Apalachee Bay, FL - 1992 Submerged Aquatic Vegetation

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
Publication_Date: 19980101
Title: Apalachee Bay, FL - 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 in the Apalachee Bay of Florida in 1992. The data set includes 14 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 NWRC 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: -84.500
East_Bounding_Coordinate: -83.750
North_Bounding_Coordinate: 30.125
South_Bounding_Coordinate: 29.750

Keywords:

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: Submerged Aquatic Vegetation
Theme_Keyword: Seagrass

Place:

Place_Keyword_Thesaurus: None
Place_Keyword: Apalachee Bay
Place_Keyword: USA
Place_Keyword: Florida
Place_Keyword: FL

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 NWRC 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 acknowledges the participation of the field staff from NPS, USFWS, Mississippi State University, Alabama Dept. of Conservation and Natural Resources, and Florida Dept. of Environmental Protection for groundtruthing.

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: 19920101

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: 19920101

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: National Aeronautics and Space Adminstration (NASA)

Publication_Date: 19920101

Title: Color Infrared 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: 32500

Type_of_Source_Media: Stable-Base Material

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 19920101

Source_Currentness_Reference: Photography Date

Source_Citation_Abbreviation: NASA CIR

Source_Contribution:

Supplemental data for photo interpretation and identification of submerged aquatic 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:: Florida 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:

Indirect_Spatial_Reference: Not applicable
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