PK e_KH$Gb b , CMECS Benthic Cover/nc90-biotic_Metadata.xml
Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM)
NOAA/SEFSC/Beaufort Lab
2015
North Carolina Seagrass Submersed Rooted Vasculars 1990 Biotic
1
Map
Charleston, SC
NOAA Office for Coastal Management (OCM)
ftp://ftp.coast.noaa.gov/pub/benthic/Benthic_Cover_Data/NC_Coast.zip
https://coast.noaa.gov/digitalcoast/publications/cmecs
http://www.cmecscatalog.org/
https://coast.noaa.gov/digitalcoast/
https://coast.noaa.gov/
A GIS data set of polygon data interpreted from aerial photography taken by NOAA/NOS Photogrammetry Branch depicting areas of Aquatic Beds of Rooted Vascular Plants in coastal north Carolina. Predominantly submersed rooted vasculars (SRV) but including some floating rooted vasculars (FRV). The nomenclature and definitions originally developed according to the Coastal Land Cover Classification System for the NOAA Coastal Change Analysis Project (C-CAP), Journal of Coastal Research 9(3):862-872 have been crosswalked into the Florida System For Classification of Habitats in Estuarine and Marine Environments (SCHEME) to build consistency with similar NOAA developed benthic data sets.
To improve the understanding of coastal photic submersed lands and their linkages with wetlands and uplands, and with living marine organisms. To assist government agencies and others in making resource management decisions through the use of GIS.
Photointerpretation with a Wild AVIOPRET stereoscope. Photographs and data were compiled on a Bausch and Lomb stereo zoom transfer scope at a scale of 1:24,000 on USGS 7.5' topographic maps or on NOAA shoreline topographic sheets scaled to 1:24,000 (original scale 1:20,000). Data is a merge of several coverages dependent on map base, photo mission, and photographic scale.
1985
1990
ground condition
As needed
-77.0865
-75.4635
36.6545
34.6025
ISO 19115 Topic Category
environment
None
Submersed Aquatic Vegetation
SAV
Aquatic Bed
Rooted Vascular
Marine Rooted Vascular
Estuarine Rooted Vascular
Seagrass
SAV
Eelgrass
Shoalgrass
Widgeon Grass
Zostera Marina
Halodule Wrightii
Ruppia Maritima
Wild Celery
Vallisneria Americana
Eurasian Water Milfoil
Myriophyllum Spicatum
Bushy Pondweed
Najas Guadalupensis
Redhead Grass
Potamogeton Perfoliatus
Sago Pondweed
Potamogeton Pectinatus
Leafy Pondweed
Potamogeton Foliosus
Horned Pondweed
Zannichellia Palustris
Underwater Vegetation
Living Marine Resources
None
CMECS
Coastal and Marine Ecological Classification Standard
Biotic Component
None
North Carolina
Eastern North Carolina
Coastal North Carolina
Back Sound
Core Sound
Albemarle Sound
Pamlico Sound Currituck Sound Neuse River
Neuse River Estuary
Pamlico River
Pamlico River Estuary
Pungo River
Alligator River
Newport River
Perquimans River
Pasquotank River
Cape Lookout
Cape Hatteras
Beaufort Inlet
Barden Inlet
Drum Inlet
Ocracoke Inlet
Hatteras inlet
Oregon Inlet
USA
None
None
NOAA Office for Coastal Management
mailing and physical
2234 South Hobson Avenue
Charleston
SC
29405-2413
843-740-1202
coastal.info@noaa.gov
https://coast.noaa.gov/data/Images/Collections/BenthicCover_thumbnail.jpg
Sample of benthic cover data
JPEG
Attribute accuracy for habitat polygons has not been
conducted. Field checks of all benthic signatures present
in the photographs were conducted to resolve those benthic
features that potentially could be confused with submersed
rooted vegetation. The number and locations of site visits
were based on judgment of the photointerpreter who led the
field verification phase of the surface level sampling. In
a second type of surface level work, a grid randomly placed
on a nautical chart determined the nominal latitude and
longitude of stations. These were sampled for species of
submersed rooted vegetation and ancillary environmental
information. The methodology was inappropriate for accuracy
assessment of the remotely based habitat data for three
reasons. 1) Any plants within a quarter mile radius of the
stations coordinates were sampled and indicated as positive
in the field database. Rare occurrences of small clusters of
plants would not be mapped from the photographs due to the
minimum mapping unit. 2) Navigation to stations was
accomplished with LORAN C which was spatially much less
accurate than was expected with the photographic approach.
Reference data must be a more reliable source than the data
to be evaluated. 3) Some nominal station locations were
unexpectedly deep or unsafe to approach or sample and were
arbitrarily moved to an adjacent more appropriate location.
This could have biased the spatial sampling.
The classification scheme comprehensively includes all
subtidal bottom classified for the presence or absence of
submersed rooted vegetation. Void areas exceeding minimum
mapping unit were mapped within vegetation polygons and are
delineated and labeled. Overlay of the compiled and
digitized polygons of vegetation included a few instances
of overlap with dry land on the map base. This was
particularly true for data compiled on 7.5' map bases due
to the time differential between the photographic dates for
the map bases (typically 1940s for shorelines and 1970's or
1980's for cultural features) and the aquatic bed
photography (1985 to 1990) The shoreline moved in some
cases. Logical consistency in terms of topology for
vegetation polygons was confirmed in ARC/INFO and test plots
of the digitized data at the compilation scale (1:24,000)
were compared for consistency and similarity of
cartographic style with the source maps and were edited if necessary.
The classification scheme includes one class at the Class
level and one at the Subclass 1 level within the SCHEME
system. All SRV within the study area were delineated,
unless flagged in the data set, to a depth of approximately
10 feet mean lower low water (MLLW), deeper than aquatic
beds are known to grown in the study area. Limited parts of
the study area were not successfully photographed and
therefore data for those locations are omitted from the
coverage. The photography provides a record of only a
single time period so that ephemeral beds not present at
the time of photography are omitted. This may be the case
for some Zostera marina beds, for example, which can sprout
from seed in the late spring and die due to heat stress and
exposure in the summer. Zostera marina is a perennial grass
which over winters as rhizomes within the substrate.
Horizontal positional accuracy has not been established for the data set. National Map Accuracy standards (at a
compilation scale of 1:24,000) are assumed as the
theoretical optimal accuracy of this data. Accuracy is
limited by the accuracy and temporal coincidence of base
map and interpretation of the aquatic bed data from
photographs. In the case of USGS 7.5' topographic maps, the cultural information is more contemporary (up to 10 or 15
years out of date) than the geographic information (up to
45 years out of date). NOAA shoreline and cultural data
(based on 1988 and 1991 photography) are within six years
of the aquatic bed photography. The dearth of cultural
information throughout most of the study area resulted in a dependency on geographic features for local horizontal
control of the photographic data. The aquatic bed
photographs were more consistent with contemporary NOAA
shoreline topographic map bases (from 1988 and 1991)
photography and use of these map bases presumably
increased overall accuracy of the vegetation map. Aerial
photography is registered by local horizontal control to
base maps in a zoom transfer scope. Reference features are readily identifiable and can be accurately positioned on
the photograph and on the base map. Cultural feature are
preferred and geographic features are used if necessary. The base maps are USGS 7.5' topographic series or NOAA shoreline topographic sheets.
The SRV data carries no vertical attributes and no
assessment or measure of vertical accuracy was conducted.
NOAA/NOS/C&CS/ Photogrammetry Branch
1990
NOS Aerial Photograph Archive
map
Silver Spring, MD
NOAA
24000
Film diapositives
1985
1990
Ground Condition
NOAA/NMFS
Source photography for SAV interpretation
Acquisition of metric aerial photography. Conventional color aerial photography was collected in several missions between 1985 and 1990 following the protocols described in NOAA Technical Report NMFS 123. Both film diapositives and paper prints were used for the interpretation.
1990
NOAA/NOS/C&CS/Photogrammetry Branch
mailing and physical address
1315 East-West Highway
Silver Spring
Maryland
20910
USA
None
8:00 - 17:00 Eastern Time
Compilation of Photographic Information. Aerial photos were interpreted and habitats delineated on acetate overlays
affixed to the film. Field information was used to guide this mapping process. The interpreted photo delineations were then
transferred to hard-copy base maps using a zoom-transfer scope to fit the polygons to a planimetric base.
1990
Lisa Wood
NOAA/NMFS/SEFSC/Beaufort Lab
Photogrammetrist
mailing and physical address
101 Pivers Island Rd.
Beaufort
North Carolina
28516
USA
252-728-8742
252-728-8784
lisa.wood@noaa.gov
8:00 - 17:00 Eastern Time
Digitization of Compiled Photographic Interpretations.
1:24,000 scale bases were supplied to CGIA by the
NOAA/NMFS/SEFSC/Beaufort Lab. These were used to digitize
the delineated areas of SRV. All digital files were later
compiled into one digital GIS data set. Checkplots were
created for review by the Beaufort Lab and any corrections made.
Unknown
Ken Shaffer
North Carolina Center for Geographic Information and Analysis
Senior GIS analyst
mailing and physical address
301 North Wilmington Street, Suite 700
Raleigh
North Carolina
27601
USA
Unknown
Unknown
Unknown
8:30 - 17:30 Eastern Time
The data were converted from a single ESRI polygon shapefile classified according to the System for Classifying Habitats in Estuarine and Marine Environments (SCHEME) to the Coastal and Marine Ecological Classification Standard (CMECS) 2012 format (which can be found at https://coast.noaa.gov/digitalcoast/tools/cmecs-crosswalk) which produces separate geoform, biotic, and biotic feature layers from the original input benthic habitat dataset. This biotic feature layer contains CMECS biotic component attributes where an "Equal" or "Nearly Equal" SCHEME value was present in the original data. Polygons for which no biotic information was present have been removed. No other changes to the original polygon boundaries or any other alterations of the original SCHEME data were made during this process.
2015
Vector
GT-polygon composed of chains
1272
Universal Transverse Mercator
18
0.999600
-75.000000
0.000000
500000.000000
0.000000
coordinate pair
0.0000001
0.0000001
Meters
North American Datum of 1983
Geodetic Reference System 80
6378137
298.257
Biotic
Shallow benthic habitats CMECS 2012 biotic component polygons
NOAA Office for Coastal Management
OBJECTID
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
SHAPE
Feature geometry.
Esri
Coordinates defining the features.
CMECS_CODE
CMECS biotic unit code.
Coastal and Marine Ecological Classification Standard, FGDC 2012
Alphanumeric code for CMECS units
B_SETTING
Biotic Setting - Indication of whether the biota are attached or closely associated with the benthos or are suspended or floating in the water column.
Coastal and Marine Ecological Classification Standard, FGDC 2012
See list of biotic setting units; CMECS FGDC 2012
See definitions of biotic setting units; CMECS FGDC 2012
CMECS FGDC 2012
B_CLASS
Biotic Class - Dominant (percent cover) taxonomy and life forms of the living components of the sampled area at a fairly coarse level.
Coastal and Marine Ecological Classification Standard, FGDC 2012
See list of biotic class units; CMECS FGDC 2012
See definitions of biotic class units; CMECS FGDC 2012
CMECS FGDC 2012
B_SUBCLASS
Biotic Subclass - Dominant (percent cover) taxonomy and life forms of the living components of the sampled area at a fairly coarse level
Coastal and Marine Ecological Classification Standard, FGDC 2012
See list of biotic subclass units; CMECS FGDC 2012
See definitions of biotic subclass units; CMECS FGDC 2012
CMECS FGDC 2012
B_GROUP
Biotic Group - Functional groupings of characteristic biological types based on finer distinctions of taxonomy, structure, position, environment, and salinity levels
Coastal and Marine Ecological Classification Standard, FGDC 2012
See list of biotic group units; CMECS FGDC 2012
See definitions of biotic group units; CMECS FGDC 2012
CMECS FGDC 2012
B_COMMUNITY
Biotic Community - repeatable, characteristic assemblages of organisms that are relatively uniform in structure, species composition, and habitat conditions
Coastal and Marine Ecological Classification Standard, FGDC 2012
See list of biotic community units; CMECS FGDC 2012
See definitions of biotic community units; CMECS FGDC 2012
CMECS FGDC 2012
Shape_Length
Length of line features in meters
Esri
Distance
Shape_Area
Polygon area in square meters
Esri
Area
NOAA Office for Coastal Management
mailing and physical
2234 South Hobson Avenue
Charleston
SC
29405-2413
843-740-1202
coastal.info@noaa.gov
This data was generated by the NOAA Beaufort Lab as a pilot
methods development project for the NOAA NMFS Coastal
Change Analysis Program. The benthic component of the
program is now managed and implemented by the NOAA NOS
Office for Coastal Management. Recoding of the original
classification attributes into the SCHEME system has been
conducted in order to bring consistency to benthic data
generated by the program. The
original data compiled in the North Carolina State Plane
coordinate system, zone 3200 with a North American Datum of
1983 has been reprojected into a Universal Transverse
Mercator projection, zone 18 to allow other benthic data to
be integrated on a regional basis.
NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
20160211
20160211
NOAA Office for Coastal Management
mailing and physical
2234 South Hobson Avenue
Charleston
SC
29405-2413
843-740-1202
coastal.info@noaa.gov
FGDC CSDGM
FGDC-STD-001-1998
PK `KH\ڀ$ $ 1 CMECS Benthic Cover/nc90-geodatabase_Metadata.xml
Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM)
NOAA/SEFSC/Beaufort Lab
2015
North Carolina Seagrass Submersed Rooted Vasculars 1990 Geodatabase
1
Map
Charleston, SC
NOAA Office for Coastal Management (OCM)
ftp://ftp.coast.noaa.gov/pub/benthic/Benthic_Cover_Data/NC_Coast.zip
https://coast.noaa.gov/digitalcoast/publications/cmecs
http://www.cmecscatalog.org/
https://coast.noaa.gov/digitalcoast/
https://coast.noaa.gov/
A GIS data set of polygon data interpreted from aerial photography taken by NOAA/NOS Photogrammetry Branch depicting areas of Aquatic Beds of Rooted Vascular Plants in coastal north Carolina. Predominantly submersed rooted vasculars (SRV) but including some floating rooted vasculars (FRV). The nomenclature and definitions originally developed according to the Coastal Land Cover Classification System for the NOAA Coastal Change Analysis Project (C-CAP), Journal of Coastal Research 9(3):862-872 have been crosswalked into the Florida System For Classification of Habitats in Estuarine and Marine Environments (SCHEME) to build consistency with similar NOAA developed benthic data sets.
To improve the understanding of coastal photic submersed lands and their linkages with wetlands and uplands, and with living marine organisms. To assist government agencies and others in making resource management decisions through the use of GIS.
Photointerpretation with a Wild AVIOPRET stereoscope. Photographs and data were compiled on a Bausch and Lomb stereo zoom transfer scope at a scale of 1:24,000 on USGS 7.5' topographic maps or on NOAA shoreline topographic sheets scaled to 1:24,000 (original scale 1:20,000). Data is a merge of several coverages dependent on map base, photo mission, and photographic scale.
This file geodatabase contains three feature layers corresponding to the CMECS 2012 Geoform, Substrate, and Biotic components. These layers were converted from an earlier version classified according to the System for Classifying Habitats in Estuarine and Marine Environments (SCHEME) using the CMECS Crosswalk Tool. Each feature layer has its own metadata record describing the attributes, and data development methods associated with it.
1985
1990
ground condition
As needed
-77.0865
-75.4635
36.6545
34.6025
ISO 19115 Topic Category
environment
None
Submersed Aquatic Vegetation
SAV
Aquatic Bed
Rooted Vascular
Marine Rooted Vascular
Estuarine Rooted Vascular
Seagrass
SAV
Eelgrass
Shoalgrass
Widgeon Grass
Zostera Marina
Halodule Wrightii
Ruppia Maritima
Wild Celery
Vallisneria Americana
Eurasian Water Milfoil
Myriophyllum Spicatum
Bushy Pondweed
Najas Guadalupensis
Redhead Grass
Potamogeton Perfoliatus
Sago Pondweed
Potamogeton Pectinatus
Leafy Pondweed
Potamogeton Foliosus
Horned Pondweed
Zannichellia Palustris
Underwater Vegetation
Living Marine Resources
None
CMECS
Coastal and Marine Ecological Classification Standard
Geoform Component
Biotic Component
Substrate Component
None
North Carolina
Eastern North Carolina
Coastal North Carolina
Back Sound
Core Sound
Albemarle Sound
Pamlico Sound Currituck Sound Neuse River
Neuse River Estuary
Pamlico River
Pamlico River Estuary
Pungo River
Alligator River
Newport River
Perquimans River
Pasquotank River
Cape Lookout
Cape Hatteras
Beaufort Inlet
Barden Inlet
Drum Inlet
Ocracoke Inlet
Hatteras inlet
Oregon Inlet
USA
None
None
NOAA Office for Coastal Management
mailing and physical
2234 South Hobson Avenue
Charleston
SC
29405-2413
843-740-1202
coastal.info@noaa.gov
https://coast.noaa.gov/data/Images/Collections/BenthicCover_thumbnail.jpg
Sample of benthic cover data
JPEG
NOAA Office for Coastal Management
mailing and physical
2234 South Hobson Avenue
Charleston
SC
29405-2413
843-740-1202
coastal.info@noaa.gov
This data was generated by the NOAA Beaufort Lab as a pilot
methods development project for the NOAA NMFS Coastal
Change Analysis Program. The benthic component of the
program is now managed and implemented by the NOAA NOS
Office for Coastal Management. Recoding of the original
classification attributes into the SCHEME system has been
conducted in order to bring consistency to benthic data
generated by the program. The
original data compiled in the North Carolina State Plane
coordinate system, zone 3200 with a North American Datum of
1983 has been reprojected into a Universal Transverse
Mercator projection, zone 18 to allow other benthic data to
be integrated on a regional basis.
NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
20160211
20160211
NOAA Office for Coastal Management
mailing and physical
2234 South Hobson Avenue
Charleston
SC
29405-2413
843-740-1202
coastal.info@noaa.gov
FGDC CSDGM
FGDC-STD-001-1998
PK f`KH}SZ` ` - CMECS Benthic Cover/nc90-geoform_Metadata.xml
Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM)
NOAA/SEFSC/Beaufort Lab
2015
North Carolina Seagrass Submersed Rooted Vasculars 1990 Geoform
1
Map
Charleston, SC
NOAA Office for Coastal Management (OCM)
ftp://ftp.coast.noaa.gov/pub/benthic/Benthic_Cover_Data/NC_Coast.zip
https://coast.noaa.gov/digitalcoast/publications/cmecs
http://www.cmecscatalog.org/
https://coast.noaa.gov/digitalcoast/
https://coast.noaa.gov/
A GIS data set of polygon data interpreted from aerial photography taken by NOAA/NOS Photogrammetry Branch depicting areas of Aquatic Beds of Rooted Vascular Plants in coastal north Carolina. Predominantly submersed rooted vasculars (SRV) but including some floating rooted vasculars (FRV). The nomenclature and definitions originally developed according to the Coastal Land Cover Classification System for the NOAA Coastal Change Analysis Project (C-CAP), Journal of Coastal Research 9(3):862-872 have been crosswalked into the Florida System For Classification of Habitats in Estuarine and Marine Environments (SCHEME) to build consistency with similar NOAA developed benthic data sets.
To improve the understanding of coastal photic submersed lands and their linkages with wetlands and uplands, and with living marine organisms. To assist government agencies and others in making resource management decisions through the use of GIS.
Photointerpretation with a Wild AVIOPRET stereoscope. Photographs and data were compiled on a Bausch and Lomb stereo zoom transfer scope at a scale of 1:24,000 on USGS 7.5' topographic maps or on NOAA shoreline topographic sheets scaled to 1:24,000 (original scale 1:20,000). Data is a merge of several coverages dependent on map base, photo mission, and photographic scale.
1985
1990
ground condition
As needed
-77.0865
-75.4635
36.6545
34.6025
ISO 19115 Topic Category
environment
None
Submersed Aquatic Vegetation
SAV
Aquatic Bed
Rooted Vascular
Marine Rooted Vascular
Estuarine Rooted Vascular
Seagrass
SAV
Eelgrass
Shoalgrass
Widgeon Grass
Zostera Marina
Halodule Wrightii
Ruppia Maritima
Wild Celery
Vallisneria Americana
Eurasian Water Milfoil
Myriophyllum Spicatum
Bushy Pondweed
Najas Guadalupensis
Redhead Grass
Potamogeton Perfoliatus
Sago Pondweed
Potamogeton Pectinatus
Leafy Pondweed
Potamogeton Foliosus
Horned Pondweed
Zannichellia Palustris
Underwater Vegetation
Living Marine Resources
None
CMECS
Coastal and Marine Ecological Classification Standard
Geoform Component
None
North Carolina
Eastern North Carolina
Coastal North Carolina
Back Sound
Core Sound
Albemarle Sound
Pamlico Sound Currituck Sound Neuse River
Neuse River Estuary
Pamlico River
Pamlico River Estuary
Pungo River
Alligator River
Newport River
Perquimans River
Pasquotank River
Cape Lookout
Cape Hatteras
Beaufort Inlet
Barden Inlet
Drum Inlet
Ocracoke Inlet
Hatteras inlet
Oregon Inlet
USA
None
None
NOAA Office for Coastal Management
mailing and physical
2234 South Hobson Avenue
Charleston
SC
29405-2413
843-740-1202
coastal.info@noaa.gov
https://coast.noaa.gov/data/Images/Collections/BenthicCover_thumbnail.jpg
Sample of benthic cover data
JPEG
Attribute accuracy for habitat polygons has not been
conducted. Field checks of all benthic signatures present
in the photographs were conducted to resolve those benthic
features that potentially could be confused with submersed
rooted vegetation. The number and locations of site visits
were based on judgment of the photointerpreter who led the
field verification phase of the surface level sampling. In
a second type of surface level work, a grid randomly placed
on a nautical chart determined the nominal latitude and
longitude of stations. These were sampled for species of
submersed rooted vegetation and ancillary environmental
information. The methodology was inappropriate for accuracy
assessment of the remotely based habitat data for three
reasons. 1) Any plants within a quarter mile radius of the
stations coordinates were sampled and indicated as positive
in the field database. Rare occurrences of small clusters of
plants would not be mapped from the photographs due to the
minimum mapping unit. 2) Navigation to stations was
accomplished with LORAN C which was spatially much less
accurate than was expected with the photographic approach.
Reference data must be a more reliable source than the data
to be evaluated. 3) Some nominal station locations were
unexpectedly deep or unsafe to approach or sample and were
arbitrarily moved to an adjacent more appropriate location.
This could have biased the spatial sampling.
The classification scheme comprehensively includes all
subtidal bottom classified for the presence or absence of
submersed rooted vegetation. Void areas exceeding minimum
mapping unit were mapped within vegetation polygons and are
delineated and labeled. Overlay of the compiled and
digitized polygons of vegetation included a few instances
of overlap with dry land on the map base. This was
particularly true for data compiled on 7.5' map bases due
to the time differential between the photographic dates for
the map bases (typically 1940s for shorelines and 1970's or
1980's for cultural features) and the aquatic bed
photography (1985 to 1990) The shoreline moved in some
cases. Logical consistency in terms of topology for
vegetation polygons was confirmed in ARC/INFO and test plots
of the digitized data at the compilation scale (1:24,000)
were compared for consistency and similarity of
cartographic style with the source maps and were edited if necessary.
The classification scheme includes one class at the Class
level and one at the Subclass 1 level within the SCHEME
system. All SRV within the study area were delineated,
unless flagged in the data set, to a depth of approximately
10 feet lower mean low water (MLLW), deeper than aquatic
beds are known to grown in the study area. Limited parts of
the study area were not successfully photographed and
therefore data for those locations are omitted from the
coverage. The photography provides a record of only a
single time period so that ephemeral beds not present at
the time of photography are omitted. This may be the case
for some Zostera marina beds, for example, which can sprout
from seed in the late spring and die due to heat stress and
exposure in the summer. Zostera marina is a perennial grass
which over winters as rhizomes within the substrate.
Horizontal positional accuracy has not been established for the data set. National Map Accuracy standards (at a
compilation scale of 1:24,000) are assumed as the
theoretical optimal accuracy of this data. Accuracy is
limited by the accuracy and temporal coincidence of base
map and interpretation of the aquatic bed data from
photographs. In the case of USGS 7.5' topographic maps, the cultural information is more contemporary (up to 10 or 15
years out of date) than the geographic information (up to
45 years out of date). NOAA shoreline and cultural data
(based on 1988 and 1991 photography) are within six years
of the aquatic bed photography. The dearth of cultural
information throughout most of the study area resulted in a dependency on geographic features for local horizontal
control of the photographic data. The aquatic bed
photographs were more consistent with contemporary NOAA
shoreline topographic map bases (from 1988 and 1991)
photography and use of these map bases presumably
increased overall accuracy of the vegetation map. Aerial
photography is registered by local horizontal control to
base maps in a zoom transfer scope. Reference features are readily identifiable and can be accurately positioned on
the photograph and on the base map. Cultural feature are
preferred and geographic features are used if necessary. The base maps are USGS 7.5' topographic series or NOAA shoreline topographic sheets.
The SRV data carries no vertical attributes and no
assessment or measure of vertical accuracy was conducted.
NOAA/NOS/C&CS/ Photogrammetry Branch
1990
NOS Aerial Photograph Archive
map
Silver Spring, MD
NOAA
24000
Film diapositives
1985
1990
Ground Condition
NOAA/NMFS
Source photography for SAV interpretation
Acquisition of metric aerial photography. Conventional color aerial photography was collected in several missions between 1985 and 1990 following the protocols described in NOAA Technical Report NMFS 123. Both film diapositives and paper prints were used for the interpretation.
1990
NOAA/NOS/C&CS/Photogrammetry Branch
mailing and physical address
1315 East-West Highway
Silver Spring
Maryland
20910
USA
None
8:00 - 17:00 Eastern Time
Compilation of Photographic Information. Aerial photos were interpreted and habitats delineated on acetate overlays
affixed to the film. Field information was used to guide this mapping process. The interpreted photo delineations were then
transferred to hard-copy base maps using a zoom-transfer scope to fit the polygons to a planimetric base.
1990
Lisa Wood
NOAA/NMFS/SEFSC/Beaufort Lab
Photogrammetrist
mailing and physical address
101 Pivers Island Rd.
Beaufort
North Carolina
28516
USA
252-728-8742
252-728-8784
lisa.wood@noaa.gov
8:00 - 17:00 Eastern Time
Digitization of Compiled Photographic Interpretations.
1:24,000 scale bases were supplied to CGIA by the
NOAA/NMFS/SEFSC/Beaufort Lab. These were used to digitize
the delineated areas of SRV. All digital files were later
compiled into one digital GIS data set. Checkplots were
created for review by the Beaufort Lab and any corrections made.
Unknown
Ken Shaffer
North Carolina Center for Geographic Information and Analysis
Senior GIS analyst
mailing and physical address
301 North Wilmington Street, Suite 700
Raleigh
North Carolina
27601
USA
Unknown
Unknown
Unknown
8:30 - 17:30 Eastern Time
The data were converted from a single ESRI polygon shapefile classified according to the System for Classifying Habitats in Estuarine and Marine Environments (SCHEME) to the Coastal and Marine Ecological Classification Standard (CMECS) 2012 format (which can be found at https://coast.noaa.gov/digitalcoast/tools/cmecs-crosswalk) which produces separate geoform, geoform, and geoform feature layers from the original input benthic habitat dataset. This geoform feature layer contains CMECS geoform component attributes where an "Equal" or "Nearly Equal" SCHEME value was present in the original data. Polygons for which no geoform information was present have been removed. No other changes to the original polygon boundaries or any other alterations of the original SCHEME data were made during this process.
2015
Vector
GT-polygon composed of chains
86
Universal Transverse Mercator
18
0.999600
-75.000000
0.000000
500000.000000
0.000000
coordinate pair
0.0000001
0.0000001
Meters
North American Datum of 1983
Geodetic Reference System 80
6378137
298.257
Geoform
Shallow benthic habitats CMECS 2012 geoform component polygons
NOAA Office for Coastal Management
OBJECTID
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
SHAPE
Feature geometry.
Esri
Coordinates defining the features.
CMECS_CODE
CMECS biotic unit code.
Coastal and Marine Ecological Classification Standard, FGDC 2012
Alphanumeric code for CMECS units
TECTPROV
Tectonic Setting - Continental scale geomorphological setting of the study area.
Coastal and Marine Ecological Classification Standard, FGDC 2012
See list of geoform tectonic province units; CMECS FGDC 2012
See definitions of geoform setting units; CMECS FGDC 2012
CMECS FGDC 2012
PHYSIOPROV
Physiographic Province as per the CMECS Geoform component.
Coastal and Marine Ecological Classification Standard, FGDC 2012
See list of geoform class units; CMECS FGDC 2012
See definitions of Geoform class units; CMECS FGDC 2012
CMECS FGDC 2012
G_ORIGIN
Primary process by which the geoform was formed as per the Coastal and Marine Ecological Classification Standard, FGDC 2012
Coastal and Marine Ecological Classification Standard, FGDC 2012
See list of geoform origin units; CMECS FGDC 2012
See definitions of geoform origin units; CMECS FGDC 2012
CMECS FGDC 2012
GEOFORM
Geoform - Individual geomorphological and physical features which provide a context for CMECS biotic an substrate information at a variety of spatial scales.
Coastal and Marine Ecological Classification Standard, FGDC 2012
See list of Geoform units; CMECS FGDC 2012
See definitions of Geoform units; CMECS FGDC 2012
CMECS FGDC 2012
GEOFORM_TYPE
More specific variant of geoform.
Coastal and Marine Ecological Classification Standard, FGDC 2012
See list of geoform type units; CMECS FGDC 2012
See definitions of geoform type units; CMECS FGDC 2012
CMECS FGDC 2012
Shape_Length
Length of line features in meters
Esri
Distance
Shape_Area
Polygon area in square meters
Esri
Area
NOAA Office for Coastal Management
mailing and physical
2234 South Hobson Avenue
Charleston
SC
29405-2413
843-740-1202
coastal.info@noaa.gov
This data was generated by the NOAA Beaufort Lab as a pilot
methods development project for the NOAA NMFS Coastal
Change Analysis Program. The benthic component of the
program is now managed and implemented by the NOAA NOS
Office for Coastal Management. Recoding of the original
classification attributes into the SCHEME system has been
conducted in order to bring consistency to benthic data
generated by the program. The
original data compiled in the North Carolina State Plane
coordinate system, zone 3200 with a North American Datum of
1983 has been reprojected into a Universal Transverse
Mercator projection, zone 18 to allow other benthic data to
be integrated on a regional basis.
NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
20160211
20160211
NOAA Office for Coastal Management
mailing and physical
2234 South Hobson Avenue
Charleston
SC
29405-2413
843-740-1202
coastal.info@noaa.gov
FGDC CSDGM
FGDC-STD-001-1998
PK aKH c c / CMECS Benthic Cover/nc90-substrate_Metadata.xml
Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM)
NOAA/SEFSC/Beaufort Lab
2015
North Carolina Seagrass Submersed Rooted Vasculars 1990 Substrate
1
Map
Charleston, SC
NOAA Office for Coastal Management (OCM)
ftp://ftp.coast.noaa.gov/pub/benthic/Benthic_Cover_Data/NC_Coast.zip
https://coast.noaa.gov/digitalcoast/publications/cmecs
http://www.cmecscatalog.org/
https://coast.noaa.gov/digitalcoast/
https://coast.noaa.gov/
A GIS data set of polygon data interpreted from aerial photography taken by NOAA/NOS Photogrammetry Branch depicting areas of Aquatic Beds of Rooted Vascular Plants in coastal north Carolina. Predominantly submersed rooted vasculars (SRV) but including some floating rooted vasculars (FRV). The nomenclature and definitions originally developed according to the Coastal Land Cover Classification System for the NOAA Coastal Change Analysis Project (C-CAP), Journal of Coastal Research 9(3):862-872 have been crosswalked into the Florida System For Classification of Habitats in Estuarine and Marine Environments (SCHEME) to build consistency with similar NOAA developed benthic data sets.
To improve the understanding of coastal photic submersed lands and their linkages with wetlands and uplands, and with living marine organisms. To assist government agencies and others in making resource management decisions through the use of GIS.
Photointerpretation with a Wild AVIOPRET stereoscope. Photographs and data were compiled on a Bausch and Lomb stereo zoom transfer scope at a scale of 1:24,000 on USGS 7.5' topographic maps or on NOAA shoreline topographic sheets scaled to 1:24,000 (original scale 1:20,000). Data is a merge of several coverages dependent on map base, photo mission, and photographic scale.
1985
1990
ground condition
As needed
-77.0865
-75.4635
36.6545
34.6025
ISO 19115 Topic Category
environment
None
Submersed Aquatic Vegetation
SAV
Aquatic Bed
Rooted Vascular
Marine Rooted Vascular
Estuarine Rooted Vascular
Seagrass
SAV
Eelgrass
Shoalgrass
Widgeon Grass
Zostera Marina
Halodule Wrightii
Ruppia Maritima
Wild Celery
Vallisneria Americana
Eurasian Water Milfoil
Myriophyllum Spicatum
Bushy Pondweed
Najas Guadalupensis
Redhead Grass
Potamogeton Perfoliatus
Sago Pondweed
Potamogeton Pectinatus
Leafy Pondweed
Potamogeton Foliosus
Horned Pondweed
Zannichellia Palustris
Underwater Vegetation
Living Marine Resources
None
CMECS
Coastal and Marine Ecological Classification Standard
Substrate Component
None
North Carolina
Eastern North Carolina
Coastal North Carolina
Back Sound
Core Sound
Albemarle Sound
Pamlico Sound Currituck Sound Neuse River
Neuse River Estuary
Pamlico River
Pamlico River Estuary
Pungo River
Alligator River
Newport River
Perquimans River
Pasquotank River
Cape Lookout
Cape Hatteras
Beaufort Inlet
Barden Inlet
Drum Inlet
Ocracoke Inlet
Hatteras inlet
Oregon Inlet
USA
None
None
NOAA Office for Coastal Management
mailing and physical
2234 South Hobson Avenue
Charleston
SC
29405-2413
843-740-1202
coastal.info@noaa.gov
https://coast.noaa.gov/data/Images/Collections/BenthicCover_thumbnail.jpg
Sample of benthic cover data
JPEG
Attribute accuracy for habitat polygons has not been
conducted. Field checks of all benthic signatures present
in the photographs were conducted to resolve those benthic
features that potentially could be confused with submersed
rooted vegetation. The number and locations of site visits
were based on judgment of the photointerpreter who led the
field verification phase of the surface level sampling. In
a second type of surface level work, a grid randomly placed
on a nautical chart determined the nominal latitude and
longitude of stations. These were sampled for species of
submersed rooted vegetation and ancillary environmental
information. The methodology was inappropriate for accuracy
assessment of the remotely based habitat data for three
reasons. 1) Any plants within a quarter mile radius of the
stations coordinates were sampled and indicated as positive
in the field database. Rare occurrences of small clusters of
plants would not be mapped from the photographs due to the
minimum mapping unit. 2) Navigation to stations was
accomplished with LORAN C which was spatially much less
accurate than was expected with the photographic approach.
Reference data must be a more reliable source than the data
to be evaluated. 3) Some nominal station locations were
unexpectedly deep or unsafe to approach or sample and were
arbitrarily moved to an adjacent more appropriate location.
This could have biased the spatial sampling.
The classification scheme comprehensively includes all
subtidal bottom classified for the presence or absence of
submersed rooted vegetation. Void areas exceeding minimum
mapping unit were mapped within vegetation polygons and are
delineated and labeled. Overlay of the compiled and
digitized polygons of vegetation included a few instances
of overlap with dry land on the map base. This was
particularly true for data compiled on 7.5' map bases due
to the time differential between the photographic dates for
the map bases (typically 1940s for shorelines and 1970's or
1980's for cultural features) and the aquatic bed
photography (1985 to 1990) The shoreline moved in some
cases. Logical consistency in terms of topology for
vegetation polygons was confirmed in ARC/INFO and test plots
of the digitized data at the compilation scale (1:24,000)
were compared for consistency and similarity of
cartographic style with the source maps and were edited if necessary.
The classification scheme includes one class at the Class
level and one at the Subclass 1 level within the SCHEME
system. All SRV within the study area were delineated,
unless flagged in the data set, to a depth of approximately
10 feet lower mean low water (MLLW), deeper than aquatic
beds are known to grown in the study area. Limited parts of
the study area were not successfully photographed and
therefore data for those locations are omitted from the
coverage. The photography provides a record of only a
single time period so that ephemeral beds not present at
the time of photography are omitted. This may be the case
for some Zostera marina beds, for example, which can sprout
from seed in the late spring and die due to heat stress and
exposure in the summer. Zostera marina is a perennial grass
which over winters as rhizomes within the substrate.
Horizontal positional accuracy has not been established for the data set. National Map Accuracy standards (at a
compilation scale of 1:24,000) are assumed as the
theoretical optimal accuracy of this data. Accuracy is
limited by the accuracy and temporal coincidence of base
map and interpretation of the aquatic bed data from
photographs. In the case of USGS 7.5' topographic maps, the cultural information is more contemporary (up to 10 or 15
years out of date) than the geographic information (up to
45 years out of date). NOAA shoreline and cultural data
(based on 1988 and 1991 photography) are within six years
of the aquatic bed photography. The dearth of cultural
information throughout most of the study area resulted in a dependency on geographic features for local horizontal
control of the photographic data. The aquatic bed
photographs were more consistent with contemporary NOAA
shoreline topographic map bases (from 1988 and 1991)
photography and use of these map bases presumably
increased overall accuracy of the vegetation map. Aerial
photography is registered by local horizontal control to
base maps in a zoom transfer scope. Reference features are readily identifiable and can be accurately positioned on
the photograph and on the base map. Cultural feature are
preferred and geographic features are used if necessary. The base maps are USGS 7.5' topographic series or NOAA shoreline topographic sheets.
The SRV data carries no vertical attributes and no
assessment or measure of vertical accuracy was conducted.
NOAA/NOS/C&CS/ Photogrammetry Branch
1990
NOS Aerial Photograph Archive
map
Silver Spring, MD
NOAA
24000
Film diapositives
1985
1990
Ground Condition
NOAA/NMFS
Source photography for SAV interpretation
Acquisition of metric aerial photography. Conventional color aerial photography was collected in several missions between 1985 and 1990 following the protocols described in NOAA Technical Report NMFS 123. Both film diapositives and paper prints were used for the interpretation.
1990
NOAA/NOS/C&CS/Photogrammetry Branch
mailing and physical address
1315 East-West Highway
Silver Spring
Maryland
20910
USA
None
8:00 - 17:00 Eastern Time
Compilation of Photographic Information. Aerial photos were interpreted and habitats delineated on acetate overlays
affixed to the film. Field information was used to guide this mapping process. The interpreted photo delineations were then
transferred to hard-copy base maps using a zoom-transfer scope to fit the polygons to a planimetric base.
1990
Lisa Wood
NOAA/NMFS/SEFSC/Beaufort Lab
Photogrammetrist
mailing and physical address
101 Pivers Island Rd.
Beaufort
North Carolina
28516
USA
252-728-8742
252-728-8784
lisa.wood@noaa.gov
8:00 - 17:00 Eastern Time
Digitization of Compiled Photographic Interpretations.
1:24,000 scale bases were supplied to CGIA by the
NOAA/NMFS/SEFSC/Beaufort Lab. These were used to digitize
the delineated areas of SRV. All digital files were later
compiled into one digital GIS data set. Checkplots were
created for review by the Beaufort Lab and any corrections made.
Unknown
Ken Shaffer
North Carolina Center for Geographic Information and Analysis
Senior GIS analyst
mailing and physical address
301 North Wilmington Street, Suite 700
Raleigh
North Carolina
27601
USA
Unknown
Unknown
Unknown
8:30 - 17:30 Eastern Time
The data were converted from a single ESRI polygon shapefile classified according to the System for Classifying Habitats in Estuarine and Marine Environments (SCHEME) to the Coastal and Marine Ecological Classification Standard (CMECS) 2012 format (which can be found at https://coast.noaa.gov/digitalcoast/tools/cmecs-crosswalk) which produces separate geoform, substrate, and substrate feature layers from the original input benthic habitat dataset. This substrate feature layer contains CMECS substrate component attributes where an "Equal" or "Nearly Equal" SCHEME value was present in the original data. Polygons for which no substrate information was present have been removed. No other changes to the original polygon boundaries or any other alterations of the original SCHEME data were made during this process.
2015
Vector
GT-polygon composed of chains
1388
Universal Transverse Mercator
18
0.999600
-75.000000
0.000000
500000.000000
0.000000
coordinate pair
0.0000001
0.0000001
Meters
North American Datum of 1983
Geodetic Reference System 80
6378137
298.257
Substrate
Shallow benthic habitats CMECS 2012 substrate component polygons
NOAA Office for Coastal Management
OBJECTID
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
SHAPE
Feature geometry.
Esri
Coordinates defining the features.
CMECS_CODE
CMECS substrate unit code.
Coastal and Marine Ecological Classification Standard, FGDC 2012
Alphanumeric code for CMECS units
S_ORIGIN
Substrate Origin - Dominance (percent cover) of either the geologic, biogenic (but no longer living), or anthropogenic origin of the upper layer of substrate
Coastal and Marine Ecological Classification Standard, FGDC 2012
See list of substrate origin units; CMECS FGDC 2012
See definitions of substrate origin units; CMECS FGDC 2012
CMECS FGDC 2012
S_CLASS
Substrate Class - Composition and particle size of the dominant substrate material in the surface sediments.
Coastal and Marine Ecological Classification Standard, FGDC 2012
See list of substrate class units; CMECS FGDC 2012
See definitions of substrate class units; CMECS FGDC 2012
CMECS FGDC 2012
S_SUBCLASS
Substrate Subclass - Composition and particle size of the dominant substrate material in the surface sediments.
Coastal and Marine Ecological Classification Standard, FGDC 2012
See list of substrate subclass units; CMECS FGDC 2012
See definitions of substrate subclass units; CMECS FGDC 2012
CMECS FGDC 2012
S_GROUP
Substrate Group - Determined by Folk (1954) mixes for Geologic Sediments and by taxa for the Biogenic Substrates
Coastal and Marine Ecological Classification Standard, FGDC 2012
See list of substrate group units; CMECS FGDC 2012
See definitions of substrate group units; CMECS FGDC 2012
CMECS FGDC 2012
S_SUBGROUP
Substrate Subgroup - Determined by Folk (1954) mixes for Geologic Sediments and by taxa for the Biogenic Substrates
Coastal and Marine Ecological Classification Standard, FGDC 2012
See list of substrate subgroup units; CMECS FGDC 2012
See definitions of substrate subgroup units; CMECS FGDC 2012
CMECS FGDC 2012
Shape_Length
Length of line features in meters
Esri
Distance
Shape_Area
Polygon area in square meters
Esri
Area
Description
Descriptive information on substrate units
NOAA Beaufort Lab/NOAA Office for Coastal Management
Free text further describing substrate units
NOAA Office for Coastal Management
mailing and physical
2234 South Hobson Avenue
Charleston
SC
29405-2413
843-740-1202
coastal.info@noaa.gov
This data was generated by the NOAA Beaufort Lab as a pilot
methods development project for the NOAA NMFS Coastal
Change Analysis Program. The benthic component of the
program is now managed and implemented by the NOAA NOS
Office for Coastal Management. Recoding of the original
classification attributes into the SCHEME system has been
conducted in order to bring consistency to benthic data
generated by the program. The
original data compiled in the North Carolina State Plane
coordinate system, zone 3200 with a North American Datum of
1983 has been reprojected into a Universal Transverse
Mercator projection, zone 18 to allow other benthic data to
be integrated on a regional basis.
NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
20160211
20160211
NOAA Office for Coastal Management
mailing and physical
2234 South Hobson Avenue
Charleston
SC
29405-2413
843-740-1202
coastal.info@noaa.gov
FGDC CSDGM
FGDC-STD-001-1998
PK
TRSI CMECS Benthic Cover/nc90.gdb/PK
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