File contents

<?xml version="1.0" encoding="ISO-8859-1"?>
<metadata>
<idinfo>
<citation>
<citeinfo>
<origin>U.S. Geological Survey, National Wetlands Research Center</origin>
<pubdate>19980101</pubdate>
<title>Mississippi Sound, MS - 1992 Submerged Aquatic Vegetation</title>
<geoform>Digital vector data</geoform>
</citeinfo>
</citation>
<descript>
<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&apos;
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.
</abstract>
<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.
</purpose>
</descript>
<timeperd>
<timeinfo>
<sngdate>
<caldate>19920101</caldate>
</sngdate>
</timeinfo>
<current>Photography Date</current>
</timeperd>
<status>
<progress>Complete</progress>
<update>None Planned</update>
</status>
<spdom>
<bounding>
<westbc>-89.250</westbc>
<eastbc>-88.250</eastbc>
<northbc>30.125</northbc>
<southbc>30.500</southbc>
</bounding>
</spdom>
<keywords>
<theme>
<themekt>None</themekt>
<themekey>Submerged Aquatic Vegetation</themekey>
<themekey>Seagrass</themekey>
</theme>
<place>
<placekt>None</placekt>
<placekey>Mississippi Sound</placekey>
<placekey>Mississippi Coast</placekey>
<placekey>USA</placekey>
<placekey>Mississippi</placekey>
<placekey>MS</placekey>
</place>
<temporal>
<tempkt>None</tempkt>
<tempkey>1992</tempkey>
</temporal>
</keywords>
<accconst>
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&apos;s suitability for other purposes.
</accconst>
<useconst>
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.
</useconst>
<ptcontac>
<cntinfo>
<cntorgp>
<cntorg>U.S. Geological Survey, National Wetlands Research Center</cntorg>
<cntper>Larry Handley</cntper>
</cntorgp>
<cntpos>Geographer and Principle Investigator</cntpos>
<cntaddr>
<addrtype>Mailing and Physical Address</addrtype>
<address>700 Cajundome Blvd</address>
<city>Lafayette</city>
<state>LA</state>
<postal>70506</postal>
<country>USA</country>
</cntaddr>
<cntvoice>337 266-8691</cntvoice>
<cntfax>337 266-8513</cntfax>
<cntemail>larry_handley@usgs.gov</cntemail>
</cntinfo>
</ptcontac>
<datacred>
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.
</datacred>
<native>ARC/INFO Version 7.1.1 double precision, UNIX Solaris operating system</native>
</idinfo>
<dataqual>
<attracc>
<attraccr>
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.
</attraccr>
</attracc>
<logic>
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.
</logic>
<complete>
For cartographic process, accordance with nationally accepted mapping
standards and conventions were followed.
</complete>
<posacc>
<horizpa>
<horizpar>
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.
</horizpar>
</horizpa>
<vertacc>
<vertaccr>Not applicable</vertaccr>
</vertacc>
</posacc>
<lineage>
<srcinfo>
<srccite>
<citeinfo>
<origin>National Aeronautics and Space Adminstration</origin>
<pubdate>19920601</pubdate>
<title>Natural Color Aerial Photography</title>
<edition>Varies</edition>
<geoform>Remote-Sensing Image</geoform>
<pubinfo>
<pubplace>NASA Ames,California</pubplace>
<publish>
National Aeronautics and Space Administration (NASA),
United States
</publish>
</pubinfo>
</citeinfo>
</srccite>
<srcscale>24000</srcscale>
<typesrc>Stable-Base Material</typesrc>
<srctime>
<timeinfo>
<sngdate>
<caldate>19920601</caldate>
</sngdate>
</timeinfo>
<srccurr>Photography Date</srccurr>
</srctime>
<srccitea>NASA NC</srccitea>
<srccontr>
Primary data for photo interpretation and identification of
submerged vegetation.
</srccontr>
</srcinfo>
<srcinfo>
<srccite>
<citeinfo>
<origin>U.S. Geological Survey (USGS)</origin>
<pubdate>19830101</pubdate>
<title>Various Quadrangles</title>
<geoform>Map</geoform>
<serinfo>
<sername>
USGS Standard Series of 7.5-minute Topographic
Quadrangles
</sername>
<issue>
Mississippi Catalog of Topographic and Other Published
Maps
</issue>
</serinfo>
<pubinfo>
<pubplace>Reston, Virginia</pubplace>
<publish>U.S. Geological Survey (USGS)</publish>
</pubinfo>
</citeinfo>
</srccite>
<srcscale>24000</srcscale>
<typesrc>Paper</typesrc>
<srctime>
<timeinfo>
<rngdates>
<begdate>19800101</begdate>
<enddate>19950101</enddate>
</rngdates>
</timeinfo>
<srccurr>Publication Date</srccurr>
</srctime>
<srccitea>USGS quads</srccitea>
<srccontr>Provided  base maps for submerged aquatic vegetation information</srccontr>
</srcinfo>
<procstep>
<procdesc>
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.
</procdesc>
<procdate>1994-1998</procdate>
</procstep>
<procstep>
<procdesc>
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.
</procdesc>
<procdate>1994-1998</procdate>
</procstep>
</lineage>
</dataqual>
<spdoinfo>
<direct>Vector</direct>
</spdoinfo>
<spref>
<horizsys>
<planar>
<gridsys>
<gridsysn>Universal Transverse Mercator</gridsysn>
<utm>
<utmzone>16</utmzone>
<transmer>
<sfctrmer>.9996</sfctrmer>
<longcm>-87</longcm>
<latprjo>0</latprjo>
<feast>500000</feast>
<fnorth>0</fnorth>
</transmer>
</utm>
</gridsys>
<planci>
<plance>Coordinate Pair</plance>
<coordrep>
<absres>.61</absres>
<ordres>.61</ordres>
</coordrep>
<plandu>Meters</plandu>
</planci>
</planar>
<geodetic>
<horizdn>North American Datum of 1927</horizdn>
<ellips>Clarke 1866</ellips>
<semiaxis>6378206.4</semiaxis>
<denflat>249.98</denflat>
</geodetic>
</horizsys>
</spref>
<eainfo>
<detailed>
<enttyp>
<enttypl>Submerged aquatic vegetation (SAV)</enttypl>
<enttypd>Aquatic vegetation, rooted, found up to 6 meters of water</enttypd>
<enttypds>
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
</enttypds>
</enttyp>
<attr>
<attrlabl>Sub_aq_veg</attrlabl>
<attrdef>Submerged aquatic vegetation as a percentage of ground cover</attrdef>
<attrdefs>C-CAP Coastal Land Cover Classification System</attrdefs>
<attrdomv>
<edom>
<edomv>CSG</edomv>
<edomvd>Continuous seagrass, 90% or more ground cover</edomvd>
<edomvds>C-CAP Coastal Land Cover Classification System</edomvds>
</edom>
</attrdomv>
<attrdomv>
<edom>
<edomv>PSG1</edomv>
<edomvd>Patchy seagrass, 10% or less ground cover</edomvd>
<edomvds>C-CAP Coastal Land Cover Classification System</edomvds>
</edom>
</attrdomv>
<attrdomv>
<edom>
<edomv>PSG2</edomv>
<edomvd>Patchy seagrass, 15% to 40% ground cover</edomvd>
<edomvds>C-CAP Coastal Land Cover Classification System</edomvds>
</edom>
</attrdomv>
<attrdomv>
<edom></edom>
</attrdomv>
</attr>
</detailed>
<edomv>
Enumerated_Domain_Value_Definition  Patchy seagrass, 45% to 70% ground cover
Enumerated_Domain_Value_Definition_Source  C-CAP Coastal Land Cover Classification System
</edomv>
<attrdomv>
<edom>
<edomv>PSG4</edomv>
<edomvd>Patchy seagrass, 75% to 85% ground cover</edomvd>
<edomvds>C-CAP Coastal Land Cover Classification System</edomvds>
</edom>
</attrdomv>
<attrdomv>
<edom>
<edomv>EST</edomv>
<edomvd>
Estuarine, open water or any non-seagrass estuarine
habitat
</edomvd>
<edomvds>C-CAP Coastal Land Cover Classification System</edomvds>
</edom>
</attrdomv>
<attrdomv>
<edom>
<edomv>RIV</edomv>
<edomvd>Riverine, open water (fresh open water)</edomvd>
<edomvds>C-CAP Coastal Land Cover Classification System</edomvds>
</edom>
</attrdomv>
<attrdomv>
<edom>
<edomv>ALG</edomv>
<edomvd>
Algae, delineated only when its presence has been verified
by groundtruthing
</edomvd>
<edomvds>C-CAP Coastal Land Cover Classification System</edomvds>
</edom>
</attrdomv>
<attrdomv>
<edom>
<edomv>LAND</edomv>
<edomvd>
Shoreline, tidal or non-tidal, developed/urban, or
irregularly flooded beach or bare ground.
</edomvd>
<edomvds>C-CAP Coastal Land Cover Classification System</edomvds>
</edom>
</attrdomv>
<attrdomv>
<edom>
<edomv>MOL</edomv>
<edomvd>
Mollusk, oyster reef or beds, delineated only when its
presence has been verified by groundtruthing.
</edomvd>
<edomvds>C-CAP Coastal Land Cover Classification System</edomvds>
</edom>
</attrdomv>
</eainfo>
<distinfo>
<distrib>
<cntinfo>
<cntorgp>
<cntorg>U.S. Geological Survey, National Wetlands Research Center</cntorg>
<cntper>Larry Handley</cntper>
</cntorgp>
<cntpos>Geographer and Principle Investigator</cntpos>
<cntaddr>
<addrtype>Mailing and Physical Address</addrtype>
<address>700 Cajundome Blvd.</address>
<city>Lafayette</city>
<state>Louisiana</state>
<postal>70506</postal>
<country>USA</country>
</cntaddr>
<cntvoice>337 266-8691</cntvoice>
<cntfax>337 266-8513</cntfax>
<cntemail>larry_handley@usgs.gov</cntemail>
<hours>8:00 a.m. to 4:00 p.m. Monday Through Friday</hours>
</cntinfo>
</distrib>
<resdesc>Mississippi Sound, Mississippi - 1992 Submerged Aquatic Vegetation</resdesc>
<distliab>
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 &quot;as is&quot; 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&apos;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.
</distliab>
<stdorder>
<digform>
<digtinfo>
<formname>ARCE</formname>
<formvern>7.1.1</formvern>
<filedec>ARC/INFO e00 Compression Format</filedec>
</digtinfo>
<digtopt>
<onlinopt>
<computer>
<networka>
<networkr>http://sdms.nwrc.gov</networkr>
</networka>
</computer>
</onlinopt>
</digtopt>
</digform>
<fees>None, if data are available online.</fees>
</stdorder>
<custom>None</custom>
</distinfo>
<metainfo>
<metd>19981028</metd>
<metrd>20011030</metrd>
<metc>
<cntinfo>
<cntorgp>
<cntorg>U.S. Geological Survey, National Wetlands Research Center</cntorg>
</cntorgp>
<cntpos>Metadata specialist</cntpos>
<cntaddr>
<addrtype>Mailing and Physical Address</addrtype>
<address>700 Cajundome Blvd.</address>
<city>Lafayette</city>
<state>LA</state>
<postal>70506</postal>
<country>USA</country>
</cntaddr>
<cntvoice>337 266-8500</cntvoice>
<cntfax>337 266-8513</cntfax>
</cntinfo>
</metc>
<metstdn>Content Standard for Digital Geospatial Metadata</metstdn>
<metstdv>FGDC-STD-001-1998</metstdv>
<metac>None</metac>
<metuc>
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.
</metuc>
</metainfo>
</metadata>