Seagrass_2001

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Avineon, Inc.
Publication_Date: 20030820
Title: Seagrass_2001
Edition: (Version 8.1, August 20, 2003)
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name:
Issue_Identification:
Publication_Information:
Publication_Place: Clearwater, FL
Publisher: Avineon, Inc.
Online_Linkage:
\\palfile\sjrx\ES\IRL\projects\seagrass\layers\Seagrass_2001.shp
Description:
Abstract:
2001 IRL Seagrass coverage photointerpreted from May 2001 1:24,000 and 1:10,000 scale natural color aerial photography from Melbourne south to the Jupiter Inlet. Features were classified according to SFWMD/SJRWMD modified FLUCCS.
The 2001 seagrass data was stereoscopically collected using photogrammetric techniques; ground control obtained from GPS survey and USGS DOQQs, aerotriangulation of aerial photography, and stereo compilation using analytical stereoplotters.
The minimum mapping unit for classification is 0.25 acres (=0.1 hectares). The horizontal accuracy of the data meets NMAS for 1:24,000 scale maps (+/- 40 feet). No thematic accuracy assessment was performed on this dataset. Pre-interpretation groundtruthing was performed on the aerial photography, 200 field points were selected, 100 of the highest priority sites were field checked and additional sites were checked on an ad hoc basis.
Purpose:
A primary objective of the Indian River Lagoon (IRL) Surface Water Improvement and Management (SWIM) Plan is to protect and restore seagrasses. The IRL SWIM Plan directs the South Florida and St. Johns River Water Management Districts to map seagrasses in the Indian River Lagoon at two to three year intervals. Accordingly, Indian River Lagoon seagrass maps have been prepared for the following years: 1986, 1989, 1992, 1994, 1996, and 1999.
These lagoon-wide maps, based on aerial photographs, provide an overall picture of the seagrass resources in the IRL. These maps serve as important management tools for obtaining a current inventory of this resource, identifying "healthy" areas that may deserve special protection efforts, and identifying potential "problem" areas that require further investigation. The maps can also document large-scale trends in the status of this resource.
Supplemental_Information: none
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20010531
Currentness_Reference: source photography date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Every 2 years.
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -80.622271
East_Bounding_Coordinate: -80.060728
North_Bounding_Coordinate: 28.122769
South_Bounding_Coordinate: 26.939491
Keywords:
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: seagrass
Theme_Keyword: SAV
Theme_Keyword: benthic habitat
Theme_Keyword: submerged aquatic vegetation
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: Indian River
Place_Keyword: Indian River Lagoon
Place_Keyword: IRL
Place_Keyword: Mosquito Lagoon
Place_Keyword: Banana River
Place_Keyword: ICW
Access_Constraints: none
Use_Constraints:
Acknowledgement of Avineon Inc. would be appreciated in products derived from this data. The positional accuracy of this data meets USGS NMAS for 1:24000 scale maps (+/- 40 feet). There is no Stated thematic accuracy for interpreted polygons representing habitat.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Keith Patterson
Contact_Organization: Avineon, inc.
Contact_Position: Director - Photogrammetry, Mapping, & GIS
Contact_Address:
Address_Type: mailing
Address: 15500 Lightwave Drive, Suite 200
City: Clearwater
State_or_Province: FL
Postal_Code: 33760
Country: United States of America
Contact_Voice_Telephone: (727)539-1661
Contact_Facsimile_Telephone: (727)539-6954
Contact_Electronic_Mail_Address: kpatterson@avineon.com
Data_Set_Credit:
Avineon Inc. Phtointerpretation Staff- Mike White, Dan Bubser, Lesley Ward
SJRWMD Project Manager- Robert Virnstein
SFWMD Project Manager- Becky Robbins
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.1.1332
Cross_Reference:
Citation_Information:
Originator:
Publication_Date:
Title:
Geospatial_Data_Presentation_Form:
Series_Information:
Series_Name:
Issue_Identification:
Publication_Information:
Publication_Place:
Publisher:
Online_Linkage:

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Attribute accuracy was tested by visual comparison of the aerial photographs with the seagrass data to ensure consistency with the classificaton system and photo signatures. Pre-interpretation groundtruthing was also performed to aid in delineation and classification of photo signatures. Additional checks for valid attributes, as defined by the SJRWMD/SFWMD modified FLUCCS, were performed.
Logical_Consistency_Report:
Polygon and chain-node topology present. NODEERRORS run with Dangle option. No dangles present. UNSPLIT used to remove superfluous pseudo-nodes. LABELERRORS run, with all polygons attributed. RELATE was employed to check for contiguous arcs. No arcs have the same attribute on both sides.
Completeness_Report:
Minimum mapping unit for seagrass, algae beds and unvegetated bottom polygons is 0.25 acres. The study area boundary for the project was defined by the SJRWMD. Features were captured and classified according to the minimum mapping unit guideline and the SJRWMD/SFWMD modified FLUCCS.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Ground controlpoints were provided by the SJRWMD from the 1996 and 1999 mapping efforts. These points included both GPS survey points and control points collected from USGS 1m DOQQ's. Horizontal positional accuracy of the data meets NMAS for 1:24000 scale maps, approximately +/- 40 feet. Digital linework was reviewed over USGS DOQQ and the 1999 seagrass data. Well defined features on the images and 1999 data were inspected for comparison to 2001 linework collected representing those features. GPS points were also collected during 2003 seagrass field work at well defined features and compared against coordinates for the same features on the 2001 data.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: US Imaging
Publication_Date:
Title: Indian River Lagoon
Geospatial_Data_Presentation_Form: Aerial photography
Series_Information:
Series_Name:
Issue_Identification:
Publication_Information:
Publication_Place:
Publisher:
Source_Scale_Denominator: 24000 and 10000
Type_of_Source_Media: True color diapositives, stereo coverage
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2001/05/31
Source_Currentness_Reference: calendar date
Source_Citation_Abbreviation: (none)
Source_Contribution:
photographic signature for interpretation of seagrass data.
Process_Step:
Process_Description:
The District supplied the ground control from the 1996 mapping effort. The points were documented with hand drawn illustrations of the exact point positions as well as photocopies of the 1996 aerial photos, which highlighted the general point locations. The documentation also provided the latitude and longitude coordinates and the frame number from the 1996 aerial photos, for each point. These items were referenced to identify and transfer the points to the 2001 aerial photo layout. In 1999 Avineon had collected several new control points from USGS DOQQ's to densify the control network, filling in the gaps where necessary. The pixel coordinate values, which are embedded within the digital orthophotographic imagery, were collected for photoidentifiable features on the DOQQ image. Hand drawn illustrations were also prepared for these points. Most of the original control points were recovered from documentation and used.
The values for the points provided from the 1996 project were expressed as geographic coordinates (latitude/longitude), NAD83, Feet. The values for the points collected from DOQQ were expressed in UTM coordinates, NA83, Meters. All coordinates were transformed; using a conversion program called Corpscon, to Stateplane coordinates, NAD83, Feet.
Process_Date: 20030820
Process_Step:
Process_Description:
After GCP layout, pass and tie points were marked on the photography and then “pugged” with a Wild PUG4 machine. Pugging is a process by which small holes (60 microns) are drilled in the emulsion on the photography. This way they are visible through the optics of the P-3 stereo plotter. Analytical measurement of all points was then done creating a file of coordinates that was exported using PAT B software for a block adjustment and densification of the ground control points. Analytical Aerotriangulation is a method of densification of photogrammetric control points using the minimum amount of Horizontal and Vertical ground control points necessary. It is performed mathematically using a least squares adjustment software. Baymont utilized PAT-B software to perform a Full Bundle Adjustment solution. The bundle method is a fully analytical method that provides a simultaneous adjustment solution of colinearity equations representing all the image rays in a Block of photography. The algorithms, in effect, use known control point positions along with camera lens calibration data to extrapolate values for unknown positions. The input for the mathematical adjustment are: photo coordinate for all control points (photogrammetric and surveyed) photo by photo, calibrated focal lens length, and ground coordinates for the orthophoto derived control points. The output includes adjusted ground coordinates of each control point to be used to orient the stereo model (or pair of photographs) and exterior parameters of the orientation of the camera (position and angles of the exposure). The resulting solution was then converted to the final coordinate file used for compilation of the mapping project on the Zeiss P-3 first order analytical stereoplotter.
Process_Date: 20030820
Process_Step:
Process_Description:
Avineon’s photointerpreters used the SJRWMD/SFWMD modified FLUCCS to map the seagrass habitat within the project area. 2001 groundtruthing data, 1999 IRL Seagrass ARC/INFO coverage,and 2001 transect data collected by the District were used as collateral materials to assist in photointerpretation. Throughout the photointerpretation process, positional accuracy of seagrass habitat boundaries was maintained according to the photographic signatures apparent on the photography.
Process_Date: 20030820
Process_Step:
Process_Description:
Data compilation for the project was accomplished on Avineon’s Zeiss P3 analytical stereoplotters. Seagrass habitat boundaries were photogrammetrically digitized using CadMap/dgn software running on Pentium Windows 2000 workstations. Digital data georeferenced to the triangulated aerial photos is captured directly in MicroStation NT (Bentley Microsystems, Inc.) for later importation to ARC/INFO.
Process_Date: 20030820
Process_Step:
Process_Description:
At the conclusion of the photointerpretation task the Cadmap/dgn data file produced on the analytical stereoplotter was translated to ARC/INFO. Once the data was exported to ARC/INFO, processes for building topology and validating the coverage were completed. Unique identifiers (record numbers) for resulting polygons were assigned automatically by the system according to normal ARC/INFO conventions. Before generating label points for each polygon, the graphics were further validated to ensure that no dangling arcs escaped the polygon-building step. Dangling arcs were detected and corrected during an interactive ArcEdit session by technicians trained in vector polygon cleanup. A May 2001 Seagrass polygon coverage for each of Indian River Lagoon from Melbourne south to the Jupiter Inlet was delivered to the District in ARC/INFO export format on compact disc.
Process_Date: 20030820
Process_Step:
Process_Description:
First draft of metadata created by smolikc using FGDCMETA.AML ver. 1.2 05/14/98 on ARC/INFO data set x:\env\irl_2001\final_processing\irl01_stat
Process_Date: 20030820
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: C:\Temp\xmlD83.tmp

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000000
Ordinate_Resolution: 0.000000
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: D_North_American_1983_HARN
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Resolution: 1.000000
Altitude_Encoding_Method:
Explicit elevation coordinate included with horizontal coordinates

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: ESLIB.SEAGRASS01_SHORELINE99
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: LD_TARGETS
Attribute:
Attribute_Label: AREA_ACRES
Attribute:
Attribute_Label: SHORELINE_YR
Attribute:
Attribute_Label: SEAGRASS_YR
Attribute:
Attribute_Label: SEAGRASS
Attribute:
Attribute_Label: SUB_LAGOON
Attribute:
Attribute_Label: HABITAT
Attribute:
Attribute_Label: SHAPE.AREA
Attribute:
Attribute_Label: SHAPE.LEN
Overview_Description:
Entity_and_Attribute_Overview:

IRL01_UTM.PAT:

COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
    1  AREA                   8    18     F      5
    9  PERIMETER              8    18     F      5
   17  IRL01_UTM#             4     5     B      -
   21  IRL01_UTM-ID           4     5     B      -
   25  HABITAT               16    16     C      -

AREA - predefined coverage field.

PERIMETER - predefined coverage field.

IRL01_STAT# - predefined coverage field.

IRL01_STAT-ID - predefined coverage field.

HABITAT - polygons will be annotated using a modification of the Florida Land Use
          and Cover Classification System (FLUCCS). The categories to be used are
          listed and described below.

  FLUCCS code 9116, Seagrass, continuous, dense --  The dominant feature of these
                    seagrass beds is that they are continuous in nature, with
                    interconnected areas of seagrass.  These beds may contain many
                    small interspersed patches of sparsely vegetated or unvegetated
                    bottom, and thus would have a lower limit of about 50 - 60%
                    cover of seagrass.  Only sand patches greater than 0.25 acres
                    should be distinguished within a continuous, dense bed.  Species
                    composition is not mapped.

  FLUCCS code 9113, Areas 0.25 acres or greater in size that consist of primarily
                    (greater than 50%) bare bottom in which many small patches
                    (each less than 0.25 acres) of seagrass are scattered, and
                    where the seagrass patches are not interconnected.  (For this
                    study, the lower limit of what constitutes a seagrass bed is
                    approximately 10% cover; areas with <10% cover are considered
                    "unvegetated bottom"

  FLUCCS code 5400, Barren substrate with little or no perceptible seagrass (<10%)
                    or only algae.

  FLUCCS code 9121, In a few cases, beds of algae may be distinguishable from
                    seagrass.  Where these areas are identifiable on the photography
                    AND field checked during field trips conducted for seagrass
                    mapping they should be mapped (if >10% cover), although this is
                    not a high priority and there is no intent to accurately map all
                    algae beds as part of this project.  (In some cases, drift algae
                    will accumulate in seagrass beds.  In these cases, the area should
                    be mapped as seagrass, and the density should be based on seagrass
                    density only, not algae.)
IRL01_UTM.AAT:

COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
    1  FNODE#                 4     5     B      -
    5  TNODE#                 4     5     B      -
    9  LPOLY#                 4     5     B      -
   13  RPOLY#                 4     5     B      -
   17  LENGTH                 8    18     F      5
   25  IRL01_UTM#             4     5     B      -
   29  IRL01_UTM-ID           4     5     B      -


  All Arc Attribute Table items are predefined by Arc/Info.  There is no linear
  attribution in this coverage.
Entity_and_Attribute_Detail_Citation: none

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Saint Johns River Water Management District
Contact_Position:
Contact_Address:
Address_Type: mailing and physical address
Address: Highway 100 West, P.O. Box 1429
City: Palatka
State_or_Province: FL
Postal_Code: 32178
Country: USA
Contact_Voice_Telephone: 386-329-4362
Contact_Electronic_Mail_Address: rvirnstein@sjrwms.com
Contact_Instructions: (Contact via email)
Resource_Description: Downloadable Data
Distribution_Liability:
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 8.896

Metadata_Reference_Information:
Metadata_Date: 20070227
Metadata_Review_Date:
Metadata_Future_Review_Date:
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Avineon, Inc.
Contact_Person: Keith Patterson
Contact_Position: Director- Phtogrammetry, Mapping, & GIS
Contact_Address:
Address_Type: mailing and physical address
Address: 15500 Lightwave Drive, Suite 200
City: Clearwater
State_or_Province: FL
Postal_Code: 33760
Country: USA
Contact_Voice_Telephone: 727-539-1661
Contact_Facsimile_Telephone: 727-539-6954
Contact_Electronic_Mail_Address: kpatterson@avineon.com
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: none
Metadata_Use_Constraints: none

Generated by mp version 2.9.12 on Wed Jul 01 15:51:14 2015