FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION
VERSION 2006

TITLE: FLORIDA'S STATEWIDE SEAGRASS

Geodataset Name:       SEAGRS_2003
Geodataset Type:       SHAPEFILE
Geodataset Feature:    Polygon
Feature Count:         24705
GENERAL DESCRIPTION:
This dataset represents a compilation of statewide sea grass data.
DATA SOURCE(S):                    Florida Fish and Wildlife Conservation Commission (FWC), Fish and Wildlife Research Institute (FWRI), Center for Spatial Analysis
SCALE OF ORIGINAL SOURCE MAPS:     Various
DATE OF AUTOMATION OF SOURCE:      2003
GEODATASET EXTENT:                 State of Florida

FEATURE ATTRIBUTE TABLES:

Datafile Name: SEAGRS_2003.DBF
ITEM NAME WIDTH TYPE
OBJECTID
4 OID
FGDLAQDATE
8 Date
DESCRIPT
20 String
SHAPE
4 Geometry
AUTOID
4 Integer
SHAPE.AREA
0 Double
SHAPE.LEN
0 Double

FEATURE ATTRIBUTE TABLES CODES AND VALUES:

Item
Item Description
OBJECTID Internal feature number.

FGDLAQDATE FGDL added field based on date downloaded from source.

DESCRIPT FGDL added field based on SEAGRASS field (which was removed). Seagrass classification type
CONTINUOUS = Continuous may range from 85% ground cover to 100%. The user should be aware that different sources and scales of sea grass information and classification systems were used to create this dataset

DISCONTINUOUS = Discontinuous may range from 0 to 90% ground cover. The user should be aware that different sources and scales of sea grass information and classification systems were used to create this dataset


SHAPE Feature geometry.

AUTOID Unique ID added by GeoPlan

SHAPE.AREA Area

SHAPE.LEN Perimeter


USER NOTES:
This data is provided 'as is'. GeoPlan relied on the integrity
of the original data layer's topology
This polygon GIS data set represents a compilation of statewide sea grass 
data from various source agencies and scales. The data sources were 
mapped from photography ranging in date from 1987 to 1999. The original 
source data sets were not all classified in the same manner; some used the 
Florida Land Use Cover and Forms Classification System (FLUCCS) codes 
9113 for discontinuous sea grass and 9116 for continuous sea grass; some 
defined only presence and absence of sea grass, and some defined varying 
degrees of sea grass percent cover. In order to merge all of these data sources 
into one compilation data set, FWRI reclassified the various source data attribute 
schemes into two categories: "continuous" and "discontinuous" sea grass.
GeoPlan relied on the integrity of the attribute information within
the original data.

This data set is an update to include 1999 data in the statewide 
sea grass data set.

This data is provided 'as is' and its horizontal positional accuracy
has not been verified by GeoPlan

This data is provided 'as is' and its vertical positional accuracy
has not been verified by GeoPlan

THE DATA INCLUDED IN FGDL ARE 'AS IS' AND SHOULD NOT BE CONSTRUED
AS LEGALLY BINDING. THE UNIVERSITY OF FLORIDA GEOPLAN CENTER SHALL
NOT BE LIABLE FOR ANY DAMAGES SUFFERED AS A RESULT OF USING,
MODIFYING, CONTRIBUTING OR DISTRIBUTING THE MATERIALS.

A note about data scale: 

Scale is an important factor in data usage.  Certain scale datasets
are not suitable for some project, analysis, or modeling purposes.
Please be sure you are using the best available data. 

1:24000 scale datasets are recommended for projects that are at the
county level.
1:24000 data should NOT be used for high accuracy base mapping such
as property parcel boundaries.
1:100000 scale datasets are recommended for projects that are at the
multi-county or regional level.
1:125000 scale datasets are recommended for projects that are at the
regional or state level or larger.

Vector datasets with no defined scale or accuracy should be
considered suspect. Make sure you are familiar with your data
before using it for projects or analysis. Every effort has been
made to supply the user with data documentation. For additional
information, see the References section and the Data Source Contact
section of this documentation. For more information regarding
scale and accuracy, see our webpage at:
http://geoplan.ufl.edu/education.html

REFERENCES:
For more information contact the Florida Fish
and Wildlife Conservation Commission-Fish 
and Wildlife Research Institute,
Division of Marine Fisheries Management (DMFM)
GIS data librarian at gislibrarian@myfwc.com
http://ocean.floridamarine.org/mrgis/viewer.htm

DATA LINEAGE SUMMARY:
FWC-FWRI staff MAPJOINed seven regional sea grass data sets using ArcInfo 
Workstation. The source data sets had different attribute schemes, that 
FWC-FWRI staff consolidated into two categories for this data set: "Continuous" 
and "Discontinuous" sea grass. In areas of overlap between source data 
sets, the more recent source was used. No edgematching was performed 
between data sets of differing source dates. FWC-FWRI converted these data 
to shapefile and geodatabase format for additional analyses. Data have 
been UNIONed with county boundaries extended beyond Florida state waters.
Process Date: 2003

GeoPlan downloaded this data in shapefile format from the Florida Fish and Wildlife Conservation Commission-Fish and Wildlife Research Institute website (http://ocean.floridamarine.org/mrgis/viewer.htm) and projected to FGDL Albers HPGN. When received, the data was in Geographic projection, Datum: NAD 83, Spheroid: GRS1980. - Reprojected data to FGDL Albers HPGN - Deleted OBJECTID field from attribute table - Deleted SEAGRASS field (See DESCRIPT) - Added DESCRIPT field based on SEAGRASS field - Renamed shapefile from fl_sgrass to seagrs_2003 - Upcased all fields - Verified area and perimeter fields using X-tools Process Date: 20060525
MAP PROJECTION PARAMETERS:

Projection                          ALBERS
Datum                               HPGN
Units                               METERS
Spheroid                            GRS1980
1st Standard Parallel               24  0  0.000
2nd Standard Parallel               31 30  0.000
Central Meridian                   -84 00  0.000
Latitude of Projection's Origin     24  0  0.000
False Easting (meters)              400000.00000
False Northing (meters)             0.00000

DATA SOURCE CONTACT (S):

Name:
Abbr. Name:
Address:


Phone:

Web site:
E-mail:
Contact Person:
         Phone:
        E-mail:
Florida Fish and Wildlife Conservation Commission-Fish and Wildlife Research Institute
FWRI
100 Eighth Avenue Southeast
St. Petersburg, Florida
33701
727-896-8626

http://ocean.floridamarine.org/mrgis/viewer.htm GISLibrarian@MyFWC.com GIS Data Librarian

FGDL CONTACT:
Name:                   FLORIDA GEOGRAPHIC DATA LIBRARY
Abbr. Name:             FGDL
Address:                Florida Geographic Data Library
                        431 Architecture Building
                        PO Box 115706
                        Gainesville, FL  32611-5706
Web site:               http://www.fgdl.org

Contact FGDL: 

      Technical Support:	        http://www.fgdl.org/fgdlfeed.html
      FGDL Frequently Asked Questions:  http://www.fgdl.org/fgdlfaq.html
      FGDL Mailing Lists:		http://www.fgdl.org/fgdl-l.html
      For FGDL Software:                http://www.fgdl.org/software.html