Vegetation - Central Sierra Hardwoods [ds41]

File Geodatabase Feature Class

Open this dataset in BIOS
Download this dataset

Tags
habitat type, vegetation data, hardwoods, conifers, Central Sierra Nevada, California, El Dorado County, Amador County, Calaveras County, Tuolumne County, biota


Summary

WHAT THE DATABASE WAS DESIGNED TO DO. The database was designed to examine current forest conditions so that it can be determined if habitat changes have occurred since the 1930's when forest habitat data were collected in the same area by the U.S. Forest Service. HOW THE DATABASE WAS DESIGNED TO BE USED. This data can be used by land managers, consultants, and land owners for research and monitoring.

Description

These data represents the results of vegetation plots in west-slope Sierra Nevada forests. There is accompanying point count surveys for birds (see Central Sierra Hardwood Study - Birds) made at these survey plots. Please be aware that the coordinates of the points displayed in the text data display of this data set are California Teale-Albers NAD27 projection, but that the data point viewer displays these data points and the background layers in California Teale-Albers NAD83 projection.

TIME PERIOD COVERED. These data were collected during 2002 and 2003 between June-August by field crews working for California Department of Fish and Game.

GEOGRAPHIC EXTENT OF THE RECORDS. Vegetation plots extend from El Dorado to Tuolumne counties in the central Sierra Nevada between 2000-6000 ft elevation.

NUMBER OF RECORDS. There are 64 stands with habitat attributes measured from 3-4 0.2-acre sampling plots per stand.

BASE DATA STRUCTURE. The file is a flat table which gives vegetation attributes for each stand. Each stand is represented by two key fields called "Quad" and "Grid" which relate these habitat records to bird survey data collected in 2003 from the same sample stands.

WHAT EACH RECORD REPRESENTS. Each record in the table represents the stand's site attributes, habitat attributes, and California Wildlife Habitat (CWHR) classification type. Average values for each stand represent the grand mean of average values from the 3-4 plots measured at each sample stand or the average of single measurements of attributes from the 3-4 plots measured at each sample stand.

Credits

Use limitations

License: This work is licensed under Creative Commons Attribution 4.0 International License ( https://creativecommons.org/licenses/by/4.0/ ). Using the citation standards recommended for BIOS datasets ( https://www.wildlife.ca.gov/Data/BIOS/Citing-BIOS ) satisfies the attribution requirements of this license.

Disclaimer: The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data.

Extent

West -120.800994 East -119.975973
North 39.006110 South 37.995926

Scale Range
Maximum (zoomed in) 1:5,000
Minimum (zoomed out) 1:150,000,000

ArcGIS Metadata

Topics and Keywords

Themes or categories of the resource biota


Content type Downloadable Data
Export to FGDC CSDGM XML format as Resource Description No

Place keywords Central Sierra Nevada, California, El Dorado County, Amador County, Calaveras County, Tuolumne County

Theme keywords habitat type, vegetation data, hardwoods, conifers

HideTopics and Keywords

Citation

Title Vegetation - Central Sierra Hardwoods [ds41]
Publication date 2004-01-0100:00:00


Presentation formats digital map
FGDC geospatial presentation format vector digital data


HideCitation

Citation Contacts

Responsible party
Organization's name Barry Garrison, Resource Assessment Program, California Department of Fish and Game
Contact's role originator


HideCitation Contacts

Resource Details

Dataset languages English(UNITED STATES)
Dataset character set utf8 - 8 bit UCS Transfer Format


Status completed
Spatial representation type vector


Supplemental information
HOW THE DATA WERE COLLECTED IN THE FIELD. We randomly selected 64 historical plots which were spatially random and located between 2000-6000 ft elevation in the central Sierra Nevada between El Dorado and Tuolumne counties. These plots occurred on private and public lands. The habitat sampling effort we conducted consisted of 3-4 0.2-acre rectangle plots in relatively homogeneous forest stands. Habitat plots were 132 ft long and 66 ft wide (8712 square feet). Within each stand, the first plot (center) was located at the best estimate of the location of the historical plot, and the other 2-3 habitat plots were located 165-576 ft (50-175 m) away on different compass axes 120 degrees apart. The compass direction and distance to the other 0.2-acre plots were randomly selected for sampling. The habitat data gathered from each plot include the number of live stems, and identification of each tree and shrub species. All live stems > 4 inches diameter at breast height (dbh) were measured to determine the species composition and structure of the plot. Measurements were made using standard forest inventory techniques and equipment including clinometers for tree height, biltmore sticks and dbh tapes for tree and snag diameters, belt transects for shrub and log densities, and sighting tubes for tree cover. WHO DID THE DATA COMPILATION. Data was mostly compiled and analyzed by research biologist Stacy Hall with the California Department of Fish and Game BASIS FOR GEOGRAPHIC COORDINATES. Vegetation information from historical plots located in the central Sierra Nevada serves as our source for baseline forest conditions. In the early 1930's, the U.S. Forest Service (USFS) developed a vegetation map for the forests, woodlands, and shrublands of California. The project was known as the vegetation type map (VTM) project, and all VTM data are archived at the University of California, Berkeley. These locations were put into a GIS and GPS to relocate them on the ground for sampling. GENERAL ASSUMPTIONS OF THE DATA. (1) the current sample stands were relocated in the same stands where the historical data were taken. (2) within-stand variances are approximately equal between the historical and current conditions. KNOWN CAVEATS OF THE DATA. (1) it was difficult to accurately and precisely relocate the resampled plots in the same locations as the historical plots because the original maps with the original locations were from the late 1890's and hence of questionable accuracy. (2) there are no estimates of the within-plot variances from the original VTM plots because only one sample was taken at each stand in the 1930's. (3) the historic tree data were collected by diameter classes and not by direct measurements of tree diameters, while direct measurements were used for the current measurements. The data collected from these plots in 2002 and 2003 does, however, represent the current habitat conditions of the sample stands.
Processing environment Microsoft Windows Vista Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.4095


ArcGIS item properties
Name ds41
Location file://\\geodata.\\ds001-099\041-CentralSierraHardwoodStudy-habitat\v1\v1_final\ds41.gdb
Access protocol Local Area Network

HideResource Details

Extents

Extent
Geographic extent
Bounding rectangle
West longitude -120.800994
East longitude -119.975973
North latitude 39.006110
South latitude 37.995926
Extent contains the resource Yes

Extent
Description
ground condition
Temporal extent
Beginning date 2002-06
Ending date 2003-08

Extent
Geographic extent
Bounding rectangle
Extent type Extent used for searching
* West longitude -120.800994
* East longitude -119.975973
* North latitude 39.006110
* South latitude 37.995926
* Extent contains the resource Yes

Extent in the item's coordinate system
West longitude -69302.343100
East longitude 2078.749500
South latitude -1983.425300
North latitude 110018.487400
Extent contains the resource Yes

HideExtents

Resource Points of Contact

Point of contact
Individual's name Esther Burkett
Organization's name California Department of Fish and Wildlife
Contact's role point of contact


Contact information
Phone
Voice (916) 445-3764

Address
Type both
Delivery point 1701 Nimbus Road, Suite A
City Rancho Cordova
Administrative area California
Postal code 95670
e-mail address Esther.Burkett@wildlife.ca.gov

HideContact information


HideResource Points of Contact

Resource Maintenance

Resource maintenance
Update frequency not planned


HideResource Maintenance

Resource Constraints

Constraints
Limitations of use

License: This work is licensed under Creative Commons Attribution 4.0 International License ( https://creativecommons.org/licenses/by/4.0/ ). Using the citation standards recommended for BIOS datasets ( https://www.wildlife.ca.gov/Data/BIOS/Citing-BIOS ) satisfies the attribution requirements of this license.

Disclaimer: The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data.


Legal constraints
Access constraints other restrictions


Other constraints
BIOS users
HideResource Constraints

Spatial Reference

ArcGIS coordinate system
Type Projected
Geographic coordinate reference GCS_North_American_1983
Projection Custom
Coordinate reference details
Projected coordinate system
X origin -16909700
Y origin -8597000
XY scale 10000
Z origin -100000
Z scale 10000
M origin -100000
M scale 10000
XY tolerance 0.001
Z tolerance 0.001
M tolerance 0.001
High precision true
Well-known text PROJCS["Custom",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Albers"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",-4000000.0],PARAMETER["Central_Meridian",-120.0],PARAMETER["Standard_Parallel_1",34.0],PARAMETER["Standard_Parallel_2",40.5],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]

Reference system identifier
* Value 3310
* Codespace EPSG
* Version 6.8(9.2.0)


HideSpatial Reference

Spatial Data Properties

Vector
* Level of topology for this dataset geometry only


Geometric objects
Feature class name ds41
* Object type point
* Object count 0

HideVector


ArcGIS Feature Class Properties
Feature class name ds41
* Feature type Simple
* Geometry type Point
* Has topology FALSE
* Feature count 0
* Spatial index TRUE
* Linear referencing FALSE

HideArcGIS Feature Class Properties


HideSpatial Data Properties

Data Quality

Lineage

Process step
When the process occurred 2013-11-06
Description
Edited metadata by updating point of contact information.


Process contact
Individual's name Sophie King
Organization's name California Department of Fish and Wildlife
Contact's role processor


Contact information


HideProcess step


HideLineage

Geoprocessing history

Process
Date 2021-06-0810:28:15
Tool location c:\program files\arcgis\pro\Resources\ArcToolbox\toolboxes\Conversion Tools.tbx\FeatureClassToFeatureClass
Command issued
Include in lineage when exporting metadata No


Process
Date 2021-06-0810:28:20
Tool location c:\program files\arcgis\pro\Resources\ArcToolbox\toolboxes\Data Management Tools.tbx\Project
Command issued
Include in lineage when exporting metadata No


Process
Date 2021-06-0810:28:24
Tool location c:\program files\arcgis\pro\Resources\ArcToolbox\toolboxes\Data Management Tools.tbx\Rename
Command issued
Include in lineage when exporting metadata No


HideGeoprocessing history

Distribution

Distribution format
* Name File Geodatabase Feature Class


Transfer options
Online source
Location https://wildlife.ca.gov/Data/BIOS
Location http://bios.dfg.ca.gov/
Function performed information

Online source
Location https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/001_099/ds041.zip
Function performed download

HideDistribution

Fields

Details for object ds41
* Type Feature Class
* Row count 0
Definition
Vegetation - Central Sierra Hardwoods [ds41]


Field OBJECTID
* Alias OBJECTID
* Data type OID
* Width 4
* Precision 0
* Scale 0
* Field description
Internal feature number.
* Description source
Esri
* Description of values
Sequential unique whole numbers that are automatically generated.


HideFieldOBJECTID


Field Shape
* Alias Shape
* Data type Geometry
* Width 0
* Precision 0
* Scale 0
* Field description
Feature geometry.
* Description source
ESRI
* Description of values
Coordinates defining the features.


HideFieldShape


Field ID
* Alias ID
* Data type Integer
* Width 4
* Precision 0
* Scale 0
Field description
Unique GIS number to link a point with its data.
HideFieldID


Field QUAD_NUM
* Alias QUAD_NUM
* Data type Integer
* Width 4
* Precision 0
* Scale 0
Field description
Represents the quadrangle number of historic maps on which the historical sample stand was mapped and located.
HideFieldQUAD_NUM


Field QUAD_GRID
* Alias QUAD_GRID
* Data type String
* Width 10
* Precision 0
* Scale 0
Field description
Represents the grid number (alpha-numeric) on historic maps where the historical stand was mapped and located.
HideFieldQUAD_GRID


Field OWNERSHIP
* Alias OWNERSHIP
* Data type String
* Width 15
* Precision 0
* Scale 0
Field description
Land ownership type at the plot site, either private, US Forest Service or a mix of the two.
HideFieldOWNERSHIP


Field FOREST
* Alias FOREST
* Data type String
* Width 15
* Precision 0
* Scale 0
Field description
Name of the National Forest if the plot is within the boundaries of a National Forest.
HideFieldFOREST


Field COMMENTS
* Alias COMMENTS
* Data type String
* Width 30
* Precision 0
* Scale 0
Field description
Usually, location of plot relative to another ownership type.
HideFieldCOMMENTS


Field ELEVATION
* Alias ELEVATION
* Data type Integer
* Width 4
* Precision 0
* Scale 0
Field description
General elevation at plot site.
HideFieldELEVATION


Field WHRHABTYPE
* Alias WHRHABTYPE
* Data type String
* Width 10
* Precision 0
* Scale 0
Field description
Designated CWHR habitat type based on 2002-2003 habitat sampling.
HideFieldWHRHABTYPE


Field WHRCOVRCLS
* Alias WHRCOVRCLS
* Data type String
* Width 10
* Precision 0
* Scale 0
Field description
Designated CWHR stage class based on 2002-2003 habitat sampling.
HideFieldWHRCOVRCLS


Field NUMPLOTS
* Alias NUMPLOTS
* Data type Integer
* Width 4
* Precision 0
* Scale 0
Field description
Number of sample plots in each stand.
HideFieldNUMPLOTS


Field AVEELEVFT
* Alias AVEELEVFT
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Average elevation of sample plots in the stand.
HideFieldAVEELEVFT


Field AVASPECTDG
* Alias AVASPECTDG
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Average aspect in degrees from sample plots.
HideFieldAVASPECTDG


Field AVSLOPEPCT
* Alias AVSLOPEPCT
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Average % slope from the sample plots.
HideFieldAVSLOPEPCT


Field AVE_HT_FT
* Alias AVE_HT_FT
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Average height of live trees from sample plots; trees selected from quarter sections at each plot; grand mean from plot means.
HideFieldAVE_HT_FT


Field AVECONHTFT
* Alias AVECONHTFT
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Average height of live conifer trees from sample plots; trees selected from quarter sections at each plot; grand mean from plot means.
HideFieldAVECONHTFT


Field AVEHWDHTFT
* Alias AVEHWDHTFT
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Average height of live hardwood trees from sample plots; trees selected from quarter sections at each plot; grand mean from plot means.
HideFieldAVEHWDHTFT


Field AVE_DBH_IN
* Alias AVE_DBH_IN
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Average diameter of all live stems > 4 inches diameter at breast height (dbh); grand mean from plot means.
HideFieldAVE_DBH_IN


Field AVCONDBHIN
* Alias AVCONDBHIN
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Average diameter of all live conifer stems > 4 inches diameter at breast height; grand mean from plot means.
HideFieldAVCONDBHIN


Field AVEHWDBHIN
* Alias AVEHWDBHIN
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Average diameter of all live hardwood stems > 4 inches diameter at breast height; grand mean from plot means.
HideFieldAVEHWDBHIN


Field AVE_QMD_IN
* Alias AVE_QMD_IN
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Average quadratic mean diameter (qmd) of all live stems > 4 inches diameter at breast height; grand mean from plot means.
HideFieldAVE_QMD_IN


Field AVECON_QMD
* Alias AVECON_QMD
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Average quadratic mean diameter of all live conifer stems > 4 inches diameter at breast height; grand mean from plot means.
HideFieldAVECON_QMD


Field AVEHWD_QMD
* Alias AVEHWD_QMD
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Average quadratic mean diameter of all live hardwood stems > 4 inches diameter at breast height; grand mean from plot means.
HideFieldAVEHWD_QMD


Field STEMS_ACRE
* Alias STEMS_ACRE
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Number of live stems > 4 inches diameter at breast height per acre; mean from plot values.
HideFieldSTEMS_ACRE


Field CONSTEMACR
* Alias CONSTEMACR
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Number of live conifer stems > 4 inches diameter at breast height per acre; mean from plot values.
HideFieldCONSTEMACR


Field HWDSTEMACR
* Alias HWDSTEMACR
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Number of all hardwood stems > 4 inches diameter at breast height per acre; mean from plot values.
HideFieldHWDSTEMACR


Field BASALFTACR
* Alias BASALFTACR
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Average basal area of all live stems > 4 inches in square feet per acre; mean from plot values.
HideFieldBASALFTACR


Field CONBASLACR
* Alias CONBASLACR
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Average basal area of all conifer stems > 4 inches in square feet per acre; mean from plot values.
HideFieldCONBASLACR


Field HWDBASLACR
* Alias HWDBASLACR
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Average basal area of all live hardwood stems > 4 inches in square feet per acre; mean from plot values.
HideFieldHWDBASLACR


Field AVPCTREOVR
* Alias AVPCTREOVR
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Average % overstory canopy cover in plot; mean from plot values.
HideFieldAVPCTREOVR


Field AVPCTREMID
* Alias AVPCTREMID
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Average % midstory canopy cover in plot; mean from plot values.
HideFieldAVPCTREMID


Field AVPCTREUND
* Alias AVPCTREUND
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Average % understory canopy cover in plot; mean from plot values.
HideFieldAVPCTREUND


Field AVSNAGDBH
* Alias AVSNAGDBH
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Average dbh (diameter at breast height) of all snags > 4 inches dbh and > 10 ft tall; grand mean from plot means.
HideFieldAVSNAGDBH


Field AVESNAGQMD
* Alias AVESNAGQMD
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Average quadratic mean diameter of all snags > 4 inches dbh (diameter at breast height) and > 10 ft tall; grand mean from plot means.
HideFieldAVESNAGQMD


Field SNGBASLACR
* Alias SNGBASLACR
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Average basal area of all snags > 4 inches diameter at breast height and > 10 ft tall in square feet per acre; mean from plot values.
HideFieldSNGBASLACR


Field SNAGS_ACR
* Alias SNAGS_ACR
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Number of all snags > 4 inches diameter at breast height and > 10 ft tall per acre; mean from plot values.
HideFieldSNAGS_ACR


Field SHRUBS_ACR
* Alias SHRUBS_ACR
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Average number of live shrubs per acre; mean from plot values.
HideFieldSHRUBS_ACR


Field AVELOGSACR
* Alias AVELOGSACR
* Data type Double
* Width 8
* Precision 0
* Scale 0
Field description
Average number of logs per acre; mean from plot values.
HideFieldAVELOGSACR


Field ELEV_INDEX
* Alias ELEV_INDEX
* Data type Integer
* Width 4
* Precision 0
* Scale 0
Field description
Code for the elevation of the plot given in 1,000 foot increments
List of values
Value 2
Description 2,000 to 2,999 feet elevation


Value 3
Description 3,000 to 3,999 feet elevation


Value 4
Description 4,000 to 4,999 feet elevation


Value 5
Description 5,000 to 5,999 feet elevation


Value 6
Description 6,000 to 6,100 feet elevation


HideFieldELEV_INDEX


Field PLOT_NUM
* Alias PLOT_NUM
* Data type Integer
* Width 4
* Precision 0
* Scale 0


HideFieldPLOT_NUM


Field UNIQUE_ID
* Alias UNIQUE_ID
* Data type String
* Width 10
* Precision 0
* Scale 0


HideFieldUNIQUE_ID


HideDetails for objectds41


HideFields

Metadata Details

Metadata language English(UNITED STATES)
Metadata character set utf8 - 8 bit UCS Transfer Format


Scope of the data described by the metadata dataset
Scope name * dataset


* Last update 2021-06-08


ArcGIS metadata properties
Metadata format ArcGIS1.0
Standard or profile used to edit metadata FGDC


Created in ArcGIS for the item 2021-06-0810:28:18
Last modified in ArcGIS for the item 2021-06-0810:28:14


Automatic updates
Have been performed Yes
Last update 2021-06-0810:28:14


HideMetadata Details

Metadata Contacts

Metadata contact
Individual's name Esther Burkett
Organization's name California Department of Fish and Wildlife
Contact's role point of contact


Contact information
Phone
Voice (916) 445-3764

Address
Type
e-mail address Esther.Burkett@wildlife.ca.gov

HideContact information


HideMetadata Contacts

Metadata Maintenance

Maintenance
Update frequency not planned


HideMetadata Maintenance