Prairie Change Analysis 1991-2008


Identification Information:
Citation:
Citation Information:
Originator: Minnesota DNR - Division of Ecological Resources
Publication Date: 2010-11-18 00:00:00.0
Title: Prairie Change Analysis 1991-2008
Publication Information:
Publisher: Minnesota DNR - Division of Ecological Resources
Online Linkage: http://deli.dnr.state.mn.us
Description:
Abstract: This dataset displays the results of a prairie/savanna change analysis study completed in May 2010. The area reviewed consists of 1,521 sites identified by Minnesota County Biological Survey as prairie or savanna habitat prior to 1994 as well as a predetermined buffer area. Data is made up of landuse codes and descriptions for 1991 and 2008 (as determined from aerial photography).
Purpose: Data was developed to assess the current extent and condition of native prairie habitat identified by Minnesota County Biological Survey in 1993 or earlier. Methods and results will be used to develop protocols for future rapid change analysis procedures.
Supplemental Information: Minnesota
Time Period of Content:
Time Period Information:
Single Date/Time:
Calendar Date: 1991-2008
Currentness Reference: Based on air photo dates:<br> 1991 Air Photos (1 meter DOQs)<br> 2008 FSA Color Infrared (CIR) Imagery
Status:
Progress: Complete
Maintenance and Update Frequency: None Planned
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -96.5
East Bounding Coordinate: -89
North Bounding Coordinate: 49.5
South Bounding Coordinate: 43
Keywords:
Theme:
Theme Keyword: Prairie, Change Analysis, Land Use
Place:
Place Keyword: Minnesota, Kittson, Marshall, Pennington, Red Lake, Mahnomen, Clay, Wilkin, Morrison, Grant, Traverse, Benton, Pope, Isanti, Chisago, Big Stone, Sherburne, Anoka, Lac Qui Parle, Washington, Chippewa, Ramsey, Yellow Medicine, Dakota, Renville, Redwood, Rice, Brown, Wabasha, Nicollet, Olmsted, Fillmore
Access Constraints: None
Use Constraints: None
Point of Contact:
Contact Information:
Contact Person Primary:
Contact Person: Daren Carlson
Contact Organization: Minnesota DNR - Division of Ecological Resources
Contact Position: Ecologist / GIS Analyst
Contact Address:
Address Type: Mailing and Physical
Address: 500 Lafayette Rd
City: St Paul
State or Province: MN
Postal Code: 55155
Contact Voice Telephone: 651-259-5079
Contact Electronic Mail Address: daren.carlson@dnr.state.mn.us
Browse Graphic:
Browse Graphic File Name: http://jmaps.dnr.state.mn.us/gis/dp_datasample.jsp?mpid=39000812&ptid=2&fcid=1&lname=Prairie Change Analysis 1991-2008
Native Data Set Environment: ArcView Shapefile
Cross Reference:
Citation Information:
Data Quality Information:
Attribute Value Accuracy Information:
Attribute Accuracy Report: Source table NRA_PCA9108PY3.DBF: Attributes have been spot checked for validity.
Logical Consistency Report: Data are topologically correct using ESRI ArcGIS 9.x software. All polygons are closed and lines intersect where intended.
Completeness Report: The counties of Goodhue, Winona, and Houston were removed from analysis for the following reasons: 1)aerial photography for these counties had heavy shadows, due to both the time of day the photos were taken and the highly dissected terrain of the area, rendering image analysis unfeasible, 2) many sites were located in oak savanna habitat making precise verification of site boundaries difficult due to woody vegetation cover present in 2008 aerial photos but not visible in the 1991 leaf-off imagery and 3) the mean size for these prairie polygons was 7 acres, well below the rest of the state, reducing the accuracy of polygon boundaries.
Positional Accuracy:
Horizontal Positional Accuracy:
Horizontal Positional Accuracy Report: Source layer nra_pca9108py3: Horizontal position based on USGS 1991 and 2008 FSA aerial photography. Accuracy of those imagery sources applies to this data as well.
Vertical Positional Accuracy:
Vertical Positional Accuracy Report: Source layer nra_pca9108py3: Not Applicable
Lineage:
Source Information:
Source Scale Denominator: Source layer nra_pca9108py3: 6000
Process Step:
Process Description: Attribute Lineage for source table NRA_PCA9108PY3.DBF: N/A
Spatial Data Organization Information:
Indirect Spatial Reference: Land use categories
Direct Spatial Reference Method: vector
(mgmg3obj):polygon
(mgmg3til):state
Spatial Reference Information:
Horizontal Coordinate System Definition:
Geographic:
Planar:
Map Projection:
Map Projection Name: Transverse Mercator
(mgmg4par):Not Applicable
Other Projection’s Definition: Not Applicable
Grid Coordinate System:
Grid Coordinate System Name: UTM
Universal Transverse Mercator:
UTM Zone Number: 15
State Plane Coordinate System:
(mgmg4adj):Not Applicable
Planar Coordinate Information:
Coordinate Representation:
Distance and Bearing Representation:
Distance Resolution: Source layer nra_pca9108py3: Horizontal position based on USGS 1991 and 2008 FSA aerial photography. Accuracy of those imagery sources applies to this data as well.
Planar Distance Units: meters
Geodetic Model:
Horizontal Datum Name: NAD83
Ellipsoid Name: GRS1980
Vertical Coordinate System Definition:
Altitude System Definition:
Altitude Datum Name: Not Applicable
Altitude Units: Not Applicable
Depth System Definition:
Depth Datum Name: Not Applicable
Depth Distance Units: Not Applicable
Entity and Attribute Information:
Detailed Description:
Entity Type:
Entity Type Label: nra_pca9108py3.dbf
Entity Type Definition: This attribute table provides detail for the Prairie Change Analysis shapefile.
Attribute:
Attribute Label: BufferDist
Attribute Definition: Buffer scheme applied to original prairie/savanna site. "0"=polygon is inside original MCBS mapped prairie/savanna. "100"=polygon is within the 100 meter buffer of MCBS mapped prairie/savanna sites where only a 100m buffer was assessed. "500"=polygon is within the 500 meter buffer of MCBS mapped prairie/savanna habitat.
Attribute:
Attribute Label: County
Attribute Definition: County Name
Attribute:
Attribute Label: Acres
Attribute Definition: Acres
Attribute:
Attribute Label: Comments
Attribute Definition: Comments
Attribute:
Attribute Label: Chng_Code
Attribute Definition: Code combination of 1991 land use based on air photo and 2008 land use based on airphoto. See "Chng_Text" for detailed description.
Attribute:
Attribute Label: Site
Attribute Definition: Links polygons located inside MCBS mapped prairie/savanna habitat with the unique identifier labled as "Site" within attribute table of MCBS Native Plant Community Layer
Attribute:
Attribute Label: Prairie_id
Attribute Definition: Links polygons located inside MCBS mapped prairie/savanna habitat with the unique identifier labled as "Object ID" within attribute table of MCBS Native Plant Community Layer
Attribute:
Attribute Label: 91_LU_Code
Attribute Definition: 1991 Land Use Code derived from 1991 airphoto. See "91_LU_Text" for detailed description.
Attribute:
Attribute Label: 91_LU_Text
Attribute Definition: 1991 Land Use Text describing "91_LU_Code"
Attribute:
Attribute Label: 08_LU_Code
Attribute Definition: 2008 Land Use Code derived from 2008 airphoto. See "91_LU_Text" for detailed description.
Attribute:
Attribute Label: 08_LU_Text
Attribute Definition: 2008 Land Use Text describing "08_LU_Code"
Attribute:
Attribute Label: Chng_Text
Attribute Definition: Text describing land use changes listed in "Chng_Code"
Overview Description:
Distribution Information:
Distributor:
Contact Information:
Contact Person Primary:
Contact Person: Daren Carlson
Contact Organization: Minnesota DNR - Division of Ecological Resources
Contact Position: Ecologist / GIS Analyst
Contact Address:
Address Type: Mailing and Physical
Address: 500 Lafayette Rd
City: St Paul
State or Province: MN
Postal Code: 55155
Contact Voice Telephone: 651-259-5079
Contact Electronic Mail Address: daren.carlson@dnr.state.mn.us
Resource Description: nra_pca9108py3
Distribution Liability: The Minnesota Department of Natural Resources makes no representation or warranties, express or implied, with respect to the reuse of data provided herewith, regardless of its format or the means of its transmission. There is no guarantee or representation to the user as to the accuracy, currency, suitability, or reliability of this data for any purpose. The user accepts the data as is, and assumes all risks associated with its use. By accepting this data, the user agrees not to transmit this data or provide access to it or any part of it to another party unless the user shall include with the data a copy of this disclaimer. The Minnesota Department of Natural Resources assumes no responsibility for actual or consequential damage incurred as a result of any user reliance on this data.
Standard Order Process:
Digital Form:
Digital Transfer Information:
Format Name: ArcView Shapefile
Format Version Number: Not Applicable
Transfer Size: 1024
Ordering Instructions: See Online Linkage or Distribution Contact
Metadata Reference Information:
Metadata Date: 2010-11-22 10:05:38.0
Metadata Contact:
Contact Information:
Contact Person Primary:
Contact Person: Daren Carlson
Contact Organization: Minnesota DNR - Division of Ecological Resources
Contact Position: Ecologist / GIS Analyst
Contact Address:
Address Type: Mailing and Physical
Address: 500 Lafayette Rd
City: St Paul
State or Province: MN
Postal Code: 55155
Contact Voice Telephone: 651-259-5079
Contact Electronic Mail Address: daren.carlson@dnr.state.mn.us
Metadata Standard Name: Minnesota Geographic Metadata Guidelines
Metadata Standard Version: 1.2
Metadata Extensions:
Online Linkage: http://www.gis.state.mn.us/stds/metadata.htm