1978 Rasterized Coastal Louisiana Habitat Data

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:

U.S. Geological Survey, National Wetlands Research Center (NWRC), Coastal Restoration Field Station

Publication_Date: 1988

Title: 1978 Rasterized Coastal Louisiana Habitat Data

Geospatial_Data_Presentation_Form: digital raster data

Online_Linkage: <http://sabdata.nwrc.gov>

Description:

Abstract:

This data set consists of the 1978 National Wetlands Inventory (NWI) Habitat vector data that has been converted to a rasterized version. The original vector data were developed by photointerpreting 1978 false color infrared aerial photography (scale 1:20000), digitizing the maps and incorporating the digital data into the Louisiana Dept. of Natural Resources (DNR) Map Overlay and Statistical System (MOSS), a geographic information systems (GIS). The vector data (250 7.5' quadrangles) were then converted to raster to allow for all the quadrangles to be merged into one data set. The original attributes were aggregated into 15 Level One landcover categories that were developed by the Louisiana DNR's Coastal Management Division; this new aggregation of the Classification of Wetlands and Deep-Water Habitats of the United States (Cowardian, et al. 1979) simplifies the data for interpretation.

Purpose:

To provide a general landcover classification for interpretation on projects not requiring an intense level of detail. A DIRECT OVERLAY GIS ANALYSIS OF THE DATA WITH ANOTHER DATA SET OF THE SAME AREA SHOULD NOT BE PERFORMED - see use constraints below.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1978

Currentness_Reference: Publication Date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -90.00

East_Bounding_Coordinate: -89.00

North_Bounding_Coordinate: 29.500

South_Bounding_Coordinate: 28.875

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: habitat

Theme_Keyword: landcover

Theme_Keyword: Level One

Theme_Keyword: raster

Theme_Keyword: aggregated categories

Theme_Keyword: GIS

Theme_Keyword: Cowardian Wetland Classification

Theme_Keyword: wetland

Theme_Keyword: marsh

Theme_Keyword: water

Theme_Keyword: forest

Theme_Keyword: swamp

Theme_Keyword: shrub/scrub

Theme_Keyword: agriculture/pasture

Theme_Keyword: developed

Theme_Keyword: aquatic vegetation

Theme_Keyword: inert

Theme_Keyword: beach

Theme_Keyword: MOSS

Theme_Keyword: NWI

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: Louisiana

Place_Keyword: Coastal Louisiana

Place_Keyword: LA

Temporal:

Temporal_Keyword_Thesaurus: None

Temporal_Keyword: 1978

Access_Constraints:

Any downloading and use of these data signifies a user's agreement to comprehension and compliance of the NWRC Standard Disclaimer. Insure all portions of metadata are read and clearly understood before using these data in order to protect both user and NWRC interests. See section 6.3 Distribution Liability.

Use_Constraints:

Due to the processes used to create the original vector data set, do not overlay the data with another data set for the same area from a different time period. Obliqueness of the photography and its non correction will produce skew results. A GIS comparison cannot be used with confidence due to the mis-registration problems. Acknowledgement of the National Wetlands Research Center as a data source would be appreciated in products developed from these data, and such acknowledgement as is standard for citation and legal practices for data source is expected by users of this data. Sharing new data layers developed directly from these data would also be appreciated by NWRC staff. Users should be aware of that comparisons with other data sets for the same area from other time periods may be inaccurate due to inconsistencies resulting from changes in photo interpretation, mapping conventions, and digital processes over time. These data are not legal documents and are not to be used as such.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

U.S. Geological Survey, National Wetlands Research Center, Coastal Restoration Field Station

Contact_Person: John Barras

Contact_Position: Geographer

Contact_Address:

Address_Type: physical

Address:

Livestock Show Office, Parker Coliseum, Louisiana State University

City: Baton Rouge

State_or_Province: LA

Postal_Code: 70898

Country: USA

Contact_Voice_Telephone: 225 578-7486

Contact_Facsimile_Telephone: 225 578-7927

Contact_Electronic_Mail_Address: john_barras@usgs.gov

Data_Set_Credit:

The USGS National Wetlands Research Center would like to acknowledge the Louisiana Dept of Natural Resources for the use of the 1978 habitat data.

Native_Data_Set_Environment: MOSS

Cross_Reference:

Citation_Information:

Originator: U.S. Fish and Wildlife Service National Wetlands Inventory

Publication_Date: 1980

Title:

1978 National Wetlands Inventory Habitat Data for Coastal Louisiana

Geospatial_Data_Presentation_Form: digital vector data

Publication_Information:

Publisher: Coastal Environments, Inc (CEI)

Publication_Place: Baton Rouge, LA

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The accuracy of the attributes is based upon the accuracy of the original vector data. Due to the manual aggregation of the Cowardian classification codes, there may be some misinterpretations of the code into the Level One categories; the amount of misinterpretation is unknown.

Logical_Consistency_Report: Unknown

Completeness_Report: These data are complete as possible.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The accuracy of the horizontal positions are based on the accuracy of the original data source.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: U.S. Fish and Wildlife Service, National Wetlands Inventory

Publication_Date: 1980

Title:

1978 National Wetlands Inventory Habitat Data for Coastal Louisiana

Geospatial_Data_Presentation_Form: digital vector data

Publication_Information:

Publication_Place: Baton Rouge, LA

Publisher: Coastal Environments, Inc

Source_Scale_Denominator: 24000

Type_of_Source_Media: digital database file

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1978

Source_Currentness_Reference: Publication date of source material

Source_Citation_Abbreviation: NWI

Source_Contribution: Primary data source for raster data

Process_Step:

Process_Description:

Aggregation of Cowardian Classification - The Cowardian coding scheme was aggregated into 15 categories to create a Level One landcover classification system.

Process_Date: 1988

Process_Step:

Process_Description:

Vector to Raster Conversion - After the data were digitized and placed into the DNR's MOSS, the data were converted to raster for better habitat comparisons between the dates. The data were converted from the MOSS vector format to the MOSS cell format; the reformatting allows for the conversion from MOSS to ERDAS. The MOSS cell data, which were rasterized at a 25 meter cell size, were then converted into ERDAS cell format for comparisons.

Process_Date: 1988

Process_Step:

Process_Description:

Mosaicking raster data - For the DNR Level One habitat coding, a standard color table was applied to each quadrangle. The maps were then mosaicked to form the larger coastal zone habitat map.

Process_Date: 1988

Spatial_Data_Organization_Information:

Indirect_Spatial_Reference: Coastal Louisiana

Direct_Spatial_Reference_Method: Raster

Raster_Object_Information:

Raster_Object_Type: grid cell

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:

Longitude_of_Central_Meridian: -93

Latitude_of_Projection_Origin: 0

False_Easting: 500000

False_Northing: 0

Scale_Factor_at_Central_Meridian: .9996

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: unknown

Ordinate_Resolution: unknown

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137

Denominator_of_Flattening_Ratio: 298.257

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: Attributes of cz1978hab_utm.img

Entity_Type_Definition: Attribute information

Entity_Type_Definition_Source: NWRC

Attribute:

Attribute_Label: ObjectID

Attribute_Definition: Identification number

Attribute_Definition_Source: NWRC

Attribute_Domain_Values:

Unrepresentable_Domain:

Values are numerical (0-15), but do not have an associated unit of measurement

Attribute:

Attribute_Label: Value

Attribute_Definition: Assigned number, similar to the attribute ObjectID

Attribute_Definition_Source: NWRC

Attribute_Domain_Values:

Unrepresentable_Domain:

Values are numerical (0-15), but do not have an associated unit of measurement

Attribute:

Attribute_Label: Red

Attribute_Definition:

The quantity of "red" for the assigned color coding scheme for the associated class_name attribute

Attribute_Definition_Source: NWRC

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 1

Attribute_Units_of_Measure: percent

Attribute:

Attribute_Label: Green

Attribute_Definition:

The quantity of "green" for the assigned color coding scheme for the associated class_name attribute

Attribute_Definition_Source: NWRC

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 1

Attribute_Units_of_Measure: percent

Attribute:

Attribute_Label: Blue

Attribute_Definition:

The quantity of "blue" for the assigned color coding scheme for the associated class_name attribute

Attribute_Definition_Source: NWRC

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 1

Attribute_Units_of_Measure: percent

Attribute:

Attribute_Label: Count

Attribute_Definition: The number of grid cell for the associated class_name attribute

Attribute_Definition_Source: NWRC

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 47252

Range_Domain_Maximum: 93465005

Attribute_Units_of_Measure: No associated unit of measure

Attribute:

Attribute_Label: Class_names

Attribute_Definition:

The habitat codes for the DNR CMD's Level One classification system

Attribute_Definition_Source: LA DNR CMD

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 01 Water (natural)

Enumerated_Domain_Value_Definition:

consists of all naturally occurring water bodies such as streams, rivers, ponds, lakes, bays, and marine waters occurring within the coverage of the habitat maps. Salinity modifiers were not kept for this class.

Enumerated_Domain_Value_Definition_Source: LA DNR CMD

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 02 Water (artifical)

Enumerated_Domain_Value_Definition:

consists of all dredged/excavated water bodies such as impoundments, ponds, canals, pipelines, and brine discharge pits. This class includes failed agricultural impoundments, oilfield impoundments, navigation/oilfield access canals, and oil/natural gas pipeline canals.

Enumerated_Domain_Value_Definition_Source: LA DNR CMD

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 03 Fresh Marsh

Enumerated_Domain_Value_Definition:

consists of all marsh types identified as fresh marsh. This includes partially drained/ditched fresh marsh as well as fresh marsh that is leveed for the purpose of water level management.

Enumerated_Domain_Value_Definition_Source: LA DNR CMD

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 04 Intermediate Marsh

Enumerated_Domain_Value_Definition:

consists of all marsh types identified as intermediate (oligohaline) marsh. This includes partially drained/ditched intermediate marsh, leveed intermediate marsh, and intermediate marsh that is leveed for the purpose of water level management.

Enumerated_Domain_Value_Definition_Source: LA DNR CMD

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 05 Brackish Marsh

Enumerated_Domain_Value_Definition:

consists of all marsh types identified as brackish (mesohaline) marsh. This includes partially drained/ditched brackish marsh, leveed brackish marsh, and brackish marsh that is leveed for the purpose of water level management.

Enumerated_Domain_Value_Definition_Source: LA DNR CMD

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 06 Saline Marsh

Enumerated_Domain_Value_Definition:

consists of all marsh types identified as saline (mesohaline) marsh. This includes partially drained/ditched saline marsh, leveed saline marsh, and saline marsh that is leveed for the purpose of water level management.

Enumerated_Domain_Value_Definition_Source: LA DNR CMD

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 07 Forest (upland/bottomland hardwoods)

Enumerated_Domain_Value_Definition:

consists of broad-leaved deciduous, broad-leaved evergreen, and needle-leaved evergreen vegetation greater than twenty feet in height which occur on elevated/drained areas within the coverage of the habitat maps. In most cases this land cover type occurs along natural levee systems, and older spoil bank systems. In general, most of the forested areas occurring within the coastal zone would be typified as bottomland hardwoods although a large percentage of the forest class occurring in the southern Florida parishes is representative of needle-leaved evergreen forest (pine). An example of the forest class that would be representative of bottomland hardwoods is a fringing forest parallel to a natural distributary.

Enumerated_Domain_Value_Definition_Source: LA DNR CMD

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 08 Swamp

Enumerated_Domain_Value_Definition:

consists of palustrine forested broad-leaved and needle-leaved deciduous vegetation (primarily cypress and tupelo gum)

Enumerated_Domain_Value_Definition_Source: LA DNR CMD

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 09 Shrub/scrub

Enumerated_Domain_Value_Definition:

consists of broad-leaved deciduous, needle-leaved deciduous, broad-leaved evergreen, and needle-leaved evergreen vegetation that are less than twenty feet in height occurring within the coverage of the habitat maps.

Enumerated_Domain_Value_Definition_Source: LA DNR CMD

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 10 Shrub/scrub (Spoil)

Enumerated_Domain_Value_Definition:

consists of all broad-leaved deciduous, needle-leaved deciduous, broad-leaved evergreen, and needle-leaved evergreen vegetation that are less than twenty feet in height and occur on spoil deposits. The forested spoil types were not broken out as spoil vegetation because they were not recognized as such at the inception of this coding system.

Enumerated_Domain_Value_Definition_Source: LA DNR CMD

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 11 Agriculture/Pasture

Enumerated_Domain_Value_Definition:

consists of nonwetland areas being cultivated for crops, maintained as pasture, or left as grasslands and also includes any wetlands that have been drained and are now being used as agricultural and/or pasture. This category also includes vegetated dunes.

Enumerated_Domain_Value_Definition_Source: LA DNR CMD

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 12 Developed

Enumerated_Domain_Value_Definition:

consists of regularly maintained right-of-ways and urban/residential/commerical/industrial/oil/gas/mineral developments on upland sites or in areas protected from flooding by levees and/or drainage canals for the area covered by the habitat data.

Enumerated_Domain_Value_Definition_Source: LA DNR CMD

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 13 Aquatic vegetation (floating/submerged/undefined)

Enumerated_Domain_Value_Definition:

consists of floating and submerged vegetation found in all types of natural and artifical water bodies and in all salinity regimes within the coverage of the habitat maps. This includes water hyacinth, duckweed, and undefined submerged vascular vegetation.

Enumerated_Domain_Value_Definition_Source: LA DNR CMD

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 14 Inert

Enumerated_Domain_Value_Definition:

consists of any unvegetated land areas existing within the habitat coverage but not designated as a developed or beach class. This includes unvegetated spoil banks, tidal flats, exposed reefs, rocks jetties, drained ponds, and mud banks exposed along bayous/tidal streams.

Enumerated_Domain_Value_Definition_Source: LA DNR CMD

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 15 Beach

Enumerated_Domain_Value_Definition:

consists of wave reworked sand and/or shell material along a land-water interface

Enumerated_Domain_Value_Definition_Source: LA DNR CMD

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 00 Out of Coastal Zone

Enumerated_Domain_Value_Definition: Areas out of the coastal zone

Enumerated_Domain_Value_Definition_Source: LA DNR CMD

Attribute:

Attribute_Label: Opacity

Attribute_Definition: The state of color within the color coding scheme

Attribute_Definition_Source: NWRC

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 0

Enumerated_Domain_Value_Definition: The absence of color

Enumerated_Domain_Value_Definition_Source: NWRC

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 1

Enumerated_Domain_Value_Definition: The presence of color

Enumerated_Domain_Value_Definition_Source: NWRC

Attribute:

Attribute_Label: Acres

Attribute_Definition: The number of acres represented by the associated class_name

Attribute_Definition_Source: NWRC

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 7297.646132

Range_Domain_Maximum: 14434828.837205

Attribute_Units_of_Measure: acres

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

U.S. Geological Survey, National Wetlands Research Center, Coastal Restoration Field Station

Contact_Person: John Barras

Contact_Position: Geographer

Contact_Address:

Address_Type: Physical

Address:

Livestock Show Office, Parker Coliseum, Louisiana State University

City: Baton Rouge

State_or_Province: LA

Postal_Code: 70898

Country: USA

Contact_Voice_Telephone: 225 578-7486

Contact_Facsimile_Telephone: 225 578-7927

Contact_Electronic_Mail_Address: john_barras@usgs.gov

Distribution_Liability:

Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the accuracy or utility of the data or any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that these data are directly acquired from a U.S. Geological Survey server, and not indirectly through other sources which may have changed the data in some way. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein. So, these data are provided "as is" and without any express or implied warranties, including without limitations, the implied warranties of merchantability and fitness for a particular purpose. Also, use of trade names or commercial products in this metadata is solely for the purpose of providing specific information, and does not imply recommendation or endorsement by the U.S. Government.

Metadata_Reference_Information:

Metadata_Date: 200406

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey, National Wetlands Research Center

Contact_Position: Metadata specialist

Contact_Address:

Address_Type: physical and mailing

Address: 700 Cajundome Blvd

City: Lafayette

State_or_Province: LA

Postal_Code: 70506

Country: USA

Contact_Voice_Telephone: 337 266-8500

Contact_Facsimile_Telephone: 337 266-8513

Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Access_Constraints: None

Metadata_Use_Constraints:

Acknowledgement of the National Wetlands Research Center as the metadata source would be appreciated. Please cite the original metadata when using portions to created another record for slightly altered data, such as reprojection.