Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey, National Wetlands Research Center Publication_Date: 19980101 Title: Mississippi Sound, MS - 1992 Submerged Aquatic Vegetation Geospatial_Data_Presentation_Form: Digital vector data Description: Abstract: This data set consists of digital data describing the submerged aquatic vegetation (seagrass) beds of the Mississippi Sound off the Mississippi Coast, in 1992. The data set includes 13 7.5' quadrangles, which were digitized at the Mid-Continent Ecological Science Center from 1:24,000 scale hard copy maps developed by the U.S. Geological Survey, National Wetlands Research Center. The seagrass beds were classified according to a U.S. Geological Survey, National Wetlands Research Center derived classification scheme based on the C-CAP Coastal Land Cover Classification system of NOAA Coastwatch Change Analysis Project. Purpose: The intended use of this data set is to provide a comprehensive assessment of the distribution and extent of seagrass habitat communities along the Northeast Gulf of Mexico. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 19920101 Currentness_Reference: Photography Date Status: Progress: Complete Maintenance_and_Update_Frequency: None Planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -89.250 East_Bounding_Coordinate: -88.250 North_Bounding_Coordinate: 30.125 South_Bounding_Coordinate: 30.500 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Submerged Aquatic Vegetation Theme_Keyword: Seagrass Place: Place_Keyword_Thesaurus: None Place_Keyword: Mississippi Sound Place_Keyword: Mississippi Coast Place_Keyword: USA Place_Keyword: Mississippi Place_Keyword: MS Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: 1992 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 Data_Set_Credit: The U.S. Geological Survey, National Wetlands Research Center would like to acknowledge the participation of the field staff for NPS Gulf Islands National Seashore, USFWS Dauphin Island Sea Lab, Mississippi State University, Alabama Dept. of Conservation and Natural Resources, and Florida Dept of Environmental Protection for their assistance in groundtruthing activities. Native_Data_Set_Environment: ARC/INFO Version 7.1.1 double precision, UNIX Solaris operating system Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Interpreted photos were quality checked by two photo interpreters for attribute classification. Field verification was performed for areas where attribute classification was questionable; local personnel with state and federal agencies assisted in field identification. The mylar-based 1:24,000 maps were checked by cartographic personnel for line and labelworks. The attribute accuracy is tested by manually comparing hard copy plots of the digital data with the source materials. When attributes cannot be visually verified on plots they are interactively queried and verified on screen. In addition, the attributes are compared against a master set of valid attributes. Logical_Consistency_Report: ARC/INFO software is used to create and maintain topological relationships between features. There are no duplicate features, but coincident lines are maintained between data layers where appropriate. Polygonal features begin and end at the same point, contain no overshoots or undershoots, and contain a single label. Linear features are continuous where appropriate, i.e., dangling arcs are removed if they are not required. Completeness_Report: For cartographic process, accordance with nationally accepted mapping standards and conventions were followed. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The horizontal positional accuracy is tested by visual comparison of hard copy check plots to the source materials and verifying the location of the data on-screen relative to other data layers in the same geographic area. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Not applicable Lineage: Source_Information: Source_Citation: Citation_Information: Originator: National Aeronautics and Space Adminstration Publication_Date: 19920601 Title: Natural Color Aerial Photography Edition: Varies Geospatial_Data_Presentation_Form: Remote-Sensing Image Publication_Information: Publication_Place: NASA Ames,California Publisher: National Aeronautics and Space Administration (NASA), United States Source_Scale_Denominator: 24000 Type_of_Source_Media: Stable-Base Material Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 19920601 Source_Currentness_Reference: Photography Date Source_Citation_Abbreviation: NASA NC Source_Contribution: Primary data for photo interpretation and identification of submerged vegetation. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey (USGS) Publication_Date: 19830101 Title: Various Quadrangles Geospatial_Data_Presentation_Form: Map Series_Information: Series_Name: USGS Standard Series of 7.5-minute Topographic Quadrangles Issue_Identification: Mississippi Catalog of Topographic and Other Published Maps Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey (USGS) Source_Scale_Denominator: 24000 Type_of_Source_Media: Paper Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19800101 Ending_Date: 19950101 Source_Currentness_Reference: Publication Date Source_Citation_Abbreviation: USGS quads Source_Contribution: Provided base maps for submerged aquatic vegetation information Process_Step: Process_Description: Cartographic process: Planning for the flight mission was prepared according to shoreline distance. After acquiring the aerial photography, stereo pairs were created and packaged according to 1:24,000 topographic maps; these maps also served as base maps for cartographic transformation work. The photos were interpreted using a Bausch Lomb stereoscope at 10X magnification. Cartographic work was performed using a Zoom Transfer Scope, and magnification varied according to source material scale. Process_Date: 1994-1998 Process_Step: Process_Description: Digitizing Process: Mylar overlays were manually digitized using an Altek Datatab digitizer to capture the data at a resolution of at least 0.001 inches. Four control points corresponding to the four corners of the quadrangle were used for registration during data collection. Cover type features continuing onto adjacent quadrangles were adjusted to intersect the quad boundary at a common, coincident node. Attributes were assigned as the data were digitized, or in an editing session after the digitizing was completed. Process_Date: 1994-1998 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: 16 Transverse_Mercator: Longitude_of_Central_Meridian: -87 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 1927 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.4 Denominator_of_Flattening_Ratio: 249.98 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Submerged aquatic vegetation (SAV) Entity_Type_Definition: Aquatic vegetation, rooted, found up to 6 meters of water Entity_Type_Definition_Source: C-CAP Coastal Land Cover Classification System (NOAA): Dobson, J.E., et.al NOAA Coastwatch Change Analysis Project. United States, National Oceanic and Atmospheric Administration Attribute: Attribute_Label: Sub_aq_veg Attribute_Definition: Submerged aquatic vegetation as a percentage of ground cover Attribute_Definition_Source: C-CAP Coastal Land Cover Classification System Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: CSG Enumerated_Domain_Value_Definition: Continuous seagrass, 90% or more ground cover Enumerated_Domain_Value_Definition_Source: C-CAP Coastal Land Cover Classification System Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: PSG1 Enumerated_Domain_Value_Definition: Patchy seagrass, 10% or less ground cover Enumerated_Domain_Value_Definition_Source: C-CAP Coastal Land Cover Classification System Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: PSG2 Enumerated_Domain_Value_Definition: Patchy seagrass, 15% to 40% ground cover Enumerated_Domain_Value_Definition_Source: C-CAP Coastal Land Cover Classification System Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: PSG3 Enumerated_Domain_Value_Definition: Patchy seagrass, 45% to 70% ground cover Enumerated_Domain_Value_Definition_Source: C-CAP Coastal Land Cover Classification System Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: PSG4 Enumerated_Domain_Value_Definition: Patchy seagrass, 75% to 85% ground cover Enumerated_Domain_Value_Definition_Source: C-CAP Coastal Land Cover Classification System Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: EST Enumerated_Domain_Value_Definition: Estuarine, open water or any non-seagrass estuarine habitat Enumerated_Domain_Value_Definition_Source: C-CAP Coastal Land Cover Classification System Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: RIV Enumerated_Domain_Value_Definition: Riverine, open water (fresh open water) Enumerated_Domain_Value_Definition_Source: C-CAP Coastal Land Cover Classification System Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: ALG Enumerated_Domain_Value_Definition: Algae, delineated only when its presence has been verified by groundtruthing Enumerated_Domain_Value_Definition_Source: C-CAP Coastal Land Cover Classification System Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: LAND Enumerated_Domain_Value_Definition: Shoreline, tidal or non-tidal, developed/urban, or irregularly flooded beach or bare ground. Enumerated_Domain_Value_Definition_Source: C-CAP Coastal Land Cover Classification System Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: MOL Enumerated_Domain_Value_Definition: Mollusk, oyster reef or beds, delineated only when its presence has been verified by groundtruthing. Enumerated_Domain_Value_Definition_Source: C-CAP Coastal Land Cover Classification System Distribution_Information: Distributor: 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: Louisiana 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 Hours_of_Service: 8:00 a.m. to 4:00 p.m. Monday Through Friday Resource_Description: Mississippi Sound, Mississippi - 1992 Submerged Aquatic Vegetation 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: 7.1.1 File_Decompression_Technique: ARC/INFO e00 Compression Format Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://sdms.nwrc.gov Fees: None, if data are available online. Custom_Order_Process: None Metadata_Reference_Information: Metadata_Date: 19981028 Metadata_Review_Date: 20011030 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: LA 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