histlu200408

Frequently-anticipated questions:

• What does this data set describe?
  1. How should this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• How was the data set created?
  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
  3. What similar or related data should the user be aware of?
• How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
  5. How consistent are the relationships among the data, including topology?
• How can someone get a copy of the data set?
  1. Are there legal restrictions on access or use of the data?
  2. Who distributes the data?
  3. What's the catalog number I need to order this data set?
  4. What legal disclaimers am I supposed to read?
  5. How can I download or order the data?
• Who wrote the metadata?

What does this data set describe?

1. How should this data set be cited?

   Scott E. Phillips, Patrick A. Kelly, and Daniel F. William, 2004-09-29, histlu200408:.

   Online Links:

   • <http://esrp.csustan.edu/gis>

   This is part of the following larger work.

   Patrick A. Kelly, Scott E. Phillips, and Daniel F. Will, In Press, Documenting Ecological Change in Time and Space: The San Joaquin Valley of California: UC Press, Berkeley, CA.

   Other_Citation_Details:

   in Mammalian Diversification: From Chromosomes to Phylogeography University of California, Berkeley (pp. 57-78, In press)

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -122.516853

   East_Bounding_Coordinate: -118.429511

   North_Bounding_Coordinate: 38.026002

   South_Bounding_Coordinate: 34.474789

3. What does it look like?

   figure02.jpg (JPEG)

   Agricultural land conversion in the San Joaquin Valley, pre-European settlement to 2000.

4. Does the data set describe conditions during a particular time period?

   Beginning_Date:

   Ending_Date: 2004

   Currentness_Reference: ground condition

5. What is the general form of this data set?

   Geospatial_Data_Presentation_Form: vector digital data

6. How does the data set represent geographic features?
   1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • G-polygon (12791)

   2. What coordinate system is used to represent geographic features?

      The map projection used is Albers Conical Equal Area.

      Projection parameters:

      Standard_Parallel: 34.000000

      Standard_Parallel: 40.500000

      Longitude_of_Central_Meridian: -120.000000

      Latitude_of_Projection_Origin: 0.00000

      False_Easting: 0.000000

      False_Northing: -4000000.000000

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.001024
      Ordinates (y-coordinates) are specified to the nearest 0.001024
      Planar coordinates are specified in meters

      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.400000.
      The flattening of the ellipsoid used is 1/294.978698.
      

7. How does the data set describe geographic features?

   histlu200408

   FID

   Internal feature number. (Source: ESRI)

   Sequential unique whole numbers that are automatically generated.

   Shape

   Feature geometry. (Source: ESRI)

   Coordinates defining the features.

   AREA

   area in meters square

   PERIMETER

   perimeter in meters

   HISTLU_CPE

   HISTLU_C_1

   POT_LU

   LU1885

   Estimated natural communities and land use around 1885

   LU1912

   Estimated natural communities and land use around 1912

   LU1945

   Estimated natural communities and land use around 1945

   LU1977

   Estimated natural communities and land use around 1977

   LU2004

   Estimated natural communities and land use around 2000

   DIST

   Entity_and_Attribute_Overview:

   Land cover is represented at a very general community level (grasslands, saltbush scrub, water, wetlands, Valley oak woodland, riparian) and developed land use is in two broad categories (urban, irrigated agriculture).

Who produced the data set?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Scott E. Phillips, Patrick A. Kelly, and Daniel F. Williams, California State University, Stanislaus, Endangered Species Recovery Program

2. Who also contributed to the data set?

   CSU Stanislaus, Endangered Species Recovery Program

3. To whom should users address questions about the data?
   CSUS/ESRP
   c/o Scott Phillips
   GIS Analyst
   

   gis@esrp.csustan.edu
   

Why was the data set created?

To prepare illustrations and data for publications related to changes in the San Joaquin Valley over time

How was the data set created?

1. From what previous works were the data drawn?

   kuchler (source 1 of 11)

   Endangered Species Recovery program and Bureau of Reclamation, 1999-01-01, Natural Vegetation of Central California based on Kuchler (1977).:.

   Online Links:

   • <http://esrpweb.csustan.edu/gis/metadata/kuchler_sjv.html>

   Other_Citation_Details:

   Data used in the Recovery Plan for Upland Species of the San Joaquin Valley of California, FWS, 1998.

   This is part of the following larger work.

   Daniel F. Williams, Ellen A. Cypher, Patrick A. Kelly, Ka, 1998, Recovery plan for upland species of the San Joaquin Valley, California: U.S. Fish and Wildlife Service, Sacramento, CA.

   Online Links:

   • <http://esrpweb.csustan.edu/publications/pubhtml.php?doc=sjvrp&file=cover.html>

   Type_of_Source_Media: online

   Source_Scale_Denominator: 1000000

   Source_Contribution: Base of pre-European land cover

   Hallmedscale (source 2 of 11)

   Hall, W. H., 1886, Topographic and Irrigation Maps of San Joaquin Valley, Sheets 1-4..

   Other_Citation_Details:

   Obtained from the Water Resources Archives, University of California, Berkeley.

   Type_of_Source_Media: paper

   Source_Scale_Denominator: 126720

   Source_Contribution:

   Provided location of historical wetlands and irrigated farmland around 1885

   Piemeisel (source 3 of 11)

   Piemeisel, R. L., and F. R. Lawson, 1937, Types of Vegetation in the San Joaquin Valley of California and Their Relation to Beet Leafhopper.

   Other_Citation_Details: Copy provided by Ellen Cypher, CSUS/ESRP

   Type_of_Source_Media: paper

   Source_Scale_Denominator: 2500000

   Source_Contribution:

   Provided general map of scrub lands with information on how it was mapped with higher resolution map sources.

   recon_midsjv (source 4 of 11)

   Holmes, L. C., E. C. Eckmann, J. W. Nelson, 1919, Soil map, reconnaissance survey, Middle San Joaquin Valley sheet, California.

   Other_Citation_Details: Obtained from personal files of Scott Phillips

   Type_of_Source_Media: paper

   Source_Scale_Denominator: 126720

   Source_Contribution:

   Used along with Piemeisel source for location of scub types and also used for the location of urban areas shown on the soil base map.

   recon_uppsjv (source 5 of 11)

   Nelson, J. W., W. C. Dean, and E. C. Eckma, 1921, Soil map, reconnaissance survey, Upper San Joaquin Valley sheet, California..

   Other_Citation_Details: Obtained from personal files of Scott Phillips

   Type_of_Source_Media: paper

   Source_Scale_Denominator: 126720

   Source_Contribution:

   Used along with Piemeisel source for location of scub types and also used for the location of urban areas shown on the soil base map.

   recon_lowsjv (source 6 of 11)

   Nelson, J. W., J. E. Guernsey, L. C. Holme, 1918, Soil map, reconnaissance survey, Lower San Joaquin Valley sheet, California.

   Other_Citation_Details: Obtained from personal files of Scott Phillips

   Type_of_Source_Media: paper

   Source_Scale_Denominator: 126720

   Source_Contribution:

   Used along with Piemeisel source for location of scub types and also used for the location of urban areas shown on the soil base map.

   irr1912 (source 7 of 11)

   U.S. Department of Agriculture, Office of Experiment Stations (USDA), 1912, Irrigation map of Central California: to accompany report on the irrigation resources of Central California.

   Other_Citation_Details:

   Obtained from the Water Resources Archives, University of California, Berkeley.

   Type_of_Source_Media: paper

   Source_Scale_Denominator: 500000

   Source_Contribution: Provided the location of irrigated lands around 1912

   USBR1949 (source 8 of 11)

   Bureau of Reclamation, 1949, Water Resources Development:.

   This is part of the following larger work.

   Bureau of Reclamation, 1949, Central Valley basin; a comprehensive report on the development of the water and related resources of the Central Valley basin for irrigation, power production and other beneficial uses in California, and comments by the State of California and Federal agencies: U.S. Govt. Print. Office, Washington, DC.

   Type_of_Source_Media: paper

   Source_Scale_Denominator: 1000000

   Source_Contribution:

   Provided the extent of irrigated farmland and some urban lands around 1945

   USGSLULC (source 9 of 11)

   U.S. Geological Survey, 1990, Land Use Land Cover (LULC).

   Online Links:

   • <http://edc.usgs.gov/geodata/>

   Type_of_Source_Media: online

   Source_Scale_Denominator: 250000

   Source_Contribution:

   Provided the extent of irrigated farmland and urban lands around 1977

   ESRPLULC (source 10 of 11)

   California State University, Stanislaus, Endangered Species Recovery Pro, 2004-07-10, Land use and land cover of the San Joaquin Valley of California and surrounding areas.

   Online Links:

   • <http://esrp.csustan.edu/gis/lulc/>

   Type_of_Source_Media: online

   Source_Scale_Denominator: 100000

   Source_Contribution: Provided current land cover and land use

   gapjepson (source 11 of 11)

   University of California Santa , California Gap Analysis, 1996, Jepson Regions of California.

   Online Links:

   • <http://www.biogeog.ucsb.edu/projects/gap/gap_data.html>

   Type_of_Source_Media: online

   Source_Scale_Denominator: 100000

   Source_Contribution: Used to define the San Joaquin Valley area of analysis

2. How were the data generated, processed, and modified?

   Date: 2001 (process 1 of 9)

   Establish base of historical land cover based on re-defined attributes of the Kuchler data

   Data sources used in this process:

   • kuchler

   Date: 2001 (process 2 of 9)

   Edit the initial data using the Hall 1885 medium scale irrigation maps for the location of historical wetlands, Tulare Lake, Summit Lake, Buena Vista Lake, and Kern Lake.

   Data sources used in this process:

   • Hallmedscale

   Date: 2004 (process 3 of 9)

   Edit the initial data using the Piemeisel map along with reconnaissance soil surveys for the location of historical scrub lands unmapped in the initial data.

   Data sources used in this process:

   • Piemeisel
   • recon_midsjv
   • recon_uppsjv
   • recon_lowsjv

   Date: 2004 (process 4 of 9)

   Develop a layer showing the extent of irrigated lands around 1912 using USDA data and add in the estimated extent of urban areas using reconnaissance soil survey base maps.

   Data sources used in this process:

   • irr1912
   • recon_midsjv
   • recon_uppsjv
   • recon_lowsjv

   Date: 2004 (process 5 of 9)

   Develop a layer showing the extent of irrigated lands and some urban lands around 1945 using map in USBR report.

   Data sources used in this process:

   • USBR1949

   Date: 2001 (process 6 of 9)

   Develop a layer showing the extent of urban and irrigated farmland around 1977 using USGS LULC data

   Data sources used in this process:

   • USGSLULC

   Date: 2004 (process 7 of 9)

   Derived a layer of irrigated agricultre and urban areas using ESRP land use and land cover data

   Data sources used in this process:

   • ESRPLULC

   Date: 2004 (process 8 of 9)

   Used Arc/Info overlay analysis (UNION) to combine layers and assign land use/land cover attributes for potential land cover and land cover during subsequent time frames.

   Date: 2004 (process 9 of 9)

   Clipped data to boundary of the Great Central Valley region of California (UCSB, 1996) south of latitude 38 N

   Data sources used in this process:

   • gapjepson

3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

1. How well have the observations been checked?

2. How accurate are the geographic locations?

3. How accurate are the heights or depths?

4. Where are the gaps in the data? What is missing?

5. How consistent are the relationships among the observations, including topology?

   Shapefile converted from ARC/INFO coverage with polygon topology. Minimum mapping unit is 10 ha

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: None

Use_Constraints:

Permission is granted to use the data for any personal or academic purposes as long as notification of use is sent to sphillips@esrp.csustan.edu and derived products are clearly credited with Scott Phillips, CSU Stanislaus, ESRP. For commercial use, contact CSU Stanislaus, ESRP: info@esrp.csustan.edu.

1. Who distributes the data set? (Distributor 1 of 1)
   CSUS/ESRP
   c/o Scott Phillips
   GIS Analyst
   Not given
   Fresno, CA

   Not given (voice)
   gis@esrp.csustan.edu
   

2. What's the catalog number I need to order this data set?

   Downloadable Data

3. What legal disclaimers am I supposed to read?

   No warranty, expressed or implied is made by the ESRP regarding the utility of the data, nor shall the act of distribution constitute any such warranty. These data are geographic illustrations and do not represent legal boundaries.

4. How can I download or order the data?
   • Availability in digital form:

     Data format:	Size: 10.818

   • Cost to order the data:

5. What hardware or software do I need in order to use the data set?

   Software capable of reading ESRI Shapefiles. Specifications for file format are available from: <http://www.esri.com/software/opengis/openpdf.html>. Data may be distributed in Zip compressed format. Softwrae and source code for uncompressing files is available from <http://www.info-zip.org/UnZip.html>.

Who wrote the metadata?

Dates:

Last modified: 19-Sep-2005

Metadata author:

CSU Stanislaus, Endangered Species Recovery
c/o Scott Phillips
GIS Analyst
Not listed
Fresno, CA 93727
US

not listed (voice)
gis@esrp.csustan.edu

Metadata standard:

FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Metadata extensions used:

• <http://www.esri.com/metadata/esriprof80.html>