TITLE: FLORIDA'S STATEWIDE SEAGRASS

Geodataset Name:       SEAGRS
Geodataset Type:       SHAPEFILE
Geodataset Feature:    POLYGON

This dataset represents a compilation of statewide seagrass data. This data layer
is an update to SEAGRS released with FGDL Version 2003.

DATA SOURCE(S):                    Florida Marine Research Institute (FMRI)
SCALE OF ORIGINAL SOURCE MAPS:     N/A
DATE OF AUTOMATION OF SOURCE:      Source - 1999  Automated - 2003
GEODATASET EXTENT:                 State of Florida

FEATURE ATTRIBUTE TABLES:

Datafile Name: SEAGRS.DBF

FEATURE ATTRIBUTE TABLES CODES AND VALUES:

Item	Item Description
FID	Internal feature number.
SHAPE	Feature geometry.
DESCRIPT	Seagrass classification type Continuous = Continuous may range from 85% ground cover to 100%. The user should be aware that different sources and scales of seagrass 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 seagrass information and classification systems were used to create this dataset
ID	Unique identifier for each polygon

USER NOTES:

Attribute accuracy is relied on the integrity of the attribute information within the originl data layer

These data are for statewide mapping and analysis only. More recent data are available from FMRI for the South Florida Water Management District area. The original regional data sets may contain more detailed seagrass attribution schemes. This polygon GIS data set represents a compilation of statewide seagrass 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 seagrass and 9116 for continuous seagrass; some defined only presence and absence of seagrass, and some defined varying degrees of seagrass percent cover. In order to merge all of these data sources into one compilation data set, FMRI reclassified the various source data attribute schemes into two categories: "continuous" and "discontinuous" seagrass.

A note concerning data scale: Scale is an important factor in data usage. Certain scale datasetsare not suitable for some project, analysis, or modelling 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. 1:250000 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 analyses. Every effort has been made to supply the user with data documentation. For additional information, see the References sectionand the Data Source Contact section of this documentation. For more information regarding scale and accuracy, see our web pages at: http://www.geoplan.ufl.edu/education.html

REFERENCES:

FMRI For more information contact the FWC-FMRI (Florida Fish and Wildlife Conservation Commission-Florida Marine Research Institute) GIS data librarian at gislibrarian@fwc.state.fl.us http://ocean.floridamarine.org/mrgis/viewer.htm

DATA LINEAGE SUMMARY:

FMRI staff MAPJOINed seven regional seagrass data sets using ArcInfo Workstation. The source data sets had different attribute schemes, that FMRI staff consolidated into two categories for this data set: "continuous " and "discontinuous" seagrass. 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. FMRI 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: 20030000 GeoPlan downloaded this data in shapefile format from the FMRI FTP site: ftp.floridamarine.org/users/ism/datareq/ 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 OBJECT_I field from attribute table -Added DESCRIPT field based on COUNTY_NAM -Renamed shapefile from seagrass_fl_1987to1999_poly to SEAGRASS_ST_WIDE -Upcased SEAGRASS field Process Date: 20030000 Dataset moved. Process Date:

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 Marine Research Institute
FMRI
100 8th Ave SE
St. Petersburg, FL
33701-5095
(727) 896-8626


http://www.floridamarine.org/
gislibrarian@fwc.state.fl.us
GIS Data Librarian

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

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