FGDC Metadata for PA_ECO Identification_Information: Citation: Originator: Woods, A.J., J. O. Omernik, D. D. Brown, C. W. Kiilsgaard Publication_Date: 1996 Publication_Time: Title: Level IV Ecoregions of Pennsylvania Edition: Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: Issue_Identification: Publication_Information: Publication_Place: Publisher: Other_Citation_Details: Online_Linkage: Larger_Work_Citation: Scale_Denominator: 250000 Description: Abstract: Ecoregions denote areas within which there is general similarity in ecosystems and in the type, quality, and quantity of environmental resources. This map depicts revisions and subdivisions of ecoregions, originally compiled at a relatively small scale (Omernik, 1987). Compilation of this map, performed at the larger 1:250,000-scale, was part of a collaborative project with the United Division, the EPA National Health and Environmental Effects Research Laboratory Pennsylvania, Virginia, Maryland, and West Virginia. The ecoregions and subregions are designed to serve as a spatial framework for environmental resource management: the most immediate needs are for setting management goals water quality standards. The approach used to compile this map is based on the premise that ecological regions can be identified through the analysis of the patterns and the composition of biotic and abiotic phenomena that affect or reflect differences in ecosystem quality and integrity (Wiken 1986; Omernik 1987, 1995). These phenomena include geology, physiography, vegetation, climate, soils, land use, Because of possible confusion with other meanings of terms for different levels for this effort. Level I is the coarsest level, dividing North America into nine ecological regions, whereas at Level II the continent is subdivided into 32 Omernik (1987, 1995), Gallant et al., (1989), and Griffith et al., (1994). Comments, questions, and suggestions regarding this map should be directed to James M. Omernik, U.S. EPANational Health and Environmental Effects Laboratory (NHEERL), 200 SW 35th Street, Corvallis, OR 97333 (phone: 541-754-4458) or Alan Woods, Dynamac, 200 SW 35th Street, Corvallis, OR 97333 (phone: 541-754-4469). Purpose: Assist managers of aquatic and terrestrial resources in understanding the regional patterns of the realistically attainable quality of these rewources. Supplemental_Information: Procedures_Used: 1) All ecoregion and subregion delineations are digitized from the U.S.G.S. 1:250,000 base maps. Prior to digitizing each base map must be initialized to orient the map and relate it in geographic coordinates to the surface of the earth. When the registration tics are entered at the start of digitizing a transformation error of <0.003 must be achieved in order to insure a high level of registration accuracy. The person responsible for digital data entry completes a data sheet describing coverage name, date of entry, and whether a topology for the coverage is established. 2) After each 1:250,000 base map has been digitized, a topology for each coverage is established. This function creates unique identities 3) Next each base map is tested for polygon errors through an internal editing function. Errors are corrected for unlabeled polygons, unclosed polygons, or polygons with more than one label. Topology is reestablished for each coverage and tested again until no error are indicated. 4) The digital coverage is then plotted at the same scale as the original base map. This coverage is overlaid on a light table with the original and visually inspected for replication of original lines with digitized lines. Two individuals independently inspect the coverage for accuracy. Digitizing board: CalComp 9100 Digitizer: Sandi Azevedo/Francie Faure/Suzanne Pierson Coverage Type: Poly and Line Revisions: 1. Original lines digitized 1/92 2. Revised lines 4/92 3. Revised lines 7/92 4. Lines were updated 2/94 5. Lines revised 6/94 6. Final lines were updated 9/95 Reviews_Applied_to_Data: (See Procedures_Used, numbers 3 and 4) Related_Spatial_and_Tabular_Data_Sets: None Other_References_Cited: Gallant, A.L., T.R. Whittier, D.P. Larsen, J.M. Omernik, and R.M. Hughes. 1989. Regionalization as a tool for managing environmental resources. EPA/600/3-89/060. U.S. Environmental Protection Agency, Environmental Research Laboratory, Corvallis,OR. 152p. Gallant, A.L., E.F. Binnian, J.M. Omernik, and M.B. Shasby. 1996. Ecoregions of Alaska, Report prepared jointly by the U.S. Geological Survey, the U.S. Environmental Protection Agency, and Colorado State University. Omernik, J.M. 1987. Ecoregions of the conterminous United States. Map Supplement (scale 1:7,500,000) (map now updated, see U.S. Environmental Protection Agency, 1995). Annals of the Association of American Geographers 77(1):118-125. Omernik, J.M. 1995. Ecoregions: A spatial framework for environmental management. In: Biological Assessment and Criteria: Tools for Water Resource Planning and Decision Making. W.S. Davis and T.P. Simon (eds.). Lewis Publishers, Boca Raton, FL. pp. 49-62. U.S. Environmental Protection Agency. 1995. Level III Ecoregions of the Continental United States, Map M-1 (revision of Omernik, 1987). NHEERL, Corvallis, Oregon. Wiken, E. 1986. Terrestrial ecozones of Canada. Environment Canada. Ecological Land Classification Series No. 19. Ottawa, Canada. Notes: Time_Period_of_Content: Range_of_Dates/Times: Beginning_Date: 1990 Ending_Date: 1/96 Currentness_Reference: Status: Progress: 1996 Maintenance_and_Update_Frequency: as needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -80.99915731 East_Bounding_Coordinate: -74.21389328 North_Bounding_Coordinate: 42.70395698 South_Bounding_Coordinate: 38.91828883 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: Level IV ecoregions Place: Place_Keyword_Thesaurus: none Place_Keyword: Ecoregions of Continental US Stratum: Stratum_Keyword_Thesaurus: none Stratum_Keyword: Temporal: Temporal_Keyword_Thesaurus: none Temporal_Keyword: Access_Constraints: n/a Use_Constraints: for use at 1:250,000 or smaller scales Point_of_Contact: Data_Set_Credit: Security_Information: Security_Classification_System: None Security_Classification: UNCLASSIFIED Security_Handling_Description: None Native_Data_Set_Environment: SunOS UNIX, ARC/INFO version 7.0.4 Cross_Reference: Originator: Omernik, J.M. Publication_Date: 1987 Publication_Time: Title: Ecoregions of the conterminous United States (map supplement) Edition: 1 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: Issue_Identification: Publication_Information: Publication_Place: Publisher: Annals of Assoc. of Am. Geogs. Other_Citation_Details: Online_Linkage: Larger_Work_Citation: Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: See Entity_Attribute_Information Quantitative_Attribute_Accuracy_Assessment: Attribute_Accuracy_Value: See Explanation Attribute_Accuracy_Explanation: Attribute accuracy is described, where present, with each attribute defined in the Entity and Attribute Section. Logical_Consistency_Report: Polygon and chain-node topology present. Completeness_Report: Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Lineage: See also Supplemental_Information: Process_Step: Process_Description: SANDI COPY REG3CL ../REG3CL Source_Used_Citation_Abbreviation:None Process_Date: 19950914 Process_Time: 1453 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: SANDI COPY REG3CL REG3CL2 Source_Used_Citation_Abbreviation:None Process_Date: 19950926 Process_Time: 813 Source_Produced_Citation_Abbreviation: None Process_Step: Source_Used_Citation_Abbreviation:None Process_Date: 19950926 Process_Time: 851 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: SANDI CLEAN REG3CL2 REG3_ECO Source_Used_Citation_Abbreviation:None Process_Date: 19950926 Process_Time: 853 Source_Produced_Citation_Abbreviation: None Process_Step: Source_Used_Citation_Abbreviation:None Process_Date: 19950926 Process_Time: 855 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: SANDI CLEAN REG3_ECO Source_Used_Citation_Abbreviation:None Process_Date: 19950926 Process_Time: 855 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: SANDI LABELERRORS REG3_ECO Source_Used_Citation_Abbreviation:None Process_Date: 19950926 Process_Time: 856 Source_Produced_Citation_Abbreviation: None Process_Step: Source_Used_Citation_Abbreviation:None Process_Date: 19950926 Process_Time: 904 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: SANDI CLEAN REG3_ECO Source_Used_Citation_Abbreviation:None Process_Date: 19950926 Process_Time: 905 Source_Produced_Citation_Abbreviation: None Process_Step: Source_Used_Citation_Abbreviation:None Process_Date: 19950926 Process_Time: 1612 Source_Produced_Citation_Abbreviation: None Process_Step: Source_Used_Citation_Abbreviation:None Process_Date: 19950927 Process_Time: 829 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: SANDI CLEAN REG3_ECO REG3_ECO2 Source_Used_Citation_Abbreviation:None Process_Date: 19950927 Process_Time: 831 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: SANDI RENAME REG3_ECO2 REG3_ECO Source_Used_Citation_Abbreviation:None Process_Date: 19950927 Process_Time: 834 Source_Produced_Citation_Abbreviation: None Process_Step: Source_Used_Citation_Abbreviation:None Process_Date: 19950927 Process_Time: 840 Source_Produced_Citation_Abbreviation: None Process_Step: Source_Used_Citation_Abbreviation:None Process_Date: 19950927 Process_Time: 941 Source_Produced_Citation_Abbreviation: None Process_Step: Source_Used_Citation_Abbreviation:None Process_Date: 19950927 Process_Time: 941 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: SANDI RENAME REG3_ECO REG3_ECOX Source_Used_Citation_Abbreviation:None Process_Date: 19950927 Process_Time: 1001 Source_Produced_Citation_Abbreviation: None Process_Step: Source_Used_Citation_Abbreviation:None Process_Date: 19950927 Process_Time: 1338 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: SANDI CLEAN REG3_ECOX REG3_ECO Source_Used_Citation_Abbreviation:None Process_Date: 19950927 Process_Time: 1340 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: EXTERNALALL Source_Used_Citation_Abbreviation:None Process_Date: 19951012 Process_Time: 1434 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: SANDI EXPORT COVER REG3_ECO REG3_ECO Source_Used_Citation_Abbreviation:None Process_Date: 19951120 Process_Time: 831 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: SANDI CLIP REG3_ECO /HOME/SANDI/JORY4/ZBOUNDARY/PA_STATE PA_ECO Source_Used_Citation_Abbreviation:None Process_Date: 19960215 Process_Time: 1710 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: SANDI BUILD PA_ECO LINE Source_Used_Citation_Abbreviation:None Process_Date: 19960221 Process_Time: 1631 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: SANDI ARCEDIT /DSK/JORY3/DATA/ECOREGION/REG3/CHESAPEAKE/PA_ECO Source_Used_Citation_Abbreviation:None Process_Date: 19960221 Process_Time: 1653 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: SANDI DOCUMENT PA_ECO COPY /HOME/SANDI/JORY3/ECOREGION/US/USECO SANDI Source_Used_Citation_Abbreviation:None Process_Date: 19960624 Process_Time: 830 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: SANDI DOCUMENT PA_ECO UPDATE SANDI Source_Used_Citation_Abbreviation:None Process_Date: 19960624 Process_Time: 907 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: SANDI EXPORT COVER PA_ECO PA_ECO NONE Source_Used_Citation_Abbreviation:None Process_Date: 19960624 Process_Time: 927 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: SANDI EXPORT COVER PA_ECO PA_ECO NONE Source_Used_Citation_Abbreviation:None Process_Date: 19960624 Process_Time: 928 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: SANDI DOCUMENT PA_ECO UPDATE SANDI Source_Used_Citation_Abbreviation:None Process_Date: 19960909 Process_Time: 1402 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: SANDI EXPORT COVER PA_ECO PA_ECO Source_Used_Citation_Abbreviation:None Process_Date: 19970220 Process_Time: 818 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: SANDI EXPORT COVER PA_ECO PA_ECO NONE Source_Used_Citation_Abbreviation:None Process_Date: 19970402 Process_Time: 1309 Source_Produced_Citation_Abbreviation: None Cloud_Cover: Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 120 SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 474 SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Point_and_Vector_Object_Count: 121 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar Map_Projection: Map_Projection_Name: ALBERS Longitude_of_Central_Meridian: -96 Latitude_of_Projection_Origin: 23 Latitude_of_First_Standard_Parallel: 29.5 Latitude_of_Second_Standard_Parallel: 45.5 False_Easting: 0.00000 False_Northing: 0.00000 Geodetic Model Horizontal_Datum_Name: Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6,378,206.4 Denominator_of_Flattening: 294.98 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: PA_ECO.PAT Entity_Type_Definition: Ecoregions of PA polygon attribute table Entity_Type_Definition_Source: 1:250,000 topo maps Attribute: Attribute_Label: - Attribute_Definition: Ecoregions of PA polygon attribute table Attribute_Definition_Source: 1:250,000 topo maps Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: - Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: AREA Attribute_Definition: Area of poly/region in square coverage units Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Positive real numbers Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of poly/region in coverage units Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Positive real numbers Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: PA_ECO# Attribute_Definition: Internal feature number Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: PA_ECO-ID Attribute_Definition: User-assigned feature number Attribute_Definition_Source: User-defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: ECO Attribute_Definition: Level 4 Ecoregion code Attribute_Definition_Source: 1:250,000 quads Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: character Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Overview_Description: Entity_and_Attribute_Overview: Attributes: Polygon coverage (.PAT) Regions: ECO Ecoregion name 58 Northeastern Highlands 58h Reading Prong 60 Northern Appalachian Plateau 60a Glaciated Low Plateau 60b Northeastern Uplands 61 Erie/Ontario Hills and Lake Plain 61a Erie Lake Plain 61b Mosquito Creek-Pymatuning Lowlands 61c Low Lime Till Plain 62 North Central Appalachians 62a Pocono High Plateau 62b Low Poconos 62c Glaciated Allegheney High Plateau 62d Unglaciated Allegheney High Plateau 62e Low Catskills 63 Middle Atlantic Coastal Plain 63a Delaware River Terraces and Uplands 64 Northern Piedmont 64a Triassic Lowlands 64b Diabase and Conglomerate Uplands 64c Piedmont Uplands 64d Piedmont Limestone/Dolomite Lowlands 66 Blue Ridge Mountains 66a Northern Igneous Ridges 66b Northern Sedimentary-Metasedimentary Ridges 66c Interior Plateau 66d Southern Igneous Ridges and Mountains 66e Southern Sedimentary Ridges 67 Ridge and Valley 67a Northern Limestone/Dolomite Valley 67b Northern Shale Valleys 67c Northern Sandstone Ridges 67d Northern Dissected Ridges 67e Anthracite 67f Southern Limestone/Dolomite Valleys and Low Rolling Hills 67g Southern Shale Valleys 67h Southern Sandstone Ridges 67i Southern Dissected Ridges and Knobs 69 Central Appalachians 69a Forested Hills and Mountains 69b Uplands and Valleys of Mixed Land Use 69c Greenbriar Karst 69d Cumberland Mountains 70 Western Allegheny Plateau 70a Permian Hills 70b Monongahela Transition Zone 70c Pittsburgh Low Plateau LNTYPE 111 Level IV Ecoregion line 222 Level III Ecoregion Line Entity_and_Attribute_Detail_Citation: Not Available Distribution_Information: Metadata_Reference_Section: Metadata_Date: 19960909 Metadata_Contact: sandi Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: 19940608 Metadata_Time_Convention: Local Time Metadata_Security_Information: Metadata_Security_Classification_System: None Metadata_Security_Classification: UNCLASSIFIED Metadata_Security_Handling_Description: None
