
SnagCondition: See INFO_SnagCondCode
SnagNewChar: Y = Yes, N = No; Taken on dead trees only. Y means tree likely killed by 1990 fire or died prior to 1990 fire then charred by 1994 fire; N means tree likely died after 1994 fire, as live wood beneath the bark is generally not charred in a fire.
SnagBrokenTop: Y = Yes, N = No; Take on dead trees only.

\Data\CSV\Understory.csv: Comma-delimited ASCII text file containing cover measurements of litter, bare ground, rock, coarse woody debris, grasses, forbs, and shrubs by individual species for 0.01 acre plots. Variables include:
Id: Primary Key used in Microsoft Access to uniquely identify each record stored in the table
Grid_X: X = last four digits of UTMN, minus the two zeros at end
Grid_Y: X = last four digits of UTME, minus the two zeros at end
Litter: litter, % cover
CWD: coarse woody debris; % cover; CWD = downed woody material with a minimum diameter of 6 inches
Bare: bare ground; % cover
Rock: rock; % cover
Grasses: grasses, % cover
Forbs: other herbaceous plants; % cover
ARMAR: Arctostaphylos manzanita ssp roofii (Rooff's manzanita); % cover
BEAQ: Berberis aquifolium (Oregon grape); % cover
CEIN: Ceanothus integerrimus (deerbrush); % cover
CELE: Ceanothus lemmonii (Lemmon's ceanothus); % cover
CEPR: Ceanothus prostratus (prostrate ceanothus); % cover
OTSH: Other Shrub; % cover
Prunus sp: chokecherry, plum; % cover
Rhamnus sp: buckthorn; % cover
TODI: Toxicodendron diversilobum (Pacific poison oak); % cover

Entity_and_Attribute_Detail_Citation:

Thomas, Jack Ward; Anderson, R.G.; Maser, C.; Bull, E.L. 1979. Snags. Pages 60-77. In: Thomas, Jack Ward [Technical Editor] 1979. Wildlife Habitats in Managed Forests the Blue Mountains of Oregon and Washington. Agriculture Handbook No. 553. U.S. Department of Agriculture, Forest Service. 512 p.

Hawksworth, F.G. 1961. Dwarf mistletoe of ponderosa pine in the Southwest. USDA Forest Service Tech. Bull. No. 1246. 112 p.

\Supplements\BCP_Protocol_for_PSW_plots_1998.pdf: Adobe Acrobat PDF/a file containing 'Protocol for PSW plots, Beaver Creek Pinery, Lassen National Forest, CA-1998' (included in data publication download)

Metadata_Reference_Information:

Metadata_Date: 20210504

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Eric E. Knapp

Contact_Organization: USDA Forest Service, Pacific Southwest Research Station

Contact_Position: Research Ecologist

Contact_Address:

Address_Type: mailing and physical

Address: 3644 Avtech Pkwy.

City: Redding

State_or_Province: CA

Postal_Code: 96002

Contact_Voice_Telephone: 530-226-2555

Contact_Electronic_Mail_Address: eric.e.knapp@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