Metadata: Identification_Information: Citation: Citation_Information: Originator: Kimberly K. Yates Originator: Stephanie R. Arsenault Originator: Zachery W. Fehr Originator: Kelly A. Murphy Publication_Date: 20210430 Title: Seafloor elevation change from the 1930s to 2016 along the Florida Reef Tract, USA Edition: first Geospatial_Data_Presentation_Form: vector, tabular, and raster digital data Larger_Work_Citation: Citation_Information: Originator: Kimberly K. Yates Originator: Stephanie R. Arsenault Originator: Zachery W. Fehr Originator: Kelly A. Murphy Publication_Date: 20210331 Title: Seafloor elevation change from the 1930s to 2016 along the Florida Reef Tract, USA Geospatial_Data_Presentation_Form: Publication Series_Information: Series_Name: U.S. Geological Survey data release Issue_Identification: doi:10.5066/P9NXNX61 Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P9NXNX61 Description: Abstract: The U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center conducted research to quantify bathymetric changes along the Florida Reef Tract (FRT) from Miami to Key West within a 982.4 square-kilometer area. USGS staff calculated changes in seafloor elevation from the 1930’s to 2016 using digitized historical hydrographic surveys (H-sheets) acquired by the U.S. Coast and Geodetic Survey (USC&GS) in the 1930’s and light detection and ranging (lidar)-derived digital elevation models (DEMs) acquired by the National Oceanic and Atmospheric Administration (NOAA) in 2016 and 2017. Most of the elevation data from the 2016/2017 time period were collected during 2016, so as an abbreviated naming convention, we refer to this time frame as 2016. An elevation change analysis between the 1930’s and 2016 data was performed to quantify and map impacts to seafloor elevation and to determine elevation and volume change statistics for 14 habitat types found within the study area along the FRT. Data were collected under Florida Keys National Marine Sanctuary permit FKNMS-2016-068. Purpose: These data were used to help provide a comprehensive assessment of the combined effect of all processes influencing seafloor accretion and erosion by measuring changes in seafloor elevation and volume for 14 habitat types found within the FRT over the last several decades. Supplemental_Information: The lidar data were collected by the National Geodetic Survey (NGS) Remote Sensing Division as part of NOAA's Coastal Mapping Program (CMP) using a Riegl VQ-820-G system. Historical bathymetry sounding data were collected by the USC&GS. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1934 Ending_Date: 2017 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -81.958437 East_Bounding_Coordinate: -80.086515 North_Bounding_Coordinate: 25.799166 South_Bounding_Coordinate: 24.442791 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:5900fe27-580e-49fb-ae35-225450057869 Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: marine geology Theme_Keyword: sea-floor characteristics Theme_Keyword: sea-level change Theme_Keyword: reef ecosystems Theme_Keyword: coelenterates Theme_Keyword: lidar Theme_Keyword: digital elevation models Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme_Keyword: elevation Theme_Keyword: oceans Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: seafloor elevation Theme_Keyword: sea level rise Theme_Keyword: seafloor accretion Theme_Keyword: seafloor erosion Theme_Keyword: elevation change Theme_Keyword: altimetry Theme_Keyword: submerged topography Theme: Theme_Keyword_Thesaurus: Global Change Master Science Directory Theme_Keyword: OCEAN > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH Theme_Keyword: OCEAN > COASTAL PROCESSES > COASTAL ELEVATION Theme_Keyword: OCEAN > COASTAL PROCESSES > CORAL REEFS Theme_Keyword: OCEAN > COASTAL PROCESSES > EROSION Theme_Keyword: OCEAN > COASTAL PROCESSES > SEA LEVEL RISE Theme_Keyword: DOI/USGS/CMG > COASTAL AND MARINE GEOLOGY, U.S. GEOLOGICAL SURVEY, U.S. DEPARTMENT OF INTERIOR Theme: Theme_Keyword_Thesaurus: GCMD Instrument Theme_Keyword: LIDAR > LIGHT DETECTION AND RANGING Place: Place_Keyword_Thesaurus: Geographic Names Information System Place_Keyword: Florida Place_Keyword: Florida Keys Place: Place_Keyword_Thesaurus: None Place_Keyword: Florida Reef Tract Place_Keyword: Florida Keys National Marine Sanctuary Stratum: Stratum_Keyword_Thesaurus: None Stratum_Keyword: submerged Stratum_Keyword: seafloor Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: 1934-2017 Access_Constraints: None Use_Constraints: Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. The U.S. Geological Survey requests to be acknowledged as originator of these data in future products or derivative research. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Kimberly K. Yates Contact_Organization: Southeast Region: ST. PETE COASTAL & MARINE SCIENCE CENTER Contact_Position: Research Oceanographer Contact_Address: Address_Type: mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: US Contact_Voice_Telephone: 727-502-8059 Contact_Electronic_Mail_Address: kyates@usgs.gov Security_Information: Security_Classification_System: Unclassified Security_Classification: Unclassified Security_Handling_Description: None Native_Data_Set_Environment: Microsoft Windows 7 Enterprise Service Pack 1; Microsoft Excel 2013; Esri ArcGIS Desktop Advanced version 10.6 Cross_Reference: Citation_Information: Originator: Kimberly K. Yates Originator: David G. Zawada Originator: Nathan A. Smiley Originator: Ginger Tiling-Range Publication_Date: 20170420 Title: Divergence of seafloor elevation and sea level rise in coral reef ecosystems Publication_Information: Publication_Place: Munich, Germany Publisher: Biogeosciences Online_Linkage: https://doi.org/10.5194/bg-14-1739-2017 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: A detailed accuracy assessment and error analysis are presented in Yates and others (2017). Logical_Consistency_Report: Data cover the area specified for this project without any known issues. Completeness_Report: Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record and Yates and others (2017) carefully for additional details. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Lidar data positions were obtained using post-processed kinematic global positioning system (KGPS) methods. The horizontal accuracy of the data is better than plus or minus 1.0 meter (m); Quantitative Value: 1.0 m. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Lidar data positions were obtained using post- processed KGPS methods. Data used to validate the lidar were collected with static GPS observational equipment and compared against the published data. The vertical accuracy of the data is better than plus or minus 0.15 m; Quantitative Value: 0.15 m. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Geodetic Survey (NGS), Remote Sensing Division Publication_Date: 20170614 Title: 2016 NOAA NGS Topobathy Lidar: Florida Keys Outer Reef Block 01 Geospatial_Data_Presentation_Form: DEM Publication_Information: Publication_Place: Charleston, SC Publisher: National Oceanic and Atmospheric Administration Online_Linkage: https://inport.nmfs.noaa.gov/inport/item/48175 Type_of_Source_Media: Topobathy data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20160721 Ending_Date: 20161121 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Block 01 Source_Contribution: The original Block 01 lidar data used to generate the merged DEM. Source_Information: Source_Citation: Citation_Information: Originator: National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Geodetic Survey (NGS), Remote Sensing Division Publication_Date: 20170614 Title: 2016 NOAA NGS Topobathy Lidar: Florida Keys Outer Reef Block 02 Geospatial_Data_Presentation_Form: DEM Publication_Information: Publication_Place: Charleston, SC Publisher: National Oceanic and Atmospheric Administration Online_Linkage: https://inport.nmfs.noaa.gov/inport/item/48176 Type_of_Source_Media: Topobathy data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20160721 Ending_Date: 20161121 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Block 02 Source_Contribution: The original Block 02 lidar data used to generate the merged DEM. Source_Information: Source_Citation: Citation_Information: Originator: National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Geodetic Survey (NGS), Remote Sensing Division Publication_Date: 20170712 Title: 2016 NOAA NGS Topobathy Lidar: Florida Keys Outer Reef Block 03 Geospatial_Data_Presentation_Form: DEM Publication_Information: Publication_Place: Charleston, SC Publisher: National Oceanic and Atmospheric Administration Online_Linkage: https://inport.nmfs.noaa.gov/inport/item/48177 Type_of_Source_Media: Topobathy data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20160721 Ending_Date: 20161121 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Block 03 Source_Contribution: The original Block 03 lidar data used to generate the merged DEM. Source_Information: Source_Citation: Citation_Information: Originator: National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Geodetic Survey (NGS), Remote Sensing Division Publication_Date: 20171027 Title: 2017 NOAA NGS Topobathy Lidar: Florida Keys Outer Reef, Block 04 Geospatial_Data_Presentation_Form: DEM Publication_Information: Publication_Place: Charleston, SC Publisher: National Oceanic and Atmospheric Administration Online_Linkage: https://inport.nmfs.noaa.gov/inport/item/48180 Type_of_Source_Media: Topobathy data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20170216 Ending_Date: 20170220 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Block 04 Source_Contribution: The original Block 04 lidar data used to generate the merged DEM. Source_Information: Source_Citation: Citation_Information: Originator: Florida Fish and Wildlife Conservation Commission (FWC), Fish and Wildlife Research Institute (FWRI) Publication_Date: 20170113 Title: Unified Florida Reef Tract Map Version 2.0 Geospatial_Data_Presentation_Form: Vector digital data Publication_Information: Publication_Place: St. Petersburg, FL Publisher: Fish and Wildlife Research Institute Online_Linkage: http://ocean.floridamarine.org/IntegratedReefMap/UnifiedReefTract.htm Type_of_Source_Media: Vector digital data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19910101 Ending_Date: 20130101 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: UFRT Habitat Map Source_Contribution: This shapefile was used to divide the DEMs by habitat types using the Unified Classification (UC) Class Level 2. Process_Step: Process_Description: Step 1: Acquisition and preparation of digital elevation model (DEM) data and elevation- and volume-change analyses was performed using Yates and others (2017) methods. Process_Date: 2020 Process_Step: Process_Description: Step 2: The original 2016 DEMs were acquired from NOAA’s Digital Coast website (https://coast.noaa.gov/digitalcoast/) using the Data Access Viewer (DAV) tool. The elevation search option was used to download four topobathymetric datasets: 2016 NOAA NGS Topobathy Lidar: Florida Keys Outer Reef Blocks 01, 02, 03, and 2017 NOAA NGS Topobathy Lidar: Florida Keys Outer Reef Block 04. The DAV was used to generate a custom DEM from the point cloud data. The four DEMs were created and downloaded in September 2017 and correspond to the North American Datum of 1983 (NAD83) National Spatial Reference System (NSRS2007) horizontal datum, and North American Vertical Datum of 1988 (NAVD88) GEOID12B vertical datum. The data were downloaded from the DAV with the following specifications; Projection: UTM, Zone: Zone 17 Range 084W-078W, Horizontal Datum: NAD83, Horizontal Units: Meters, Vertical Datum: NAVD88, Vertical Units: Meters, File Format: TIFF 32-bit Float, Bin Method: TIN, Bin Size: 1.0, Bin Units: Meters, Data Classification: Bathymetric Lidar Points, Data Returns: Any Points, Ancillary Data: No Ancillary Data and Geoid Name: GEOID12B. Process_Date: 2020 Process_Step: Process_Description: Step 3: The original DEMs were visually inspected and suspect data characterized by coarse interpolation relative to surrounding areas were removed using the methods of Yates and others (2017). Polygons encompassing removed data for each block are provided in Yates and others (2021), see 2016_Lidar_RemovedAreas.zip. The DEMs were opened in ascending order starting with the Block01 DEM TIFF and ending with the Block04 DEM TIFF to prioritize the most recent DEM where there was overlapping data. Using Esri ArcGIS Desktop Advanced version 10.6 (ArcMap), the four edited DEMs were merged together. The merged DEM was created using the "Mosaic to New Raster" tool with the following parameters: Pixel Type: 32_BIT_FLOAT; Number of Bands: 1; and Mosaic Operator: LAST, creating the FRT_Merged_LidarDEM TIFF. Process_Date: 2020 Process_Step: Process_Description: Step 4: A footprint of the merged DEM was created using the "Reclassify (Spatial Analyst)" tool to convert all old values to 1 and leaving 'No Data' values as 'No Data'. Then, the output raster was converted into a polygon SHP file using the "Raster to Polygon (Conversion)" tool, creating the FRT_Merged_LidarDEM_Footprint SHP file. Process_Date: 2020 Process_Step: Process_Description: Step 5: The original digitized H-sheet XYZ files were downloaded from the NOAA Bathymetric Data Viewer (https://www.ngdc.noaa.gov/maps/bathymetry/#). Using VDatum version 3.9, a publicly available software from NOAA (https://vdatum.noaa.gov/), the H-sheet’s vertical datum was transformed from mean lower low water (MLLW) to NAVD88 (GEOID12B), and the horizontal datum was transformed from geographic NAD83 (1986) to UTM Zone 17N NAD83 (NSRS2007). The H-sheet data were also converted from soundings in meters (m) to height (m). For more information on downloading, prepping, and using the H-sheet data, see Yates and others (2017). Process_Date: 2020 Process_Step: Process_Description: Step 6: The output XYZ files from VDatum were converted to comma-separated values (CSV) files and displayed as XY data. Each H-sheet CSV was opened in ArcMap and Add Data > Add XY Data was selected from the File menu. Then, in the Add XY Data window, an H-sheet XYZ file was selected, and LON, LAT, and DEPTH were used for the X, Y, and Z fields, respectively, creating a point SHP file. This process was repeated for each H-sheet, creating a total of 12 individual point SHP files. Then, the individual point SHP files were merged together using the "Merge (Data Management)" tool, creating the FRT_HistoricalPoints SHP file. For more information on prepping and using the H-sheet data, see Yates and others (2017). Process_Date: 2020 Process_Step: Process_Description: Step 7: The FRT_HistoricalPoints SHP file depth values were corrected for sea level rise by applying relative sea level rise (RSLR) estimates collected by NOAA at the Key West and Vaca Key, Florida tide stations. The RSLR correction was calculated by adding a field to the attribute table of the FRT_HistoricalPoints SHP file using the Field Calculator and the expression RSLR_2016 = DEPTH - ((2016 - [year]) * 0.00302), where 0.00302 is the mean annual rate of sea level rise computed from the tide stations. For additional information on applying the sea level rise correction, see Yates and others (2017). Process_Date: 2020 Process_Step: Process_Description: Step 8: The historical points SHP file was clipped to the extent of the merged DEM using the "Clip (Analysis)" tool by specifying the FRT_HistoricalPoints SHP file as the 'Input Features' and the FRT_Merged_LidarDEM_Footprint SHP file as the 'Clip Features', creating the FRT_HistoricalPoints_Clip SHP file. Process_Date: 2020 Process_Step: Process_Description: Step 9: Values from the merged DEM were extracted at the location of the historical points using the "Extract Values to Points (Spatial Analyst)" tool by specifying the FRT_HistoricalPoints_Clip SHP file as the 'Input Point Features' and the FRT_Merged_LidarDEM TIFF as the 'Input Raster', creating the FRT_IntersectPoints SHP file. The elevation difference (Diff_m) between the H-sheets and modern lidar data were calculated by adding a field to the attribute table of the FRT_IntersectPoints SHP file using the Field Calculator and the expression Diff_m = RASTERVALU (lidar) – RSLR_2016 (H-sheets). Process_Date: 2020 Process_Step: Process_Description: Step 10: The original Unified Florida Reef Tract Map version 2.0 SHP file was downloaded from http://ocean.floridamarine.org/IntegratedReefMap/UnifiedReefTract.htm. Using ArcMap, the original habitat SHP file was modified using the "Clip (Analysis)" tool to clip the habitat SHP file to the extent of the merged DEM by specifying the habitat SHP file as the 'Input Features' and the FRT_Merged_LidarDEM_Footprint SHP file as the 'Clip Features', creating the FRT_HabitatClip SHP file. Using the "Select by Attribute" tool, 14 individual habitat SHP files were created from the FRT_HabitatClip SHP file by selecting one ClassLv2 habitat and exporting it as a separate SHP file. Process_Date: 2020 Process_Step: Process_Description: Step 11: Elevation change statistics were determined by habitat type using the XYZ points from the FRT_IntersectPoints SHP file. The "Select Layer by Location (Data Management)" tool was used to extract points within or on the boundary of a specific habitat type by using the following parameters: Input Feature Layer: FRT_IntersectPoints; Relationship: INTERSECT; Selecting Features: Habitat SHP file; Search Distance: left blank; and Selection type: NEW_SELECTION. An ArcMap model was created to automate the process, since these steps had to be repeated for 14 habitat types. Elevation change statistics were compiled by habitat type into a CSV file using Microsoft Excel 2016, see FRT_Elevation_Statistics.csv. Process_Date: 2020 Process_Step: Process_Description: Step 12: An elevation change surface model was created using the "Create TIN (3D Analyst)" tool by specifying the FRT_IntersectPoints SHP file as the 'Input Feature Class', Diff_m as the 'Height Field' and Mass_Points as the 'Type', creating the Intersect_TIN file. Then, the Intersect_TIN file was delineated using the "Delineate TIN Data Areas (3D Analyst)" tool by specifying the Intersect_TIN as the 'Input TIN', a 'Maximum Edge Length' of 400 m (Yates and others, 2017) and the 'Method' set to ALL. A polygon footprint of the delineated TIN was created using the "TIN Domain (3D Analyst)" tool by specifying the Intersect_TIN file as the 'Input TIN' and the 'Output Feature Class Type' as POLYGON, creating the Intersect_TINDomain SHP file. A polygon representing the intersection of the Intersect_TIN file and merged DEM was generated using the "Clip (Analysis)" tool by specifying the Intersect_TINDomain SHP file as the 'Input Features' and the FRT_Merged_LidarDEM_Footprint SHP file as the 'Clip Features', creating the FRT_TINDomainIntersect SHP file. Then, the Intersect_TIN file was clipped to the extent of the intersect footprint SHP file using the "Edit TIN (3D Analyst)" tool with the following parameters: Input TIN: Intersect_TIN; Input Features Class: FRT_TINDomainIntersect SHP file; Height Field: None; and Type: Hard clip, creating the final TIN file. Process_Date: 2020 Process_Step: Process_Description: Step 13: Volume-change statistics per habitat type were calculated using the final TIN file. Surface volume changes were calculated for four cases using the "Surface Volume (3D Analyst)" tool. To calculate the net erosion lower limit (case 1) the 'Reference Plane' was set to BELOW and the 'Plane Height' set to -0.5 m. For the net erosion upper limit (case 2) the 'Reference Plane' was set to BELOW and the 'Plane Height' set to 0 m. For the net accretion lower limit (case 3) the 'Reference Plane' was set to ABOVE and the 'Plane Height' was set to 0.5 m. For the net accretion upper limit (case 4) the 'Reference Plane' was set to ABOVE and the 'Plane Height' was set to 0 m. A 0.5 m threshold was determined by vertical error analysis using the uncertainties reported in the metadata of the original lidar (0.15 m) and the H-sheet (0.23 m) products to calculate the Root Mean Square Error (RMSE) of 0.29 m. The RMSE of 0.29 was multiplied by 1.56 to compute a RMSE of 0.47 m to include 90% of the variance. This value was rounded to 0.5 to produce the final RMSE used as a threshold in this study (Yates and others, 2017). Minimum net volume was calculated by summing results from cases 1 and 3. Maximum net volume was calculated by summing results from cases 2 and 4. Area normalized volume change lower limit was calculated by dividing the minimum net volume change for each habitat by the habitat's total area. The area normalized volume change upper limit was calculated by diving the maximum net volume for each habitat by the habitat's total area. An ArcMap model was created to automate the process, since these steps had to be repeated for 14 habitat types. Volume change statistics were compiled by habitat type in CSV format using Excel, see FRT_Volume_Statistics.csv. Process_Date: 2020 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Entity Point Point_and_Vector_Object_Count: 85253 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 17 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -81.0 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000.0 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.6096 Ordinate_Resolution: 0.6096 Planar_Distance_Units: METERS Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 (NAD83) National Spatial Reference System of 2007 (NSRS2007) Ellipsoid_Name: GRS_1980 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257222 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Datum_Name: North American Vertical Datum of 1988 (NAVD88) GEOID12B Altitude_Resolution: 0.2 Altitude_Distance_Units: meters Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: FRT_Elevation_Statistics.csv Entity_Type_Definition: FRT elevation change statistics per habitat type from the 1930s to 2016. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: Habitat types in FRT study site Attribute_Definition: Habitat types found in the FRT study site. Habitat types are defined by the Unified Florida Reef Tract Map Version 2.0 and based on the Unified Classification (UC) system Class Level 2. Attribute_Definition_Source: Florida Fish and Wildlife Conservation Commission (FWC) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Total study site Enumerated_Domain_Value_Definition: The total FRT study site, includes 14 habitat types. Enumerated_Domain_Value_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Aggregate reef Enumerated_Domain_Value_Definition: Aggregate reef larger than 1 hectare (ha), contiguous reef, lacking sand channels. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Colonized pavement Enumerated_Domain_Value_Definition: Contiguous to patchy pavement, lacking spur and groove channel formation, presence of macroalgae, hard coral, gorgonians, and other sessile invertebrates, dense enough to obscure underlying rock. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Individual or aggregated patch reef Enumerated_Domain_Value_Definition: Patch reefs smaller than 1 ha, isolated reefs often with distinct halo or reef features covering >10% of the area. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Not classified Enumerated_Domain_Value_Definition: Areas where habitat has not been classified. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Pavement Enumerated_Domain_Value_Definition: Contiguous to patchy pavement, lacking spur and groove channel formations. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Pavement with sand channels Enumerated_Domain_Value_Definition: Alternating linear sand and pavement formations, perpendicular to reef crest. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Pavement with seagrass Enumerated_Domain_Value_Definition: Contiguous to patchy pavement, lacking spur and groove channel formations with seagrass. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Reef rubble Enumerated_Domain_Value_Definition: Unconsolidated, dead, unstable coral rubble. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Reef rubble with seagrass Enumerated_Domain_Value_Definition: Unconsolidated, dead, unstable coral rubble with seagrass. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Scattered coral or rock in unconsolidated sediment Enumerated_Domain_Value_Definition: Mostly sand, reef features covering <10% of the area. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Seagrass continuous Enumerated_Domain_Value_Definition: Continuous seagrass beds. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Seagrass discontinuous Enumerated_Domain_Value_Definition: Discontinuous seagrass beds. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Spur and groove Enumerated_Domain_Value_Definition: Alternating linear sand and coral formations, perpendicular to reef crest. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Unconsolidated sediment Enumerated_Domain_Value_Definition: Unconsolidated sediment Enumerated_Domain_Value_Definition_Source: FWC Attribute: Attribute_Label: Total points (no.) Attribute_Definition: The total number of points within or on the boundary of each habitat type in the FRT study site. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 23 Range_Domain_Maximum: 85253 Attribute_Units_of_Measure: number of points Attribute: Attribute_Label: Mean elevation change (m) Attribute_Definition: Mean elevation change per habitat type in the FRT study site from the 1930s to 2016, in meters. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.324863964 Range_Domain_Maximum: 0.585162233 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Mean elevation change SD (m) Attribute_Definition: Standard deviation of the mean elevation change, in meters. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.4757955 Range_Domain_Maximum: 1.27224372 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Accretion points (no.) Attribute_Definition: The total number of accretion points within or on the boundary of each habitat type in the FRT study site. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 11 Range_Domain_Maximum: 38604 Attribute_Units_of_Measure: number of points Attribute: Attribute_Label: Max accretion (m) Attribute_Definition: Maximum accretion per habitat type in the FRT study site from the 1930s to 2016, in meters. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.616750229 Range_Domain_Maximum: 9.630930458 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Mean accretion (m) Attribute_Definition: Mean accretion per habitat type in the FRT study site from the 1930s to 2016, in meters. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.260037329 Range_Domain_Maximum: 1.08481207 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Mean accretion SD (m) Attribute_Definition: Standard deviation of the mean accretion, in meters. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.202767579 Range_Domain_Maximum: 1.13718145 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Erosion points (no.) Attribute_Definition: The total number of erosion points within or on the boundary of each habitat type in the FRT study site. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 12 Range_Domain_Maximum: 46649 Attribute_Units_of_Measure: number of points Attribute: Attribute_Label: Max erosion (m) Attribute_Definition: Maximum erosion per habitat type in the FRT study site from the 1930s to 2016, in meters. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -11.46108947 Range_Domain_Maximum: -1.663760172 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Mean erosion (m) Attribute_Definition: Mean erosion per habitat type in the FRT study site from the 1930s to 2016, in meters. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.78085174 Range_Domain_Maximum: -0.364493978 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Mean erosion SD (m) Attribute_Definition: Standard deviation of the mean erosion, in meters. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.350798955 Range_Domain_Maximum: 0.868641217 Attribute_Units_of_Measure: meters Detailed_Description: Entity_Type: Entity_Type_Label: FRT_Volume_Statistics.csv Entity_Type_Definition: FRT volume change statistics per habitat type from the 1930s to 2016. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: Habitat types in FRT study site Attribute_Definition: Habitat types found in the FRT study site. Habitat types are defined by the Unified Florida Reef Tract Map Version 2.0 and based on the Unified Classification (UC) system Class Level 2. Attribute_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Total study site Enumerated_Domain_Value_Definition: The total FRT study site, includes 14 habitat types. Enumerated_Domain_Value_Definition_Source: USGS Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Aggregate reef Enumerated_Domain_Value_Definition: Aggregate reef larger than 1 hectare (ha), contiguous reef, lacking sand channels. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Colonized pavement Enumerated_Domain_Value_Definition: Contiguous to patchy pavement, lacking spur and groove channel formation, presence of macroalgae, hard coral, gorgonians, and other sessile invertebrates, dense enough to obscure underlying rock. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Individual or aggregated patch reef Enumerated_Domain_Value_Definition: Patch reefs smaller than 1 ha, isolated reefs often with distinct halo or reef features covering >10% of the area. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Not classified Enumerated_Domain_Value_Definition: Areas where habitat has not been classified. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Pavement Enumerated_Domain_Value_Definition: Contiguous to patchy pavement, lacking spur and groove channel formations. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Pavement with sand channels Enumerated_Domain_Value_Definition: Alternating linear sand and pavement formations, perpendicular to reef crest. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Pavement with seagrass Enumerated_Domain_Value_Definition: Contiguous to patchy pavement, lacking spur and groove channel formations with seagrass. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Reef rubble Enumerated_Domain_Value_Definition: Unconsolidated, dead, unstable coral rubble. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Reef rubble with seagrass Enumerated_Domain_Value_Definition: Unconsolidated, dead, unstable coral rubble with seagrass. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Scattered coral or rock in unconsolidated sediment Enumerated_Domain_Value_Definition: Mostly sand, reef features covering <10% of the area. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Seagrass continuous Enumerated_Domain_Value_Definition: Continuous seagrass beds. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Seagrass discontinuous Enumerated_Domain_Value_Definition: Discontinuous seagrass beds. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Spur and groove Enumerated_Domain_Value_Definition: Alternating linear sand and coral formations, perpendicular to reef crest. Enumerated_Domain_Value_Definition_Source: FWC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Unconsolidated sediment Enumerated_Domain_Value_Definition: Unconsolidated sediment Enumerated_Domain_Value_Definition_Source: FWC Attribute: Attribute_Label: Habitat area (km^2) Attribute_Definition: Habitat area, in kilometers squared. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.127432307 Range_Domain_Maximum: 789.10074 Attribute_Units_of_Measure: km^2 Attribute: Attribute_Label: Net erosion lower limit (10^6 m^3) Attribute_Definition: Net erosion minimum volume per habitat type, in millions of cubic meters. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.004347398 Range_Domain_Maximum: 28.42484245 Attribute_Units_of_Measure: 10^6 m^3 Attribute: Attribute_Label: Net erosion upper limit (10^6 m^3) Attribute_Definition: Net erosion maximum volume per habitat type, in millions of cubic meters. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.018169211 Range_Domain_Maximum: 134.778192 Attribute_Units_of_Measure: 10^6 m^3 Attribute: Attribute_Label: Net accretion lower limit (10^6 m^3) Attribute_Definition: Net accretion minimum volume per habitat type, in millions of cubic meters. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.000918714 Range_Domain_Maximum: 24.49636225 Attribute_Units_of_Measure: 10^6 m^3 Attribute: Attribute_Label: Net accretion upper limit (10^6 m^3) Attribute_Definition: Net accretion maximum volume per habitat type, in millions of cubic meters. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.020734218 Range_Domain_Maximum: 106.8693794 Attribute_Units_of_Measure: 10^6 m^3 Attribute: Attribute_Label: Net volume change lower limit (10^6 m^3 study area^-1) Attribute_Definition: Net volume change lower limit per habitat type, in millions of cubic meters per study area. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -4.869266047 Range_Domain_Maximum: 3.025876355 Attribute_Units_of_Measure: 10^6 m^3 study area^-1 Attribute: Attribute_Label: Net volume change upper limit (10^6 m^3 study area^-1) Attribute_Definition: Net volume change upper limit per habitat type, in millions of cubic meters per study area. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -27.90881261 Range_Domain_Maximum: 5.121670724 Attribute_Units_of_Measure: 10^6 m^3 study area^-1 Attribute: Attribute_Label: Area normalized volume change lower limit (10^6 m^3 km^-2) Attribute_Definition: Area normalized volume change lower limit per habitat type, in millions of cubic meters per kilometer squared. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.083378609 Range_Domain_Maximum: 0.288806891 Attribute_Units_of_Measure: 10^6 m^3 km^-2 Attribute: Attribute_Label: Area normalized volume change upper limit (10^6 m^3 km^-2) Attribute_Definition: Area normalized volume change upper limit per habitat type, in millions of cubic meters per kilometer squared. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.227249671 Range_Domain_Maximum: 0.488841454 Attribute_Units_of_Measure: 10^6 m^3 km^-2 Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Kimberly K. Yates Contact_Organization: Southeast Region: ST. PETE COASTAL & MARINE SCIENCE CENTER Contact_Position: Research Oceanographer Contact_Address: Address_Type: mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: US Contact_Voice_Telephone: 727-502-8059 Contact_Electronic_Mail_Address: kyates@usgs.gov Distribution_Liability: Although these data have been processed successfully on a computer system at the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display 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. The USGS shall not be held liable for improper or incorrect use of the data described or contained herein. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: shapefile, comma-delimited text, GeoTIFF Format_Version_Number: ArcGIS 10.6, RFC 4180 Format_Specification: Esri point and polygon shapefiles, comma-separated values, tagged image file format Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P9NXNX61/data/FRT_MergedLidar.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P9NXNX61/data/FRT_HabitatClip.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P9NXNX61/data/FRT_IntersectPoints.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P9NXNX61/data/FRT_Elevation_and_Volume_Statistics.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P9NXNX61/data/2016_Lidar_RemovedAreas.zip Fees: None Metadata_Reference_Information: Metadata_Date: 20210330 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Kimberly K. Yates Contact_Organization: Southeast Region: ST. PETE COASTAL & MARINE SCIENCE CENTER Contact_Position: Research Oceanographer Contact_Address: Address_Type: mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: US Contact_Voice_Telephone: 727-502-8059 Contact_Electronic_Mail_Address: kyates@usgs.gov Hours_of_Service: M-F, 9:00-5:00 ET Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time