Data Set Citation:
When using this data, please cite the data package:
Stoms D.
POD! Change in Percent Urban Land by Hydrodynamic Subregion, Upper San Francisco Estuary, California 1990-2006
stoms.6.5 (https://knb.ecoinformatics.org:443/knb/metacat/stoms.6.5/nceas)
General Information:
Title:POD! Change in Percent Urban Land by Hydrodynamic Subregion, Upper San Francisco Estuary, California 1990-2006
Identifier:stoms.6
Abstract:
Land use is an ultimate driver of many of the stressors on the Upper San Francisco Estuary, but the magnitude and pattern of land use change had not previously been analyzed. I attempted to fill this knowledge gap through a screening-level risk assessment. I compared urban land use within hydrodynamic subregions in 1990, 2000, and 2006. A GIS analysis was performed to calculate the percent of land area within each subregion that was classified as urban and built-up land by the California Farmland Mapping and Monitoring Program (http://www.consrv.ca.gov/dlrp/fmmp/) for those dates.
Keywords:
  • land use change
  • urban land
  • hydrodynamic subregion
Data Table, Image, and Other Data Details:
Metadata download: Ecological Metadata Language (EML) File
Data Table:Table_1_Change in Percent Urban by Subregion.csv ( View Metadata | Download File download)

Involved Parties

Data Set Creators:
Individual:Dr. David Stoms
Organization:NCEAS 12192: Fleishman: Ecosystem analysis of pelagic organism declines in the Upper San Francisco Estuary
Position:Associate Researcher
Address:
Donald Bren School of Environmental Science and Management,
Santa Barbara, California 93106-5131 USA
Phone:
805.893.7655 (voice)
Email Address:
stoms@bren.ucsb.edu
Web Address:
http://www.biogeog.ucsb.edu/
Data Set Contacts:
Individual:Dr. David Stoms
Organization:NCEAS 12192: Fleishman: Ecosystem analysis of pelagic organism declines in the Upper San Francisco Estuary
Position:Associate Researcher
Address:
Donald Bren School of Environmental Science and Management,
Santa Barbara, California 93106-5131 USA
Phone:
805.893.7655 (voice)
Email Address:
stoms@bren.ucsb.edu
Web Address:
http://www.biogeog.ucsb.edu/

Data Set Characteristics

Geographic Region:
Geographic Description:San Francisco Bay-Delta
Bounding Coordinates:
West:  -122.6  degrees
East:  -121.1  degrees
North:  38.6  degrees
South:  37.7  degrees
Time Period:
Begin:
1990
End:
2006

Sampling, Processing and Quality Control Methods

Step by Step Procedures
Step 1:  
Description:

Tabulate area by land use class

For the land use maps from the California Farmland Mapping and Monitoring Program for 1990, 2000, and 2006, after converting to rasters, the ArcGIS TabulateArea tool with the Hydrodynamic Subregions shapefile was used to calculate the area of each land use class. The area was divided by the total land area (excluding open water) in the subregion to convert to percentage.

Data Set Usage Rights

These data may be freely shared within the public scientific domain. They are intended to provide a general estimate of urban land use within the Upper San Francisco Estuary over time as a first level assessment of environmental effects. They are not intended to make any land use or regulatory decisions. The boundaries of hydrodynamic subregions are approximations.
Access Control:
Auth System:knb
Order:denyFirst
Metadata download: Ecological Metadata Language (EML) File