Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey, National Wetlands Research Center Publication_Date: 200307 Title: 2000 Brown Marsh Habitat Data Geospatial_Data_Presentation_Form: Digital vector data Larger_Work_Citation: Citation_Information: Originator: Barataria-Terrebonne National Estuary Program Scientific-Technical Committee Publication_Date: 20010207 Title: Requests for submission of Scope of Services for Marsh Dieback and Nutria Control Emergency Response. Geospatial_Data_Presentation_Form: document Publication_Information: Publication_Place: Thibodaux, LA Publisher: Barataria-Terrebonne National Estuary Program Scientific-Technical Committee Online_Linkage: http://www.brownmarsh.net/reports/brown_marsh_rfp.pdf Description: Abstract: This data set consists of digital data describing wetland and upland habitats for the Brown Marsh area in 2000. The data set includes 12 7.5' quadrangles. Wetlands were classified according to the Marsh Dieback Syndrome (MaDS) signature classification scheme. The classification was developed to delineate features of healthy and affected marsh and created through the use of field observations and laboratory analysis of the photography. The classification (key) references the defining vegetation and/or features and provides signature information (consistent photographic elements) for photo interpretation (located at http://www.brownmarsh.net). Purpose: The intended use of this data set is to map the extent of the marsh dieback for 2000 and to provide information for comparison to later habitat mapping efforts. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20000927 Ending_Date: 20001115 Currentness_Reference: Ground Condition during source photography acquisition. 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: aquatic Theme_Keyword: forested Theme_Keyword: bayous Theme_Keyword: canals Theme_Keyword: scrub shrub Theme_Keyword: wetlands Theme_Keyword: marshes Theme_Keyword: swamps Theme_Keyword: marshlands Theme_Keyword: habitats Theme_Keyword: uplands Theme_Keyword: impacted Theme_Keyword: non-impacted Theme_Keyword: uplands Theme_Keyword: modifiers Theme_Keyword: disease Theme_Keyword: coastal Theme_Keyword: emergent Theme_Keyword: coastal habitats Theme_Keyword: geographic information system data Theme_Keyword: classified aerial photography Theme_Keyword: maps Theme_Keyword: mapping Theme_Keyword: digitizing Theme_Keyword: open water Theme_Keyword: unconsolidated Theme_Keyword: rocky shore Theme_Keyword: dieback Theme_Keyword: brown marsh Theme_Keyword: wrack Theme_Keyword: mangrove Place: Place_Keyword_Thesaurus: U.S. Geological Survey, Geographic Names Information System Place_Keyword: Louisiana Place_Keyword: Louisiana Coast Place_Keyword: South Louisiana Place_Keyword: Lake Quitman Place_Keyword: Lake Tambour Place_Keyword: Lake Felicity Place_Keyword: Bay Courant Place_Keyword: Oyster Bayou Place_Keyword: East Bay Junop Place_Keyword: Grand Bayou du Large Place_Keyword: Dog Lake Place_Keyword: Cocodrie Place_Keyword: Pelican Pass Place_Keyword: Leeville Place_Keyword: Central Isle Dernieres Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: 2000 Temporal_Keyword: fall Access_Constraints: It is strongly recommended that this data is directly acquired from the distributor described above or from another USGS Biological Resources Division server and not indirectly through other sources which may have changed the data in some way. The distributor makes no claims as to the data's suitability for other purposes. Use_Constraints: Acknowledgement of the U.S. Geological Survey, National Wetlands Research Center as a data source would be appreciated in products developed from these data, and such acknowledgment 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 U.S. Geological Survey, National Wetlands Research Center staff. Users should be aware that comparison with other data sets for the same area from other time periods may be inaccurate due to inconsistencies resulting from changes in mapping conventions, data collection, and computer processes over time. The distributor shall not be liable for improper or incorrect use of this data, based on the description of appropriate/inappropriate uses described in this metadata document. 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 Contact_Person: Larry Handley Contact_Position: Geographer and Principle Investigator Contact_Address: Address_Type: Mailing and Physical Address Address: 700 Cajundome Blvd City: Lafayette State_or_Province: LA Postal_Code: 70506 Country: USA Contact_Voice_Telephone: 337 266-8691 Contact_Facsimile_Telephone: 337 266-8513 Contact_Electronic_Mail_Address: larry_handley@usgs.gov Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, National Wetlands Research Center Contact_Person: Steve Hartley Contact_Position: Senior GIS Analyst/Geographer Contact_Address: Address_Type: Mailing and Physical Address Address: 700 Cajundome Blvd City: Lafayette State_or_Province: LA Postal_Code: 70506 Country: USA Contact_Voice_Telephone: 337 266-8543 Contact_Facsimile_Telephone: 337 266-8616 Contact_Electronic_Mail_Address: steve_hartley@usgs.gov Data_Set_Credit: None Native_Data_Set_Environment: Arc8.3, NT Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The attribute accuracy was tested using several methods during the data development phases and completion. All interpreted photos were checked by two photo interpreters; all transfered based maps were checked by a cartographer and a photo interpreter, who didn't perform the original interpretations. Within in the interpretation phase, there were at least three stages of quality control. To further ensure the accuracy of the classification, ground truthing was conducted for both impacted and non-impacted areas. For areas of questionablity, similar non-impacted sites were visited to assist in supporting the classification. 1998 and 2000 aerial photography were used in the ground truthing activity. For digitizing phase, data are checked at least twice before finalization of maps. Data were tested by manual comparison of the source with hard copy printouts and/or symbolized display of the digital wetlands data on an interactive computer graphic system. A check for adjacent polygons with the same attribute was conducted using an Arcview Avenue script. Overall, the attribute accuracy is believed high due to the multiple error-checking steps done redundantly during processing (for both the photo-interpretation and digitizing phases). Exact tolerances vary with coverages, as does the date of the processing and testing. Logical_Consistency_Report: This logical consistency report includes information about both general and specific topological tests and data generation dynamics in the fidelity of data. Data is inherently polygonal. Polygons intersecting the neatline are closed along the border. Segments making up the outer and inner boundaries of a polygon tie end-to-end to completely enclose the area. Line segments are a set of sequentially numbered coordinate pairs. No duplicate features exist nor duplicate points in a data string. Intersecting lines are separated into individual line segments at the points of intersection. Point data are represented by two sets of coordinate pairs, each with the same coordinate values. All nodes are represented by a single coordinate pair which indicates the beginning or end of a line segment. The neatline for each quad is generated by connecting four corners of a digital file, as established during initialization of the digital file. All data crossing the neatline are clipped to the neatline and data within a specified tolerance of the neatline are snapped to the neatline. During the photointerpretation stage, the large scale maps were edge matched to ensure line connection and attribute labeling. Completeness_Report: All photo-interpretable wetlands are identified and mapped using standard methodologies and equipment for the photo interpretation phases of the data development. All wetlands were identified and mapped regardless of the size. In general, the minimum mapping unit is .5 acres depending of the wetland type and the scale and emulsion of the source aerial photography. Processing of the digital data also follows conventions and standard methodologies for the time period and within limitations of available workstation equipment at the date of data development. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: For reference points accuracy, the accuracy for the digital data are tested by visual comparison of the source with hard copy maps, and by understanding of the hardware tolerances and processing values reported by the software used in data development. Additional checks on comparison were possible when georeferencing/rectification was done using the USGS maps, which cite National Mapping Accuracy Standard compliance. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey, National Wetlands Research Center Publication_Date: 2001 Title: Brown Marsh Rectified Aerial Photography Edition: first Geospatial_Data_Presentation_Form: Remote-Sensing Image Publication_Information: Publication_Place: Lafayette, LA Publisher: U.S. Geological Survey, National Wetlands Research Center Type_of_Source_Media: digital data base file Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20000927 Ending_Date: 20001115 Source_Currentness_Reference: Source Photography Date Source_Citation_Abbreviation: USGS CIR Source_Contribution: Primary data for photo interpretation and identification of wetland and upland classes. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey, National Mapping Division Publication_Date: 1998 Title: 1998 National Aerial Photography Program Geospatial_Data_Presentation_Form: Remote-Sensing Image Publication_Information: Publication_Place: Lafayette, LA Publisher: U.S. Geological Survey, National Wetlands Research Center Type_of_Source_Media: stable based material Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1998 Source_Currentness_Reference: Source Photography Date Source_Citation_Abbreviation: USGS NAPP Source_Contribution: Reference data for barren areas and new, questionable open water. Process_Step: Process_Description: Color infrared aerial photographs were photo interpreted for marsh habitat and upland habitat according to the MaDS classification. For questionable areas of barren and open water, the 1998 NAPP photography was used to ensure if the feature was dieback related. The interpreted photos were overlaid upon maps generated by the original photography. Process_Date: 2002-2003 Process_Step: Process_Description: The hard copy maps were scanned, georeferenced, and vectorized at the U.S. Geological Survey, National Wetlands Research Center using an Ideal FCS 8010 scanner, Arc8.3 georeferencing module and Able Software Corporation Raster to Vector (R2V) conversion software. Process_Date: 2003 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector 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: .61 Ordinate_Resolution: .61 Planar_Distance_Units: Meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: GRS80 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Marsh and Upland Habitat Entity_Type_Definition: Wetlands are saturated or inundated by water for an extended period of time during the growing season. For the photo interpretation process, the hydroregime results in hydric soil formation and hydrophytic plant species that present consistent aerial photographic signatures. For photointerpretation purposes, uplands are areas not periodically saturated or inundated, resulting in non-hydrophytic vegetation and soil signatures. Entity_Type_Definition_Source: Cowardin, Lewis M., Virginia Carter, Francis Goblet, and Edward T. Laroe. Classification of wetlands and deepwater habitats of the United States. U.S. Fish and Wildlife Service. Biological Services Program; FWS/OBS - 79/31. 103 pp. Attribute: Attribute_Label: data Attribute_Definition: The alphanumerical designation for the wetlands and upland in the brown marsh dieback impacted and non-impacted area. The values may have associated modifiers attached. Modifiers include x (excavated), s (spoil), h (impounded), g (mangrove), o (oil), r, (wrack), and k (artificial). The designations were developed by an ad hoc committee comprised of marsh dieback scientists and researchers. All designations were developed through the use of field observations, expertise of scientific community, and examination of aerial photography. The signature key was developed specifically for the marsh dieback. Attribute_Definition_Source: Ad hoc MaDS committee Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: EM Enumerated_Domain_Value_Definition: Healthy emergent marsh is comprised of relatively dense vegetation dominated by smooth cordgrass (Spartina alterniflora). Other emergent marsh species that may be present, usually to a considerably lesser extent include salt grass (Distichlis spicata), needle rush (Juncus romerianus), and roseau cane (Phragmites australis). Herbaceous species may occur, but do not contribute significantly to the photographic signature. The emergent vegetation is usually 0.3 to 1.5 m tall. Signature feature - brilliant fuchsia with an even texture. Enumerated_Domain_Value_Definition_Source: Ad hoc MaDS committee Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: SS Enumerated_Domain_Value_Definition: Scrub/shrub is composed of woody vegetation under 6 meters in height. Common species include mangrove (Avicennia germinans), toothache tree (Zanthoxylum clava-herculis), sugarberry (Celtis laevagata), wax myrtle (Myrica cerifera), saltbush (Baccharis halimifolia), yaupon (Ilex vomitoria), marsh elder (Iva frutescens), and live oak (Quercus virginiana). There are four subclasses, designated as 1 (Deciduous - uneven texture, color is variable but generally a pale pink), 2 (Evergreen - uneven texture, color is variable but generally a dark red), 3 (Mixed - Uneven texture with highly variable color), and 4 (Mangrove - uneven to smooth texture with consistent brilliant red). Enumerated_Domain_Value_Definition_Source: Ad hoc MaDS committee Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: FO Enumerated_Domain_Value_Definition: Forest - Forest cover is composed of roughly the same species as scrub/shrub, but canopy is greater than 6 meters in height. There are three subclasses, designated as 1 (Deciduous - uneven texture, color is variable but generally a pale pink), 3 (Evergreen - Uneven texture, color is variable but generally a dark red), and 4 (Mixed - uneven texture with highly variable color). Enumerated_Domain_Value_Definition_Source: Ad hoc MaDS committee Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: AB Enumerated_Domain_Value_Definition: Aquatic bed is composed of algae, floating aquatic, rooted submerged aquatic vegetation. Signature feature - smooth, smokey texture with variable color from dark purples to lavender. Enumerated_Domain_Value_Definition_Source: Ad hoc MaDS committee Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: OW Enumerated_Domain_Value_Definition: Open water is a vegetation-free water signature that is consistent with the 1998 NAPP photography as being open water to differentiate it from recent formation due to marsh dieback. Signature feature - Even texture and dark blue. Enumerated_Domain_Value_Definition_Source: Ad hoc MaDS committee Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: US Enumerated_Domain_Value_Definition: Unconsolidated shore is exposed vegetation-free soil, sand or exposed shell bed that is saturated or tidally inundated. Signature feature - Even texture and gray to bluish depending on the moisture present. Lack of moisture results in an even white color. Enumerated_Domain_Value_Definition_Source: Ad hoc MaDS committee Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: RS Enumerated_Domain_Value_Definition: Rocky shore is rip-rap deposited as oil canal plugs shore stabilization structures and other similar features. Signature feature - smooth texture, brilliant white. Enumerated_Domain_Value_Definition_Source: Ad hoc MaDS committee Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: USS Enumerated_Domain_Value_Definition: Upland scrub/shrub may be composed of a large list of plants including those within the wetland scrub/shrub signature. There are three subclasses, 1 (Deciduous - uneven texture, color is variable but generally a pale pink), 3 (Evergreen - uneven texture, color is variable but generally a dark red), and 4 (Mixed - uneven texture with highly variable color). Enumerated_Domain_Value_Definition_Source: Ad hoc MaDS committee Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: UF Enumerated_Domain_Value_Definition: Upland forest may be composed of the same species found in the upland scrub/shrub. The canopy greater than 6 meters. There are three subclasses, 1 (Deciduous - uneven texture, color is variable but generally a pale pink), 3 (Evergreen - uneven texture, color is variable but generally a dark red), and 4 (Mixed - Uneven texture with highly variable color). Enumerated_Domain_Value_Definition_Source: Ad hoc MaDS committee Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: UR Enumerated_Domain_Value_Definition: Upland range is mown grassland or pastures. Signature feature - texture is smooth with even light red color. No dark mottling present (indication of saturated soils). Enumerated_Domain_Value_Definition_Source: Ad hoc MaDS committee Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: UB Enumerated_Domain_Value_Definition: Upland barren is recently deposited or bulldozed areas. Signature feature - texture like oatmeal with a whitish-gray color. Enumerated_Domain_Value_Definition_Source: Ad hoc MaDS committee Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: UU Enumerated_Domain_Value_Definition: Upland urban is developed upland areas containing urban structures (houses, buildings, etc.) Enumerated_Domain_Value_Definition_Source: Ad hoc MaDS committee Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: IEM Enumerated_Domain_Value_Definition: Slightly impacted emergent marsh vegetation. Herbaceous plants exhibit some color characteristics similar to healthy vegetation. Signature feature - color is less brilliant to pale pink with even texture. No soil exposure.) Enumerated_Domain_Value_Definition_Source: Ad hoc MaDS committee Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: BM2 Enumerated_Domain_Value_Definition: Moderately impacted emergent marsh with intact vegetation signature. Signature feature - faint pink present with pale, gray-blue to whitish inclusions. Texture is still smooth without soil exposure. Enumerated_Domain_Value_Definition_Source: Ad hoc MaDS committee Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: USBM Enumerated_Domain_Value_Definition: Unconsolidated shore/severly impacted emergent marsh. Vegetation is less dense with some soil exposure. Signature feature - color is quite variable. The substrate color (faintly pale bluish to clear blue) is becoming increasingly evident through the pale pink to white vegetation. Texture is clumped white to pink inclusions on the bluish background. Enumerated_Domain_Value_Definition_Source: Ad hoc MaDS committee Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: USDM Enumerated_Domain_Value_Definition: Unconsolidated shore/dead emergent marsh. Stubble present with exposed soil as dominant signature. Signature feature - color is gray to bluish-gray with no apparent photosynthetic tissue. There is no pink component. Texture is very smooth and even. Color transitions are smooth and gradual. Enumerated_Domain_Value_Definition_Source: Ad hoc MaDS committee Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: IUS Enumerated_Domain_Value_Definition: Impacted, unconsolidated shore. Exposed soil with no vegetation present. Signature feature - color is dark blue with absolutely no reddish or pinkish component. Very little or no white or gray indicating stubble. Differential from non-impacted unconsolidated shore by use of 1998 NAPP photography. Enumerated_Domain_Value_Definition_Source: Ad hoc MaDS committee Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: NOW Enumerated_Domain_Value_Definition: Impacted open water. These areas were marsh prior to marsh dieback. These are the most degraded areas with elevation loss (through erosion and/or subsidence), allowing for the formation of permanent ponds within the marsh or confluence with pre-existing open water. Signature feature - signature is differential from non-impacted open water by use of 1998 NAPP photography. Enumerated_Domain_Value_Definition_Source: Ad hoc MaDS committee Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: IAB Enumerated_Domain_Value_Definition: Impacted aquatic beds. Marsh dieback areas that have been converted to aquatic vegetation. Signature feature - signature differentiated from unimpacted aquatic vegetation by use of 1998 NAPP photography. Enumerated_Domain_Value_Definition_Source: Ad hoc MaDS committee Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, National Wetlands Research Center Contact_Person: Scott Wilson Contact_Position: Electrical Engineer Contact_Address: Address_Type: Mailing and Physical Address Address: 700 Cajundome Blvd. City: Lafayette State_or_Province: Louisiana Postal_Code: 70506 Country: USA Contact_Voice_Telephone: 337 266-8644 Contact_Facsimile_Telephone: 337 266-8513 Contact_Electronic_Mail_Address: scott_wilson@usgs.gov Hours_of_Service: 8:00 a.m. to 4:00 p.m. Monday Through Friday Distribution_Liability: Although these data have been processed successfully on a computer system at the U.S. Geological Survey, National Wetlands Research Center, no warranty expressed or implied is made regarding the accuracy or utility of the data on 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 Biological Resources Division 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. U.S. Geological Survey, National Wetlands Research Center 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 limitation, the implied warranties or 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 US Government. Any downloading and use of these data signifies a user's agreement to comprehension and compliance of the U.S. Geological Survey, National Wetlands Research Center Standard Disclaimer. Insure all portions of metadata are read and clearly understood before using these data in order to protect both user and U.S. Geological Survey, National Wetlands Research Center interests. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE Format_Version_Number: 8.3 File_Decompression_Technique: ARC/INFO Export .e00 Compression Format Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://www.brownmarsh.net Fees: None, if data are available online. Custom_Order_Process: None Metadata_Reference_Information: Metadata_Date: 20030714 Metadata_Review_Date: 20030723 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: Mailing and Physical Address Address: 700 Cajundome Blvd City: Lafayette State_or_Province: Louisiana Postal_Code: 70506 Country: USA Contact_Voice_Telephone: 337 266-8500 Contact_Facsimile_Telephone: 337 266-8513 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 of the record to create a similar record of slightly altered data, such as reprojection. Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998