Metadata: Identification_Information: Citation: Citation_Information: Originator: Kimberly K. Yates Originator: David G. Zawada Originator: Stephanie R. Arsenault Publication_Date: 20201117 Title: Seafloor Elevation Change From 2016 to 2017 at Looe Key, Florida Keys-Impacts From Hurricane Irma (version 2.0) Edition: 2.0 Geospatial_Data_Presentation_Form: Multimedia presentation Series_Information: Series_Name: U.S. Geological Survey Data Release Issue_Identification: doi:10.5066/P937LNZF Publication_Information: Publication_Place: St Petersburg, FL Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P937LNZF Larger_Work_Citation: 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 Geospatial_Data_Presentation_Form: Publication Publication_Information: Publication_Place: Munich, Germany Publisher: Biogeosciences Online_Linkage: https://doi.org/10.5194/bg-14-1739-2017 Description: Abstract: The U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center conducted research to quantify bathymetric changes at Looe Key near Big Pine Key, Florida (FL), within a 19.7 square-kilometer area following Hurricane Irma's landfall in September 2017. USGS staff used light detection and ranging (lidar)-derived data acquired by the National Oceanic and Atmospheric Administration (NOAA) between July 21 and November 21, 2016 and USGS multibeam data collected December 12-17, 2017 (Fredericks and others, 2019) to assess changes in seafloor elevation and structure that occurred after the passage of Hurricane Irma. An elevation change analysis between the 2016 NOAA lidar data and the 2017 USGS multibeam data was performed to quantify and map impacts to seafloor elevation and determine elevation and volume change statistics for ten habitat types found at Looe Key. Data were collected under Florida Keys National Marine Sanctuary permit FKNMS-2016-068. Purpose: These data were used to determine seafloor elevation and volume changes, from 2016 to 2017, at Looe Key, FL. Supplemental_Information: The lidar data were collected by the NOAA National Geodetic Survey (NGS) Remote Sensing Division using a Riegl VQ-820-G system. The lidar data are an ancillary product of NOAA's Coastal Mapping Program (CMP), created through a wider Integrated Ocean and Coastal Mapping initiative to increase support for multiple uses of the data. The multibeam data were collected using two Teledyne SeaBat T50-P multibeam echosounders, in a dual head configuration. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20160721 Ending_Date: 20171217 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -81.443218 East_Bounding_Coordinate: -81.364841 North_Bounding_Coordinate: 24.574915 South_Bounding_Coordinate: 24.536006 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:a5d923cb-bccc-4e53-93c7-886d9feb0758 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: multibeam sonar 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 Theme_Keyword: MBES > MULTIBEAM MAPPING SYSTEM Place: Place_Keyword_Thesaurus: Geographic Names Information System Place_Keyword: Looe Key Place_Keyword: Florida Keys Place_Keyword: Florida 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: 2016-2017 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: United States Contact_Voice_Telephone: 727-502-8059 Contact_Electronic_Mail_Address: kyates@usgs.gov Cross_Reference: Citation_Information: Originator: International Hydrographic Organization Publication_Date: 2008 Title: IHO Standards for Hydrographic Surveys Publication_Information: Publication_Place: 4, quai Antoine 1er B.P. 445 - MC 98011 MONACO Cedex Principauté de Monaco Publisher: International Hydrographic Bureau Other_Citation_Details: pages 15-16 Online_Linkage: https://www.iho.int/iho_pubs/standard/S-44_5E.pdf Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Datasets were visually compared by USGS staff in Esri ArcGIS Desktop Advanced version 10.6 for identification of anomalous elevations or data inconsistencies. Logical_Consistency_Report: Data cover the area specified for this project, without any known issues. Completeness_Report: This dataset is considered complete for the information presented, as described in the abstract section. 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: For the 2016 lidar, the 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. Multibeam data were collected and processed to meet or exceed International Hydrographic Organization (IHO) Special Order Standards for positioning and depth (IHO, 2008). Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: For the 2016 lidar, the data positions were obtained using post-processed KGPS methods. Data used to test 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. Multibeam data were collected and processed to meet or exceed IHO Special Order Standards for positioning and depth (IHO, 2008). 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: 20170914 Title: 2016 NOAA NGS Topobathy Lidar DEM: 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/48373 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: 2016 Looe Key lidar Source_Contribution: The original lidar data used to calculate elevation and volume change statistics for Looe Key from 2016 to 2017. Source_Information: Source_Citation: Citation_Information: Originator: Jake J. Fredericks, Billy J. Reynolds, Andrew S. Farmer, Kimberly K. Yates, and David G. Zawada Publication_Date: 2019 Title: Bathymetry Data Collected in December 2017, February 2018 and March 2018 at Looe Key, the Florida Keys Geospatial_Data_Presentation_Form: Tabular digital data Series_Information: Series_Name: U.S. Geological Survey Data Release Issue_Identification: doi:10.5066/P9P2V7L0 Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P9P2V7L0 Type_of_Source_Media: bathymetry data Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20171212 Ending_Date: 20171217 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: 2017 Looe Key multibeam Source_Contribution: The original multibeam data used to calculate elevation and volume change statistics for Looe Key from 2016 to 2017. Source_Information: Source_Citation: Citation_Information: Originator: Florida Fish and Wildlife Conservation Commission, Fish and Wildlife Research Institute Publication_Date: 20170113 Title: Unified Florida Reef Tract Map Version 2.0 Geospatial_Data_Presentation_Form: Shapefile 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: Habitat file Source_Contribution: This shapefile was used to divide the DEM by habitat types using Unified Classification (UC) Class Level 2. Process_Step: Process_Description: Step 1: The original 2016 NOAA NGS Topography Lidar DEM: Florida Keys Outer Reef Block 01 tagged image file format (TIFF) DEM was downloaded from https://inport.nmfs.noaa.gov/inport/item/48373 using the "Customized Download" capability of NOAA’s DigitalCoast website. The data were downloaded with the following parameters: 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. Using VDatum version 3.9, a publicly available software from NOAA (https://vdatum.noaa.gov/), the lidar TIFF was transformed from the North American Datum of 1983 (NAD83) to NAD83 (2007) horizontal datum, the vertical datum and geoid model were kept the same. Process_Date: 2019 Process_Step: Process_Description: Step 2: The original 2017 Looe Key XYZ multibeam data were downloaded from https://coastal.er.usgs.gov/data-release/doi-P9P2V7L0. Using VDatum v.3.9, the data were transformed from their native WGS84 horizontal datum and ellipsoid heights to the NAD83 (2007) horizontal datum and North American Vertical Datum 1988 (NAVD88) vertical datum, applying the GEOID12B model. The transformed XYZ points were loaded into Blue Marble Global Mapper version 18.2 and gridded using the "Create Elevation Grid from 2D Vector/Lidar Data" tool in the Analysis menu. Grid spacing was manually set to 1 m for the X- and Y-axes and the 'Elevation Grid No Data Distance Criteria' was set to 3.0. The resultant 2017_LooeKey_Multibeam_Clip DEM was exported as a TIFF with the following parameters: 32-bit floating point samples, Sample Spacing of 1 m for both X- and Y-axes, Always Generate Square Pixels, LZW Compression, Generate TFW (World) File, and Generate PRJ File. Process_Date: 2019 Process_Step: Process_Description: Step 3: Using Esri ArcGIS Desktop Advanced version 10.6, footprints of the original 2016 lidar and 2017 multibeam TIFF's were created with the "Reclassify (Spatial Analyst)" tool in ArcToolbox. To create each raster file, all old data values were replaced with 1 and the 'No Data' value with 0 to create the raster files. Then, the "Raster to Polygon (Conversion)" tool was used to create a footprint of the original lidar and original multibeam data by converting the raster files to polygon shape (SHP) files. Process_Date: 2019 Process_Step: Process_Description: Step 4: Due to edge effects, additional areas were removed from the 2016 lidar. Polygons encompassing the regions of error were created using Global Mapper 18.2 with the "Digitizer" tool and the 'Create Area/Polygon Features'. The polygons were exported as a single SHP file, see Lidar_EdgeEffects_Removed_Areas SHP file. Process_Date: 2019 Process_Step: Process_Description: Step 5: A polygon SHP file of the geometric intersection between the lidar and multibeam was created with the "Intersect (Analysis)" tool by adding the lidar and multibeam footprint SHP files (Step 4) as 'Input features'. Additional areas were deleted from the Intersect_footprint SHP file because of lidar edge effects using the "Erase (Analysis)" tool by specifying the Intersect_footprint SHP file as the 'Input features' and the Lidar_EdgeEffects_Removed_Areas SHP file as the 'Erase Features'. Then, the lidar and multibeam TIFF's (Step 1, 2) were clipped to the extent of the Intersect_footprint SHP file using the "Clip (Data Management)" tool by specifying the lidar or multibeam TIFF as the 'Input Features' and the Intersect_footprint SHP file as the 'Clip Features,' creating the 2016_LooeKey_Lidar_Clip TIFF and the 2017_LooeKey_Multibeam_Clip TIFF. Process_Date: 2019 Process_Step: Process_Description: Step 6: A 2-m grid was created using the "Create Fishnet (Data Management)" tool with the following parameters: Template extent: Intersect_footprint SHP file (Step 5); Cell size width: 2; Cell size height: 2; Number of Rows: left blank, Number of Columns: left blank; Geometry type: POLYLINE and box checked for 'Create Label Points'. The 2-m grid label points SHP file was clipped to the extent of the Intersect_footprint SHP file using the "Clip (Analysis)" tool by specifying the 2-m grid label points SHP file as the 'Input features' and the Intersect_footprint SHP file as the 'Clip features.' XY coordinates were added to the 2-m grid SHP file using the "Add XY Coordinates (Data Management)" tool, to create the 2m_grid point SHP file. Process_Date: 2019 Process_Step: Process_Description: Step 7: Values from the 2016_LooeKey_Lidar_Clip TIFF (Step 5) and 2017_LooeKey_Multibeam_Clip TIFF (Step 5) were extracted at the location of the 2m_grid points using the "Extract Values to Points (Spatial Analyst)" tool by specifying the 2m_grid point SHP file as the 'Input point features' and the 2016_Lidar_Clip TIFF as the 'Input', creating the Lidar_Extract_Points SHP file. This step was repeated with the Lidar_Extract_Points SHP file as the 'Input point features' and the 2017_LooeKey_Multibeam_Clip TIFF as the 'Input', creating the LooeKey_IntersectPoints SHP file. Process_Date: 2019 Process_Step: Process_Description: Step 8: The elevation difference (Diff_m) between the multibeam (RASTERVALU) and the lidar data (RASTERVA_1) were calculated by adding a field to the attribute table of the LooeKey_IntersectPoints SHP file using the "Field Calculator" and the expression Diff_m = [RASTERVALU] – [RASTERVA_1]. Process_Date: 2019 Process_Step: Process_Description: Step 9: The original Unified Florida Reef Tract Map version 2.0 SHP file was downloaded from http://ocean.floridamarine.org/IntegratedReefMap/UnifiedReefTract.htm. Using Esri ArcGIS, the original habitat SHP file was modified using the "Clip (Analysis)" tool to clip the habitat SHP file to the extent of the Intersect_footprint SHP file (Step 4) by specifying the habitat SHP file as the 'Input Features' and the Intersect_footprint SHP file as the 'Clip Features', creating the LooeKey_Habitat_Clip. Using the "Select by Attribute" tool, individual habitat SHP files were created from the LooeKey_Habitat_Clip SHP file using the "Select by Attribute" tool to select one ClassLv2 habitat and exporting as a separate SHP file. Process_Date: 2019 Process_Step: Process_Description: Step 10: Elevation change statistics were determined by habitat type using the XYZ points from the LooeKey_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: LooeKey_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, because these steps had to be repeated for 10 habitat types. Elevation change statistics from Looe Key were compiled by habitat type into a comma separated values (CSV) file using Microsoft Excel 2016, see LooeKey_Elevation_Statistics.csv. Process_Date: 2019 Process_Step: Process_Description: Step 11: An elevation change surface model was created using the "Create TIN (3D Analyst)" tool by specifying the LooeKey_IntersectPoints SHP file (Step 7) 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 2.828428 (hypotenuse of a 2-m grid) and the 'Method' set to ALL. The delineated Intersect_TIN was clipped to the extent of the Intersect_footprint SHP file (Step 5) using the "Edit TIN (3D Analyst)" tool with the following parameters: Input TIN: Intersect_TIN; Input Features Class: Intersect_footprint SHP file; Height Field: None, Tag Field: None; and Type: Hard clip. Process_Date: 2019 Process_Step: Process_Description: Step 12: In addition to elevation-change statistics, volume-change statistics per habitat type were calculated using the final TIN (Step 10). 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 -0.212 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 0.212 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 0.212 m threshold was determined by vertical error analysis using the uncertainties reported in the metadata of the original lidar (0.15 m) and multibeam (0.15 m) products to calculate the Root Mean Square Error (RMSE) of 0.212 m. 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, because these steps had to be repeated for 10 habitat types. Volume change statistics from Looe Key were compiled by habitat type in CSV format using Microsoft Excel 2016, see LooeKey_Volume_Statistics.csv. Process_Date: 2019 Process_Step: Process_Description: The elevation and volume statistics files and elevation change points SHP file were revised in July 2020 and version 2.0 of the data release was created. Using ArcMap version 10.6, points with 'No Data' were removed from the LooeKey_IntersectPoints SHP file using the "Select by Attribute" tool to select points from the attribute table where the RASTERVALU (multibeam) or the RASTERVA_1 (lidar) equaled -9999. The "Editor Toolbox" was used to delete a total of 2,548 points prior to the final file being saved as, LooeKey_IntersectPoints_v2 SHP file. The elevation and volume statistics were recalculated using the updated LooeKey_IntersectPoints_v2 SHP file, creating the LooeKey_Elevation_Statistics_v2.csv and LooeKey_Volume_Statistics_v2.csv files. 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: 4934364 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 National Spatial Reference System (2007) 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: LooeKey_Elevation_Statistics_v2.csv Entity_Type_Definition: Looe Key elevation change statistics per habitat type from 2016 to 2017. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: Habitat types in Looe Key study site Attribute_Definition: The habitat types found in the Looe Key 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 Looe Key study site, includes 10 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 and 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: 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: 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 Looe Key habitat type. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4789 Range_Domain_Maximum: 4934364 Attribute_Units_of_Measure: number of points Attribute: Attribute_Label: Mean elevation change (m) Attribute_Definition: Mean elevation change per habitat type in the Looe Key study site from 2016 to 2017, in meters. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.195919753 Range_Domain_Maximum: 0.525183988 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: 0.103321815 Range_Domain_Maximum: 0.363928577 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 Looe Key habitat type. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4679 Range_Domain_Maximum: 4733820 Attribute_Units_of_Measure: number of points Attribute: Attribute_Label: Max accretion (m) Attribute_Definition: Maximum accretion per habitat type in the Looe Key study site from 2016 to 2017, in meters. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.878978729 Range_Domain_Maximum: 3.499018192 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Mean accretion (m) Attribute_Definition: Mean accretion per habitat type in the Looe Key study site from 2016 to 2017, in meters. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.307622146 Range_Domain_Maximum: 0.540817954 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: 0.102267821 Range_Domain_Maximum: 0.232639254 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 Looe Key habitat type. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 12 Range_Domain_Maximum: 200544 Attribute_Units_of_Measure: number of points Attribute: Attribute_Label: Max erosion (m) Attribute_Definition: Maximum erosion per habitat type in the Looe Key study site from 2016 to 2017, in meters. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -3.64576149 Range_Domain_Maximum: -0.07098484 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: Mean erosion (m) Attribute_Definition: Mean erosion per habitat type in the Looe Key study site from 2016 to 2017, in meters. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.429978749 Range_Domain_Maximum: -0.019586802 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: 0.021273249 Range_Domain_Maximum: 0.457840507 Attribute_Units_of_Measure: meters Detailed_Description: Entity_Type: Entity_Type_Label: LooeKey_Volume_Statistics_v2.csv Entity_Type_Definition: Volume statistics by habitat type in Looe Key from 2016 to 2017. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: Habitat types in Looe Key study site Attribute_Definition: The habitat types found in Looe Key. 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 Looe Key study site, includes 10 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: 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: 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 the 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: 0.018265873 Range_Domain_Maximum: 19.70736309 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, in millions of cubic meters. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0.05566243 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, in millions of cubic meters. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.000000142 Range_Domain_Maximum: 0.146305379 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, in millions of cubic meters. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.003345615 Range_Domain_Maximum: 3.10096944 Attribute_Units_of_Measure: 10^6 m^3 Attribute: Attribute_Label: Net accretion upper limit (10^6 m^3) Attribute_Definition: Net accretion maximum value per habitat, in millions of cubic meters. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.008723359 Range_Domain_Maximum: 6.896540441 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, in millions of cubic meters per study area. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.003345615 Range_Domain_Maximum: 3.045307009 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, in millions of cubic meters per study area. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.008723217 Range_Domain_Maximum: 6.750235062 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, in millions of cubic meters per kilometer squared. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.060376809 Range_Domain_Maximum: 0.322111588 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, in millions of cubic meters per kilometer squared. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.196599646 Range_Domain_Maximum: 0.52574338 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: United States 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: SHP, CSV, TIFF 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-P937LNZF/data/2016_LooeKey_Lidar_Clip.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P937LNZF/data/2017_LooeKey_Multibeam_Clip.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P937LNZF/data/LooeKey_Habitat_Clip.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P937LNZF/data/LooeKey_IntersectPoints_v2.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P937LNZF/data/Lidar_EdgeEffects_Removed_Areas.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P937LNZF/data/LooeKey_Elevation_and_Volume_Statistics_v2.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-P937LNZF/data/Supplemental_Map.zip Fees: None Metadata_Reference_Information: Metadata_Date: 20201117 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: United States Contact_Voice_Telephone: 727-502-8059 Contact_Electronic_Mail_Address: kyates@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998