Ecoregions of Iowa

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: James M. Omernick, Glenn E. Griffith, Suzanne M. Pierson

Publication_Date: 05/01/93

Title: Ecoregions of Iowa

Geospatial_Data_Presentation_Form: vector digital data

Publication_Information:

Publication_Place: None

Publisher: US Environmental Protection Agency

Online_Linkage:

<ftp://ftp.igsb.uiowa.edu/gis_library/IA_State/Biologic_Ecologic/ecoregions.zip>

Description:

Abstract:

The ten ecoregions covering Iowa are part of a national ecoregion map that provides a geographic framework for research, management, and assessment of natural resources. One of the primary applications of the ecoregion map is the development of biological criteria for streams and rivers of Iowa.

Purpose:

This digital, geographically referenced data set was developed by the Iowa Department of Natural Resources to carry out agency responsibilities related to management, protection, and development of Iowa's natural resources.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 04/03/01

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -96.685425

East_Bounding_Coordinate: -90.071340

North_Bounding_Coordinate: 43.556505

South_Bounding_Coordinate: 40.329140

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: None

Access_Constraints: None

Use_Constraints: None

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Tom Wilton

Contact_Organization: Iowa Department of Natural Resources

Contact_Address:

Address: 502 E. 9th St.

City: Des Moines

State_or_Province: IA

Postal_Code: 50319

Native_Data_Set_Environment:

Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 8.3.0.800

Data_Quality_Information:

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

USGS 1:250,000-scale topographic maps were used as the base maps for delineating boundaries. For more information on coverage development, refer to the article, "Ecoregions and Subregions of Iowa: A Framework for Water Quality Assessment and Management" in the Journal for the Iowa Academy of Science, 101(1):5-13, 1994.

Lineage:

Source_Information:

Source_Scale_Denominator: None

Type_of_Source_Media: Electronic

Process_Step:

Process_Description: None

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: P:\Metadata\ia_state\Ecoregions.xml

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: G-polygon

Point_and_Vector_Object_Count: 10

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator

Universal_Transverse_Mercator:

UTM_Zone_Number: 15

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.999600

Longitude_of_Central_Meridian: -93.000000

Latitude_of_Projection_Origin: 0.000000

False_Easting: 500000.000000

False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.001024

Ordinate_Resolution: 0.001024

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137.000000

Denominator_of_Flattening_Ratio: 298.257222

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: ecoregions

Attribute:

Attribute_Label: FID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: ECOCODE

Attribute:

Attribute_Label: ECOREGION

Attribute:

Attribute_Label: SUBECOCODE

Attribute:

Attribute_Label: SUBREGION

Attribute:

Attribute_Label: LANDFORM

Attribute:

Attribute_Label: ELEVATION

Attribute:

Attribute_Label: RELIEF

Attribute:

Attribute_Label: SURFICIAL

Attribute:

Attribute_Label: SOILORDER

Attribute:

Attribute_Label: SOILGROUP

Attribute:

Attribute_Label: SOILASSOCN

Attribute:

Attribute_Label: PRECIPITAT

Attribute:

Attribute_Label: FREEZEFREE

Attribute:

Attribute_Label: POTNATVEG

Attribute:

Attribute_Label: LAND_USE

Overview_Description:

Entity_and_Attribute_Overview:

EcoCode: 2-digit (Level 3) code for the ecoregion

Ecoregion: name of the ecoregion

SubecoCode: 3-digit code (Level 4) for the subregion. If there are no subregions, this is the 2-digit (Level 3) code for the ecoregion

Subregion: name of the subregion

Landform: description of types of plains or hills.

Elevation: range of elevation, in feet

Relief: range of change in elevation, in feet.

Surficial: surficial materials, general type of soil

SoilOrder: name of Soil Order classification

Soil Group: name of Soil Great Group classification

SoilAssocn: name of Soil Association

Precipitat: range of annual precipitation, in inches

FreezeFree: range of number of freeze-free days per year

PotNatVeg: potential natural vegetation

LandUse: general land use or land cover of the region

None

Distribution_Information:

Distributor:

Resource_Description: Ecoregions

Distribution_Liability:

This digital, geographically referenced data set was developed by the Iowa Department of Natural Resources to carry out agency responsibilities related to management, protection, and development of Iowa's natural resources. It resides in the Natural Resources Geographic Information System library. Although efforts have been made to make it useful to the Department, the Department assumes no responsibility for errors in the information. Similarly the Department assumes no responsibility for the consequences of inappropriate uses or interpretations of the data made by anyone to whom this data has been made available. The Department bears no responsibility to inform users of any changes made to this data. Anyone using this data is advised that precision implied by the coverage may far exceed actual precision. Comments on this data are invited and the Department would appreciate that documented errors be brought to staff attention. The development of the coverages in the NRGIS Library represents a major investment of staff time and effort. As a professional responsibility, we expect that the Iowa DNR will receive proper credit when you utilize these GIS coverages and that the original documentation will remain with any redistribution of these coverages.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Version_Date: 04/03/01

Transfer_Size: 0.243

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

<ftp://ftp.igsb.uiowa.edu/gis_library/IA_state/Biologic_Ecologic/Ecoregions.zip>

Metadata_Reference_Information:

Metadata_Date: 20031104

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Iowa Department of Natural Resources - Geological Survey

Contact_Person: Casey Kohrt

Contact_Address:

Address_Type: Mailing and Physical

Address: 109 Trowbridge Hall

City: Iowa City

State_or_Province: IA

Postal_Code: 52242-1319

Contact_Voice_Telephone: 319-335-1353

Contact_Electronic_Mail_Address: gis_library@igsb.uiowa.edu

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Access_Constraints: None

Metadata_Use_Constraints: None

Metadata_Extensions:

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

Profile_Name: ESRI Metadata Profile