47893
Benthic Habitats of Florida Bay, FL 1991-1995 Substrate
fl_fb95-substrate_Metadata
Data Set
Published / External
37225
Benthic
Project
Completed
2015
In the winter of 1991/92 the National Oceanic and Atmospheric Administration's Office for Coastal Management's Coastal Change Analysis Program (C-CAP) and the State of Florida commissioned the National Ocean Service's Photogrammetry Unit, the National Geodetic Survey (NGS), to acquire conventional color metric aerial photography of Florida Bay suitable for interpretation of photic benthic habitats (scale of 1:48,000). Additional photography was acquired by NGS in 1995 to cover areas of the bay that were not interpretable due to turbidity and glare during the original mission. The imagery was collected according to stringent parameters detailed in the C-CAP protocol (https://coast.noaa.gov/crs/lca/ccap.html). The original photographic diapositives were interpreted by two ecologists, familiar with the local environment. The benthic signatures were interpreted from the photography using Bausch and Lomb Zoom Stereoscopes and Richards Light Tables. The boundaries of each unique signature were delineated on acetate overlays and assigned one of 20 habitat classes. Only the central 'sweet spot' of each frame was interpreted to minimize the effects of sun glint. An ecologist at the Florida Marine Research Institute (FMRI) conducted thematic quality assurance and control. Following interpretation, Office for Coastal Management staff scanned the aerial photos, with the interpreted acetate overlays attached, using a photogrammetric quality scanner (AGFA Horizon Plus) at a resolution of 600 dpi resulting in a pixel resolution of 2.03 meters. The resulting image file was rectified (second order bilinear interpolation) using ERDAS Imagine software. Ground control points were selected from features common to digital orthophotoquads of Florida Bay. The interpreted polygon habitats were digitized into an ARC coverage from the rectified files using ERDAS Imagine software's vector module. In 1999, the final edits and quality control of the habitat polygons were completed. The coverage and shoreline were edge matched to the Benthic Habitats of the Florida Keys Atlas to complete the coverage, as the dates of photography, methodology and classification system used were the same.
Original contact information:
Contact Org: NOAA Office for Coastal Management
Phone: 843-740-1202
Email: coastal.info@noaa.gov
Loss of seagrass beds, persistent phytoplankton blooms, and elevated turbidity are symptoms of major ecological changes in Florida Bay. These changes threaten important fisheries associated with Florida Bay and the adjacent Florida Keys. Marine and estuarine seagrass beds are vital linkages in the ecosystem of Florida Bay and are essential for the maintenance of healthy fish populations. These beds cycle nutrients and stabilize the sediments as well as provide direct benefits to fisheries in the form of food and shelter. In addition, seagrass beds are connected to other ecologically and economically valuable systems, such as mangrove, coral reef and continental shelf communities. Quantification of the status and recent change in the spatial distribution of seagrass is central to understanding the distribution and extent of these declines and to guide research and management efforts.
10050
Theme
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > BENTHIC
Theme
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > COASTAL
Theme
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > ESTUARY
Theme
ISO 19115 Topic Category
environment
Spatial
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > FLORIDA
Theme
CMECS
Theme
Coastal and Marine Ecological Classification Standard
Theme
Environmental Monitoring
Theme
Florida Bay
Theme
OCM Benthic Habitat Mapping
Theme
Substrate Component
Theme
benthic habitats
Theme
corals
Theme
field verification
Theme
image rectification
Theme
photo-interpretation
Theme
seagrass
Theme
submerged aquatic vegetation
Spatial
Florida
Office for Coastal Management
Charleston
SC
Data Set
As Needed
Map (digital)
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.
49293
Substrate
Substrate
Published / External
Completed
Shallow benthic habitats CMECS 2012 substrate component polygons | Description Source: NOAA Office for Coastal Management
Converted from FGDC using 'fgdc_to_inport_xml_entity.pl' script.
1
OBJECTID
Unknown
No
No
Active
Internal feature number. | Description Source: Esri
Sequential unique whole numbers that are automatically generated.
2
Shape_Area
Unknown
No
No
Active
Polygon area in square meters | Description Source: Esri
Area
3
CMECS_CODE
Unknown
No
No
Active
CMECS substrate unit code. | Description Source: Coastal and Marine Ecological Classification Standard, FGDC 2012
Alphanumeric code for CMECS units
4
S_ORIGIN
VARCHAR
No
No
Active
Substrate Origin - Dominance (percent cover) of either the geologic, biogenic (but no longer living), or anthropogenic origin of the upper layer of substrate | Description Source: 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 |
5
S_CLASS
VARCHAR
No
No
Active
Substrate Class - Composition and particle size of the dominant substrate material in the surface sediments. | Description Source: 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 |
6
S_SUBCLASS
VARCHAR
No
No
Active
Substrate Subclass - Composition and particle size of the dominant substrate material in the surface sediments. | Description Source: 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 |
7
S_GROUP
VARCHAR
No
No
Active
Substrate Group - Determined by Folk (1954) mixes for Geologic Sediments and by taxa for the Biogenic Substrates | Description Source: 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 |
8
S_SUBGROUP
VARCHAR
No
No
Active
Substrate Subgroup - Determined by Folk (1954) mixes for Geologic Sediments and by taxa for the Biogenic Substrates | Description Source: 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 |
9
SHAPE
Unknown
No
No
Active
Feature geometry. | Description Source: Esri
Coordinates defining the features.
10
Shape_Length
Unknown
No
No
Active
Length of line features in meters | Description Source: Esri
Distance
11
Description
Unknown
No
No
Active
Descriptive information on substrate units | Description Source: FMRI/NOAA Office for Coastal Management
Free text further describing substrate units
Data Steward
2015
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Distributor
2015
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Metadata Contact
2015
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Point of Contact
2015
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Ground Condition
-81.1428
-80.3419
25.2733
24.6853
Range
1991
1995
Yes
Yes
1549
Unclassified
Contact NOAA Office for Coastal Management's Clearinghouse Manager and request a copy of "Benthic Habitats of Florida Bay, Florida, 1991-1995, CD-ROM". Alternatively, fill out a OCM Product Request Form at https://coast.noaa.gov/clearinghouse/prodreq_form.html;
none
None
ftp://ftp.coast.noaa.gov/pub/benthic/Benthic_Cover_Data/FL_FloridaBay.zip
Bulk Download
FTP download of data files.
https://coast.noaa.gov/data/Images/Collections/BenthicCover_thumbnail.jpg
Browse Graphic
Browse Graphic
JPEG
Sample of benthic cover data
http://www.cmecscatalog.org/
CMECS Catalog
Online Resource
Searchable online catalog of CMECS units, descriptions, and source references
https://coast.noaa.gov/
NOAA's Office for Coastal Management (OCM) website
Online Resource
Information on the NOAA Office for Coastal Management (OCM)
https://coast.noaa.gov/digitalcoast/
NOAA's Office for Coastal Management (OCM) Digital Coast Data section
Online Resource
The website provides not only coastal data, but also the tools, training, and information needed to make these data truly useful. Content comes from many sources, all of which are vetted by NOAA.
https://iocm.noaa.gov/cmecs
CMECS Home Page
Online Resource
Information and resources on the CMECS standard and how to apply it
2017-03-30
Date that the source FGDC record was last modified.
2017-11-14
Converted from FGDC Content Standard for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details.
2018-02-08
Partial upload of Positional Accuracy fields only.
2018-04-11
Partial upload to move data access FTP links to Distribution Info and remove broken URLs.
Florida Bay Accuracy: The digitized benthic habitats of Florida Bay data have undergone two accuracy evaluations. Cartographers performed the first accuracy evaluation after the data were compiled. As each digital data files was compiled, a hard copy was generated and visually compared to the original source classified photography. Geographers performed the second evaluation while the data were transformed into geographic information systems. As each digital data were incorporated into the GIS, topology was constructed and corrected as needed. Also, hard copy maps were prepared and cross checked with original data. The keys edge of the bay was edge matched with the Benthic Habitats of Florida Keys Atlas to complete the coverage and incorporate a shoreline. The dates of photography, methodology and classification system used for both projects were equivalent.
8 meters overall
N/A
Images on the western-most edge were not rectifiable due to lack of features. Thus the boundaries along the western edge are not spatially registered.
Unknown
Conventional color metric aerial photographic diapositives (1:48,000) flown by NGS 1991,1992 and 1995 of Florida Bay, Florida
Florida Fish and Wildlife Conservation Commission Florida Marine Research InstituteDepartment of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM)
1999-11-19
Range
1991
1995
48000
Unknown | Source Geospatial Form: map | Type of Source Media: Conventional color metric aerial photographic diapositives
1
Benthic Habitats: National Oceanic and Atmospheric Administration's National Geodetic Survey (NGS) staff conducted the aerial photographic mission. Contracted ecologists and Florida Marine Research Institute staff developed the classification scheme. The ecologists and FMRI staff participated in ground-truthing, classification, and review of the benthic classifications. National Oceanic and Atmospheric Administration's Office for Coastal Management Coastal Change Analysis Program staff made digital compilations of the photographic information and created digital map layers in a Geographic Information System (GIS).Aerial Photography: True color aerial photographs of Florida Bay were acquired by National Oceanic and Atmospheric Administration's Remote Sensing Division during overflights occurring from December 1991 through March 1992. Due to glare and turbidity in certain areas, additional photography was acquired during 1995. A Wild RC-30 camera mounted in a Cessna Citation II Fanjet aircraft was used to acquire the 1:48,000 (1 cm =480 m) source photography. Each photograph covered approximately 160 km2. An 80 percent endlap and 60 percent sidelap between adjacent photographs ensured both complete coverage and the presence of adequate reference locations necessary for determining positional accuracy. Approximately 80 photos provided monoscopic coverage and were used to delineate benthic habitats.Establishing a Habitat Classification Scheme: Two recognized ecologists, both with local knowledge of Florida Bay and extensive expertise in marine habitats, were responsible for interpreting and delineating the benthic communities seen on the aerial photographs. These two ecologists, along with the FMRI staff, developed the hierarchical classification scheme used for this coverage. The habitat classification scheme is composed of 24 benthic communities in four major habitat categories: corals, seagrasses, hardbottom, and bare substrate. Special modifiers were attached to the classes to denote dredge zones, banks, and restoration areas.Photointerpretation: The ecologists and FMRI staff interpreted and then delineated benthic habitats on the aerial photos. The minimum habitat area delineated was 0.5 ha. Ground truthing was conducted to verify that benthic habitats seen in the water were properly identified on aerial photographs. Researchers were able to conduct most ground truthing of benthic communities while snorkeling. Field information about the benthic habitat and site GPS locations were recorded. The completed photos were reviewed for content and accuracy by the ecologists and FMRI staff and then sent to National Oceanic and Atmospheric Administration for digital compilation.Digital Compilation of Aerial Photographs: National Oceanic and Atmospheric Administration's Office for Coastal Management Coastal Change Analysis Program staff inspected each photograph for completeness of delineations, photograph discrepancies, and areas of turbidity. The aerial photographs, with the interpreted acetates attached, were scanned using a photogrammetric quality scanner (AGFA Horizon Plus) at a resolution of 600 dpi resulting in a pixel resolution of 2.03 meters. The resulting image field was rectified interpolation bilinear (second order) by Coastal Change Analysis Program using ground control points drawn from 1 meter color digital orthophotos of Florida Bay. The southern edge of Florida Bay dataset was edge matched to the Benthic Habitats of the Florida Keys Atlas. The rectification and digitization was completed utilizing the ERDAS Imagine software package.Quality Control: A review of the data was conducted in two phases: 1) an on-line review to ensure line and attribute completeness, comparison to the ecologists' delineations, and positional accuracy; and 2) a review of 1:48,000 scale maps of the compiled data against the original source photos.
2
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.
2015-01-01T00:00:00
49293
Entity
Substrate
gov.noaa.nmfs.inport:47893
Anne Ball
2017-11-14T12:57:28
SysAdmin InPortAdmin
2023-05-30T18:09:28
2018-04-11
Office for Coastal Management
OCM
1002
Public
No
2018-04-11
1 Year
2019-04-11