Name: GRSM Level IV Ecoregions

Display Field: US_L4NAME

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. They are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem components. These general purpose regions are critical for structuring and implementing ecosystem management strategies across federal agencies, state agencies, and nongovernment organizations that are responsible for different types of resources within the same geographical areas. The approach used to compile this map is based on the premise that ecological regions can be identified through the analysis of patterns of biotic and abiotic phenomena, including geology, physiography, vegetation, climate, soils, land use, wildlife, and hydrology. The relative importance of each characteristic varies from one ecological region to another. A Roman numeral hierarchical scheme has been adopted for different levels for ecological regions. Level I is the coarsest level, dividing North America into 15 ecological regions. Level II divides the continent into 50 regions (Commission for Environmental Cooperation Working Group, 1997). At Level III, the continental United States contains 104 regions whereas the conterminous United States has 85 (U.S. Environmental Protection Agency, 2005). Level IV ecoregions are further subdivisions of Level III ecoregions. Methods used to define the ecoregions are explained in Omernik (1995, 2004), Omernik and others (2000), and Gallant and others (1989).

Copyright Text: U.S. Environmental Protection Agency

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 1000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: -84.392092581878
YMin: 35.1192886064686
XMax: -82.632366662429
YMax: 36.1400001841436
Spatial Reference: 4269 (4269)

Drawing Info:

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HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID

Unique ID Field:

Name : OBJECTID

IsSystemMaintained : True

Global ID Field: GlobalID

Type ID Field: US_L4NAME

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Types:

ID: Southern Limestone/Dolomite Valleys and Low Rolling Hills
Name: Southern Limestone/Dolomite Valleys and Low Rolling Hills
Domains:

• Field Name: VError
  Inherited
  
• Field Name: MapMethod
  Inherited
  
• Field Name: QuadName
  Inherited
  
• Field Name: UnitCode
  Inherited
  
• Field Name: IsSensitive
  Inherited
  
• Field Name: IsExtant
  Inherited
  
• Field Name: HError
  Inherited
  
• Field Name: County
  Inherited
  
• Field Name: State
  Inherited
  
• Field Name: Watershed
  Inherited
  
Templates:

Name: Southern Limestone/Dolomite Valleys and Low Rolling Hills
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SHAPE_STLength__: 0
• US_L4NAME: Southern Limestone/Dolomite Valleys and Low Rolling Hills
• SHAPE_STArea__: 0

---

ID: High Mountains
Name: High Mountains
Domains:

• Field Name: VError
  Inherited
  
• Field Name: MapMethod
  Inherited
  
• Field Name: QuadName
  Inherited
  
• Field Name: UnitCode
  Inherited
  
• Field Name: IsSensitive
  Inherited
  
• Field Name: IsExtant
  Inherited
  
• Field Name: HError
  Inherited
  
• Field Name: County
  Inherited
  
• Field Name: State
  Inherited
  
• Field Name: Watershed
  Inherited
  
Templates:

Name: High Mountains
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SHAPE_STLength__: 0
• US_L4NAME: High Mountains
• SHAPE_STArea__: 0

---

ID: Southern Metasedimentary Mountains
Name: Southern Metasedimentary Mountains
Domains:

• Field Name: VError
  Inherited
  
• Field Name: MapMethod
  Inherited
  
• Field Name: QuadName
  Inherited
  
• Field Name: UnitCode
  Inherited
  
• Field Name: IsSensitive
  Inherited
  
• Field Name: IsExtant
  Inherited
  
• Field Name: HError
  Inherited
  
• Field Name: County
  Inherited
  
• Field Name: State
  Inherited
  
• Field Name: Watershed
  Inherited
  
Templates:

Name: Southern Metasedimentary Mountains
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SHAPE_STLength__: 0
• US_L4NAME: Southern Metasedimentary Mountains
• SHAPE_STArea__: 0

---

ID: Southern Sandstone Ridges
Name: Southern Sandstone Ridges
Domains:

• Field Name: VError
  Inherited
  
• Field Name: MapMethod
  Inherited
  
• Field Name: QuadName
  Inherited
  
• Field Name: UnitCode
  Inherited
  
• Field Name: IsSensitive
  Inherited
  
• Field Name: IsExtant
  Inherited
  
• Field Name: HError
  Inherited
  
• Field Name: County
  Inherited
  
• Field Name: State
  Inherited
  
• Field Name: Watershed
  Inherited
  
Templates:

Name: Southern Sandstone Ridges
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SHAPE_STLength__: 0
• US_L4NAME: Southern Sandstone Ridges
• SHAPE_STArea__: 0

---

ID: Southern Crystalline Ridges and Mountains
Name: Southern Crystalline Ridges and Mountains
Domains:

• Field Name: VError
  Inherited
  
• Field Name: MapMethod
  Inherited
  
• Field Name: QuadName
  Inherited
  
• Field Name: UnitCode
  Inherited
  
• Field Name: IsSensitive
  Inherited
  
• Field Name: IsExtant
  Inherited
  
• Field Name: HError
  Inherited
  
• Field Name: County
  Inherited
  
• Field Name: State
  Inherited
  
• Field Name: Watershed
  Inherited
  
Templates:

Name: Southern Crystalline Ridges and Mountains
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SHAPE_STLength__: 0
• US_L4NAME: Southern Crystalline Ridges and Mountains
• SHAPE_STArea__: 0

---

ID: Southern Sedimentary Ridges
Name: Southern Sedimentary Ridges
Domains:

• Field Name: VError
  Inherited
  
• Field Name: MapMethod
  Inherited
  
• Field Name: QuadName
  Inherited
  
• Field Name: UnitCode
  Inherited
  
• Field Name: IsSensitive
  Inherited
  
• Field Name: IsExtant
  Inherited
  
• Field Name: HError
  Inherited
  
• Field Name: County
  Inherited
  
• Field Name: State
  Inherited
  
• Field Name: Watershed
  Inherited
  
Templates:

Name: Southern Sedimentary Ridges
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SHAPE_STLength__: 0
• US_L4NAME: Southern Sedimentary Ridges
• SHAPE_STArea__: 0

---

ID: Southern Dissected Ridges and Knobs
Name: Southern Dissected Ridges and Knobs
Domains:

• Field Name: VError
  Inherited
  
• Field Name: MapMethod
  Inherited
  
• Field Name: QuadName
  Inherited
  
• Field Name: UnitCode
  Inherited
  
• Field Name: IsSensitive
  Inherited
  
• Field Name: IsExtant
  Inherited
  
• Field Name: HError
  Inherited
  
• Field Name: County
  Inherited
  
• Field Name: State
  Inherited
  
• Field Name: Watershed
  Inherited
  
Templates:

Name: Southern Dissected Ridges and Knobs
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SHAPE_STLength__: 0
• US_L4NAME: Southern Dissected Ridges and Knobs
• SHAPE_STArea__: 0

---

ID: Limestone Valleys and Coves
Name: Limestone Valleys and Coves
Domains:

• Field Name: VError
  Inherited
  
• Field Name: MapMethod
  Inherited
  
• Field Name: QuadName
  Inherited
  
• Field Name: UnitCode
  Inherited
  
• Field Name: IsSensitive
  Inherited
  
• Field Name: IsExtant
  Inherited
  
• Field Name: HError
  Inherited
  
• Field Name: County
  Inherited
  
• Field Name: State
  Inherited
  
• Field Name: Watershed
  Inherited
  
Templates:

Name: Limestone Valleys and Coves
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SHAPE_STLength__: 0
• US_L4NAME: Limestone Valleys and Coves
• SHAPE_STArea__: 0

---

ID: Broad Basins
Name: Broad Basins
Domains:

• Field Name: VError
  Inherited
  
• Field Name: MapMethod
  Inherited
  
• Field Name: QuadName
  Inherited
  
• Field Name: UnitCode
  Inherited
  
• Field Name: IsSensitive
  Inherited
  
• Field Name: IsExtant
  Inherited
  
• Field Name: HError
  Inherited
  
• Field Name: County
  Inherited
  
• Field Name: State
  Inherited
  
• Field Name: Watershed
  Inherited
  
Templates:

Name: Broad Basins
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SHAPE_STLength__: 0
• US_L4NAME: Broad Basins
• SHAPE_STArea__: 0

---

ID: Southern Shale Valleys
Name: Southern Shale Valleys
Domains:

• Field Name: VError
  Inherited
  
• Field Name: MapMethod
  Inherited
  
• Field Name: QuadName
  Inherited
  
• Field Name: UnitCode
  Inherited
  
• Field Name: IsSensitive
  Inherited
  
• Field Name: IsExtant
  Inherited
  
• Field Name: HError
  Inherited
  
• Field Name: County
  Inherited
  
• Field Name: State
  Inherited
  
• Field Name: Watershed
  Inherited
  
Templates:

Name: Southern Shale Valleys
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

• SHAPE_STLength__: 0
• US_L4NAME: Southern Shale Valleys
• SHAPE_STArea__: 0

---

Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 6/28/2015 12:21:41 PM

Schema Last Edit Date: 6/28/2015 12:21:41 PM

Data Last Edit Date: 6/28/2015 12:21:41 PM

Supported Operations:   Query   Query Top Features   Query Analytic   Query Bins   Generate Renderer   Validate SQL   Get Estimates   ConvertFormat